HomeMy WebLinkAboutPermit M02-195 - PILO RESIDENCEM02 -195
Pilo Residence
15630 44 Av
S
Parcel No.:
Address:
Suite No:
Tenant:
Name:
Address:
Owner:
Name:
Address:
Contact Person:
Name:
Address:
Contractor:
Name:
Signature:
Print Name:
doc: Mech
City of ri'ukwila
Department of Community Development / 6300 Southcenter BL, Suite 100 / Tukwila, WA 98188 / (206) 431 -3670
8108600180
15630 44 AV S TUKW
PILO STEPHAN G AND EVA
15630 44TH AVE S, SEATTLE WA
PILO STEPHAN G
15630 44TH AVE S, SEATTLE WA
GALLAGHER, CANDICE
2800 THORNDYKE AV W, SEATTLE, WA
WASHINGTON ENERGY SERVICES CO
Address: 2800 THORNDYKE AVE W, SEATTLE
Contractor License No: WASHIES990CW
DESCRIPTION OF WORK:
REPLACE 65 BTU GAS FURNACE - LIKE FOR LIKE
Value of Construction: $3,032.30 Fees Collected: $52.00
Type of Fire Protection: N/A Uniform Mechnical Code Edition: 1997
Permit Center Authorized Signature:
I hereby certify that I have read and examined this permit and know the same to be true and correct. All provisions of law and
ordinances governing this work will be complied with, whether specified herein or not.
The granting of this permit does not presume to give authority to violate or cancel the provisions of any other state or local laws
regulating construction or t - performance of work. I am authorized to sign and obtain this mechanical permit.
-- / --- 01 (1 )0A7A CDSkarVY
This permit shall become null and void if the work is not commenced within 180 days from the date of issuance, or if the work is
suspended or abandoned for a period of 180 days from the last inspection.
if
MECHANICAL PERMIT
Date: �;< -O -
MO2 -195 Printed: 09 -25 -2002
Permit Number:
Issue Date:
Permit Expires On:
Phone:
Phone: 206 378 -6680
Phone: 206 282 -4700
Expiration Date: 02/16/2003
API
IS
MO2 -195
09/25/2002
03/24/2003
Date: '6;25 oD—,
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.303.30
ow Add-- 15830 44TH AVE S, TUKWILA 98188 ci'y s'""2•IF
rat" Fatal ' 8108600180
"'°F"h' ° t""'r' EVA PILO • • ,
• ,
Phone: (206) 2421236
64r " i'rei " 15630 44TH AVE S, TUKWILA 98188 City
ra te ( .)
CO " I ' acten 'WESCO • • '
11"311` 206) 378 6680
steeet Malin 2800 THORNDYKE AVE W.SEATTLE
F'" ": 1 }
C "' de " " ' nee '" CANDICE•GALLAGHER
•
Pi= .. ( ' , )
st"" I "2600 THORNDYKE AVE W, SEATTLEoN data' 9'
Fax 1r 1Y08) 378 6680
09/18/2002 21:45
3609452091
CITY OF TUKWILA
permit Center :
6300 SolAhcenter 8oukevarJ, Suite 100
TukwIIk WA !a rda1 ,
' (206) 131 -3170
.`Ic( home ,il {'vrrllil Applic ((IIC5 i
. AppUofas andp(anr. be compinta in °mile vo be accepted for plan review.
ApM :aeons wig( not be accepted through the mall or Melia» *.
MRNMRGL PEWIT REVIEW AND APIROVAI REQUESTl HO SERUM OUT :iVAPruCANr1 •
Destripllm of work to be done (please be spedtky:
REPALCE 65 MBTU GAS FURNACE
. nrarss
a.dsme .64
NWPERMIT
I I , V. L I 'of •.1 l ,' 1 1
Finkel Nervier:
r o o k • fit 47
Conrail . 4sVi of WaehNrpdri State Dep:ctinent of tabor anti Inifi ei Iry Valid Coninetor's Ocelot. If not-available it time of
aprflration, a eopy We Wawa will be required bid* the permit is kited OR subetis Form Hit, `Affidavit iii Lieu of 'Contractor
Itegistmtjae. . .
Maui OtwvesfArddori:adA►adt If the applicant 'settler than the owneq regis(sred erchiteci/enpneer, or contractor licensed by the
SutrOt Washington, a notarized ieuer from rho properly owner atahaizing the agent to submit this•permit application end obtain the
permit wiU be required u part of this submittal. • • • •
I RIMY MINT THAT NAVES ADANDVAK11N1D T HIS AMU C ATION AND SNOW ibis SAME tom 7RLJE 1iW014
PENALTY Of PENURY se Me LAWS Of THE STATI OF WASHINGTON, AND I AM AUTHORIZED PO A►►LY FOR THUS PEIAIT.
•
EapirartMn of Man Lades, - Applications /or which no permit is laved within 100 days fog lowtnj the dale of application Shall expire by •
limitation. The building official may extend Ow time for aclton by the eppticinl fora period not exceeding 16D days upon written
request by dee applicant as Anil in Season 114.4 of the Uniform Mechanical Code (current edition). No application shalt be
extended mom Man QOM
I Gate spoliation occepteek
Oats application avian:
2 2 . 5 -0 ,.3
Applkation tak n bvainkhasI .1
PAGE 03
Signature:
doc: Conditions
City of'1'ukwila
Department of Community Development / 6300 Southcenter BL, Suite 100 / Tukwila, WA 98188 / (206) 431 -3670
Parcel No.: 8108600180
Address: 15630 44 AV S TUKW
Suite No:
Tenant: PILO STEPHAN G AND EVA
PERMIT CONDITIONS
1: ** *BUILDING DEPARTMENT CONDITIONS * **
2: No changes will be made to the plans unless approved by the Engineer and the Tukwila Building Division.
3: All permits, inspection records, and approved plans shall be available at the job site prior to the start of any construction. These
documents are to be
maintained and available until final inspection approval is granted.
4: All construction to be done in conformance with approved plans and requirements of the Uniform Building Code (1997 Edition) as
amended, Uniform Mechanical Code
(1997 Edition), and Washington State Energy Code (1997 Edition).
5: Validity of Permit. The issuance of a permit or approval of plans, specifications, and computations shall not be construed to be a
permit for, or an approval
of, any violation of any of the provisions of the building code or of any other ordinance of the jurisdiction. No permit presuming to
give authority to violate
or cancel the provisions of this code shall be valid.
6: Manufacturers installation instructions required on site for the building inspectors review.
7: Fuel burning appliances may not be installed in sleeping rooms, U.M.C. 304.5.
8: Appliances which generate flame, spark or glowing ignition, shall be elevated 18 inches above the floor (U.M.C. 303.1.3.).
9: Water heater shall be anchored to resist earthquake (U.P.C. 510.5).
I hereby certify that I have read these conditions and will comply with them as outlined. All provisions of law and ordinances
governing this work will be complied with, whether specified herein or not.
The granting of this permit does not presume to give authority to violate or cancel the provision of any other work or local laws
regulating construction or the performance of work.
Print Name: /c Ma./j
MO2 -195
Permit Number: MO2 -195
Status: ISSUED
Applied Date: 09/25/2002
Issue Date: 09/25/2002
Date:
Printed: 09 -25 -2002
Parcel No.: 8108600180
Address: 15630 44 AV S TUKW
Suite No:
Applicant: PILO STEPHAN G AND EVA
Receipt No.: R020001409 Payment Amount: 52.00
Initials: SKS Payment Date: 09/25/2002 12:38 PM
User ID: 1165 Balance: $0.00
Payee: BLUE DOT SERVICE
TRANSACTION LIST:
ACCOUNT ITEM LIST:
doc: Receipt
City of Tukwila
6300 Southcenter BL, Suite 100 / Tukwila, WA 98188 / (206) 431 -3670
Current Pmts
Amount
Payment Check 2668
MECHANICAL - RES
RECEIPT
Type Method Description
Permit Number: MO2 -195
Status: PENDING
Applied Date: 09/25/2002
Issue Date:
52.00
Description Account Code
000/322.100 52.00
Total: 52.00
Printed: 09 -25 -2002
rtili' s+:!C
INSPECTION NO;
ITY-OF TUKWILA BUILDING DIVISION
6300. ;Southcenter.Blvd., #100, Tukwila, WA 98188
Project:
nAit/ AZ ‘S,
Addr ess;
7v
Special •
Type of Inspection:
L
Dat Caked:
/0 - J,7 -
Wante
Req ester:
(P2f/!/ ig
Pho( No. ) % � -a S47
Approved per applicable codes.
014_ '-k F
INSPECTION RECCT
Retain a copy with permit
Inspector 0 Date:
$47.00REINSPECTION.FEE REQUIRED. Prior to inspection, fee must be
paid at b300 Southcenter Blvd., Suite 100. Call to schedule reinspection.
J Receip . t:No.:
!Date:
(206)431 -3670
El Corrections required prior to approval.
I
bryant
installation, start -up,
and operating instructions
DOWNFLOW /HORIZONTAL
2- SPEED, 2- STAGE, INDUCED -
COMBUSTION GAS -FIRED FURNACE
331 AAV
Series C
or D
NOTE: Read the entire instruction manual before starting the
installation.
This symbol —> indicates a change since the last issue.
Index
Page
SAFETY CONSIDERATIONS I
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
PROCEDURE 2
INTRODUCTION 2 -4
Dimensional Drawing 2
Clearances to Combustibles 3
LOCATION 4
General 4
Location Relative to Cooling Equipment 4
Hazardous Locations 5
AIR FOR COMBUSTION AND VENTILATION 5 -6
Unconfined Space 5
Confined Space 5 -6
AIR DUCTS 6 -7
General Requirements 6
Ductwork Acoustical Treatment 6
Supply Air Connections 6
Return Air Connections 6 -7
SUPPLY -AIR PLENUM INSTALLATION
(DOWNFLOW) 7
HORIZONTAL ATTIC INSTALLATIONN 7
HORIZONTAL CRAWLSPACE INSTALLATION 7
FILTER ARRANGEMENT 7
GAS PIPING 7 -8
ELECTRICAL CONNECTIONS 9 -11
115 -v Wiring 9
24 -v Wiring I I
Accessories I I
VENTING I 1
START -UP, ADJUSTMENT, AND SAFETY CHECK 12 -24
General 12 -13
Sequence of Operation 13 -17
Adaptive Heating Mode 14
Non - Adaptive Heating Mode 14 -16
Cooling Mode 16
Continuous Blower Mode 16
Heat Pump Mode 16
Defrost Mode 17
Start-Up Procedures 17
Adjustments 17 -23
Set Gas Input Rate 17 -22
Set Temperature Rise 22 -23
Set Thermostat Heat Anticipator 23
Check Safety Controls 23
Checklist 2
SAFETY CONSIDERATIONS
Installing and servicing heating equipment can be hazardous due to
gas and electrical components. Only trained and qualified person-
nel should install, repair, or service heating equipment.
— I —
C a n c e l s : I 1 331 A -63 -6
CERTIFIED
ama
001 *Fa
REGISTERED QUALITY SYSTEM
II 331A-63-7
10 -00
Untrained personnel can perform basic maintenance functions
such as cleaning and replacing air filters. All other operations must
be performed by trained service personnel. When working on
heating equipment, observe precautions in the literature, on tags,
and on labels attached to or shipped with the unit and other safety
precautions that may apply.
Follow all safety codes. In the United States, follow all safety
codes including the National Fuel Gas Code (NFGC) NFPA
54 -1999 /ANSI Z223.1 -1999 and the Installation Standards. In
Canada, refer to the current edition of the CAN /CGA -B 149.1- and
.2 -M95 National Standard of Canada, Natural Gas and Propane
Installation Codes (NSCNGPIC). Wear safety glasses and work
gloves. Have a fire extinguisher available during start-up and
adjustment procedures and service calls.
Recognize safety information. This is the safety -alert symbol ® .
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, and CAU-
TION. These words are used with the safety -alert symbol. DAN-
GER identifies the most serious hazards which will result in severe
personal injury or death. WARNING signifies hazards which
could result in personal injury or death. CAUTION is used to
identify unsafe practices which would result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
These instructions cover minimum requirements and conform to
existing national standards and safety codes. In some instances,
these instructions exceed certain local codes and ordinances,
especially those that may not have kept up with changing residen-
tial construction practices. We require these instructions as a
minimum for a safe installation.
MO IqG
UNIT SIZE
A
D
E
VENT CONN
SHIP. WT
024065
14 -3/16
12 -9/16
12 -11/16
4
141
036065
14 -3/16
12 -9/16
12 -11/16
4
145
036085
17-1/2
15 -7/8
16
4
154
048085
17 -1/2
15 -7/8
16
4
154
048105
17 -1/2
15 -7/8
16
4
171
060105
21
19 -3/8
19 -1/2
4
181
060125
24 -1/2
22 -7/8
23
5
192
39
7 /f;" DIA
ACCESSORY
1 3 /4" DIA HOLE —
GAS ENTRY
13/16" I INLETT
74
20"
28 1 /2"
OUTLET
f -1g'
VENT CONNECTION
1 �'is "-►I � D�
9 1 /8"
0 1/4"
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
PROCEDURE
m
CAUTION: Electrostatic discharge can affect electronic
components. Take precautions during furnace installation
and servicing to protect the furnace electronic control.
Precautions will prevent electrostatic discharges from
personnel and hand tools which are held during the
procedure. These precautions will help to avoid exposing
the control to electrostatic discharge by putting the
furnace, the control, and the person at the same electro-
static potential.
I. Disconnect all power to the furnace. DO NOT TOUCH
THE CONTROL OR ANY WIRE CONNECTED TO THE
CONTROL PRIOR TO DISCHARGING YOUR BODY'S
ELECTROSTATIC CHARGE TO GROUND.
0 0 0
=300
C1 0 =
0 0 0
0 0 0
0 0 0
0 0 0
O O 0
0 0 0
4 3 /1s"
16 1 /16"
2 15 /16"
I= 1 1 /"" � �– E — ►1 13 5/6„
8
2 1�" 10 1/4"
X8 1 / 4 " A - 11 /16"
11 /16"
4,
Fig. 1— Dimensional Drawing
TABLE 1— DIMENSIONS (IN.)
—2—
o- R - DIA
ACCESSORY
�-1 1 /16"
7 92" DIA
THERMOSTAT
WIRE ENTRY
1 43"
7 /8" DIA HOLE
POWER ENTRY
1 1 /2" DIA
R.H. GAS ENTRY
7 /6" DIA
ACCESSORY
NOTE: ADDITIONAL 7 /8" DIA K.O. ARE AIRFLOW DIMPLES TO DRILL HOLES
LOCATED IN THE TOP PLATE FOR HANGER BOLTS (4 PLACES)
AND BOTTOM PLATE IN HORIZONTAL POSITION
NOTES: 1. Two additional Win. dia holes are located in the top plate.
2. Minimum return -air openings at furnace, based on metal duct. If flex duct is used,
see flex duct manufacturer's recommendations for equivalent diameters.
a. For 800 CFM- 16 -in. round or 141/2 x 12 -In. rectangle.
b. For 1200 CFM- 20 -in. round or 141 x 191 -in. rectangle.
c. For 1600 CFM- 22 -in. round or 141/2 x 23 -ln. rectangle.
d. For airflow requirements above 1800 CFM, must use entire return air opening.
A99109
2. Firmly touch a clean, unpainted, metal surface of the
furnace chassis which is close to the control. Tools held in
a person's hand during grounding will be satisfactorily
discharged.
3. After touching the chassis you may proceed to service the
control or connecting wires as long as you do nothing that
recharges your body with static electricity (for example; DO
NOT move or shuffle your feet, DO NOT touch un-
grounded objects, etc.).
4. If you touch ungrounded objects (recharge your body with
static electricity), firmly touch furnace again before touch-
ing control or wires.
5. Use this procedure for installed and uninstalled (un-
grounded) furnaces.
6. Before removing a new control from its container, dis-
charge your body's electrostatic charge to ground to protect
the control from damage. If the control is to be installed in
MO iqs
-4 Fig. 2— Clearances to
a furnace, follow items I through 5 before bringing the
control or yourself into contact with the furnace. Put all
used AND new controls into containers before touching
ungrounded objects.
7. An ESD service kit (available from commercial sources)
may also be used to prevent ESD damage.
INTRODUCTION
The model 331AAV Series C or D Furnace is available in sizes
65,000 through 123,000 Btuh input capacities.
The design of the downflow/horizontal gas -fired furnace is CSA
(A.G.A. and C.G.A.) certified for natural and propane gases and
for installation on noncombustible flooring. The furnace is factory -
shipped for use with natural gas. The manufacturer's accessory gas
conversion kit is required to convert furnace for use with propane
gas.
These furnaces SHALL NOT be installed directly on carpeting,
tile, or any other combustible material other than wood flooring. In
downflow installations, the manufacturer's accessory floor base
must be used when installed on combustible materials and wood
flooring. Special base is not required when this furnace is installed
on manufacturer's Coil Assembly Part No. CD5 or CK5, or when
Coil Box Part No. KCAKC is used. This furnace is for installation
in alcoves, attics, crawispaces, basements, closets, or utility rooms.
The design of this furnace line is not CSA (A.G.A. and C.G.A.)
certified for installation in mobile homes, recreation vehicles, or
outdoors.
Before installing the furnace in the United States, refer to the
current edition of the NFGC and NFPA 90B. For copies of the
NFGC and NFPA 90B, contact the National Fire Protection
Agency Inc., Batterymarch Park, Quincy, MA 02269; or the
American Gas Association, 1515 Wilson Blvd., Arlington, VA.
22209.
Before installing the furnace in Canada, refer to the current edition
of the NSCNGPIC. For a copy of the NSCNGPIC, contact
Standard Sales, CSA International, 178 Rexdale Blvd., Etobicoke
(Toronto), Ontario, Canada M9W I R3.
—3—
MINIMUM INCHES CLEARANCE TO COM
This forced air furnace is equipped for use with natural gas at
altitudes 0-10,000 ft (03,050m).
An accessory kit, supplied by the manufacturer,shall be used to
convert to propane gas use or may be required for some natural gas
applications.
This furnace is for indoor installation in a building constructed on site.
This furnace may be installed on combustible flooring In alcove or
closet at minimum clearance front combustible material.
This furnace may be used with a Type B-1 Vent and may be vented in
cornrnon with other gas -fired appliances.
For installation on non - combustible floors only.
t For installation on combustible flooring only when installed on
special base, Part No. KGASB0201ALL, Coil Assembly, Part No.
CD5 or CK5, or Coil Casing, Part No. KCAKC.
# For furnaces wider than 14.25 inches (362nvn) may be 0 inches.
0 18 inches front clearance required for alcove.
* Indicates supply or return sides when furnace is in the horizontal
position. Line contact only permissible between lines formed by
intersections of the Top and two Sides of the furnace Jacket, and
building joists, studs or framing.
## For single wall vent type 6 inches.
For Type B-1 vent type 3 inches.
t t Clearance to Back 0 inches (0 po) in downflow and horizontal
(attic/alcove & crawispace) positions and 3 inches (3 po) in
horizontal closet positions.
BUSTIBLE CONSTRUCTION
This furnace is approved for DOWNFLCW and HORIZONTAL
installatlans.
Clearance arrows
do not change with
furnace orientation.
aearance In Inches
Vent Clearance to combustibles:
For Single Wall vents 6 inches (6 po).
For Type B - 1 vent type 1 Inch (1 po).
322286 -101 REV. F
A00300
Combustibles
Installation must comply with regulations of serving gas supplier
and local building, heating, plumbing or other codes in effect in the
area in which installation is made. In the absence of local building
codes, installation must comply with the NFGC in the United
States and the NSCNGPIC in Canada.
These instructions cover minimum requirements for a safe instal-
lation and conform to existing national standards and safety codes.
In some instances, these instructions exceed certain local codes
and ordinances, especially those that may not have kept pace with
changing residential construction practices. We require these
instructions as a minimum for a safe installation.
The duct system should be designed and sized according to
accepted national standards published by: Air Conditioning Con-
tractors Association (ACCA), Sheet Metal and Air Conditioning
Contractors National Association (SMACNA). Or consult the
Residential Systems Design Guidelines reference tables available
from your local distributor. The duct system should be sized to
handle the maximum CFM capabilities of the equipment at the
optimum design static pressure.
CAUTION: Application of this furnace should be in-
doors with special attention given to vent sizing and
material, gas input rate, air temperature rise, and unit
sizing. Improper installation or misapplication of the
furnace can require excessive servicing or cause prema-
ture component failure.
installation must conform to regulations of serving gas supplier
and local building, heating, and plumbing codes in effect in the
area in which installation is made, or in absence of local codes with
requirements of the NFGC.
To aid in installation, troubleshooting, and service, a status code
label is located on blower component door. This label explains
how to use the LED status indicated on furnace control which is
viewed through the sight glass on door.
MO2 c5'
I -
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CO tit
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RETURN AIR
'F 'F
• I
MAX 85`F MIN 55'F
A99093
NOTE: These furnaces are designed for a minimum continu-
ous return-air temperature of 60 °F or intermittent operation
down to 55 °F such as when used with a night setback
thermostat. Return-air temperature must not exceed a maxi-
mum of 85 °F. Failure to follow these return -air temperature
limits may affect reliability of heat exchangers, motors, and
controls.
WARNING: Improper installation, adjustment, alter-
ation, service, maintenance, or use can cause carbon
monoxide poisoning, explosion, fire, electrical shock, or
other conditions which may cause personal injury, loss of
life, or property damage. Consult a qualified installer,
service agency, local gas supplier, or your distributor or
branch for information or assistance. The qualified in-
staller or agency must use only factory- authorized and
listed kits or accessories when modifying this product. A
failure to follow this warning could result in electrical
shock, fire, personal injury, or death.
For high - altitude installation, the high- altitude conversion kit must
be installed at or above 5500 ft above sea level.
For accessory installation details, refer to applicable installation
literature.
NOTE: Remove all shipping brackets and materials before oper-
ating furnace.
—4—
I. LOCATION
A. General
CAUTION: DO NOT install furnace in a corrosive or
contaminated atmosphere. Make sure all combustion and
circulating air requirements are followed.
DO NOT use this furnace during construction when
adhesives, sealers, and /or new carpets are being installed
and curing. If the furnace is required during construction,
use clean outside air for combustion and ventilation.
Compounds of chlorine and fluorine when burned in
combustion air form acids which will cause corrosion of
the heat exchangers and metal vent systems. Some of
these compounds are released from paneling and dry wall
adhesives, paints, thinners, masonry cleaning materials,
and many other solvents commonly used in the construc-
tion process.
Excessive exposure to contaminated combustion air will
result in safety and performance related problems.
This furnace must be installed so electrical components are
protected from water.
Locate furnace as near to center of air distribution system and
chimney or vent as possible. The furnace should be installed as
level as possible.
When furnace is installed so that supply ducts carry air to areas
outside space containing furnace, the return air must also be
handled by a duct(s) sealed to furnace casing and terminating
outside space containing furnace.
Provide ample space for servicing and cleaning. Always comply
with minimum lire protection clearances shown on unit clearance
label. This furnace shall not be installed directly on carpeting, tile,
or any combustible material other than wood flooring. The furnace
may be installed on combustible flooring when installed with
accessory downflow subbase, which is available from your dis-
tributor or branch when required.
B. Location Relative to Cooling Equipment
The cooling coil must be installed parallel with or on downstream
side of furnace to avoid condensation in heat exchangers. When
installed parallel with furnace, dampers or other means used to
control the flow of air must prevent chilled air from entering
furnace. If dampers are manually operated, they must be equipped
with means to prevent operation of either unit unless damper is in
full -heat or full - cooling position.
MD
331AAV FURNACE
HIGH -FIRE INPUT
BTUH
MINIMUM SQ FT
WITH
7 -1/2 FT CEILING
63,000
420
84,000
560
105,000
700
123,000
820
C. Hazardous Locations
18 -IN. MINIMUM
TO BURNERS
A93044
WARNING: When furnace is installed in a residential
garage, it must be installed so that burners and ignition
sources are located a minimum of 18 in. above floor. The
furnace must be located or protected to avoid physical
damage by vehicles. When furnace is installed in a public
garage, airplane hangar, or other building having a
hazardous atmosphere, unit must be installed in accor-
dance with requirements of National Fire Protection
Association, Inc.
II. AIR FOR COMBUSTION AND VENTILATION
Provisions for adequate combustion and ventilation air must be
provided in accordance with Section 5.3, Air for Combustion and
Ventilation, of the NFGC or applicable provisions of local building
codes.
Canadian installations must be in accordance with NSCNGPIC
and all authorities having jurisdiction.
CAUTION: Air for combustion must not be contami-
nated by halogen compounds which include fluoride,
chloride, bromide, and iodide. These elements are found
in aerosol sprays, detergents, bleaches, cleaning solvents,
salts, air fresheners, and other household products.
CAUTION: The operation of exhaust fans, kitchen ven-
tilation fans, clothes dryers, or fireplaces could create a
negative air pressure condition at the furnace. Make -up
air must be provided for these devices, in addition to that
required by the furnace.
All fuel- burning equipment must be supplied with air for combus-
tion of the fuel. Sufficient air MUST be provided to ensure there
will not be a negative pressure in equipment room or space. In
addition, a positive seal MUST be made between furnace cabinet
and return -air duct to avoid pulling air from the burner area and
draft safeguard opening into circulating air.
The requirements for combustion and ventilation air depend upon
whether furnace is located in a CONFINED or UNCONFINED
space.
A. Unconfined Space
An unconfined space must have at least 50 cu ft for each 1000
Btuh of input for all appliances (such as furnaces, clothes dryer,
water heaters, etc.) in the space.
—5—
For Example:
If the unconfined space is constructed unusually tight, air fo
combustion and ventilation MUST come from either the outdoors
or spaces freely communicating with outdoors. Combustion and
ventilation openings must be sized the same as for a confined
space as defined below. Return air must not be taken from the
room unless equal or greater amount of air is supplied to the room.
B. Confined Space
A confined space is defined as a space whose volume is less than
50 cu ft per 1000 Btuh of total input ratings of all appliances
installed in that space. A confined space MUST have provisions
for supplying air for combustion, ventilation, and dilution of flue
gases using I of the following methods.
NOTE: In determining free area of an opening, the blocking
effect of louvers, grilles, and screens must be considered. If free
area of louver or grille design is unknown, assume that wood
louvers have a 20 percent free area and metal louvers or grilles
have a 60 percent free area. Screens, when used, must not be
smaller than I /4 -in. mesh. Louvers and grilles must be constructed
so they cannot be closed.
The size of the openings depends upon whether air comes from
outside of the structure or an unconfined space inside the structure.
I. All air an unconfined space from inside the structure
requires 2 openings (for structures not usually tight):
a. Each opening MUST have at least I sq in. of free area
per 1000 Btuh of total input for all equipment within the
confined space, but not less than 100 sq in. per opening.
(See Fig. 3 and Table 2.) The minimum dimension of air
openings shall not be less than 3 in.
b. If the building is constructed unusually tight, a perma-
nent opening directly communicating with the outdoors
shall be provided. (See item 2 below.)
c. If furnace is installed to obtain return air directly from
hallway or space adjacent to furnace, all air for combus-
tion must come from outdoors.
2. Air from outside the structure requires I of the following
methods:
a. If combustion air is taken from outdoors through 2
vertical ducts, the openings and ducts MUST have at
least I sq in. of free area per 4000 Btuh of total input for
all equipment within the confined space. (See Fig. 4 and
Table 2.)
b. If combustion air is taken from outdoors through 2
horizontal ducts, the openings and ducts MUST have at
least I sq in. of free area per 2000 Btuh of total input for
all equipment within the confined space. (See Fig. 4 and
Table 2.)
c. If combustion air is taken from outdoors through a single
opening or duct (horizontal or vertical) commencing
within 12 in. of the top of the confined space, opening
and duct MUST have at least l sq in. of free area per
3000 Btuh of the total input for all equipment within the
confined space and not less than the sum of the areas of
all vent connectors in the confined space. (See Fig. 4 and
Table 2.) Equipment clearances to the structure shall be
at least 1 in. from the sides and back and 6 in. from the
front of the appliances.
Z
l Z
rt
~ W
00
CO 0
Ul
• LL
WO
• 7
d
�
Z 1 = ..
F- O
Z I—
W
W
U D
O N
0 1—
W w
I 0
.Z
U
0 ~
Z
INTERIOR
HEATED
SPACE
1m"
1
SUPPLY AIR
I RETURN'1
AIR
1
VENT THROUGH ROOF
I (CATEGORY I)
i
iI
i12"MAX
t
1 SQ IN.
PER 1000
BTUH• IN DOOR
OR WALL
UNCONFINED
SPACE
6" MIN
(FRONT) ?
1 SQ IN.
PER 1000
BTUH. IN DOOR
OR WALL
)
• Minimum opening size is 100 sq in. with
minimum dimensions of 3 in.
t Minimum of 3 in. when type B -1 vent is used.
1 12" MAX
A93387
Fig. 3--Confined Space: Air for Combustion and Ventilation
from an Unconfined Space
When ducts are used, they must be of the same cross - sectional area
as the free area of the openings to which they connect. The
minimum dimension of ducts must not be less than 3 in. (See Fig.
4.)
III. AIR DUCTS
A. General Requirements
The duct system should be designed and sized according to
accepted national standards such as those published by: Air
Conditioning Contractors Association (ACCA), Sheet Metal and
Air Conditioning Contractors National Association (SMACNA) or
American Society of Heating, Refrigerating and Air Conditioning
Engineers (ASHRAE). or consult factory The Air Systems Design
Guidelines reference tables available from your local distributor.
The duct system should be sized to handle the required system
design CFM at the design static pressure.
When a furnace is installed so that the supply ducts carry air to
areas outside the space containing the furnace, the return air must
also be handled by a duct(s) sealed to the furnace casing and
terminating outside the space containing the furnace.
Secure ductwork with proper fasteners for type of ductwork used.
Seal supply- and return-duct connections to furnace with code
approved tape or duct sealer.
Flexible connections should be used between ductwork and
furnace to prevent transmission of vibration. Ductwork passing
thro7ugh unconditioned space should be insulated to enhance
system performance. When air conditioning is used, a vapor
barrier is recommended.
Maintain a I -in. clearance from combustible materials to supply air
ductwork for a distance of 36 in. horizontally from the furnace. See
NFPA 90B or local code for further requirements.
—6—
12" MAX
1 SQ IN.
PER 2000
B ■
DUCTS
TO
OUTSIDE '
1 SQ IN.
PER 2000
BTUH- J ^
12" MAX
SUPPLY AIR
DUCTS TO
OUTDOORS
1 u AI RETURN I VENT
z AIR I THROUGH
R ROOF
(CATEGORY I)
J DUCT
TO 1 SQ IN.
OUTDOORS PER 4000
BTUH
"Minimum dimensions of 3 in.
NOTE: Use any of the following
combinations of openings:
A &B C &D D &E F &G
1 SQ IN.
PER 4000
BTUH*
12"
MAX
1 SQ IN.
PER 4000
BTUH*
iOUTDOORS
1 SQ IN.
PER 4000
BTUH*
12"
MAX
t
A93388
Fig. 4— Confined Space: Air for Combustion and Ventilation
from Outdoors
B. Ductwork Acoustical Treatment
Metal duct systems that do not have a 90 degree elbow and 10 fl
of main duct to the first branch take -off may require internal
acousticla lining. As an alternative, fibrous ductwork may be used
if constructed and installed in accordance with the latest edition of
SMACNA construction standard on fibrous glass ducts. Both
acoustical lining and fibrous ductwork shall comply with NFPA
90B as tested by UL Standard 181 for Class 1 Rigid air ducts.
C. Supply Air Connections
UPFLOW FURNACES
Connect supply -air duct to 3/4 in. flange on furnace supply -air
outlet. The supply -air duct attachment must ONLY be connected
to furnace supply - /outlet -air duct flanges or air conditioning coil
casing (when used). DO NOT cut main furnace casing to attach
supply side air duct, humidifier, or other accessories. All accesso-
ries MUST be connected external to furnace main casing.
DOWNFLOW FURNACES
Connect supply -air duct to supply -air opening on furnace. The
supply -air duct attachment must ONLY be connected to furnace
supply /outlet or air conditioning coil casing (when used), when
installed on non - combustible material. When installed on combus-
tible material, supply -air duct attachment must ONLY be con-
nected to an accessory subbase or factory approved air condition-
ing coil casing. DO NOT cut mainfurmace casing to attach supply
side air duct, humidifier, or other accessories. All accessories
MUST be connected external to furnace main casing.
HORIZONTAL FURNACES
Connect supply -air duct to supply air opening on furnace. The
supply -air duct attachment must ONLY be connected to furnace
M0�•19S
331AAV
FURNACE
HIGH -FIRE
INPUT
(BTUH)
AIR FROM UNCON-
FINED SPACE
OUTDOOR AIR THROUGH
VERTICAL DUCTS
OUTDOOR AIR THROUGH
HORIZONTAL DUCTS
OUTDOOR AIR THROUGH
SINGLE DUCT
Free Area
of Opening
(Sq In.)
Free Area of
Opening and Duct
(Sq In.)
Round
Pipe
(In. Dia)
Free Area of
Opening and Duct
(Sq in.)
Round
Pipe
(In. Dia)
Free Area of
Opening and Duct
(Sq In.)
Round
Pipe
(in. Dia)
63,000
100
15.8
5
31.5
7
21.0
6
84,000
100
21.0
6
42.0
8
28.0
6
105,000
105
26.3
6
52.5
9
35.0
7
123,000
123
30.8
7
61.5
9
41.0
8
supply /outlet or air conditioning coil casing (when used). DO NOT
cut main furnace casing to attach supply side air duct, humidifier,
or other accessories. Allaccessories MUST be connected external
to furnace main casing.
D. Return Air Connections
UPFLOW FURNACES
The return-air duct must be connected to bottom, sides (left or
right), or a combination of bottom and side(s) of main furnace
casing as shown in Fig. 1. Bypass humidifier may be attached into
unused side return air portion of the furnace casing. DO NOT
connect any portion of return -air duct to back of furnace casing.
DOWNFLOW AND HORIZONTAL FURNACES
The return -air duct must be connected to return -air opening
provided as shown in Fig. I. DO NOT cut into casing sides or back
to attach any portion of return-air duct. Bypass humidifier connec-
tions should be made at ductwork or coil casing sides exterior to
furnace.
IV. SUPPLY AIR PLENUM INSTALLATION (DOWN -
FLOW)
A. Downflow Installation
NOTE: This furnace is approved for use on combustible flooring
when manufacturer's accessory floor base Part No.
KGASB0201ALL is used. Manufacturer's accessory floor base is
not required when this furnace is installed on manufacturer's Coil
Assembly Part No. CD5 or CK5, or Coil Box Part No. KCAKC is
used.
1 Determine application being installed from Table 3.
2. Construct hole in floor per dimensions specified in Table 3
and Fig. 5.
3. Construct plenum to dimensions specified in Table 3.
4. If downflow subbase (KGASB) is used, install as shown in
Fig. 6.
If coil assembly CD5, CK5, or Coil Box KCAKC is used,
install as shown in Fig. 7.
B. Installation On Combustible Floor
1. Cut and frame hole in floor per dimensions in Installation
Instructions packaged with downflow subbase.
2. When completed, downflow subbase, plenum, and furnace
(or coil casing when used) should be installed as shown in
Fig. 6.
V. HORIZONTAL ATTIC INSTALLATION
The furnace can be installed horizontally on either the left -hand
(LH) or right -hand (RH) side. A typical attic installation is shown
in Fig. 9.
A. Construct Working Platform
Construct working platform on location where all required furnace
clearances are met. (See Table 1 and Fig. 9.)
B. Install Furnace
Position furnace in desired location.
3. Connect gas supply pipe. See Fig. 9 for typical piping entry.
4. Connect supply- and return-air ducts.
TABLE 2 - FREE AREA OF COMBUSTION AIR OPENING
-7-
5. Install field- supplied filter retainers as indicated in Fig. 12
and Table 4 before connecting return-air duct to furnace.
6. Install 24- X 24 -in. sheet metal shield on platform in front
of louvered control panel as shown in Fig. 9.
VI. HORIZONTAL CRAWLSPACE INSTALLATION
The furnace can be installed horizontally with either the LH or RH
side up. In a crawlspace, furnace can either be hung from floor
joist (see Fig. 10) or installed on suitable blocks or pad. (See Fig.
I I.) The furnace can be suspended from each corner by hanger
bolts (4 each 3 /8 -in. all- thread rod) cut to desired length, 1- X
3 /8 -in. flat washer, 3 /8 -in. lockwasher, and 3 /8 -in. nut. Dimples
are provided for hole locations. (See Fig. I.)
Since horizontal crawlspace installation is very similar to attic
installation, refer to Step 4. The installation of a sheet metal shield
in front of louvered control panel is covered in Step 4. For a
crawlspace installation, this same sheet metal shield must be
installed above louvered control panel. Extend sheet metal shield
over furnace top far enough to cover gas pipe entry hole.
VII. FILTER ARRANGEMENT
WARNING: Never operate unit without a filter or with
filter access door removed. A failure to follow this
warning could result in fire, personal injury, or death.
The 2 factory- supplied filters are shipped in the blower compart-
ment. After return -air duct has been connected to furnace, install
filters in a V- formation inside return -air plenum. See Fig. 12 and
Table 4 for horizontal applications. Horizontal filter retainers must
be field supplied. See Fig. 13 for downflow applications.
VIII. GAS PIPING
Gas piping must be installed in accordance with national and local
codes. Refer to the NFGC NFPA 54 -1999 /ANSI Z223.I -1999.
Canadian installations must be installed in accordance with NSC-
NGPIC and all authorities having jurisdiction.
The gas supply line should be a separate line directly from the
meter to the furnace, if possible. Refer to Table 5 for recom-
mended gas pipe sizing. Risers should be used to connect to the
furnace and to the meter.
CAUTION: If flexible connector is required or allowed
by authority having jurisdiction, black iron pipe shall be
installed at gas valve and extend a minimum of 2 in.
outside furnace casing.
CAUTION: Use a backup wrench at furnace gas control
when connecting gas pipe to furnace to avoid damaging
gas controls or manifold.
FURNACE
CASING
WIDTH
APPLICATION
PLENUM OPENING
FLOOR OPENING
A
B
C
D
143176
Non - Combustible Flooring
12 -11/16
19
13 -3/8
19 -5/8
Combustible Flooring Using KGASB Subbase
11 -13/16
19
13 -7/16
20 -3/8
Combustible Flooring with CD5 or CK5 Coil Assembly or
KCAKC Coil Box
12 -5/16
19
13 -5/16
20
17
Non - Combustible Flooring
16
19
16 -5/8
19 -5/8
Combustible Flooring Using KGASB Subbase
15 -1/8
19
16 -3/4
20 -3/8
Combustible Flooring with CD5 or CK5 Coil Assembly or
KCAKC Coil Box
15 -1/2
19
16 -1/2
20
21
Non - Combustible Flooring
19 -1/2
19
20 -1/8
19 -5/8
Combustible Flooring Using KGASB Subbase
18 -5/8
19
20 -1/4
20 -3/8
Combustible Flooring with CD5 or CK5 Coil Assembly or
KCAKC Coil Box
19
19
20
20
24.112
Non - Combustible Flooring
23
19
23 -5/8
19 -5/8
Combustible Flooring Using KGASB Subbase
22 -1/8
19
23 -3/4
20 -3/8
Combustible Flooring with CD5 or CK5 Coil Assembly or
KCAKC Coil Box
22 -1/2
19
23 -1/2
20
WARNING: Use the proper length of pipes and ad-
equate piping support to avoid stress on the gas control
manifold. A failure to follow this warning can cause a gas
leak resulting in a fire, explosion, personal injury, or
death.
WARNING: Never purge a line into a combustion
chamber. Never use matches, candles, flame, or other
sources of ignition to check for gas leakage. Use a
soap- and -water solution to check for gas leaks. A failure
to follow this warning could result in fire, explosion,
personal injury, or death.
Piping should be pressure tested in accordance with local and
national plumbing and gas codes before furnace has been attached.
if test pressure exceeds 0.5 psig (I4 -in. wc), the gas supply pipe
must be disconnected from furnace and capped before pressure
test. If test pressure is equal to or less than 0.5 psig (14 -in. we),
Fig. 5 —Floor and Plenum Opening Dimensions
TABLE 3— OPENING DIMENSIONS (IN.)
—8—
A96283
turn off electric shutoff switch located on the gas valve before test.
It is recommended that ground joint union be loosened before
pressure testing.
Joint compounds (pipe dope) should be applied sparingly and only
to male threads of joints. This pipe dope must be resistant to action
of propane gas.
Install accessible manual shutoff valve upstream of furnace gas
controls and within 72 in. of furnace. A 1 /8 -in. NPT plugged
tapping is provided on gas value for test gage connection.
Installation of additional I /8 -in. NPT plugged tapping, accessible
for test gage connection, installed immediately upstream of gas
supply connection to furnace and downstream of manual shutoff
valve is not required. Place ground joint union between gas control
manifold and manual shutoff.
Install sediment trap in riser leading to furnace. The trap can be
installed by connecting a tee to riser leading from furnace. Connect
capped nipple into lower end of tee. The capped nipple should
extend below level of gas controls. (See Fig. 8.)
After all connections have been made, purge lines and check for
gas leakage with regulated gas supply pressure.
MDa 19S
J
P
■
FURNACE
(O WHEN U ED) G
COMBUSTIBLE
"e/ 4--
FLOORING
SHEET METAL __
PLENUM
FLOOR
OPENING
A96285
Fig. 6— Furnace, Plenum, and Subbase Installed on a Com-
bustible Floor
DOWNFLOW
SUBBASE
14\
A93043
WARNING: Do not install furnace on its back. Safety
control operation will be adversely affected. Never con-
nect return-air ducts to back of furnace. Failure to follow
this warning could result in fire, personal injury, or death.
IX. ELECTRICAL CONNECTIONS
A. 115 -v Wiring
Refer to unit rating plate or Table 6 for equipment electrical
requirements. The control system requires an earth ground for
proper operation.
CAUTION: Do not connect aluminum wire between
disconnect switch and furnace. Use only copper wire.
Make all electrical connections in accordance with the current
edition of the National Electrical Code (NEC) ANSI /NFPA
—9—
FURNACE
CD5 OR CK5
COIL ASSEMBLY
OR KCAKC
COIL BOX
COMBUSTIBLE
FLOORING
"4"-- SHEET METAL
PLENUM
FLOOR
OPENING —�
5
A96284
Fig. 7— Furnace, Plenum, and Coil Assembly or Coil Box
Installed on a Combustible Floor
GAS
SUPPLY
I
is
Fe
■
MANUAL I
SHUTOFF ■
VALVE (REQUIRED) �����i��
UNION
SEDIMENT
TRAP
O O
Fig. 8— Typical Gas Pipe Arrangement A89414
70 -1999 and any local codes or ordinances that might apply. For
Canadian installations, all electrical connections must be made in
accordance with CSA C22.1 Canadian Electrical Code or authori-
ties having jurisdiction.
NOTE: Proper polarity must be maintained for 115 -v wiring. If
polarity is incorrect, the furnace control status LED will flash
rapidly and prevent heating operation.
MO2.• 14
ANGLE
IRON OR
EQUIVALENT
(A) PREFERRED ROD LOCATION
(B) ALTERNATE ROD LOCATION
LINE CONTACT ONLY PERMISSIBLE BETWEEN
LINES FORMED BY INTERSECTIONS OF
THE TOP AND TWO SIDES OF THE FURNACE
JACKET AND BUILDING JOISTS,
STUDS, OR FRAMING.
MANUAL SHUTOFF
GAS VALVE
SEDIMENT
TRAP
(A) LOCATION
USING DIMPLE
LOCATORS
D (SEE DIMENSIONAL 3 1s -IN. HEX NUT
WG FOR RE WASHER ROD
LOCATIONS)
Fig. 9— Typical Attic Installation
Fig. 10— Horizontal Crawlspace Installation on Hanger Rods
—10—
(B)
30 -IN. MIN
R WORK AREA
NOTES: 1. A 1 In. clearance minimum between top of
furnace and combustible material.
2. The entire length of furnace must be
supported when furnace is used in horizontal
position.
A97516
A96633
M01. 195
NOMINAL
IRON PIPE
INTERNAL
DIAMETER
LENGTH OF PIPE (FT)
10
20
30
40
50
SIZE (IN.)
(IN.)
1/2
0.622
175
120
97
82
73
3/4
0.824
360
250
200
170
151
1
1.049
680
465
375
320
285
1 -1/4
1.380
1400
950
770
660
580
1-1/2
1.610
2100
1460
1180
990
900
FURNACE CASING WIDTH
FILTERS
D
14 -3/16
(2)
16 X 20 X 1
15
-3/8
17 -1/2
(2)
16 X 20 X 1
14
-3/4
21
(2)
16 X 20 X 1
13
-3/4
24-1/2
(2)
16 X 20 X 1
12
-1/2
O
IIIII
IIII
1•iiii lIII
Fig. 11— Horizontal Installation on Blocks
FIELD - SUPPLIED
FILTER RETAINERS
A95235
A82173
Fig. 12— Horizontal Filter Arrangement
—)TABLE 4— FILTER RETAINER (IN.)
WARNING: The cabinet must have an uninterrupted or
unbroken ground according to NEC ANSI/NFPA 70-
1999 and Canadian Electrical Code CSA C22.1 or local
codes to minimize personal injury if an electrical fault
should occur. This may consist of electrical wire or
conduit approved for electrical ground when installed in
accordance with existing electrical codes. Do not use gas
piping as an electrical ground.
B. 24-v Wiring
Refer to ESD Precautions Procedure before proceeding with 24 -v
connections.
Make field 24 -v connections at the 24 -v terminal block. (See Fig.
14.) Connect terminal Y /Y2 as shown in Fig. 15 or 16 for proper
operation in cooling mode. Use AWG No. 18 color- coded, copper
thermostat wire only.
When furnace is installed in horizontal position with RH discharge
air, 24 -v wire connections can be made easier by removing the 2
control box mounting screws and letting control box turn so that
24 -v screw terminals are visible. Be sure to reinstall control box
after connections are made.
The 24 -v circuit contains an automotive -type, 3 -amp fuse located
on main control. Any 24 -v electrical shorts during installation,
service, or maintenance could cause this fuse to blow. If fuse
replacement is required, use ONLY a 3 -amp fuse. The control will
flash code 24 when fuse needs replacement.
C. Accessories
1. Electronic air cleaner (EAC)
—I I—
RETURN -AIR
PLENUM
ACCESS DOOR
AIRFLOW
INSTALLATION .17. ,A
POSITION tr1 d /
OF FILTERS '� ly?4 / {
Fig. 13— Downflow Filter Arrangement A88486
TABLE 5— MAXIMUM CAPACITY OF PIPE*
Cubic ft of gas per hr for gas pressures o 0.5 psig (14 -in. wc) or less, and a
supply line pressure drop of 0.5 -in. wc (based on a 0.60 specific gravity gas).
Ref: Table 10 -2, NFPA 54 - 1996.
A terminal block (EAC -I [hot] and EAC -2 [neutral]) is
provided for EAC connection. (See Fig. 14.) The terminals
are energized with 115v, I -amp maximum during blower
motor operation.
2. Humidifier (HUM)
Screw terminals (HUM -I and COM) are provided for 24 -v
humidifier connection. The terminals are energized with
24v, 0.5 -amp maximum when the gas valve is energized.
X. VENTING
Refer to the enclosed Installation Instructions, (Vent Tables For I-
and 2 -Stage Category I Fan - Assisted Furnaces) for quick, easy
reference, and national or local installation code such as National
Fuel Gas Code NFPA 54 -1999 /ANSI Z223.1 -1999 in the United
States, or the National Standard of Canada Natural and Propane
Installation Codes CAN /CGA- B149.1- and .2 -M95 in Canada, for
proper vent sizing and installation requirements.
After fully assembling the vent connector to the furnace flue collar,
securely fasten the vent connector to the collar with 2 field -
supplied, corrosion - resistant, sheet metal screws located 180
degrees apart and midway up the collar.
The horizontal portion of the venting system shall maintain a
minimum of 1 /4 -in. upward slope per linear ft, and it shall be
rigidly supported every 5 ft or less with hangers or straps to ensure
that there will be no movement after installation.
Mo•tq5
NIT
UNIT
U
VOLTS—
HERTZ—
PHASE
OPERATING
VOLTAGE RANGE
MAX
UNIT
AMPS
MIN
WIRE
GAGE
MAX WIRE
LENGTH
FT*
MAXIMUM
FUSE OR
CKT BKR AMPSt
Max'
Min"
024065
115 -60-1
127
104
8.0
14
46
15
036065
115 -60-1
127
104
10.5
14
35
15
036085
115 -60-1
127
104
12.0
14
30
15
048085
115 -60-1
127
104
14.2
14
26
15
048105
115 -60-1
127
104
13.2
14
29
15
060105
115 -60-1
127
104
17.2
12
33
20
060125
115-60 -1
127
104
17.9
12
32
20
EAC - ELECTRONIC
AIR CLEANER
(115 -VAC 1 AMP MAX)
�1 4I]
w
115 -V FUSED
D SCONNECT
SWITCH
(WHEN REQUIRED)
® / FU E
MN
Fig. 14— Control Center
FIVE
WIRE
TWO -WIRE
HEATING -
ONLY
FURNACE AND
BLOWER OFF DELAY
SETUP SWITCHES
rt7 GND
JUNCTION
BOX
CONTROL
BOX
24 -V
TERMINAL
BLOCK
FURNACE
LED -
DIAGNOSTIC
LIGHT
TWIN /TEST
TERMINAL
HUM -
HUMIDIFIER
(24 -VAC 0.5
AMP MAX)
24 -VOLT
THERMOSTAT
TERMINALS
A93348
TABLE 6 ELECTRICAL DATA
• Permissible limits of the voltage range at which the unit will operate satisfactori y.
t Time -delay type is recommended.
Length shown is as measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.
1 -STAGE THERMOSTAT TERMINALS
1
1
I 1 I
L L J
1 1 1
—12—
1
XI. START -UP, ADJUSTMENT, AND SAFETY CHECK
A. General
The furnace must have a 115 -v power supply properly connected
and grounded. Correct polarity must be maintained to enable gas
heating operation.
The gas service pressure must not exceed 0.5 psig (14 -in. wc), and
be no less than 0.16 psig (4.5 -in. wc).
Thermostat wire connections at R and W/W 1 are the minimum
required for gas heating operation. W2 must be connected for
2 -stage heating thermostats. Com, Y/Y2, and G are required for
cooling, heat pumps, and some clock thermostats. These must be
made at 24 -v terminal block on control. (See Fig. 14.)
This furnace can be installed with either single -stage heating or
2 -stage heating thermostat.
For single -stage thermostats, connect thermostat W to W/W I at
furnace control terminal block. (See Fig. 15.) For single -stage
thermostats the control determines, based on length of previous
heating on and off cycles, when to operate in low- and high -gas
heat for optimum comfort. Setup Switch -2 (SW -2) must be in the
factory- shipped OFF position. See Fig. 17 and Tables 6 and 7 for
setup switch information.
I I I
1 I I I
I I I
CONDENSING
UNIT
FIELD 24 -V WIRING
- - -- FIELD 115 -, 208/230 -, 460 -V WIRING
— FACTORY 24 -V WIRING
— FACTORY 115 -V WIRING
FIELD - SUPPLIED
FUSED DISCONNECT
2 - 08/230.OR
-- 4VE EE
-- THR
PHASE
-- 208/230 -V
- PINGLE
— PHASE
NOTES: 1. Connect Y- terminal as shown for proper operation.
2. Some thermostats require a "C" terminal connection as shown.
3. If any of the original wire, as supplied, must be replaced,
use same type or equivalent wire.
Fig. 15— Heating and Cooling Application Wiring Diagram With 1 -Stage Thermostat and Condensing Unit
A99071
Moa -yes
SETUP
SWITCH NO.
NORMAL
POSITION
DESCRIPTION OF USE
SW -1
Only High -Gas Heat
OFF
(Staged Gas
Heat)
Turn switch on to obtain only
high- gas -heat operation on
any call for heat regardless of
whether R -W/W1, or
R -W/W1, -W2 is closed. SW -1
overrides SW -2.
SW -2
Low -Gas Heat
(Adaptive Algorithm)
OFF
(Single-Stage
Thermostat)
Turn switch off for installations
with single -stage thermostats;
control selects low -gas -heat
or high- gas -heat operation
based on previous cycles.
Turn switch on for installations
with 2 -stage thermostats to
permit only low- gas -heat op-
eration in response to closing
R -WAN1. High -gas heat is
supplied only when R to
W/W1 and W2 is closed.
SW-3 and
SW4
ON OFF
Switches control gas heating
algorithm blower off delay.
(See Table 8.)
DESIRED HEATING
ALGORITHM OFF DE-
LAY (SEC)
SETUP SWITCH
SW -3
SW -4
90
OFF
OFF
135
OFF
ON
180
ON
OFF
225
ON
ON
!i_
AIL
• •{ "L}• x
• �y7� •
=GND
r `GND
115 -V FUSED
DISCONNECT
SWITCH
(WHEN REQUIRED)
SEVEN
WIRE
THREE -WIRE
HEATING -
ONLY
JUNCTION
BOX
•
BOX
FURNACE
2 -STAGE THERMOSTAT TERMINALS
w2 I I I
COM=--- --1--r--r–t–
(WA
VN,
•
R • - -}-
G'--
24 -V
TERMINAL
BLOCK
If 2 -stage heating thermostat is to be used, move SW -2 to ON
position at end of furnace installation. This overrides built -in
control process for selecting high and low stage and allows 2 -stage
thermostat to select gas heating modes. The W2 from thermostat
must be connected to W2 on control terminal block. (See Fig. 16.)
Before operating furnace, check each manual reset switch for
continuity. If necessary, press and release button to reset switch.
TABLE 7- SETUP SWITCH DESCRIPTION
m
CAUTION: This furnace is equipped with 2 manual
reset limit switches in gas control area. The switches will
open and shut off power to gas valve if a flame rollout or
an overheating condition occurs in gas control area. DO
NOT bypass switches. Correct inadequate combustion air
supply, component failure, restricted flue gas passageway
before resetting switches.
B. Sequence of Operation
Using the schematic diagram follow sequence of operation through
different modes. (See Fig. 18.) Read and follow wiring diagram
very carefully.
W2 Wt c2"9 T Yt C
—13—
FIELD 24 -V WIRING
- - -- FIELD 115 -, 208/230 -, 460 -V WIRING
— FACTORY 24 -V WIRING
— FACTORY 115 -V WIRING
▪ J 2 -SPEED
CONDENSING
UNIT
FIELD - SUPPLIED
FUSED DISCONNECT
GND
208/230- OR
460 -V
– THREE
PHASE
– 1208/230 -V
__ `SINGLE
`PHASE
NOTES: 1. Connect Y- terminal as shown for proper operation.
2. Some thermostats require a "C" terminal connection as shown.
3. If any of the original wire, as supplied, must be replaced,
use same type or equivalent wire.
Fig 16— Heating and Cooling Application Diagram With 2 -Stage Thermostat and Condensing Unit
TABLE 8— BLOWER OFF DELAY
SETUP SWITCH POSITION
A99072
4 3
2
1
OFF
ON
BLOWER -
OFF
DELAY
LOW
HEAT
(ADAPTIVE
ALGORITHM)
HIGH
HEAT
ONLY
A96402
Fig. 17 —Setup Switches on Control Center
(Factory Settings)
NOTE: If power interruption occurs during "call for heat" (W/W1
or W/W 1-and-W2), control starts 90 -sec blower only on period 2
sec after power is restored if thermostat is still calling for gas
Moa1q& •
heating. The red LED flashes code 12 during 90 -sec period, after
which LED will be on continuously as long as no faults are
detected. After 90 -sec period, furnace responds to thermostat
normally.
Blower door must be installed for power to be conducted through
blower door interlock switch ILK to furnace control CPU, trans-
former TRAN, inducer motor 1DM, blower motor BLWM, hot
surface ignitor HSI, and gas valve GV.
1. Adaptive Heating Mode — Single -Stage Thermostat and
2 -Stage Heating
(See Fig. 16 for thermostat connections.)
NOTE: With high- heat -only switch SW -I off, low -heat -only
switch SW -2 selects either low -heat -only operation mode when on
(see item 2. below), or adaptive heating mode when off in response
to "call for heat." (See Fig. 17.) When high- heat -only switch SW -I
is on, it always causes high -gas -heat operation when R -W /W I
circuit is closed, regardless of the setting of low -heat -only switch
SW -2.
This furnace can operate as a 2 -stage furnace with a
single -stage thermostat because furnace control CPU in-
cludes a programmed adaptive sequence of controlled
operation which selects low- gas -heat or high - gas -heat op-
eration. This selection is based upon stored history of the
length of previous gas heating on /off periods of single -stage
thermostat.
The furnace starts up in either low- or high -gas heat. If
furnace starts up in low -gas heat, control CPU determines
low -gas heat on time (from 0 to 16 minutes) which is
permitted before switching to high -gas heat.
If power is interrupted, stored history is erased, and control
CPU selects low -gas heat for up to 16 minutes and then
switches to high -gas heat as long as thermostat continues to
"call for heat." Subsequent selection is based on stored
history of thermostat cycle times.
When the wall thermostat "calls for heat," R -W 1 circuit
closes. The furnace control performs a self - check, verifies
low -heat and high -heat pressure switch contacts LPS and
HPS are open, and starts inducer motor IDM in low speed
or high speed as appropriate.
a. Inducer prepurge period —As inducer motor IDM comes
up to low speed or high speed, the low -heat pressure
switch contacts LPS (or LPS and HPS) close to begin a
15 -sec prepurge period.
b. Ignitor warm -up—At the end of prepurge period, hot
surface ignitor HSI is energized for a 17 -sec ignitor
warm -up period.
c. Trial- for - ignition sequence —When ignitor warm -up pe-
riod is completed, main gas valve relay contacts
MGVR -I and -2 close to energize low -heat gas valve
solenoid GV, gas valve opens, and 24 -v power is
supplied for a field - installed humidifier at terminals
HUM and Corn. Low -heat gas valve solenoid GV
permits gas flow to the burners where it is ignited. After
5 sec, ignitor HSI is de- energized, and a 2 -sec flame -
proving period begins.
If furnace control CPU selects high -gas -heat operation,
high -heat gas valve solenoid GV is also energized after
normally closed high -heat pressure switch relay HPSR
closes and after inducer motor 1DM goes to high speed
and provides sufficient pressure to close high -heat pres-
sure switch HPS. HPSR is open while furnace is pow-
ered in standby mode. If high -heat pressure switch HPS
fails to close and low -heat pressure switch LPS closes,
furnace operates at low -heat gas flow rate until high -heat
pressure switch closes.
—14—
d. Flame- proving —When burner flame is proved at flame -
proving sensor electrode FSE, control CPU begins
blower on delay period and continues to hold gas valve
GV open. If burner flame is not proved within 2 sec,
control CPU closes gas valve GV, and control CPU
repeats ignition sequence for up to 3 more trials -for-
ignition before going to ignition lockout. LOCKOUT IS
RESET AUTOMATICALLY after 3 hr, or by momen-
tarily interrupting 115 -v power to furnace, or by inter-
rupting 24 -v power at SECT or SEC2 to control CPU
(not at W/W I , G, R, etc.). Opening thermostat R -W
circuit will not reset ignition lockout.
If flame is proved when flame should not be present,
control CPU locks out of gas heating mode and operates
inducer motor IDM on high speed until flame is no
longer proved.
e. Blower on delay —If burner flame is proven, 45 sec after
gas valve GV is opened blower motor BLWM is
energized on appropriate heating speed, low- gas -heat or
high -gas -heat speed. Simultaneously, EAC terminals
EAC -I and EAC -2 are energized with I15v and remain
energized as long as blower motor BLWM is energized.
f. Switching from low- to high -gas heat —If furnace control
CPU switches from low -gas heat to high -gas heat,
control CPU switches inducer motor IDM speed from
low to high. The high -heat pressure switch relay HPSR
closes. When inducer motor IDM provides sufficient
pressure to close high -heat pressure switch HPS, high -
heat gas valve solenoid GV is energized. Blower motor
BLWM switches speed for high -gas heat 5 sec after
control CPU switches from low -gas heat to high -gas
heat.
g. Switching from high- to low -gas heat -- Control CPU
will not switch from high -gas heat to low -gas heat while
thermostat R -W circuit is closed when a single -stage
thermostat is used.
h. Blower off delay —When thermostat is satisfied, R -W
circuit is opened, de- energizing gas valve GV, stopping
gas flow to burners, and de- energizing humidifier termi-
nals HUM and Com. Inducer motor IDM remains
energized for a 5 -sec post -purge period. Blower motor
BLWM and EAC terminals EAC -1 and EAC -2 remain
energized for 90, 135, 180, or 225 sec (depending on
selection at blower off delay switches SW -3 and SW -4).
Furnace control CPU is factory set for a 135 -sec blower
off delay.
2. Non - Adaptive Heating Mode — Two -Stage Thermostat and
2 -Stage Heating
(See Fig. 16 for thermostat connections.)
NOTE: The low -heat -only switch SW -2 ON selects low -heat-
only operation mode in response to closing thermostat R -W /W l
circuit. When high- heat -only switch SW -I is off, closing thermo-
stat R to W 1-and-W2 circuits is required for high - gas -heat
operation. When high- heat -only switch SW -1 is on, it always
causes high - gas -heat operation when R -W /W I circuit is closed,
regardless of setting of low- heat -only switch SW -2 and regardless
of whether R -W2 circuit is closed or open.
The start -up and shutdown functions and delays described
in item 1 above apply to 2 -stage heating mode as well,
except for switching from low- to high -gas heat and vice
versa.
a. When wall thermostat "calls for heat," R -W /W 1 circuit
closes for low -gas heat or R to W 1- and -W2 circuits
close for high -gas heat. The furnace control performs a
M 0 -19
‚"stow
D
0
0
0
- S I
I
NOTICE: IF THE DOCUMENT IN THIS FRAME IS LESS CLEAR THAN
THIS NOTICE IT IS DUE TO THE QUALITY OF THE DOCUMENT.
self - check, verifies low -heat and high -heat pressure
switch contacts LPS and HPS are open, and starts
inducer motor IDM in low speed or high speed as
appropriate.
b. Switching from low- to high -gas heat —If thermostat
R -W/W I circuit for low -gas heat is closed and R -W2
circuit for high -gas heat closes, control CPU switches
inducer motor IDM speed from low to high. The
high -heat pressure switch relay HPSR closes. When
inducer motor 1DM provides sufficient pressure to close
high -heat pressure switch HPS, high -heat gas valve
solenoid GV is energized. Blower motor BLWM
switches speed for high -gas heat 5 sec after R -W2 circuit
closes.
c. Switching from high- to low -gas heat —If thermostat
R -W2 circuit for high -gas heat opens and R -W /W I
circuit for low -gas heat remains closed, control CPU
switches inducer motor IDM speed from high to low.
The high -heat pressure switch relay HPSR opens to
de- energize high -heat gas valve solenoid GV. When
inducer motor IDM reduces pressure sufficiently, high -
heat pressure switch HPS opens. The low -heat gas valve
solenoid GV remains energized as long as low -heat
pressure switch LPS remains closed. Blower motor
BLWM switches speed for low -gas heat 5 sec after
R -W2 circuit opens.
3. Cooling Mode
a. Single -Speed Cooling Outdoor Unit
(See Fig. 15 for thermostat connections.)
The thermostat closes R to G -and -Y circuits. The
R -Y circuit starts outdoor unit, and R to G -and -Y
circuits start furnace blower motor BLWM on
high -cool speed.
(2.) The EAC terminals EAC -1 and EAC -2 are ener-
gized with I15v when blower motor BLWM is
operating.
When thermostat is satisfied, R to G -and -Y cir-
cuits are opened. The outdoor unit stops, and
furnace blower motor BLWM continues operating
on high -cool speed for an additional 90 sec.
b. Two -Speed Cooling Outdoor Unit
(See Fig. 16 for thermostat connections.)
(I.) The thermostat closes R to G- and -YI circuits for
low cooling or closes R to G- and -Yl- and -Y /Y2
circuits for high cooling. The R -Y I circuits start
outdoor unit on low- cooling speed, and R -G circuit
starts furnace blower motor BLWM on low - cooling
speed (same speed as for low -gas heat). The R to
YI- and -Y2 circuits start outdoor unit on high -
cooling speed, and R to G- and -Y2 circuits start
furnace blower motor BLWM on high - cooling
speed.
NOTE: Y1 is not located on furnace control, but is found in
outdoor unit. The furnace control CPU controls blower motor
BLWM speed by sensing only G for low - cooling speed and Y/Y2
for high - cooling speed.
(2.) The EAC terminals EAC -1 and EAC -2 are ener-
gized with 115v when blower motor BLWM is
operating on either cooling speed.
(3.) When thermostat is satisfied, R to G- and -YI or
R to G- and -Yl- and -Y /Y2 circuits open. The out-
door unit stops, and furnace blower continues op-
erating on cooling speed for an additional 90 sec.
(I.)
(3.)
—16—
(3.)
(I.)
4. Continuous Blower Mode
a. When R to G circuit is closed by thermostat, blower
motor BLWM operates on low- gas -heat speed (identical
to low -cool speed). Terminals EAC -1 and EAC -2 are
energized with I I 5v as long as blower motor BLWM is
energized.
b. During "call for heat," blower motor BLWM stops
during ignitor warm -up (I7 sec), ignition (7 sec), and
blower on delay (45 sec), allowing furnace heat ex-
changers to heat up quickly.
(I.) The blower motor BLWM reverts to continuous
blower speed after heating cycle is completed. In
high -gas -heat, furnace control CPU holds blower
motor BLWM at high - gas -heat speed during se-
lected blower off delay period before reverting to
continuous blower speed.
(2.) When thermostat "calls for low cooling," blower
motor BLWM continues to operate on low -cool
speed. When thermostat is satisfied, blower motor
BLWM continues on continuous blower speed.
When thermostat "calls for high cooling," blower
motor BLWM operates on high -cool speed. When
thermostat is satisfied, blower motor BLWM oper-
ates an additional 2 sec on high -cool speed before
reverting back to continuous blower speed.
(4.) When R to G circuit is opened, blower motor
BLWM continues operating for an additional 90 sec
if no other function requires blower motor BLWM
operation.
5. Heat Pump
NOTE: An accessory interface kit or manufacturing accessory
dual fuel thermeostat is required with single -speed heat pumps.
See interface kit Installation Instructions or manufacturing acces-
sory dual fuel thermostat for single -speed heat pump thermostat
and interface connections. No interface kit is needed for 2 -speed
heat pumps. See 2 -speed heat pump Installation Instructions for
thermostat connections.
a. Single -Speed Heat Pump Cooling
The thermostat and interface kit close R to G -and-
Y/Y2 circuit to start furnace blower motor BLWM
on high- cooling speed. (Y /Y2 input to furnace
control is necessary to provide adequate cooling
airflow.)
(2.) The EAC terminals EAC -I and EAC -2 are ener-
gized with I15v when blower motor BLWM is
operating.
(3.) When thermostat is satisfied, furnace blower motor
BLWM continues operating on high- cooling speed
for an additional 90 sec.
b. Two -Speed Heat Pump Cooling
(I.) The thermostat R to G circuits start furnace blower
motor BLWM on low - cooling speed. Thermostat
R to G- and -Y /Y2 circuits start furnace blower mo-
tor BLWM on high -cool speed.
NOTE: The furnace control CPU controls blower motor BLWM
speed by sensing only G (for low - cooling speed) and Y2 (for
high- cooling speed).
(2.) The EAC terminals EAC-1 and EAC -2 are ener-
gized with 115v when blower motor BLWM is
operating on either cooling speed.
MoiqS'
(3.)
(3.) When thermostat is satisfied, furnace blower motor
BLWM continues operating on cooling speed for an
additional 90 sec.
c. Single -Speed Heat Pump Heating
(I.) The thermostat and accessory interface kit R to G-
and-Y/Y2 circuits start furnace blower motor
BLWM on heat pump high -heat speed (identical to
high -cool speed).
(2.) The EAC terminals EAC-1 and EAC -2 are ener-
gized with 115v when blower motor BLWM is
operating.
(3.) When thermostat is satisfied, furnace blower motor
BLWM continues operating on heat pump high -heat
speed for an additional 90 sec.
d. Two -Speed Heat Pump Heating
(1.) The thermostat closes R to G circuit for low heat
and starts furnace blower motor BLWM on heat
pump low -heat speed (identical to low - cooling
speed). Closing R -Y/Y2 circuit to furnace provides
blower motor BLWM heat pump high -heat speed.
NOTE: The furnace control CPU controls blower motor BLWM
speed by sensing only G (for heat pump low -heat speed) and Y2
(for heat pump high -heat speed).
(2.) The EAC terminals EAC -I and EAC -2 are ener-
gized with I15v when blower motor BLWM is
operating on either heating speed.
When thermostat is satisfied, R to G or R to G-
and-Y2 circuits are opened. After opening R to
G- and -Y2 circuit, the furnace blower motor BLWM
continues operating on heating speed for an addi-
tional 90 sec.
(4.) Opening R -Y2 circuit reduces blower motor
BLWM speed to heat pump low -heat speed.
6. Defrost
a. When furnace control R to W /Wl- and -Y /Y2 circuits are
closed, furnace control CPU continues blower motor
BLWM operation at heat pump heating speed until end
of prepurge period, then shuts off until end of HSI ignitor
on period (22 sec).
b. When installed with a heat pump, furnace control CPU
automatically holds blower off time to 22 sec during HSI
ignitor on period. After 17 sec of HSI ignitor on period,
a trial - for - ignition sequence occurs as described above
for gas heating. After flame is proved and without
blower on delay, blower motor BLWM then operates on
high -gas -heat speed during defrost. For both single -
speed and 2 -speed heat pumps, defrost mode is in
high -gas heat only.
c. When furnace control R to W/W I circuit is opened,
furnace control CPU begins normal inducer post -purge
period, and blower motor BLWM remains on for blower
off delay period. If R -G circuit remains closed, blower
motor BLWM reverts to continuous operation.
C. Start-Up Procedures
I. Component test —The furnace features a component test
system to help diagnose a system problem in case of
component failure. To initiate component test procedure,
ensure that there are no thermostat inputs to control and that
all time delays have expired. Short TWIN/TEST terminal to
ground or Com for I to 4 sec. See Fig. 14 for terminal
locations.
—17—
NOTE: The component test feature will not operate if control is
receiving any thermostat signals and until all time delays have
expired.
The component test sequence is as follows:
a. The furnace control checks itself, operates inducer motor
on low speed for 7 sec and on high speed for 7 sec, then
stops.
b. The hot surface ignitor is then energized for 15 sec, then
de- energized.
c. The blower motor operates on low- gas - heat/heat pump
low - heat/low- cool /continuous fan speed for 7 sec, then
stops.
d. The blower motor operates on high - gas -heat speed for 7
sec, then stops. The gas valve and humidifier terminal
HUM are not energized for safety reasons.
NOTE: The EAC terminals are energized when blower is ener-
gized.
e. The blower operates on heat pump high-heat/high-cool
speed for 7 sec, then stops.
2. After all connections have been made, purge gas lines and
check for leaks.
WARNING: Never purge a line into a combustion
chamber. Never use matches, candles, flame, or other
sources of ignition to check for gas leakage. Use a
soap- and -water solution to check for gas leaks. A failure
to follow this warning could result in fire, explosion,
personal injury, or death.
3. To operate furnace, follow procedures on operating instruc-
tion label attached to furnace.
4. With furnace operating, set thermostat below room tem-
perature and observe that furnace goes off. Set thermostat
above room temperature and observe that furnace restarts.
D. Adjustments
I. Set gas input rate.
Furnace gas input rate on rating plate is for installations at
altitudes up to 2000 ft.
In the U.S.A., input rating for altitudes above 2000 ft must
be reduced by 4 percent for each 1000 ft above sea level.
In Canada, input rating must be derated by 10 percent for
altitudes of 2000 ft to 4500 ft above sea level.
Furnace input rate must be within ±2 percent of input on
furnace rating plate.
a. Determine natural gas orifice size and manifold pressure
for correct input.
(1.) Obtain yearly heat value average (at installed alti-
tude) from local gas supplier.
(2.) Obtain yearly specific gravity average from local
gas supplier.
(3.) Verify furnace model. Table 10 can only be used for
model 331AAV Furnaces.
(4.) Find installation altitude in Table 10.
NOTE: For Canada altitudes of 2000 to 4500 ft, use U.S.A.
altitudes of 2001 to 3000 ft in Table 10.
(5.) Find closest natural gas heat value and specific
gravity in Table 10.
(6.) Follow heat value and specific gravity lines to point
of intersection to find orifice size and low- and
high -heat manifold pressure settings for proper
operation.
MO2. -AC
ALTITUDE
(FT)
% OF
DERATE
DERATE MULTIPLIER
FACTOR FOR U.S.A.*
0-2000
0
1.00
2001- 3000
8
0.90
3001 -4000
12 - 16
0.86
4001 -5000
16 - 20
0.82
5001 -6000
20
0.78
6001 -7000
24 - 28
0.74
7001 -8000
18 - 32
0.70
8001 -9000
32 - 36
0.66
9001 - 10,000
36
0.62
EXAMPLE: (0 -2000 ft altitude)
Heating value = 1075 Btu /cu ft
Specific gravity = 0.62
Therefore: Orifice No. 45
Manifold pressure: 3.7 -in. wc for high heat
I.5 -in. wc for low heat
* Furnace is shipped with No. 45 orifices. In this example,
all main burner orifices are the correct size and do not need
to be changed to obtain proper input rate.
(7.) Check and verify burner orifice size in furnace.
NEVER ASSUME ORIFICE SIZE; ALWAYS
CHECK AND VERIFY.
b. Adjust manifold pressure to obtain input rate.
(I.) Remove caps that conceal adjustment screws for
low- and high -heat gas valve regulators. (See Fig.
19.)
(2.) Move setup switch SW -2 on control center to ON
position. (See Fig. 17.) This keeps furnace locked in
low -heat operation.
Jumper R and W/W I thermostat connections on
control center to start furnace.
(4.) Turn low -heat adjusting screw (5/64 hex Allen
wrench) counterclockwise (out) to decrease input
rate or clockwise (in) to increase input rate.
NOTE: DO NOT set low -heat manifold pressure less than I.3 -in.
we or more than I.7 -in. we for natural gas. If manifold pressure is
outside this range, change main burner orifices.
(3.)
CAUTION: DO NOT bottom out gas valve regulator
adjusting screw. This can result in unregulated manifold
pressure and result in excess overtire and heat exchanger
failures.
NOTE: If orifice hole appears damaged or it is suspected to have
been redrilled, check orifice hole with a numbered drill bit of
correct size. Never redrill an orifice. A burr-free and squarely
aligned orifice hole is essential for proper flame characteristics.
(5.) Move setup switch SW -2 to OFF position after
completing low -heat adjustment.
(6.) Jumper R and W2 thermostat connections on con-
trol center. (See Fig. 14.) This keeps furnace locked
in high -heat operation.
(7.) Turn high -heat adjusting screw (5/64 hex Allen
wrench) counterclockwise (out) to decrease input
rate or clockwise (in) to increase rate.
NOTE: DO NOT set high -heat manifold pressure less than 3.2 -in.
we or more than 3.8 -in. we for natural gas. If manifold pressure is
outside this range, change main burner orifices.
(8.) When correct input is obtained, replace caps that
conceal gas valve regulator adjustment screws.
Main burner flame should be clear blue, almost
transparent. (See Fig. 20.)
(9.) Remove jumper R to W2.
c. Verify natural gas input rate by clocking gas meter.
UNITED STATES
At altitudes above 2000 ft, this furnace has been ap-
proved for a 4 percent derate for each 1000 ft above sea
level. See Table 9 for derate multiplier factor and
example.
-18-
BURNER
ORIFICE
Derate multiplier facto is based on midpoint altitude for altitude range.
A93059
LE
CAUTION: DO NOT redrill orifices. Improper drilling
(burrs, out -of -round can cause holes, etc.) excessive
burner noise and misdirection of burner flames. This can
result in flame impingement of burners and heat exchang-
ers, causing failures.
TABLE 9 ALTITUDE DERATE MULTIPLIER FOR U.S.A.
EXAMPLE:
85,000 Btuh input furnace installed at 4300 ft.
Furnace Input Derate Furnace Input Rate
Rate at X Multiplier = at Installation
Sea Level Factor Altitude
85,000 X 0.82 69,700
CANADA
At installation altitudes from 2000 to 4500 ft, this
furnace must be derated 10 percent by an authorized Gas
Conversion Station or Dealer. To determine correct input
rate for altitude, see example above and use 0.82 as
derate multiplier factor.
a. Check that gas valve adjustment caps are in place for
proper input to be clocked.
b. Obtain yearly heat value average for local gas supply.
NOTE: Be sure heating value of gas used for calculations is
correct for your altitude. Consult local gas utility for altitude
adjustment of gas heating value.
c. Check and verify orifice size in furnace. NEVER AS-
SUME THE ORIFICE SIZE. ALWAYS CHECK AND
VERIFY.
d. Turn off all other gas appliances and pilots.
e. Move setup switch SW -2 to ON position. (See Fig. 17.)
This keeps furnace locked in low -heat operation.
f. Jumper R to W/W I.
M 02 -1
Z
I
cell
QQ �
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00
co o
W W
J
WD
2
LL Q
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I- W
F. 0
Z I-
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0
0 -
0 1-
WW
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CU
0-
O~
Z
ALTITUDE
RANGE
(FT)
AVG GAS
HEAT VALUE
AT ALTITUDE
FT)
SPECIFIC GRAVITY OF NATURAL GAS
0.58
0.60
0.62
0.64
0.66
Orifice No.
Manifold
Pressure
High /Low
Orifice
No
Manifold
Pressure
High /Low
Orifice
No
Manifold
Pressure
High /Low
Orifice
No
Manifold
Pressure
High /Low
Orifice
No.
Manifold
Pressure
High /Low
U.S.A. and Canada
to
2000
_
850
875
900
925
975 _
1000
1025
1050
1075
1100
42
43
43
43
3.3/1.4
3.8/1.6
6/15
4
42
42
43
43
3.4/1.4
3.2/1.3
3.7/1.5
5/15
42
42
42
43
43
3.5/1.5
3.3/1.4
3.2/1.3
6/15
42
42
42
43
43
43
3.7/1.5
3.5/1.4
3.3/1.3
3.8/1.6
3.6/1.5
3.4/1.4
42
42
42
42
43
43
3.8/1.6
3.6/1.5
3.4/1.4
3.2/1.3
3.7/1.5
3.5/1.4
444
5
5
_.3...4
3.2/1.3
4444
5
5
3.5/1.4
3.3/1.4
3444
3.4/1.4
3.2/1.3
4444
3.7/1.5
3.5/1.5
3.4/1.4
3.2/1.3
34441
3.8/1.6
3.6/1.5
3.5/1.4
3.3/1.4
45
46
46
3.7/1.5
3.7/1.5
3.5/1.5
45
46
46
3.8/1.6
3.8/1.6
3.6/1.5
45
46
3.7/1.5
3.8/1.6
45
3.7/1.5
45
3.8/1.6
ALTITUDE
RANGE
(FT)
AVG GAS
HEAT VALUE
AT ALTITUDE
AT ALTITUDE
FT
(BTU/CU FT)
SPECIFIC GRAVITY OF NATURAL GAS
0.58
0.60
0.62
0.64
0.66
Orifice
No .
Manifold
Pressure
High /Low
Orifice
No '
Manifold
High /Low
Orifice
No '
Manifold
High /Low
Orifice
No
Manifold
Pressure
High /Low
Orifice
Orifi
No
Manifold
Pressure
High /Low
U.S.A. and Canada
U.S.A.
Altitudes
2001
to
3000
or
Canada
Altitudes
2000
to
4500
775
800
825
850
875
900
925
950
975
1000
1025
43
43
3.7/1.5
3.5/1.4
42
43
43
3.2/1.3
3.6/1.5
3.4/1.4
42
43
43
3.3/1.4
3.7/1.5
3.5/1.5
42
42
43
43
3.4/1.4
3.2/1.3
3.6/1.5
3.4/1.4
42
42
43
43
3.5/1.4
3.3/1.3
3.7/1.5
3.5/1.5
4444
3.8/1.6
3.6/1.5
3.4/1.4
3.2/1.3
444
3.7/1.5
3.5/1.4
3.3/1.4
4444
3.8/1.6
3.6/1.5
3.4/1.4
3.2/1.3
4441
3.7/1.5
3.5/1.4
3.3/1.4
4444
3.8/1.6
3.6/1.5
3.4/1.4
3.2/1.3
46
46
46
47
47
3.8/1.6
3.6/1.5
3.4/1.4
3.7/1.5
3.5/1.5
45
46
46
47
47
3.8/1.6
3.7/1.5
3.5/1.5
3.8/1.6
3.6/1.5
45
46
46
47
3.7/1.5
3.7/1.5
3.5/1.4
3.8/1.6
45
46
46
46
3.8/1.6
3.8/1.6
3.6/1.5
3.4/1.4
45
46
46
3.7/1.5
3.7/1.5
3.5/1.5
ALTITUDE
RANGE
(FT)
AVG GAS
HEAT VALUE
AT ALTITUDE
(BTU /CU FT)
SPECIFIC GRAVITY OF NATURAL GAS
0.58
0.60
0.62
0.64
0.66
Orifice
No
Manifold
Pressure
High /Low
Orifice
No
Manifold
Pressure
High /Lo
Orifice
No
Manifold
Pressure
High /Low
Orifice
No
Manifold
Pressure
High /Low
Orifice
No
Manifold
Pressure
High /Low
I U.S.A. Only
3001
to
4000
750
775
800
825
850
875
900
925
950
975
1000
43
3.5/1.4
43
3.6/1.5
43
3.7/1.5
42
3.2/1.3
42
3.3/1.4
3.7/1.5
3.5/1.4
3.8/1.6
43
3.4/1.4
43
3.5/1.4
43
3.6/1.5
43
3
3.5/1.5
3.7/1.5
3.8/1.6
43
3.4/1.4
43
3.3/1.4
4
3.4/1.4
3.5/1.5
3.7/1.5
3.8/1.6
3.6/1.5
3.4/1.4
3.2/1.3
45
3.8/1.6
3.2/1.3
4
3.3/1.4
4
3.4/1.4
46
3.7/1.5
45
3.7/1.5
3.2/1.3
3.3/1.3
3
46
3.5/1.5
46
3.7/1.5
46
3.8/1.6
45
3.7/1.5
47
47
47
48
3.8/1.6
3.6/1.5
3.4/1.4
3.7/1.5
46
47
47
48
3.5/1.4
3.7/1.5
3.5/1.5
3.8/1.6
46
46
47
47
3.6/1.5
3.4/1.4
3.7/1.5
3.5/1.4
46
46
47
47
3.7/1.5
3.5/1.5
3.8/1.6
3.6/1.5
46
46
46
47
3.8/1.6
3.6/1.5
3.4/1.4
3.7/1.5
TABLE 10 —MODEL 331AAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT
(TABULATED DATA BASED ON 21,000 BTUH HIGH HEAT /13,500 BTUH LOW HEAT PER BURNER,
DERATED 4% FOR EACH 1000 FT ABOVE SEA LEVEL I•
• For 060125 size only, input is 20,500 Stull for high fire. Deduct 0.1 -in. from manifold pressure shown in table. Change orifice size if manifold pressure falls below 3.2 -in
wc.
—19—
Moo -i9s
Z
W
�QQ �
JU
00
NO
J H
NIL
W
g Q
fn
I_ W
Z
I— O
Z I—
W
U �
0-
O H
W W
11. 0
L Z
t =
O F-
Z
ALTITUDE
RANGE
(FT)
AVG GAS
HEAT VALUE
AT ALTITUDE
(BTU/CU FT)
SPECIFIC GRAVITY OF NATURAL GAS
0.58
0.60
0.62
0.64
0.66
Orifice
No.
Manifold
Pressure
High /Low
Orifice
No.
Manifold
Pressure
High /Low
Orifice
No.
Manifold
Pressure
High /Low
Orifice
No
Manifold
Pressure
High /Low
Orifice
No
Manifold
Pressure
High /Low
725
3.8/1.6
43
3.4/1.4
43
3.5/1.4
43
3.6/1.5
43
3.7/1.5
750
4
3.5/1.5
3.6/1.5
3.8/1.6
43
3.4/1.4
43
3.5/1.4
775
3.3/1.4
3
3.4/1.4
3
3.5/1.5
3.6/1.5
3.7/1.5
4001
800
45
3.7/1.5
3.2/1.3
3.3/1.4
3
3.4/1.4
4
3.5/1.5
825
46
3.7/1.5
46
3.8/1.6
45
3.8/1.5
3.2/1.3
3.3/1.4
V1
to
850
46
3.5/1.4
46
3.6/1.5
46
3.7/1.5
46
3.8/1.6
45
3.8/1.6
875
47
3.7/1.5
46
3.4/1.4
46
3.5/1.5
46
3.6/1.5
46
3.7/1.5
5000
900
47
3.5/1.5
47
3.6/1.5
47
3.8/1.6
46
3.4/1.4
46
3.5/1.5
925
48
3.8/1.6
47
3.4/1.4
47
3.6/1.5
47
3.7/1.5
47
3.8/1.6
950
48
3.6/1.5
48
3.7/1.5
48
3.8/1.6
47
3.5/1.4
47
3.6/1.5
ALTITUDE
AVG GAS
HEAT VALUE
SPECIFIC GRAVITY OF NATURAL GAS
0.58
0.60
0.62
0.64
0.66
RANGE
(Fl)
AT ALTITUDE
(BTU/CU FT)
Orifice
No
Manifold
H Pressure
igh /Low
Orifice
No '
Manifold
High /Low
Orifice
No '
Manifold
High /Low
Orifice
No '
Manifold
High /Low
Orifice
No '
Manifold
High /Low
700
44
3.5/1.5
3.6/1.5
3.8/1.6
43
3.4/1.4
43
3.5/1.4
725
44
3.3/1.4
4
3.4/1.4
4
3.5/1.4
3.6/1.5
3.7/1.5
750
45
3.7/1.5
3.2/1.3
3.3/1.4
4
3.4/1.4
3
3.5/1.4
775
46
3.6/1.5
46
3.8/1.6
45
3.7/1.5
3.2/1.3
3.3/1.4
5001
800
46
3.4/1.4
46
3.5/1.5
46
3.7/1.5
46
3.8/1.6
45
3.7/1.5
825
47
3.7/1.5
47
3.8/1.6
46
3.4/1.4
46
3.6/1.5
46
3.7/1.5
11
to
850
47
3.4/1.4
47
3.6/1.5
47
3.7/1.5
47
3.8/1.6
46
3.5/1.4
875
48
3.7/1.5
48
3.8/1.6
47
3.5/1.4
47
3.6/1.5
47
3.7/1.5
6000
900
48
3.5/1.4
48
3.6/1.5
48
3.7/1.5
47
3.4/1.4
47
3.5/1.4
925
48
3.3/1.4
48
3.4/1.4
48
3.5/1.5
48
3.6/1.5
48
3.8/1.6
950
49
3.7/1.5
49
3.8/1.6
48
3.3/1.4
48
3.5/1.4
48
3.6/1.5
975
49
3.5/1.4
49
3.6/1.5
49
3.7/1.5
48
3.3/1.4
48
3.4/1.4
1000
49
3.3/1.4
49
3.4/1.4
49
3.6/1.5
49
3.7/1.5
49
3.8/1.6
SPECIFIC GRAVITY OF NATURAL GAS
ALTITUDE
AVG GAS
0.58
0.60
0.62
0.64
0.66
RANGE
(FT)
HEAT VALUE
AT ALTITUDE
(BTU /CU FT)
Orifice
Manifold
Pressure
Orifice
Manifold
Pressure
Orifice
Manifold
Pressure
Orifice
Manifold
Pressure
Orifice
Manifold
Pressure
No.
High /Low
No
High /Low
No.
High /Low
No
High /Low
No.
High /Low
650
44
3.5/1.5
3.7/1.5
3.8/1.6
43
3.4/1.4
43
3.5/1.4
675
44
3.3/1.4
3
3.4/1.4
3
3.5/1.4
44
3.6/1.5
343
3.7/1.5
700
45
3.7/1.5
3.2/1.3
3.3/1.3
44
3.4/1.4
3.5/1.4
6001
725
46
3.6/1.5
46
3.7/1.5
45
3.7/1.5
45
3.8/1.6
3.2/1.3
750
47
3.8/1.6
46
3.5/1.4
46
3.6/1.5
46
3.7/1.5
46
3.8/1.6
VI
to
775
47
3.6/1.5
47
3.7/1.5
47
3.8/1.6
46
3.5/1.4
46
3.6/1.5
800
48
3.8/1.6
47
3.5/1.4
47
3.6/1.5
47
3.7/1.5
47
3.8/1.6
7000
825
48
3.6/1.5
48
3.7/1.5
48
3.8/1.6
47
3.5/1.4
47
3.6/1.5
850
48
3.4/1.4
48
3.5/1.4
48
3.6/1.5
48
3.7/1.5
47
3.4/1.4
875
49
3.8/1.6
48
3.3/1.4
48
3.4/1.4
48
3.5/1.5
48
3.6/1.5
TABLE 10 —MODEL 331AAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT Continued
(TABULATED DATA BASED ON 21,000 BTUH HIGH HEAT /13,500 BTUH LOW HEAT PER BURNER,
DERATED 4% FOR EACH 1000 FT ABOVE SEA LEVEL)*
• For 060125 size only, Input is 20,500 Btuh for high fire. Deduct 0.1 -in. from manifold pressure shown in table. Change orifice size if manifold pressure falls below 3.2 -in
wc.
—20—
M - 1 95
ALTITUDE
RANGE
(F)
AVG GAS
HEAT VALUE
AT ALTITUDE
BTU /CU FT
( )
SPECIFIC GRAVITY OF NATURAL GAS
0.58
0.60
0.62
0.64
0.66
Orifice
No.
Manifold
Pressure
High /Low
Orifice
No
Manifold
Pressure
High /Low
Orifice
No
Manifold
Pressure
High /Low
Orifice
No
Manifold
Pressure
High /Low
Orifice
No
Manifold
Pressure
High /Low
625
44
3.3/1.4
44
3.4/1.4
44
3.5/1.5
44
3.6/1.5
3.7/1.5
650
45
3.7/1.5
45
3.8/1.6
44
3.3/1.3
44
3.4/1.4
3
3.5/1.4
675
46
3.6/1.5
46
3.7/1.5
46
3.8/1.6
45
3.8/1.6
3.2/1.3
7001
700
47
3.8/1.6
46
3.4/1.4
46
3.6/1.5
46
3.7/1.5
46
3.8/1.6
725
47
3.5/1.5
47
3.6/1.5
47
3.8/1.6
46
3.4/1.4
46
3.5/1.5
YE
to
750
48
3.7/1.5
47
3.4/1.4
47
3.5/1.5
47
3.6/1.5
47
3.7/1.5
775
48
3.5/1.5
48
3.6/1.5
48
3.8/1.6
47
3.4/1.4
47
3.5/1.4
8000
800
48
3.3/1.4
48
3.4/1.4
48
3.5/1.5
48
3.6/1.5
48
3.7/1.5
825
49
3.6/1.5
49
3.8/1.6
48
3.3/1.4
48
3.4/1.4
48
3.5/1.5
850
49
3.4/1.4
49
3.5/1.5
49
3.7/1.5
49
3.8/1.6
48
3.3/1.4
SPECIFIC GRAVITY OF NATURAL GAS
ALTITUDE
AVG GAS
0.58
0.60
0.62
0.64
0.66
RANGE
(FT)
HEAT VALUE
AT ALTITUDE
(BTU /CU FT)
Orifice
No.
Manifold
Pressure
Orifice
No
Manifold
Pressure
Orifice
Manifold
Pressure
Orifice
Manifold
Pressure
Orifice
Manifold
Pressure
High /Low
High /Low
No
High /Low
No
High /Low
No
High /Low
600
45
3.7/1.5
44
3.2/1.3
44
3.3/1.4
44
3.4/1.4
44
3.5/1.4
625
46
3.6/1.5
46
3.7/1.5
46
3.8/1.6
45
3.8/1.6
44
3.2/1.3
8001
650
47
3.8/1.6
46
3.4/1.4
46
3.5/1.5
46
3.7/1.5
46
3.8/1.6
675
47
3.5/1.4
47
3.6/1.5
47
3.7/1.5
47
3.8/1.6
46
3.5/1.4
) 'b
to
700
48
3.7/1.5
48
3.8/1.6
47
3.5/1.4
47
3.6/1.5
47
3.7/1.5
725
48
3.4/1.4
48
3.6/1.5
48
3.7/1.5
48
3.8/1.6
47
3.4/1.4
9000
750
49
3.8/1.6
48
3.3/1.4
48
3.4/1.4
48
3.5/1.5
48
3.7/1.5
775
49
3.5/1.5
49
3.7/1.5
49
3.8/1.6
48
3.3/1.4
48
3.4/1.4
800
49
3.3/1.4
49
3.4/1.4
49
3.5/1.5
49
3.7/1.5
49
3.8/1.6
ALTITUDE
AVG GAS
SPECIFIC GRAVITY OF NATURAL GAS
0.58
0.60
0.62
0.64
0.66
RANGE
(FT)
HEAT VALUE
T ALTITUDE
A AT ALTITUDE
(BTU/CU FT )
Orifice
Manifold
Pressure
Orifice
Manifold
Pressure
Orifice
Manifold
Pressure
Orifice
Manifold
Pressure
Orifice
Manifold
Pressure
No.
High /Low
No
High /Low
No
High /Low
No
High /Low
No
High /Low
AIuo - Y s'n
575
46
3.6/1.5
46
3.7/1.5
46
3.8/1.6
45
3.8/1.6
44
3.2/1.3
600
47
3.7/1.5
46
3.4/1.4
46
3.5/1.5
46
3.6/1.5
46
3.8/1.6
9001
625
47
3.4/1.4
47
3.6/1.5
47
3.7/1.5
47
3.8/1.6
46
3.5/1.4
650
48
3.6/1.5
48
3.8/1.6
47
3.4/1.4
47
3.5/1.5
47
3.6/1.5
to
675
48
3.4/1.4
48
3.5/1.4
48
3.6/1.5
48
3.7/1.5
48
3.8/1.6
700
49
3.7/1.5
49
3.8/1.6
48
3.3/1.4
48
3.5/1.4
48
3.6/1.5
10,000
725
49
3.4/1.4
49
3.5/1.5
49
3.7/1.5
49
3.8/1.6
48
3.3/1.4
750
50
3.8/1.6
49
3.3/1.4
49
3.4/1.4
49
3.5/1.5
49
3.6/1.5
775
50
3.5/1.5
50
3.7/1.5
50
3.8/1.6
49
3.3/1.4
49
3.4/1.4
'
TABLE 10 —MODEL 331AAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT Continued
(TABULATED DATA BASED ON 21,000 BTUH HIGH HEAT /13,500 BTUH LOW HEAT PER BURNER,
DERATED 4% FOR EACH 1000 FT ABOVE SEA LEVEL)*
• For 060125 size only, input Is 20,500 Btuh for high fire. Deduct 0.1 -in. from manifold pressure shown in table. Change orifice size if manifold pressure falls below 3.2 -in
wc.
_ 7 1 —
U
u)
W
�
Z H
I— O
Z 1-
W
U co
ON
I—
W W
u_ Z
Li
O
Z
SECONDS
FOR 1
REVOLUTION
SIZE OF TEST DIAL
SECONDS
FOR 1
REVOLUTION
SIZE OF TEST DIAL
1
cu ft
2
cu ft
5
cu ft
1
cu ft
2
cu ft
5
cu ft
10
360
720
1800
50
72
144
360
11
327
655
1636
51
71
141
355
12
300
600
1500
52
69
138
346
13
277
555
1385
53
68
136
340
14
257
514
1286
54
67
133
333
15
240
480
1200
55
65
131
327
16
225
450
1125
56
64
129
321
17
212
424
1059
57
63
126
316
18
200
400
1000
58
62
124
310
19
189
379
947
59
61
122
305
20
180
360
900
60
60
120
300
21
171
343
857
62
58
116
290
22
164
327
818
64
56
112
281
23
157
313
783
66
54
109
273
24
150
300
750
68
53
106
265
25
144
288
720
70
51
103
257
26
138
277
692
72
50
100
250
27
133
267
667
74
48
97
243
28
129
257
643
76
47
95
237
29
124
248
621
78
46
92
231
30
120
240
600
80
45
90
225
31
116
232
581
82
44
88
220
32
113
225
563
84
43
86
214
33
109
218
545
86
42
84
209
34
106
212
529
88
41
82
205
35
103
206
514
90
40
80
200
36
100
200
500
92
39
78
196
37
97
195
486
94
38
76
192
38
95
189
474
96
38
75
188
39
92
185
462
98
37
74
184
40
0 CD CD Q N
CO CO CO CO CO
180
450
100
36
72
180
41
176
439
102
35
71
178
42
172
429
104
35
69
173
43
167
419
106
34
68
170
44
164
409
108
33
67
167
45
80
160
400
110
33
65
164
46
78
157
391
112
32
64
161
47
76
153
383
116
31
62
155
48
49
75
73
150
147
375
367
120
30
60
150
iiatt
TABLE 11—GAS RATE (CU FT /HR)
g. Let furnace run for 3 minutes in low -heat operation.
h. Measure time (in sec) for gas meter to complete I
revolution. Note reading.
i. Refer to Table I1 for cubic ft of gas per hr.
j. Multiply gas rate cu ft/hr by heating value (Btu/cu ft).
k. Move setup switch SW -2 to OFF position and jumper R
and W2 thermostat connections. (See Fig. 17.) This
keeps furnace locked in high -heat operation. Repeat
items h through k for high -heat operation.
EXAMPLE: (High -heat operation at 0 -2000 ft altitude)
Furnace input from rating plate is 85,000 Btuh
Btu heating input = Btu/cu ft X cu ft/hr
Heating value of gas = 1050 Btu/cu ft
Time for I revolution of 2 -cu it dial = 90 sec
Gas rate = 80 cu ft/hr (from Table I I)
Btu heating input = 80 X 1050 = 84,000 Btuh In this
example, the orifice size and manifold pressure adjustment
is within ±2 percent of the furnace input rate.
NOTE: Measured gas inputs (high heat and low heat) must be
within ±2 percent of that stated on furnace rating plate when
installed at sea level or derated per that stated above when installed
at higher altitudes.
I. Remove jumper across R, W/W1, and W2 thermostat
connections to terminate call for heat.
2. Set temperature rise.
Place SW -2 in ON position. Jumper R to W/W1 and W2 to
check high -gas -heat temperature rise. To check low-gas-
-22—
heat temperature rise, remove jumper to W2. Determine air
temperature rise for both high and low heat using the
following steps. DO NOT exceed temperature rise ranges
specified on unit rating plate for high and low heat.
a. Place duct thermometers in return and supply ducts as
near furnace as possible. Be sure thermometers do not
see heat exchangers so that radiant heat will not affect
thermometer readings. This is particularly important
with straight -run ducts.
INLET
PRESSURE
TAP
ON /OFF
SWITCH
MANIFOLD
PRESSURE
TAP
A97358
Fig. 19— Redundant Automatic Gas Control Valve
BURNER FLAME —\
i,•
LOW -FIRE
ADJUSTMENT
ALLEN SCREW
(UNDER CAP)
HIGH -FIRE
ADJUSTMENT
ALLEN SCREW
i.- (UNDER CAP)
BURNER
MANIFOLD
Fig. 20 Burner Flame
b. When thermometer readings stabilize, subtract return -air
temperature from supply -air temperature to determine
temperature rise.
NOTE: If temperature rise is outside this range, first check:
(l.) Gas input for low- and high -heat operation.
(2.) Derate for altitude if applicable.
(3.) Return and supply ducts for excessive restrictions
causing static pressures greater than 0.50 -in. wc.
c. Adjust air temperature rise by adjusting blower speed.
Increase blower speed to reduce temperature rise. De-
crease blower speed to increase temperature rise. For
A89020
MO21615
COLOR
SPEED
AS SHIPPED
White
Common
CoM
Black
High
Cool
Oranget
Med
Capped
Yellow
Med -High
Park
Blue
Med -Low
High Gas - Heat
Red
Low*
Low- Gas -Heat
high heat, speed selection can be med -high, med (5-
speed blowers only), or med -low (factory setting). For
low heat, speed tap selection can be low (factory setting),
med -low, or tned (5 -speed blowers only).
WARNING: Disconnect electrical power before chang-
ing speed tap (or removing cap on 5 -speed motors). A
failure to follow this warning can cause personal injury or
death.
NOTE: For furnaces with 5 -speed motors, ensure that unused
speed tap is capped before power is restored.
d. To change motor speed selection for high heat, remove
blower motor lead from control HIGH- GAS -HEAT
terminal. (See Fig. 14 and Fig. I8.) Select desired blower
motor speed lead from I of the other terminals and
relocate it to HIGH- GAS -HEAT terminal. See Table 12
for lead color identification. Reconnect original lead to
PARK terminal (or cover with insulating cap, applies
only to furnaces with 5 -speed blower motors). Follow
this same procedure for proper selection of cool and
low -gas -heat speed selection.
TABLE 12 —SPEED SELECTION
• Cont nuous fan speed.
t Available on 5 -speed blowers only.
CAUTION: Recheck temperature rise. It must be within
limits specified on unit rating plate. Recommended op-
eration is at midpoint of rise range or above.
3. Set thermostat heat anticipator.
a. When using a nonelectronic thermostat, the thermostat
heat anticipation must be set to match amp draw of
electrical components in R -W /W I circuit. Accurate amp
draw readings can be obtained at wires normally con-
nected to thermostat subbase terminals R and W/W I.
Fig. 21 illustrates an easy method of obtaining actual
amp draw. The amp reading should be taken after blower
motor has started and furnace is operating in low heat.
To operate furnace in low heat, first move SW -2 to ON
position, THEN connect ammeter wires as shown in Fig.
21. The thermostat anticipator should NOT be in this
circuit while measuring current. If thermostat has no
subbase, thermostat MUST be disconnected from R and
W/W I wires during current measurement. Return SW -2
to final desired location after completing reading. See
thermostat manufacturer's instructions for adjusting heat
anticipator and for varying heating cycle length.
b. When using an electronic thermostat, set cycle rate for 3
cycles per hr.
E. Check Safety Controls
The flame sensor, gas valve, and pressure switches were all
checked in the Start -Up section as part of normal operation.
I. Check primary limit control.
This control shuts off combustion control system and
energizes circulating -air blower motor if furnace overheats.
—23—
THERMOSTAT SUBBASE
TERMINALS WITH
THERMOSTAT REMOVED
(ANITICIPATOR, CLOCK, ETC.,
MUST BE OUT OF CIRCUIT.)
HOOK- AROUND
AMMETER
10 TURNS
FROM UNIT 24 -V
CONTROL TERMINALS
EXAMPLE: 5.0 AMPS ON AMMETER _ 0.5 AMPS FOR THERMOSTAT
10 TURNS AROUND JAWS ANTICIPATOR SETTING
A96316
Fig. 21 —Amp Draw Check With Ammeter
The preferred method of checking limit control is to
gradually block off return air after furnace has been
operating for a period of at least 5 minutes. As soon as limit
has shut off burners, return -air opening should be un-
blocked. By using this method to check limit control, it can
be established that the limit is functioning properly and will
operate if there is a motor failure.
2. Check draft safeguard switch.
The purpose of this control is to permit safe shutdown of he
furnace during certain blocked vent conditions.
a. Disconnect power to furnace and remove vent connector
from furnace flue collar. Be sure to allow time for vent
connector pipe to cool down before removing.
b. Restore power to furnace and set room thermostat above
room temperature.
c. After normal start -up, allow furnace to operate for 2
minutes, then block flue outlet 100 percent. Furnace
should cycle off within 2 minutes.
d. Remove blockage and reconnect vent connector to
furnace flue collar.
e. Wait 5 minutes and then reset draft safeguard switch.
3. Check flow- sensing pressure switches.
This control proves operation of draft inducer blower.
a. Turn off 115 -v power to furnace.
b. Remove gas control door and disconnect inducer motor
lead wires from wire harness.
c. Turn on 115-v power to furnace
d. Close thermostat switch as if making normal furnace
start. If hot surface ignitor does not glow within several
minutes and control flashes code 32, pressure switches
are functioning properly.
e. Turn off 115-v power to furnace.
f. Reconnect inducer motor wires, replace gas control door,
and turn on 115 -v power to furnace.
4. Check auxiliary limits.
a. Turn off 115-v power to furnace.
MO-MS
b. Remove blower access door.
c. Disconnect red motor lead at blower speed selector.
Mark terminal for proper reconnection.
d. Replace blower access door.
e. Turn on 115 -v power to furnace. Be sure room thermo-
stat is calling for low heat.
f. Allow furnace to operate until auxiliary limit activates,
but DO NOT operate furnace longer than 4 minutes.
g. If furnace operates for 4 minutes, check /replace limit
switch(es).
h. Turn off 115-v power to furnace.
i. Remove blower access door.
j. Reconnect red motor lead, reset switch, and replace door.
k. Turn on 115 -v power to furnace.
O 2000 Bryant Heating & Cooling Systems 7310 W. Morris SI. Indianapolis, IN 46231
—24—
F. Checklist
I. Put away tools and instruments, and clean up debris.
2. Check SW -1 through SW -4 after completing installation to
ensure desired settings for thermostat type (SW -1 and
SW -2) and blower off delay (SW -3 and SW -4). Refer to
Tables 7 and 8.
3. Verify manual reset switches have continuity.
4. Ensure blower and gas control access doors are properly
installed.
5. Cycle test furnace with room thermostat.
6. Check operation of accessories per manufacturer's instruc-
tions.
7. Review User's Manual with owner.
8. Leave literature packet near furnace.
Printed In U.S.A. 331a637 Catalog No. 5333.104
M oa I'4S