Amana GCI Instruction manual

GUI*/GCI*
GAS-FIRED WARM AIR FURNACE
INSTALLATION INSTRUCTIONS
Installer: Affix all manuals adjacent to the unit.
These furnaces comply with requirements embodied in the American National Standard / National Standard of Canada ANSI Z21.47·CSA-2.3 Gas
Fired Central Furnaces.
DE SI GN
CE
R TI F IE D
C E RT I F I E D
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.
ATTENTION INSTALLING PERSONNEL
As a professional installer you have an obligation to know the product better than the customer. This includes all safety
precautions and related items.
Prior to actual installation, thoroughly familiarize yourself with this Instruction Manual. Pay special attention to all safety
warnings. Often during installation or repair it is possible to place yourself in a position which is more hazardous than
when the unit is in operation.
Remember, it is your responsibility to install the product safely and to know it well enough to be able to instruct a customer
in its safe use.
Safety is a matter of common sense...a matter of thinking before acting. Most dealers have a list of specific good safety
practices...follow them.
The precautions listed in this Installation Manual are intended as supplemental to existing practices. However, if there is
a direct conflict between existing practices and the content of this manual, the precautions listed here take precedence.
is a trademark of Maytag Corporation and is used under
license to Goodman Company, L.P. All rights reserved.
®
Part No. 10759835 Rev. 1
Printed in USA
Goodman Company, L.P.
1810 Wilson Parkway • Fayetteville, Tennessee 37334
www.amana-hac.com
2004 Goodman Company, L.P.
Effective: March 2004
Table of Contents
TO THE OWNER ................................................................................................................................................ 4
TO THE INSTALLER ............................................................................................................................................. 4
TRANSPORTATION DAMAGE .................................................................................................................................. 4
I. Component Identification ............................................................................................................................................... 5
II. Safety............................................................................................................................................................................... 6
ADDITIONAL SAFETY CONSIDERATIONS ................................................................................................................... 6
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS .................................................................................................. 6
III. Product Application ...................................................................................................................................................... 6
IV. Location Requirements and Considerations .............................................................................................................. 7
GENERAL ......................................................................................................................................................... 7
CLEARANCES AND ACCESSIBILITY ......................................................................................................................... 7
FURNACE SUSPENSION ........................................................................................................................................ 8
EXISTING FURNACE REMOVAL .............................................................................................................................. 8
THERMOSTAT LOCATION ...................................................................................................................................... 8
V. Combustion and Ventilation Air Requirements ........................................................................................................... 8
VI. Category I Venting (Vertical Venting) ......................................................................................................................... 10
VII. Masonry Chimneys .................................................................................................................................................... 12
CHECKLIST SUMMARY ....................................................................................................................................... 12
CHECK 1 - PROPER CHIMNEY TERMINATION. ......................................................................................................... 13
CHECK 2 - ANY SOLID OR LIQUID FUEL APPLIANCES VENTED INTO THIS CHIMNEY CHANNEL ............................................. 13
CHECK 3 - CHIMNEY CROWN CONDITION. ............................................................................................................ 14
CHECK 4 - DEBRIS IN CLEANOUT ....................................................................................................................... 14
CHECK 5 - LINER CONDITION. ............................................................................................................................ 14
CHECK 6 - DILUTION AIR. ................................................................................................................................. 14
CHECK 7 - COMPLETE THE INSTALLATION. ............................................................................................................ 14
FIX 1 - LINER TERMINATION. .............................................................................................................................. 14
FIX 2 -CHANGE VENTING ARRANGEMENTS ............................................................................................................. 15
FIX 3 - REBUILD THE CROWN. ............................................................................................................................ 15
FIX 4 - RELINING. ............................................................................................................................................ 15
VIII. Electrical Connections ............................................................................................................................................. 15
WIRING HARNESS ............................................................................................................................................ 15
115 VOLT LINE CONNECTIONS ........................................................................................................................... 16
24 VOLT THERMOSTAT WIRING .......................................................................................................................... 17
115 VOLT LINE CONNECTION OF ACCESSORIES (HUMIDIFIER AND ELECTRONIC AIR CLEANER) .................................... 17
IX. Gas Supply and Piping ............................................................................................................................................... 17
GENERAL ....................................................................................................................................................... 17
GAS PIPING CONNECTIONS ................................................................................................................................ 18
GAS PIPING CHECKS ........................................................................................................................................ 20
PROPANE GAS TANKS AND PIPING ...................................................................................................................... 20
X. Circulating Air and Filters ........................................................................................................................................... 20
DUCTWORK - AIR FLOW .................................................................................................................................... 20
FILTERS - READ THIS SECTION BEFORE INSTALLING THE RETURN AIR DUCTWORK .................................................... 21
UPRIGHT INSTALLATIONS ................................................................................................................................... 21
HORIZONTAL INSTALLATIONS ............................................................................................................................... 21
XI. Sequence of Operation (Integrated Ignition Control) .............................................................................................. 21
NORMAL HEATING SEQUENCE ............................................................................................................................ 21
NORMAL COOLING SEQUENCE - INTEGRATED IGNITION CONTROL ............................................................................. 21
CONSTANT FAN ............................................................................................................................................... 21
2
Table of Contents
XII. Start-up Procedure and Adjustment ......................................................................................................................... 22
HEAT ANTICIPATOR SETTING .............................................................................................................................. 22
FURNACE OPERATION ........................................................................................................................................ 22
FURNACE START-UP ......................................................................................................................................... 22
FURNACE SHUTDOWN ....................................................................................................................................... 22
GAS SUPPLY PRESSURE MEASUREMENT .............................................................................................................. 22
GAS MANIFOLD PRESSURE MEASUREMENT AND ADJUSTMENT ................................................................................. 23
GAS INPUT RATE MEASUREMENT (NATURAL GAS ONLY) ........................................................................................ 23
TEMPERATURE RISE ......................................................................................................................................... 23
CIRCULATOR BLOWER SPEED ADJUSTMENT ......................................................................................................... 24
PROPANE GAS PIPING CHARTS .......................................................................................................................... 24
CIRCULATOR BLOWER FAN TIMING ADJUSTMENT .................................................................................................. 24
XIII. Operational Checks .................................................................................................................................................. 25
BURNER FLAME ............................................................................................................................................... 25
AUXILIARY LIMIT CONTROL ................................................................................................................................ 25
PRIMARY LIMIT ................................................................................................................................................ 25
XIV. Safety Circuit Description ........................................................................................................................................ 26
GENERAL ....................................................................................................................................................... 26
INTEGRATED CONTROL MODULE ......................................................................................................................... 26
PRIMARY LIMIT ................................................................................................................................................ 26
AUXILIARY LIMIT .............................................................................................................................................. 26
ROLLOUT LIMITS .............................................................................................................................................. 26
PRESSURE SWITCHES ....................................................................................................................................... 26
FLAME SENSOR ............................................................................................................................................... 26
XV. Troubleshooting ......................................................................................................................................................... 26
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ................................................................................................ 26
DIAGNOSTIC CHART ......................................................................................................................................... 26
RESETTING FROM LOCKOUT .............................................................................................................................. 26
XVI. Maintenance .............................................................................................................................................................. 26
ANNUAL INSPECTION ......................................................................................................................................... 26
FILTERS .......................................................................................................................................................... 28
INDUCED DRAFT AND CIRCULATOR BLOWER MOTORS ............................................................................................ 29
FLAME SENSOR (QUALIFIED SERVICER ONLY) ...................................................................................................... 29
IGNITER (QUALIFIED SERVICER ONLY) ................................................................................................................. 29
FLUE PASSAGES (QUALIFIED SERVICER ONLY) ..................................................................................................... 29
BURNERS ....................................................................................................................................................... 29
XVII. Before Leaving an Installation ................................................................................................................................ 29
XVIII. Repair and Replacement Parts .............................................................................................................................. 29
Troubleshooting Chart ..................................................................................................................................................... 31
GCID Wiring Diagram ....................................................................................................................................................... 33
GUID/GUIE Wiring Diagram ............................................................................................................................................. 34
Minimum Filter Area (in2) ................................................................................................................................................. 35
3
TO THE OWNER
WARNING
It is important that you fill out the owner’s registration card and mail
it today. This will assist us in contacting you should any service or
warranty information change in the future. When filling in the registration card, be sure to include the model, manufacturing, and serial numbers, plus the installation date.
Your warranty certificate is also supplied with the unit. Read the
warranty carefully and note what is covered. Keep the warranty
certificate in a safe location for future reference.
If additional information or operating instructions are required, contact the dealer where the purchase was made.
Homeowner Notice:
IF THE INFORMATION IN THESE INSTRUCTIONS IS NOT FOLLOWED EXACTLY, A
FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL
INJURY OR LOSS OF LIFE.
–
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND
LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE.
–
WHAT TO DO IF YOU SMELL GAS:
• DO NOT TRY TO LIGHT ANY APPLIANCE.
• DO NOT TOUCH ANY ELECTRICAL SWITCH; DO NOT USE ANY
If the residence is left unattended for an extended period of
time (i.e., 4 hours or greater), have your heating system
periodically checked to ensure proper operation. Potential
circumstances beyond our control such as power outages,
gas service interruptions, product installation, or component
failures could result in heating system operational problems.
PHONE IN YOUR BUILDING.
• IMMEDIATELY CALL YOUR GAS SUPPLIER FROM A NEIGHBOR’S
PHONE.
FOLLOW THE GAS SUPPLIER’S INSTRUCTIONS.
• IF YOU CANNOT REACH YOUR GAS SUPPLIER, CALL THE FIRE
DEPARTMENT.
– INSTALLATION AND SERVICE MUST BE PERFORMED BY A QUALIFIED INSTALLER,
SERVICE AGENCY OR THE GAS SUPPLIER.
TO THE INSTALLER
WARNING
Before installing this unit, please read this manual thoroughly to
familiarize yourself with specific items which must be adhered to,
including but not limited to: unit maximum external static pressure,
gas pressures, BTU input rating, proper electrical connections, circulating air temperature rise, minimum or maximum CFM, and motor
speed connections, and venting. These furnaces are designed for
Category I venting only.
SHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL TO SHUT OFF, TURN
OFF THE MANUAL GAS SHUTOFF VALVE EXTERNAL TO THE FURNACE BEFORE
TURNING OFF THE ELECTRICAL SUPPLY.
WARNING
TO PREVENT POSSIBLE PERSONAL INJURY OR DEATH DUE TO ASPHYXIATION,
THIS FURNACE MUST BE CATEGORY I VENTED. DO NOT VENT USING
CATEGORY III VENTING.
TRANSPORTATION DAMAGE
All units are securely packed in shipping containers tested according to International Safe Transit Association specifications. The
carton must be checked upon arrival for external damage. If damage is found, a request for inspection by carrier’s agent must be
made in writing immediately.
The furnace must be carefully inspected on arrival for damage and
bolts or screws which may have come loose in transit. In the event
of damage the consignee should:
1. Make a notation on delivery receipt of any visible damage to
shipment or container.
2. Notify carrier promptly and request an inspection.
3. With concealed damage, carrier must be notified as soon as
possible - preferably within five days.
4. File the claim with the following support documents within a
nine month statute of limitations.
CARBON MONOXIDE POISONING HAZARD
Special Warning for Installation of Furnace or Air Handling Units in
Enclosed Areas such as Garages, Utility Rooms or Parking Areas
Carbon monoxide producing devices (such as an automobile, space
heater, gas water heater, etc.) should not be operated in enclosed areas
such as unventilated garages, utility rooms or parking areas because of
the danger of carbon monoxide (CO) poisoning resulting from the exhaust
emissions. If a furnace or air handler is installed in an enclosed area such
as a garage, utility room or parking area and a carbon monoxide producing
device is operated therein, there must be adequate, direct outside
ventilation.
This ventilation is necessary to avoid the danger of CO poisoning which
can occur if a carbon monoxide producing device continues to operate in
the enclosed area. Carbon monoxide emissions can be (re)circulated
throughout the structure if the furnace or air handler is operating in any
mode.
CO can cause serious illness including permanent brain damage or death.
B10259-216
•
Original or certified copy of the Bill of Lading, or indemnity
bond.
•
•
Original paid freight bill or indemnity in lieu thereof.
Original or certified copy of the invoice, showing trade and
other discounts or reductions.
•
Copy of the inspection report issued by carrier’s
representative at the time damage is reported to carrier.
The carrier is responsible for making prompt inspection of damage
and for a thorough investigation of each claim. The distributor or
manufacturer will not accept claims from dealers for transportation
damage.
Keep this literature in a safe place for future reference.
4
I. CO
MPO
NENT ID
ENTIFI
C ATI
ON
COMPO
MPONENT
IDENTIFI
ENTIFIC
TIO
19
18
17
8
22
1
C
7
2
ON
13
6
3
5
OFF
ON
22
20
6
BLOWER
HARNESS
Y W R
17
5
4
1
2
OFF
1
2
14
W R G
15
Y
BURNER COMPARTMENT
12
19
14
1
21
16
21
G C
7
12
8
10
2
13
9
15
Upflow (GUI* Models)
3
Counterflow (GCI* Models)
Single Stage Gas Valve
Hot Surface Igniter
Burners
Gas Manifold
Blower Door Interlock Switch
Capacitor
PSC Multi-speed Circulator Blower
Single-Stage Integrated Control Module
(with diagnostic LED)
Control Mounting Bracket
Transformer (40 VA)
24 Volt Thermostat Connections
Auxiliary Limit
Flame Sensor
14
15
16
17
18
19
20
21
22
5
Gas Line Entrance
Rollout Limit
Electrical Connection Inlets (Alternate)
Single-Speed Induced Draft Blower
Flue Pipe Connection
Pressure Switch
Junction Box
Electrical Connection Inlets
Primary Limit Control
4
BURNER COMPARTMENT
BLOWER COMPARTMENT
9
21
16
11
9
10
11
12
13
18
BLOWER COMPARTMENT
20
1
2
3
4
5
6
7
8
11
10
II. SAFET
Y
SAFETY
Adhere to the following warnings and cautions when installing, adjusting, altering, servicing, or operating the furnace.
2. Firmly touch a clean, unpainted, metal surface of the
furnaces near the control. Any tools held in a person’s
hand during grounding will be discharged.
3. Service integrated control module or connecting wiring
following the discharge process in step 2. Use caution not
to recharge your body with static electricity; (i.e., do not
move or shuffle your feet, do not touch ungrounded objects,
etc.). If you come in contact with an ungrounded object,
repeat step 2 before touching control or wires.
4. Discharge your body to ground before removing a new
control from its container. Follow steps 1 through 3 if
installing the control on a furnace. Return any old or new
controls to their containers before touching any ungrounded
object.
WARNING
TO PREVENT PERSONAL INJURY OR DEATH DUE TO IMPROPER INSTALLATION,
ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE, REFER TO THIS
MANUAL.
1. Disconnect all power to the furnace. Do not touch the
integrated control module or any wire connected to the
control prior to discharging your body’s electrostatic charge
to ground.
FOR ADDITIONAL ASSISTANCE OR INFORMATION, CONSULT A
QUALIFIED INSTALLER, SERVICE AGENCY OR THE GAS SUPPLIER.
WARNING
THIS PRODUCT CONTAINS OR PRODUCES A CHEMICAL OR CHEMICALS WHICH
MAY CAUSE SERIOUS ILLNESS OR DEATH AND WHICH ARE KNOWN TO THE
STATE OF CALIFORNIA TO CAUSE CANCER, BIRTH DEFECTS OR OTHER
REPRODUCTIVE HARM.
III. PR
ODUC
T APPLI
CATI
ON
PRO
DUCT
APPLIC
TIO
WARNING
TO PREVENT POSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH
DUE TO ELECTRICAL SHOCK, THE FURNACE MUST BE LOCATED TO PROTECT
THE ELECTRICAL COMPONENTS FROM WATER.
WARNING
THIS UNIT MUST NOT BE USED AS A "CONSTRUCTION HEATER" DURING THE
THIS TYPE OF
FINISHING PHASES OF CONSTRUCTION ON A NEW STRUCTURE.
USE MAY RESULT IN PREMATURE FAILURE OF THE UNIT DUE TO EXTREMELY
LOW RETURN AIR TERMPERATURES AND EXPOSURE TO CORROSIVE OR VERY
DIRTY ATMOSPHERES.
WARNING
HEATING UNIT SHOULD NOT BE UTILIZED WITHOUT REASONABLE, ROUTINE,
INSPECTION, MAINTENANCE AND SUPERVISION. IF THE BUILIDNG IN WHICH ANY
SUCH DEVICE IS LOCATED WILL BE VACANT, CARE SHOULD BE TAKEN THAT
SUCH DEVICE IS ROUTINELY INSPECTED, MAINTAINED AND MONITORED. IN THE
EVENT THAT THE BUILDING MAYBE EXPOSED TO FREEZING TEMPERATURES
AND WILL BE VACANT, ALL WATER-BEARING PIPES SHOULD BE DRAINED, THE
BUILDING SHOULD BE PROPERLY WINTERIZED, AND THE WATER SOURCE
CLOSED. IN THE EVENT THAT THE BUILDING MAY BE EXPOSED TO FREEZING
This furnace is primarily designed for residential home-heating
applications. It is NOT designed or certified for use in mobile homes,
trailers or recreational vehicles. Neither is it designed or certified
for outdoor applications. The furnace must be installed indoors
(i.e., attic space, crawl space, or garage area provided the garage
area is enclosed with an operating door).
This furnace can be used in the following non-industrial commercial applications:
Schools, Office buildings, Churches, Retail stores,
Nursing homes, Hotels/motels, Common or office areas
In such applications , the furnace must be installed with the following stipulations:
•
It must be installed per the installation instructions
provided and per local and national codes.
•
It must be installed indoors in a building constructed on
site.
•
It must be part of a ducted system and not used in a free
air delivery application.
•
It must not be used as a “make-up” air unit.
•
All other warranty exclusions and restrictions apply.
To ensure proper installation and operation, thoroughly read this
manual for specifics pertaining to the installation and application
of this product.
TEMPERATURES AND WILL BE VACANT, ANY HYDRONIC COIL UNITS SHOULD
WARNING
BE DRAINED AS WELL AND, IN SUCH CASE, ALTERNATIVE HEAT SOURCES
SHOULD BE UTILIZED.
POSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO FIRE,
ADDITIONAL SAFETY CONSIDERATIONS
•
This furnace is approved for Category I Venting only.
•
Provisions must be made for venting combustion products
outdoors through a proper venting system. The length of flue
pipe could be a limiting factor in locating the furnace.
EXPLOSION, SMOKE, SOOT, CONDENSTAION, ELECTRICAL SHOCK OR CARBON
MONOXIDE MAY RESULT FROM IMPROPER INSTALLATION, REPAIR, OPERATION,
OR MAINTENANCE OF THIS PRODUCT.
WARNING
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
TO PREVENT PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO FIRE,
DO NOT INSTALL THIS FURNACE IN A MOBILE HOME, TRAILER, OR RECREATIONAL
NOTE: Discharge body’s static electricity before touching unit. An
electrostatic discharge can adversely affect electrical components.
Use the following precautions during furnace installation and servicing to protect the integrated control module from damage. By putting the furnace, the control, and the person at the same electrostatic potential, these steps will help avoid exposing the integrated
control module to electrostatic discharge. This procedure is applicable to both installed and non-installed (ungrounded) furnaces.
6
VEHICLE.
To ensure proper furnace operation, install, operate and maintain
the furnace in accordance with these installation and operation
instructions, all local building codes and ordinances. In their absence, follow the latest edition of the National Fuel Gas Code
(NFPA 54/ANSI Z223.1), and/or CAN/CSA B149 Installation Codes,
local plumbing or waste water codes, and other applicable codes.
A copy of the National Fuel Gas Code (NFPA 54/ANSI Z223.1) can
be obtained from any of the following:
American National Standards Institute
1430 Broadway
New York, NY 10018
furnace where the combustion air is exposed to the
following substances:
chlorinated waxes or cleaners
chlorine-based swimming pool chemicals
water softening chemicals
National Fire Protection Association
1 Batterymarch Park
Quincy, MA 02269
deicing salts or chemicals
carbon tetrachloride
halogen type refrigerants
CSA International
8501 East Pleasant Valley
Cleveland, OH 44131
cleaning solutions (such as perchloroethylene)
printing inks
A copy of the CAN/CSA B149 Installation Codes can also be obtained from:
CSA International
178 Rexdale Boulevard
Etobicoke, Ontario, Canada M9W 1R3
The rated heating capacity of the furnace should be greater than or
equal to the total heat loss of the area to be heated. The total heat
loss should be calculated by an approved method or in accordance
with “ASHRAE Guide” or “Manual J-Load Calculations” published by
the Air Conditioning Contractors of America.
paint removers
varnishes
hydrochloric acid
cements and glues
antistatic fabric softeners for clothes dryers
and masonry acid washing materials
•
IV
ATI
ON REQUIREMENTS AND CO
NSID
ERA
TI
ONS
IV.. LOC
LOCA
TIO
CONSID
NSIDERA
ERATI
TIO
•
GENERAL
WARNING
•
POSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO FIRE,
EXPLOSION, SMOKE, SOOT, CONDENSTAION, ELECTRICAL SHOCK OR CARBON
MONOXIDE MAY RESULT FROM IMPROPER INSTALLATION, REPAIR, OPERATION,
OR MAINTENANCE OF THIS PRODUCT.
•
WARNING
•
TO PREVENT POSSIBLE EQUIPMENT DAMAGE, PROPERTY DAMAGE, PERSONAL
•
INJURY OR DEATH, THE FOLLOWING BULLET POINTS MUST BE OBSERVED
WHEN INSTALLING THE UNIT.
Follow the instructions listed below when selecting a furnace location. Refer also to the guidelines provided in Section V, Combustion
and Ventilation Air Requirements.
•
Centrally locate the furnace with respect to the proposed
or existing air distribution system.
•
Ensure the temperature of the return air entering the furnace
is between 55°F and 100°F when the furnace is heating.
•
Provisions must be made for venting combustion products
outdoors through a proper venting system. The length of
flue pipe could be a limiting factor in locating the furnace.
•
Ensure adequate combustion air is available for the furnace.
Improper or insufficient combustion air can expose building
occupants to gas combustion products that could include
carbon monoxide. Refer to Section V, Combustion and
Ventilation Air Requirements.
•
The furnace must be level. If the furnace is to be set on a
floor that may become wet or damp at times, the furnace
should be supported above the floor on a concrete base
sized approximately 1-1/2" larger than the base of the
furnace.
•
Ensure upflow or horizontal furnaces are not installed
directly on carpeting, or any other combustible material.
The only combustible material allowed is wood.
•
Exposure to contaminated combustion air will result in safety
and performance-related problems. Do not install the
•
If the furnace is used in connection with a cooling unit,
install the furnace upstream or in parallel with the cooling
unit coil. Premature heat exchanger failure will result if
the cooling unit coil is placed ahead of the furnace.
If the furnace is installed in a residential garage, position
the furnace so that the burners and ignition source are
located not less than 18 inches (457 mm) above the floor.
Protect the furnace from physical damage by vehicles.
If the furnace is installed horizontally, the furnace access
doors must be vertical so that the burners fire horizontally
into the heat exchanger. Do not install the unit with the
access doors on the “up/top” or “down/bottom” side of
the furnace.
Do not connect this furnace to a chimney flue that serves
a separate appliance designed to burn solid fuel.
On Counterflow Installations, the air conditioning coil must
be downstream from the heat exchanger of the furnace.
Counterflow Installation over a noncombustible floor.
Before setting the furnace over the plenum opening,
ensure the surface around the opening is smooth and
level. A tight seal should be made between the furnace
base and floor by using a silicone rubber caulking
compound or cement grout.
Counterflow Installation over a combustible floor. If
installation over a combustible floor becomes necessary,
use an accessory subbase (see Product Data Bulletin
for details). A special accessory subbase must be used
for upright counterflow unit installations over any
combustible material including wood. Refer to subbase
instructions for installation details. Follow the instructions
with the subbase for proper installation. Do not install the
furnace directly on carpeting, tile, or other combustible
material other than wood flooring. (Note: The subbase
will not be required if an air conditioning coil is installed
between the supply air opening on the furnace and the
floor.)
CLEARANCES AND ACCESSIBILITY
Installations must adhere to the clearances to combustible materials which this furnace has been design certified to.
The minimum clearance information for this furnace is provided on
the unit clearance label. These clearances must be permanently
maintained. Clearances must also accommodate an installation’s
7
gas, electrical, and drain trap and drain line connections. The combustion and ventilating air openings in the front and top panels of the
furnace must never be obstructed. Refer to the unit Product Data
Bulletin for minimum clearances to combustible surfaces.
FURNACE SUSPENSION
If suspending the furnace from rafters or joist, use 3/8" threaded rod
and 2”x2”x3/8” angle iron as shown below. The length of rod will
depend on the application and the clearances necessary.
PROVIDE 8" MINMUM CLEARANCE BETWEEN
CENTER ROD AND FURNACE CABINET
3/8" DIAMETER
ASSURE FURNACE IS LEVEL FROM
END TO END AND HAS A SLIGHT
(6 PLACES)
If resizing is required on any portion of the venting system,
use the appropriate table in Appendix G in the latest edition of
the National Fuel Gas Code ANSI Z223.1 and/or CAN/CSA
B149 Installation Codes.
THERMOSTAT LOCATION
In an area having good air circulation, locate the thermostat about
five feet high on a vibration-free inside wall. Do not install the
thermostat where it may be influenced by any of the following:
TO ALLOW FOR CIRCULATOR BLOWER REMOVAL
THREADED ROD
Corrections must be in accordance with the latest edition of
the National Fuel Gas Code NFPA 54/ANSI Z223.1 and/or
CAN/CSA B149 Installation Codes.
FORWARD TILT WITH THE FRONT
OF THE FURNACE 0"-3/4"
•
BELOW THE BACK OF THE FURNACE
HOLD DOWN
NUTS
•
•
•
•
•
•
SUPPORT
NUTS
2"x2"x3/8"
ANGLE IRON
(3 PLACES)
POSITION AS CLOSE AS POSSIBLE
TO BLOWER DECK TO ALLOW FOR
TILT OUTWARD TO ALLOW FOR
DOOR AND CIRCULATOR BLOWER
CIRCULATOR BLOWER REMVOAL
REMOVAL
Figure 1 - Suspended Furnace
Drafts, or dead spots behind doors, in corners, or under
cabinets.
Hot or cold air from registers.
Radiant heat from the sun.
Light fixtures or other appliances.
Radiant heat from a fireplace.
Concealed hot or cold water pipes, or chimneys.
Unconditioned areas behind the thermostat, such as an
outside wall.
EXISTING FURNACE REMOVAL
NOTE: When an existing furnace is removed from a venting system
serving other appliances, the venting system may be too large to
properly vent the remaining attached appliances.
The following vent testing procedure is reproduced from the American
National Standard/National Standard of Canada for Gas-Fired Central Furnaces ANSI Z21.47-1998, CSA-2.3-M98 Section 1.23.1.
The following steps shall be followed with each appliance connected to the
venting system placed in operation, while any other appliances connected to the venting system are not in operation:
DRAFTS OR DEAD SPOTS
-BEHIND DOORS
-IN CORNERS
-UNDER CABINETS
HOT
COLD
a. Seal any unused openings in the venting system;
Figure 2 - Thermostat Influences
b. Inspect the venting system for proper size and horizontal pitch, as
required by the National Fuel Gas Code, ANSI Z223.1 or the CAN/ Consult the instructions packaged with the thermostat for mountCSA B149 Installation Codes and these instructions. Determine that ing instructions and further precautions.
there is no blockage or restriction, leakage, corrosion and other deON AND VENTIL
ATI
ON AIR REQUIREMENTS
V. CO
MBUSTI
VENTILA
TIO
COMBUSTI
MBUSTIO
ficiencies which could cause an unsafe condition;
c. In so far as practical, close all building doors and windows and all
doors between the space in which the appliance(s) connected to the
venting system are located and other spaces of the building. Turn
on clothes dryers and any appliance not connected to the venting
system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they shall operate at maximum speed. Do not
operate a summer exhaust fan. Close fireplace dampers;
d. Follow the lighting instructions. Place the appliance being inspected
in operation. Adjust thermostat so appliance shall operate continuously;
WARNING
TO AVOID PROPERTY DAMAGE, PERSONAL INJURY OR DEATH, SUFFICIENT
FRESH AIR FOR PROPER COMBUSTION AND VENTILATION OF FLUE GASES MUST
BE SUPPLIED.
MOST HOMES REQUIRE OUTSIDE AIR BE SUPPLIED INTO THE
FURNACE AREA.
Improved construction and additional insulation in buildings have
reduced heat loss by reducing air infiltration and escape around
doors and windows. These changes have helped in reducing heate. Test for draft hood equipped appliance spillage at the draft hood ing/cooling costs but have created a problem supplying combusrelief opening after 5 minutes of main burner operation. Use the tion and ventilation air for gas fired and other fuel burning appliances. Appliances that pull air out of the house (clothes dryers,
flame of a match or candle;
exhaust fans, fireplaces, etc.) increase the problem by starving
f. After it has been determined that each appliance connected to the appliances for air.
venting system properly vents when tested as outlined above, re- House depressurization can cause back drafting or improper comturn doors, windows, exhaust fans, fireplace dampers and any other bustion of gas-fired appliances, thereby exposing building occugas burning appliance to their previous conditions of use;
pants to gas combustion products that could include carbon mong. If improper venting is observed during any of the above tests, the oxide.
If this furnace is to be installed in the same space with other gas
common venting system must be corrected.
appliances, such as a water heater, ensure there is an adequate
supply of combustion and ventilation air for the other appliances.
8
Refer to the latest edition of the National Fuel Gas Code NFPA 54/
ANSI Z223.1 (Section 5.3), or CAN/CSA B149 Installation Codes
(Sections 7.2, 7.3, or 7.4), or applicable provisions of the local
building codes for determining the combustion air requirements
for the appliances.
This furnace must use indoor air for combustion. It cannot be installed as a direct vent (i.e., sealed combustion) furnace.
Most homes will require outside air be supplied to the furnace area
by means of ventilation grilles or ducts connecting directly to the
outdoors or spaces open to the outdoors such as attics or crawl
spaces.
The following information on air for combustion and ventilation is reproduced from the National Fuel Gas Code NFPA 54/ANSI Z223.1 Section 5.3.
5.3.1 General:
5.3.3 Equipment Located in Confined Spaces:
(a) All Air from Inside the Building: The confined space shall be provided with two permanent openings communicating directly with
an additional room(s) of sufficient volume so that the combined
volume of all spaces meets the criteria for an unconfined space.
The total input of all gas utilization equipment installed in the
combined space shall be considered in making this determination. Each opening shall have a minimum free area of 1 square
inch per 1,000 BTU per hour of the total input rating of all gas
utilization equipment in the confined space, but not less than 100
square inches. One opening shall be within 12 inches of the top
and one within 12 inches of the bottom of the enclosure.
Chimney or Gas Vent
NOTE: Each opening must have
a free area of not less than one
square inch per 1000 BTU of
the total input rating of all equipment in the enclosure, but not
less than 100 square inches.
(a) The provisions of 5.3 apply to gas utilization equipment installed
in buildings and which require air for combustion, ventilation
and dilution of flue gases from within the building. They do not
apply to (1) direct vent equipment which is constructed and installed so that all air for combustion is obtained from the outside
atmosphere and all flue gases are discharged to the outside atmosphere, or (2) enclosed furnaces which incorporate an integral
total enclosure and use only outside air for combustion and dilution of flue gases.
Opening
Furnace
(b) Equipment shall be installed in a location in which the facilities
for ventilation permit satisfactory combustion of gas, proper venting and the maintenance of ambient temperature at safe limits
under normal conditions of use. Equipment shall be located so as
not to interfere with proper circulation of air. When normal infiltration does not provide the necessary air, outside air shall be
introduced.
Water
Heater
Opening
Equipment Located in Confined Spaces; All Air from Inside
Building. See 5.3.3-a.
(c) In addition to air needed for combustion, process air shall be provided as required for: cooling of equipment or material, controlling dew point, heating, drying, oxidation or dilution, safety exhaust, odor control, and air for compressors.
(b) All Air from Outdoors: The confined space shall be provided with
two permanent openings, one commencing within 12 inches of
the top and one commencing within 12 inches of the bottom of
the enclosure. The openings shall communicate directly, or by
ducts, with the outdoors or spaces (crawl or attic) that freely communicate with the outdoors.
(d) In addition to air needed for combustion, air shall be supplied for
ventilation, including all air required for comfort and proper working conditions for personnel.
1. When directly communicating with the outdoors, each opening shall have a minimum free area of 1 square inch per 4,000
BTU per hour of total input rating of all equipment in the
enclosure.
(e) While all forms of building construction cannot be covered in
detail, air for combustion, ventilation and dilution of flue gases
for gas utilization equipment vented by natural draft normally
may be obtained by application of one of the methods covered in
5.3.3 and 5.3.4.
Chimney or Gas Vent
Ventilation louvers
(each end of attic)
(f) Air requirements for the operation of exhaust fans, kitchen ventilation systems, clothes dryers, and fireplaces shall be considered
in determining the adequacy of a space to provide combustion air
requirements.
NOTE: The inlet and outlet air
openings must each have a free
area of not less than one square
inch per 4000 BTU of the
total input rating of all equipment
in the enclosure.
5.3.2 Equipment Located in Unconfined Spaces:
In unconfined spaces (see definition below) in buildings, infiltration may be adequate to provide air for combustion ventilation
and dilution of flue gases. However, in buildings of tight construction (for example, weather stripping, heavily insulated,
caulked, vapor barrier, etc.), additional air may need to be provided using the methods described in 5.3.3-b or 5.3.4.
Outlet Air
Furnace
Water
Heater
Inlet Air
Alternate
air inlet
Space, Unconfined.
Ventilation louvers for
unheated crawl space
For purposes of this Code, a space whose volume is not less
than 50 cubic feet per 1,000 BTU per hour of the aggregate input
rating of all appliances installed in that space. Rooms communicating directly with the space in which the appliances are installed
through openings not furnished with doors, are considered a part
of the unconfined space.
Equipment Located in Confined Spaces; All Air from Outdoors—
Inlet Air from Ventilated Crawl Space and Outlet Air to Ventilated
Attic. See 5.3.3-b
9
2. When communicating with the outdoors through vertical ducts,
each opening shall have a minimum free area of 1 square inch
per 4,000 BTU per hour of total input rating of all equipment
in the enclosure.
NOTE: The single opening must have
a free area of not less than one
square inch per 3000 BTU of
the total input rating of all equipment in the enclosure, but not less than
the sum of the areas of all vent
connectors in the confined space.
Chimney or Gas Vent
Chimney or Gas Vent
Ventilation louvers
(each end of attic)
NOTE: The inlet and outlet air
openings must each have a free
area of not less than one square
inch per 4000 BTU of the
total input rating of all equipment
in the enclosure.
Opening
Furnace
Water
Heater
Alternate
Opening
Location
Outlet Air
Furnace
Water
Heater
Inlet air duct
[ends 1 ft (300 mm)
above floor]
Equipment Located in Confined Spaces; All Air from Outdoors Single Air Opening. See 5.3.3-b.
5. One permanent opening may be permitted, provided the equipment has clearances of at least 1” from the sides and back and
6” from the front. The opening shall communicate directly with
the outdoors and must be located within 12” of the top of the
enclosure. The minimum free area of the opening shall be 1
square inch per 3,000 BTU per hour of total input rating of all
equipment in the enclosure. The minimum free area shall not
be less than the sum of the areas of all vent connectors in the
confined space.
Equipment Located in Confined Spaces; All Air from Outdoors
Through Ventilated Attic. See 5.3.3-b.
3. When communicating with the outdoors through horizontal
ducts, each opening shall have a minimum free area of 1 square
inch per 2,000 BTU per hour of total input rating of all equipment in the enclosure.
Chimney or Gas Vent
5.3.4 Specially Engineered Installations:
Outlet air duct
Furnace
The requirements of 5.3.3 shall not necessarily govern when special engineering, approved by the authority having jurisdiction, provides an adequate supply of air for combustion, ventilation, and
dilution of flue gases.
NOTE: The air duct openings
must have a free area of not
less than one square inch per
2000 BTU of the total input
rating of all equipment in the
enclosure*.
5.3.5 Louvers and Grilles:
In calculating free area in 5.3.3, consideration shall be given to the
blocking effect of louvers, grilles or screens protecting openings.
Screens used shall not be smaller than 1/4 inch mesh. If the area
through a design of louver or grille is known, it should be used in
calculating the size of opening required to provide the free area
specified. If the design and free area is not known, it may be assumed that wood louvers will have 20-25 percent free area and metal
louvers and grilles will have 60-75 percent free area. Louvers and
grilles shall be fixed in the open position or interlocked with the
equipment so that they are opened automatically during equipment
operation.
Water
Heater
Inlet air duct
*If the appliance room is located against an outside wall and the air openings communicate
directly with the outdoors, each opening shall have a free area of not less than one square inch
per 4,000 BTU per hour of the total input rating of all appliances in the enclosure.
Equipment Located in Confined Spaces; All Air from Outdoors. See
5.3.3-b.
5.3.6 Special Conditions Created by Mechanical Exhausting or Fireplaces:
Operation of exhaust fans, ventilation systems, clothes dryers, or
fireplaces may create conditions requiring special attention to avoid
unsatisfactory operation of installed gas utilization equipment.
4. When ducts are used, they shall be of the same cross-sectional
area as the free area of the openings to which they connect.
The minimum dimension of rectangular air ducts shall not be
less than 3 inches.
VI. CA
TEGO
RY I VENTIN
G ((VER
VER
TI
CAL VENTIN
G)
CATEGO
TEGOR
VENTING
VERTI
TIC
VENTING)
WARNING
TO PREVENT POSSIBLE PERSONAL INJURY OR DEATH DUE TO ASPHYXIATION,
THIS FURNACE MUST BE CATEGORY I VENTED. DO NOT VENT USING
CATEGORY III VENTING.
Category I Venting is venting at a non-positive pressure. A furnace
vented as Category I is considered a fan-assisted appliance and the
vent system does not have to be “gas tight.” NOTE: Single stage
gas furnaces with induced draft blowers draw products of combustion through a heat exchanger allowing, in some instances, common
venting with natural draft appliances (i.e. water heaters).
10
All installations must be vented in accordance with National Fuel
Gas Code NFPA 54/ANSI Z223.1 - latest edition. In Canada, the
furnaces must be vented in accordance with the National Standard of Canada, CAN/CSA B149.1 and CAN/CSA B149.2 - latest
editions and amendments.
NOTE: The vertical height of the Category I venting system must
be at least as great as the horizontal length of the venting system.
WARNING
TO PREVENT POSSIBLE PERSONAL INJURY OR DEATH DUE TO ASPHYXIATION,
COMMON VENTING WITH OTHER MANUFACTURER'S INDUCED DRAFT APPLIANCS
IS NOT ALLOWED.
Common venting with specific Category I 80% furnaces is allowed
with the addition of a common vent kit (CVK) for each appliance.
Contact the local installing dealer, distributor or us directly for more
information.
The minimum vent diameter for the Category I venting system is
as shown below:
Code NFPA 54/ANSI Z223.1.
When resizing any portion of the common venting system, use the
appropriate table in Appendix G in the latest edition of the National
Fuel Gas Code NFPA 54/ANSI Z223.1.
Upflow or Horizontal units are shipped with the induced draft
blower discharging from the top of the furnace. (“Top” is as viewed
for an upflow installation.) The induced draft blower can be rotated
90 degrees counterclockwise for Category I venting, with the airflow horizontal left to right (Figure 3). For horizontal installations, a
four inch single wall pipe can be used to extend the induced draft
blower outlet 1/2” beyond the furnace cabinet. Vent the furnace in
accordance with the National Fuel Gas Code NFPA 54/ANSI Z223.1
- latest edition. In Canada, vent the furnace in accordance with
the National Standard of Canada, CAN/CSA B149.1 and CAN/CSA
B149.2 - latest editions and amendments.
MINIMUM VENT DIAMETER
MODEL
GUI*
GCI*
45
3 Inch
4 Inch
70
4 Inch
4 Inch
90
4 Inch
4 Inch
115
5 Inch
5 Inch
140
5 Inch
5 Inch
Under some conditions, larger vents than those shown above may
be required or allowed.
When an existing furnace is removed from a venting system serving other appliances, the venting system may be too large to properly vent the remaining attached appliances.
The following steps shall be followed with each appliance remaining connected to the common venting system placed in operation,
while the other appliances remaining connected to the common
venting system are not in operation.
(a) Seal any unused openings in the common venting system.
(b) Visually inspect the venting system for proper size and
horizontal pitch as required in the National Fuel Gas Code
NFPA 54/ANSI Z223.1, or the CAN/CSA B149.1 and CAN/
CSA B149.2 Installation Codes and these instructions.
Determine there is no blockage or restriction, leakage,
corrosion or other deficiencies which could cause an unsafe
condition.
(c) Where practical, close all building doors, windows, and all
doors between the space where the appliances remain
connected to the common venting system are located and
other spaces of the building. Turn on all gas appliances not
connected to the common venting system and operate on
high speed all exhaust fans (range hoods and bathroom),
except summer exhaust fans. Close fireplace dampers.
(d) Following the lighting instructions, place the furnace being
inspected in operation. Adjust thermostat so appliance will
operate continuously.
(e) Test for spillage at the draft hood relief opening after 5
minutes of main burner operation. Use the flame of a match
or candle, or smoke from a cigarette, cigar, or pipe.
(f) After it has been determined that each appliance remaining
connected to the common venting system properly vents
when tested as outlined above, return doors, windows,
exhaust fans, fireplace dampers and any other gas-burning
appliance to their previous conditions of use.
(g) If improper venting is observed during any of the above tests,
the common venting system must be corrected in
accordance with the latest edition of the National Fuel Gas
Supply
Air
Figure 3 - Upflow Rotated Induced Draft Blower
Counterflow units are shipped with the induced draft blower discharging from the top of the furnace. (“Top” as viewed for a counterflow installation.) The induced draft blower can be rotated 90
degrees counterclockwise for Category I venting, with the airflow
horizontal right to left (Figure 4). For horizontal installations, a
three inch B-vent pipe can be used to extend the induced draft
blower outlet 1/2” beyond the furnace cabinet. Vent the furnace in
accordance with the National Fuel Gas Code NFPA 54/ANSI Z223.1
- latest edition. In Canada, vent the furnace in accordance with
the National Standard of Canada, CAN/CSA B149.1 AND CAN/
CSA B149.2 - latest editions and amendments.
Vent
Supply
Air
Return
Air
Figure 4 - Counterflow Rotated Induced Draft Blower
11
VII. MA
SO
NR
Y CHIMNE
YS
MASO
SONR
NRY
CHIMNEYS
To rotate the induced draft blower counterclockwise proceed as follows:
1. Disconnect electrical power from furnace.
WARNING
POSSIBILITY OF PROPERTY DAMAGE, PERSONAL INJURY OR DEATH
WARNING
DAMAGING CONDENSATION CAN OCCUR INSIDE MASONRY CHIMNEYS WHEN A
SINGLE FAN ASSISTED
CATEGORY I APPLIANCE (80% AFUE FURNACE) IS
DO NOT CONNECT AN 80%
TO AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRIC SHOCK,
VENTED WITHOUT ADEQUATE DILUTION AIR.
DISCONNECT ELECTRICAL POWER BEFORE PERFORMING ANY SERVICE OR
FURNACE TO A MASONRY CHIMNEY UNLESS THE FURNACE IS COMMON VENTED
MAINTENANCE.
WITH A DRAFT HOOD EQUIPPED APPLIANCE OR THE CHIMNEY IS LINED WITH A
METAL LINER OR
2. Remove the round cutout from the side of the furnace.
TYPE B METAL VENT. ALL INSTALLATIONS USING MASONRY
CHIMNEYS MUST BE SIZED IN ACCORDANCE WITH THE APPROPRIATE VENTING
NOTE: The assembly, starting from the outside, is induced draft
blower, outer gasket, rotation plate, inner gasket, partition panel
(See Figure 5).
TABLES. IF AN 80% FURNACE IS COMMON VENTED WITH A DRAFT HOOD
EQUIPPED APPLIANCE, THE POTENTIAL FOR CONDENSATION DAMAGE MAY
STILL EXIST WITH EXTREMELY COLD CONDITIONS, LONG VENT CONNECTORS,
EXTERIOR CHIMNEYS, OR ANY COMBINATION OF THESE CONDITIONS.
THE
RISK OF CONDENSATION DAMAGE IS BEST AVOIDED BY USING THE MASONRY
CHIMNEY AS A PATHWAY FOR PROPERLY SIZED METAL LINER OR
TYPE B
METAL VENT.
Crown
Wash
Roof Line
Clay Tile Size Generally
12" x 12" (24" Length)
Clay Tile Size: 8" x 8" x12"
(Each x 24" Length)
Attic Floor
1/2" to 1" Air Space
Figure 5 - Blower Assembly
3. Remove and save the four screws which hold the rotation
plate on the partition panel. Note that one of the screws
which hold the induced draft blower on the rotation plate
needs to be removed.
4. Turn the rotation plate 90 degrees counterclockwise. The
inner gasket must turn with the rotation plate.
5. Reinstall the rotation plate on the partition panel, using the
four screws removed in step 3. Tighten screws to provide
an airtight seal.
6. Make sure all wires are at least one inch from flue pipe.
Relocate junction box to right side of cabinet if necessary.
Refer to Section VIII, Electrical Connections for instructions.
Second Floor
Throat
Damper
First Floor
Breech
F.A.F. Vent
Connector
Fan Assisted
Forced Air
Furnace
Clean Out
WARNING
Water Heater
Vent Connector
Natural Draft
Water Heater
Basement Floor
Figure 6 - Typical Multiple Flue Clay Tile Chimney
TO PREVENT SERIOUS ILLNESS OR DEATH TO BUILDING OCCUPANTS DUE TO
FLUE PRODUCTS LEAKING INTO THE BUILDING, PROPER INSTALLATION OF
CHECKLIST SUMMARY
GASKETS AND SCREWS IS ESSENTIAL FOR PROVIDING A GAS TIGHT SEAL
BETWEEN THE PARTITION PANEL AND THE INDUCED DRAFT BLOWER.
This checklist serves as a summary of the items to be checked
before venting an 80+ furnace into a masonry chimney. In addition, we recommend that a qualified serviceman use this checklist to perform a yearly inspection of the furnace venting system.
This checklist is only a summary. For detailed information on each
of the procedures mentioned, see the paragraph referenced with
each item.
This inspection is based upon a draft topical report, “Masonry Chimney Inspection and Relining”, issued by the Gas Research Institute. While not yet finalized, we believe this report represents the
best information on this subject which is currently available.
12
Proper Chimney
Termination?
(Check 1)
No
Line, terminate with
listed vent cap
(Fix 1)
No
Change venting
arrangements
(Fix 2)
No
Rebuild crown
(Fix 3)
and/or Reline
(Fix 4)
No
Reline
(Fix 4)
No
Reline
(Fix 4)
No
Reline
(Fix 4)
Yes
Chimney channel
free of solid and
liquid fuel
appliances?
(Check 2)
Yes
Crown in good
condition
(Check 3)
Yes
Cleanout free of
debris?
(Check 4)
Figure 7
Termination 10 Feet Or Less From Ridge, Wall or Parapet
Yes
Liner in good
condition?
(Check 5)
Yes
Dilution air
available?
(Check 6)
Yes
Complete the
installation.
(Check 7)
CHECK 1 - PROPER CHIMNEY TERMINATION.
A masonry chimney used as a vent for gas fired equipment must
extend at least three feet above the highest point where it passes
through the roof. It must extend at least two feet higher than any
portion of a building within a horizontal distance of 10 feet. In addition, the chimney must terminate at least 3 feet above any forced air
inlet located within 10 feet. The chimney must extend at least five
feet above the highest connected equipment draft hood outlet or flue
collar.
If the chimney does not meet these termination requirements, but all
other requirements in the checklist can be met, it may be possible
for a mason to extend the chimney. If this will not be practical, see
Fix 1.
Figure 8
Termination More Than 10 Feet From Ridge, Wall or Parapet
CHECK 2 - ANY SOLID OR LIQUID FUEL APPLIANCES VENTED
INTO THIS CHIMNEY CHANNEL
Solid fuel appliances include fireplaces, wood stoves, coal furnaces,
and incinerators.
Liquid fuel appliances include oil furnaces, oil-fired boilers and oilfired water heaters.
13
Appliances which burn propane (sometimes referred to as LP (liquefied petroleum)) gas are considered gas-fired appliances.
CHECK 3 - CHIMNEY CROWN CONDITION.
Damage from condensate usually shows up first in the crown. If
any of the following trouble signs are present, the condition of the
crown is not satisfactory:
a) Crown leaning
b) Bricks missing
c) Mortar missing
d) Tile liner cracked
e) No tile liner
f) Salt staining at mortar joints. (White stains, and mortar
becomes sandy and/or erodes.)
For problems a, b, or c, see Fix 3. If problems d, e, or f are present,
see Fix 4. IMPORTANT: It may be necessary to follow both Fix 3
and Fix 4.
CHECK 4 - DEBRIS IN CLEANOUT
A cleanout (dropleg) must be present such that the upper edge of
the cleanout cover is at least 12 inches below the lower edge of the
lowest chimney inlet opening.
A chimney without a cleanout could become partially blocked by
debris. If no cleanout is present, the chimney must be refined (Fix
4).
Remove the cleanout cover, and examine the cleanout for debris. If
significant amounts of any of the following are found:
• Fuel oil residue
•
•
•
•
Bricks
If a metal liner is not present, a clay tile liner must be present, or the
chimney must be lined (Fix 4).
Use a flashlight and small mirror at the cleanout or vent connector
to inspect the clay tile liner. If any of the following problems are
present:
• Tile sections misaligned
•
•
•
Tile sections missing
•
•
Mortar protruding from between tile sections
Gaps between tile sections
Signs of condensate drainage at the cleanout or vent
connectors
Use of sewer pipe or drainage pipe rather than an approved
fire clay tile
reline the chimney (Fix 4).
Next, measure the size of the liner. It may be possible to do this
from the cleanout. The liner must be at least as large as the minimum size established by the tables in National Fuel Gas Code NFPA
54/ANSI Z223.1 - latest edition and in the National Standard of
Canada, CAN/CSA B149.1 and CAN/CSA B149.2 - latest editions
and amendments. If the liner is too small or too large, then the
chimney must be relined (Fix 4).
CHECK 6 - DILUTION AIR.
If gas-fired appliances are to be vented into a clay tile liner, a source
of dilution air is required.
Dilution air cannot be obtained through:
• Induced draft appliances
• Natural draft appliances with vent dampers
Sufficient dilution air can ordinarily be obtained through the draft
hood of a natural draft appliance only if the appliance’s vent connector does not include a vent damper.
If dilution air will not be available, the chimney must be relined (Fix
4).
Mortar or sand
Pieces of the tile liner
Rusted pieces of the metallic liner
reline the chimney (Fix 4).
CHECK 5 - LINER CONDITION.
If a metal liner is present, it must be checked. It cannot be assumed
that all existing metal liners are correctly installed and in good condition.
Remove the lowest existing vent connector, and examine the inside of the elbow or tee at the base of the liner. A small amount of
soot may be considered acceptable, provided the installer vacuums it away. If rusted pieces of the liner have collected here, the
metal liner must be removed and replaced (Fix 4).
Next, gently tap the inside of the liner with a Phillips screwdriver. If
the screwdriver perforates the liner, or if the tapping does not sound
like metal hitting metal, the liner must be removed and replaced
(Fix 4).
Remember that all appliances must be vented inside the liner. Venting one appliance inside the liner and another appliance outside
the liner is not acceptable.
Next, use a flashlight and small mirror to sight up the liner. B vent
must be supported so as to not come into direct contact with the
chimney walls or tile liner. If it is not, it can probably be rehung so as
to be acceptable. A thimble or fire stop may be helpful here.
Flexible liners should be hung straight or nearly straight. If it is spiraled in the chimney and in good condition, it should be rehung. To
do this, break the top seal; pull up and cut off the excess liner length,
and refit the top seal. Use caution when doing this, as the cut edges
of flexible liners may be sharp.
The surfaces of the liner must be physically sound. If gaps or holes
are present, the metal liner must be removed and replaced (Fix 4).
Finally, confirm that the metal liner is the correct size for the appliances to be installed. Use the GAMA tables and rules.
14
CHECK 7 - COMPLETE THE INSTALLATION.
If Checks 1 through 6 have been satisfactory, and the liner is an
acceptable size as determined by the tables in National Fuel Gas
Code NFPA 54/ANSI Z223.1 - latest edition and in the National
Standard of Canada, CAN/CSA B149.1 and CAN/CSA B149.2 latest editions and amendments, then the clay tile liner can probably be used as a vent for the gas appliances. However, the installer must keep in mind the following factors which may render
the tile liner unsuitable for use as a vent:
• Extremely cold weather
•
•
Long vent connectors
Masonry chimneys with no air gap between the liner and the
bricks. (In practice, this can be difficult to detect.)
•
Exterior chimneys (The tables in National Fuel Gas Code
NFPA 54/ANSI Z223.1 - latest edition and in the National
Standard of Canada, CAN/CSA B149.1 and CAN/CSA
B149.2 - latest editions and amendments assume interior
chimneys.)
If, in the judgment of the local gas utility, installer, and/or local codes;
one or more of the above factors is likely to present a problem, the
chimney must be relined (Fix 4).
FIX 1 - LINER TERMINATION.
Any cap or roof assembly used with a liner must be approved by
the liner manufacturer for such use. The liner and cap/roof assembly must then terminate above the roof in accordance with the
manufacturer’s instructions.
not suitable for use with gas-fired appliances. Flexible liners
specifically intended and tested for gas applications are listed
in the UL “Gas and Oil Equipment Directory”. (UL Standard
1777).
For sizing of flexible liners, see Note 22 and the tables in the National Fuel Gas Code NFPA 54/ANSI Z223.1 - latest edition and in
the National Standard of Canada, CAN/CSA B149.1 and CAN/CSA
B149.2 - latest editions and amendments.
To install the liner, read and follow the liner manufacturer’s instructions and your local codes. Excess liner length should be pulled out
of the chimney and cut off. Use caution when doing this, as the cut
edges of flexible liners may be sharp. Do not spiral excess liner
inside of the chimney. Support the liner as recommended by the
liner manufacturer.
Some manufacturers of flexible liners offer an insulation sleeve
designed to be added to the liner before it is installed in the chimney. (Poured insulation, either vermiculite or other materials, is no
longer recommended.) Insulation will need to be added to the flexible liner if:
• It is required by the liner manufacturer’s instructions.
In some cases, a shorter extension above the roof may be possible
with a liner than would be required with a masonry chimney.
For further information on relining, see Fix 4.
FIX 2 -CHANGE VENTING ARRANGEMENTS
If the masonry chimney has more than one channel, it may be possible to vent the gas appliances into one channel and vent the solid
or liquid fuel appliance(s) into another channel(s). Do not vent an
Amana® Air Command® 80 inside of a metal liner with other appliances vented outside the liner.
Alternatively, the homeowner may agree to discontinue use of the
fireplace (solid fuel appliance). If so, the tile liner must be cleaned
to remove creosote buildup. The fireplace opening must then be
permanently sealed.
If oil-fired appliance(s) are being replaced by gas-fired appliance(s),
the tile liner must first be cleaned to remove the fuel oil residue.
If none of the above options is practical, the Amana® Air Command®
80 may need to be vented vertically with a B Vent.
Under some conditions an Amana® Air Command® 90 or 95 could
be installed rather than an Amana® Air Command® 80. The Amana®
Air Command® 90 or 95 can be vented horizontally or vertically
through PVC pipe.
•
FIX 3 - REBUILD THE CROWN.
•
It is required by your local building codes.
Even if none of those three conditions exist which require additional liner insulation, the installer may wish to consider it if:
• The local climate is very cold.
• The chimney is very tall.
• The vent connectors used are very long or have a large
number of elbows.
• Local experience indicates that flexible liners installed without
insulation are likely to have condensation problems.
Insulation must be selected and installed in accordance with the
liner manufacturer’s instructions.
Finally, cap the chimney and terminate the liner in accordance with
the liner manufacturer’s instructions.
If the chimney crown is damaged, a qualified mason must repair it
in accordance with nationally recognized building codes or standards. One such standard which may be referenced is the Standard for Chimneys, Fireplaces, Vents, and Solid Fuel Burning Appliances, ANSI/NFPA 211.
FIX 4 - RELINING.
Relining options include B vent and flexible liners.
If the chimney has diagonal offsets, B vent probably cannot be used.
If B vent is to be used, it must be supported adequately. Supports
(such as fire stops or thimbles) must be used to prevent the B vent
from coming into direct contact with the tile liner or chimney walls.
Direct contact would result in higher heat loss, with an increased
possibility of poor venting system performance.
It is not acceptable to vent one appliance inside the B vent and
other appliances outside. The excess space between the B vent
and the chimney walls must be covered at the top of the chimney
by a weatherproof, corrosion resistant flashing.
The B vent should then be topped with a listed vent cap. The listed
vent cap will, when installed per the manufacturer’s instructions,
prevent problems due to rain, birds, or wind effects.
A B-vent installed as described in this section is considered to be
an enclosed vent system, and the sizing tables in National Fuel
Gas Code NFPA 54/ANSI Z223.1 - latest edition and in the National Standard of Canada, CAN/CSA B149.1 and CAN/CSA B149.2
- latest editions and amendments may be used.
If a flexible liner is to be used, it must be made of the proper materials:
• For most residential applications, an aluminum liner should
be acceptable.
•
•
The previous liner was properly sized and installed, and
suffered from condensation damage.
VIII. ELEC
TRI
C AL CO
NNEC
TI
ONS
ELECTRI
TRIC
CONNEC
NNECTI
TIO
WARNING
TO AVOID THE RISK OF ELECTRICAL SHOCK, WIRING TO THE UNIT MUST BE
POLARIZED AND GROUNDED.
WARNING
TO AVOID INJURY, ELECTRICAL SHOCK OR DEATH, DISCONNECT ELECTRICAL
POWER BEFORE SERVICING OR CHANGING ANY ELECTRICAL WIRING.
CAUTION
LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS.
WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS OPERATION.
VERIFY PROPER OPERATION AFTER SERVICING.
If the combustion air supplied to the furnace will be
contaminated with compounds containing chlorine or fluorine,
a liner of AL294C stainless steel should be used. Common
sources of chlorine and fluorine compounds include indoor
swimming pools and chlorine bleaches, paint strippers,
adhesives, paints, varnishes, sealers, waxes (which are not
yet dried) and solvents used during construction and
remodeling. Various commercial and industrial processes
may also be sources of chlorine/fluorine compounds.
WIRING HARNESS
The wiring harness is an integral part of this furnace. Field alteration to comply with electrical codes should not be required. Wires
are color and number coded for identification purposes. Refer to
the wiring diagram for wire routings. If any of the original wire as
supplied with the furnace must be replaced, it must be replaced
with wiring material having a temperature rating of at least 105° C.
Any replacement wiring must be a copper conductor.
Heavier gauge 300 and 400 series stainless steel liners were
developed for use with oil or solid fuel appliances. They are
15
WARNING
TO AVOID THE RISK OF ELECTRICAL SHOCK, WIRING TO THE UNIT MUST BE
POLARIZED AND GROUNDED.
115 VOLT LINE CONNECTIONS
Before proceeding with electrical connections, ensure that the supply voltage, frequency, and phase correspond to that specified on
the unit rating plate. Power supply to the furnace must be NEC
Class 1, and must comply with all applicable codes. The furnace
must be electrically grounded in accordance with local codes or, in
their absence, with the latest edition of The National Electric Code,
ANSI NFPA 70 and/or The Canadian Electric Code CSA C22.1.
Use a separate fused branch electrical circuit containing properly
sized wire, and fuse or circuit breaker. The fuse or circuit breaker
must be sized in accordance with the maximum overcurrent protection specified on the unit rating plate. An electrical disconnect must
be provided at the furnace location.
Line voltage wiring must enter into the junction box provided with the
furnace.
rotation of the fan. Also confirm that wiring location will not
interfere with filter removal or other maintenance.
After the junction box is in the desired location, use washers to connect field-supplied conduit to the junction box in accordance with
NEC and local codes. Connect hot, neutral, and ground wires as
shown in the furnace wiring diagram. The wires and ground screw
are located in the furnace junction box.
Low voltage wires may be connected to the terminal strip as shown
in Figure 10.
IMPORTANT NOTE: To avoid possible equipment malfunction, route
the low voltage wires to avoid interference with filter removal or other
maintenance.
COOL-H
PARK
E17
E16
HEAT -H
PARK
E28
E18
EAC-H
LINE-H
E13
E27
E14
XFMR-H
E20
HUM-H
E7
LINE-N
HIM-N
E8
EAC-N
E9
E4
XFMR-N
E10
CIR-N
E11
NOTE: Line polarity must be observed when making field
connections.
Line voltage connections can be made through either the right or left
side panel. The furnace is shipped configured for a right side electrical connection. To make electrical connections through the opposite side of the furnace, the junction box must be relocated to the left
side prior to making electrical connections. To relocate the junction
box, perform the following steps.
Y
Y
W R G C
W R G C
LOW VOLTAGE
RED
DIAGNOSTIC TERMINALS
LED
LOW VOLTAGE
TERMINALS
RED
DIAGNOSTIC
LED
WARNING
TO PREVENT PERSONAL INJURY OR DEATH DUE TO ELECTRIC SHOCK,
DISCONNECT ELECTRICAL POWER.
1. Remove both doors from the furnace.
2. Remove and save the screws holding the junction box to the
right side of the furnace.
3. Disconnect the hose from the pressure switch. Leave the other
end attached to the induced draft blower.
4. Remove two wires entering junction box from blower deck.
5. Swap locations of the two bushings in the junction box.
6. Rotate the junction box 180 degrees so the access panel
continues to face forward. The open snap bushing should
now be at the bottom.
7. Insert the two wires through the open bushing in the bottom
of the junction box.
8. Attach the junction box to the left side of the furnace, using
the screws removed in step 2.
OFF
ON
1
2
FUSE
Y
W R G C
LOW VOLTAGE
RED
DIAGNOSTIC TERMINALS
LED
Figure 10 - Integrated Ignition Control
(Viewed in an Upflow Installation)
WARNING
TO AVOID THE RISK OF INJURY, ELECTRICAL SHOCK OR DEATH, THE FURNACE
MUST BE ELECTRICALLY GROUNDED IN ACCORDANCE WITH LOCAL CODES OR,
IN THEIR ABSENCE, WITH THE LATEST EDITION OF THE
NATIONAL ELECTRIC
CODE.
Junction Box
(Right Side)
To ensure proper unit grounding, the ground wire should run from
the furnace ground screw located inside the furnace junction box all
the way back to the electrical panel. NOTE: Do not use gas piping
as an electrical ground. To confirm proper unit grounding, turn off
the electrical power and perform the following check.
Figure 9 - Junction Box (Left Side)
9. Reconnect the hose to the pressure switch.
10. Check the location of the pressure hose and all wiring. Confirm
that it will not be damaged by heat from the burners or by the
16
1. Measure resistance between the neutral (white) connection
and one of the burners.
2. Resistance should measure 10 ohms or less.
This furnace is equipped with a blower door interlock switch which
interrupts unit voltage when the blower door is opened for servicing. Do not defeat this switch.
OPTIONAL
ACCESSORIES
ELECTRONIC
AIR CLEANER
EAC-H
24 VOLT THERMOSTAT WIRING
120 VAC
HOT AND
PARK
TERMINALS
NOTE: Wire routing must not interfere with circulator blower
operation, filter removal, or routine maintenance.
Low voltage connections can be made through either the right or
left side panel. Thermostat wiring entrance holes are located in the
blower compartment. The following figure shows connections for a
“heat only” system and “heat/cool system”.
W1
W1
Y
R
G
R
Y
R
R
C
C
Figure 12 - Accessories Wiring
If it is necessary for the installer to supply additional line voltage
wiring to the inside of the furnace, the wiring must conform to all
local codes, and have a minimum temperature rating of 105°C. All
line voltage wire splices must be made inside the furnace junction
box.
The integrated control module humidifier terminals (HUM) are energized with 115 volts whenever the induced draft blower is energized. The integrated control module electronic air cleaner terminals (EAC) are energized with 115 volts whenever the circulator
blower is energized.
Y
C
G
G
Remote
Condensing
Unit
Furnace Control
W1
W1
Furnace Control
INTEGRATED
CONTROL
MODULE
12 PIN
CONNECTOR
C
Y
HUM-N
EAC-N
120 VAC
NEUTRAL
TERMINALS
Heating/Cooling
Room
Thermostat
Heating
Room
Thermostat
HUM-H
HUMIDIFIER
Figure 11 - Typical Field Wiring
(24 VAC Control Circuit)
This furnace is equipped with a 40 VA transformer to facilitate use
with most cooling equipment. Consult the wiring diagram, located
on the blower compartment door, for further details of 115 Volt and
24 Volt wiring.
IX. GA
S SUPPL
Y AND PIPIN
G
GAS
SUPPLY
PIPING
GENERAL
The furnace rating plate includes the approved furnace gas input
rating and gas types. The furnace must be equipped to operate on
the type of gas applied. This includes any conversion kits required
for alternate fuels and/or high altitude.
115 VOLT LINE CONNECTION OF ACCESSORIES (HUMIDIFIER
AND ELECTRONIC A IR CLEANER)
WARNING
CAUTION
TO AVOID PERSONAL INJURY, ELECTRICAL SHOCK OR DEATH, DISCONNECT
ELECTRICAL POWER BEFORE SERVICING OR CHANGING ANY ELECTRICAL
TO PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE, THE INLET
WIRING.
GAS SUPPLY PRESSURE MUST BE AS SPECIFIED ON THE UNIT RATING PLATE
WITH ALL OTHER HOUSEHOLD GAS FIRED APPLIANCES OPERATING.
The furnace integrated control module is equipped with line voltage
accessory terminals for controlling power to an optional field-supplied humidifier and/or electronic air cleaner.
The accessory load specifications are as follows:
Humidifier
Electronic Air Cleaner
Inlet gas supply pressures must be maintained within the ranges
specified in the following table. The supply pressure must be constant and available with all other household gas fired appliances
operating. The minimum gas supply pressure must be maintained
to prevent unreliable ignition. The maximum must not be exceeded
to prevent unit overfiring.
1.0 Amp maximum at 120 VAC
1.0 Amp maximum at 120 VAC
Turn OFF power to the furnace before installing any accessories.
Follow the humidifier or air cleaner manufacturers’ instructions for
locating, mounting, grounding, and controlling these accessories.
Accessory wiring connections are to be made through the 1/4" quick
connect terminals provided on the furnace integrated control module. The humidifier and electronic air cleaner hot and neutral terminals are identified as HUM and EAC. All field wiring must conform
to applicable codes. Connections should be made as shown in the
following illustration.
Inlet Gas Supply Pressure
Natural Gas Minimum: 5.0" w.c. Maximum:10.0" w.c.
Propane Gas Minimum: 11.0" w.c. Maximum:13.0" w.c.
NOTE: Adjusting the minimum supply pressure below the limits in
the above table could lead to unreliable ignition.
Gas input to the burners must not exceed the rated input shown on
the rating plate. Overfiring of the furnace can result in premature
heat exchanger failure. Gas pressures in excess of 13 inches water column can also cause permanent damage to the gas valve.
IMPORTANT NOTE: The furnace will naturally derate itself with
altitude. Do not attempt to increase the firing rate by changing orifices or increasing the manifold pressure. This can cause poor combustion and equipment failure.
At all altitudes, the manifold pressure must be within 0.3 inches
WC of that listed on the “Product Data bulletin” for the fuel used. At
all altitudes and with either fuel, the air temperature rise must be
within the range listed on the furnace nameplate.
17
HIGH ALTITUDE DERATE
When this furnace is installed at high altitude, the appropriate High
Altitude orifice kit must be applied. This is required due to the natural reduction in the density of both the gas fuel and combustion air
as altitude increases. The kit will provide the proper design certified input rate within the specified altitude range.
High altitude kits are purchased according to the installation altitude and usage of either natural or propane gas. Contact your distributor for a tabular listing of appropriate altitude ranges and corresponding manufacturer’s high altitude (Natural, Propane gas, and/
or Pressure Switch) kits.
Do not derate the furnace by adjusting the manifold pressure to a
lower pressure than specified on the furnace rating plate. The combination of the lower air density and a lower manifold pressure will
prohibit the burner orifice from drawing the proper amount of air
into the burner. This may cause incomplete combustion, flashback,
and possible yellow tipping.
In some areas the gas supplier may artificially derate the gas in an
effort to compensate for the effects of altitude. If the gas is artificially derated, the appropriate orifice size must be determined based
upon the BTU/ft3 content of the derated gas and the altitude. Refer
to the National Fuel Gas Code, NFPA 54/ANSI Z223.1, and information provided by the gas supplier to determine the proper orifice
size.
A different pressure switch may be required at high altitude regardless of the BTU/ft3 content of the fuel used. Contact your distributor
for a tabular listing of appropriate altitude ranges and corresponding manufacturer’s pressure switch kits.
PROPANE GAS CONVERSION
Natural Gas Capacity of Pipe
In Cubic Feet of Gas Per Hour (CFH)
Length of
Nominal Black Pipe Size
Pipe in Feet
1/2"
3/4"
1"
1 1/4"
10
132
278
520
1050
20
92
190
350
730
30
73
152
285
590
40
63
130
245
500
50
56
115
215
440
60
50
105
195
400
70
46
96
180
370
80
43
90
170
350
90
40
84
160
320
100
38
79
150
305
(Pressure 0.5 psig or less and pressure drop of 0.3" W.C.; Based on
0.60 Specific Gravity Gas)
CFH = BTUH Furnace Input
Heating Value of Gas (BTU/Cubic Foot)
To connect the furnace to the building’s gas piping, the installer
must supply a ground joint union, drip leg, manual shutoff valve,
and line and fittings to connect to gas valve. In some cases, the
installer may also need to supply a transition piece from 1/2" pipe
to a larger pipe size.
The following stipulations apply when connecting gas piping. Refer to Figure 13 for typical gas line connections to the furnace.
•
•
Use black iron or steel pipe and fittings for the building piping.
•
•
Use ground joint unions.
•
Install a 1/8" NPT pipe plug fitting, accessible for test gage
connection, immediately upstream of the gas supply
connection to the furnace.
•
Use two pipe wrenches when making connection to the gas
valve to keep it from turning. The orientation of the gas
valve on the manifold must be maintained as shipped from
the factory.
•
Install a manual shutoff valve between the gas meter and
unit within six feet of the unit. If a union is installed, the
union must be downstream of the manual shutoff valve,
between the shutoff valve and the furnace.
•
•
Tighten all joints securely.
WARNING
POSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH MAY OCCUR IF
THE CORRECT CONVERSION KITS ARE NOT INSTALLED. THE APPROPRIATE KITS
MUST BE APPLIED TO INSURE SAFE AND PROPER FURNACE OPERATION. ALL
CONVERSIONS MUST BE PERFORMED BY A QUALIFIED INSTALLER OR SERVICE
AGENCY.
This unit is configured for natural gas. The appropriate
manufacturer’s propane gas conversion kit, must be applied for propane gas installations. Refer to the “Propane Gas and/or High Altitude Installations” section for details.
Contact your distributor for a tabular listing of appropriate
manufacturer’s kits for propane gas and/or high altitude installations. The indicated kits must be used to insure safe and proper
furnace operation. All conversions must be performed by a qualified installer, or service agency.
GAS PIPING CONNECTIONS
Use pipe joint compound on male threads only. Pipe joint
compound must be resistant to the action of the fuel used.
Install a drip leg to trap dirt and moisture before it can enter
the gas valve. The drip leg must be a minimum of three
inches long.
Connect the furnace to the building piping by one of the
following methods:
–
–
GENERAL
CAUTION
–
TO AVOID POSSIBLE UNSATISFACTORY OPERATION OR EQUIPMENT DAMAGE
DUE TO UNDERFIRING OF EQUIPMENT, USE THE PROPER SIZE OF
NATURAL/PROPANE GAS PIPING NEEDED WHEN RUNNING PIPE FROM THE
–
METER/TANK TO THE FURNACE.
When sizing a trunk line, be sure to include all appliances which will
operate simultaneously when sizing a trunk line.
The gas piping supplying the furnace must be properly sized based
on the gas flow required, specific gravity of the gas, and length of
the run. The gas line installation must comply with local codes, or in
their absence, with the latest edition of the National Fuel Gas Code,
NFPA 54/ANSI Z223.1.
18
1 1/2"
1600
1100
980
760
670
610
560
530
490
460
Rigid metallic pipe and fittings.
Semi-rigid metallic tubing and metallic fittings.
Aluminum alloy tubing must not be used in exterior
locations.
Use listed gas appliance connectors in accordance with
their instructions. Connectors must be fully in the same
room as the furnace.
Protect connectors and semi-rigid tubing against
physical and thermal damage when installed. Ensure
aluminum-alloy tubing and connectors are coated to
protect against external corrosion when in contact with
masonry, plaster, or insulation, or subjected to repeated
wetting by liquids such as water (except rain water),
detergents, or sewage.
MANUAL
SHUT OFF VALVE
(UPSTREAM FROM
GROUND JOINT
PIPE UNION)
GAS VALVE
HEIGHT REQUIRED
BY LOCAL CODE
Figure 15 - Gas Inlet Through Furnace Left Side
(Upflow)
MANIFOLD
DRIP LEG
BURNERS
GROUND JOINT
PIPE UNION
Figure 13 - General Furnace Layout
UPFLOW INSTALLATIONS
When the gas piping enters through the right side of the furnace, the
installer must supply the following fittings (starting from the gas valve):
• 90 degree elbows (2).
• Close nipple.
• Straight pipe to reach the exterior of the furnace
(Figures 14 & 16).
A ground joint union, drip leg, and manual shutoff valve must also be
supplied by the installer. In some cases, the installer may also need
to supply a transition piece from 1/2" to another pipe size.
When the gas piping enters through the left side of the furnace, the
installer must supply the following fittings (starting from the gas valve):
• Straight pipe to reach the exterior of the furnace (Figures 15
& 17).
•
Figure 16 - Gas Inlet Through Furnace Bottom Side
(Upflow)
A ground joint union, drip leg, and manual shutoff valve must
also be supplied by the installer. In some cases, the installer
may also need to supply a transition piece from 1/2 inch to
another pipe size.
Figure 17 - Gas Inlet Through Furnace Top Side
(Upflow)
COUNTERFLOW INSTALLATIONS
When the gas piping enters through the left side of the furnace, the
installer must supply a straight pipe to reach the exterior of the furnace (Figure 18).
Figure 14 - Gas Inlet Through Furnace Right Side
(Upflow)
Figure 18 - Gas Inlet Through Left Side
(Counterflow)
19
A ground joint union, drip leg, and manual shutoff valve must also be
supplied by the installer. In some cases, the installer may also need
to supply a transition piece from 1/2" to another pipe size.
When the gas piping enters through the right side of the furnace, the
installer must supply the following fittings (starting at the gas valve):
• 90 degree elbow.
• Close nipple.
• 90 degree elbow.
• Straight pipe to reach exterior of furnace (Figure 19).
A ground joint union, drip leg, and manual shutoff valve must also be
supplied by the installer. In some cases, the installer may also need
to supply a transition piece from 1/2” to another pipe size.
Figure 19 - Gas Inlet Through Right Side (Counterflow)
“Left side” and “right side” above are as viewed for a counterflow
installation. Adaptation for horizontal airflow should be self explanatory.
GAS PIPING CHECKS
Before placing unit in operation, leak test the unit and gas connections.
WARNING
TO AVOID THE POSSIBILITY OF EXPLOSION OR FIRE, NEVER USE A MATCH OR
OPEN FLAME TO TEST FOR LEAKS.
Check for leaks using an approved chloride-free soap and water
solution, an electronic combustible gas detector, or other approved
testing methods.
CAUTION
PROPANE GAS TANKS AND PIPING
WARNING
IF THE GAS FURNACE IS INSTALLED IN A BASEMENT, AN EXCAVATED
AREA OR A CONFINED SPACE, IT IS STRONGLY RECOMMENDED TO
CONTACT A PROPANE SUPPLIER TO INSTALL A GAS DETECTING
WARNING DEVICE IN CASE OF A GAS LEAK.
•
SINCE PROPANE GAS IS HEAVIER THAN AIR, ANY LEAKING GAS CAN
•
PROPANE GAS ODORANT MAY FADE, MAKING THE GAS UNDETECTABLE
SETTLE IN ANY LOW AREAS OR CONFINED SPACES.
EXCEPT WITH A WARNING DEVICE.
A gas detecting warning system is the only reliable way to detect a
propane gas leak. Rust can reduce the level of odorant in propane
gas. Do not rely on your sense of smell. Contact a local propane
gas supplier about installing a gas detecting warning system. If the
presence of gas is suspected, follow the instructions on Page 4 of
this manual.
All propane gas equipment must conform to the safety standards of
the National Board of Fire Underwriters, NBFU Manual 58.
For satisfactory operation, propane gas pressure must be 11 inch
WC at the furnace manifold with all gas appliances in operation.
Maintaining proper gas pressure depends on three main factors:
1. Vaporization rate, depending on temperature of the liquid,
and “wetted surface” area of the container or containers.
2. Proper pressure regulation. (Two-stage regulation is
recommended for both cost and efficiency).
3. Pressure drop in lines between regulators, and between
second stage regulator and the appliance. Pipe size will
depend on length of pipe run and total load of all appliances.
Complete information regarding tank sizing for vaporization, recommended regulator settings, and pipe sizing is available from most
regulator manufacturers and propane gas suppliers.
Since propane gas will quickly dissolve white lead and most standard commercial compounds, special pipe dope must be used. Shellac-based compounds resistant to the actions of liquefied petroleum
gases such as Gasolac®, Stalactic®, Clyde’s® or John Crane® are
satisfactory.
Refer to the following illustration for typical propane gas installations
and piping.
5 to 15 PSIG
(20 PSIG Max.)
First Stage
Regulator
Continuous
11" W.C.
TO PREVENT PROPERTY DAMAGE OR PERSONAL INJURY DUE TO FIRE, THE
FOLLOWING INSTRUCTIONS MUST BE PERFORMED REGARDING GAS
200 PSIG
Maximum
CONNECTIONS, PRESSURE TESTING, LOCATION OF SHUTOFF VALVE AND
Second Stage
Regulator
INSTALLATION OF GAS PIPING.
NOTE: Never exceed specified pressures for testing. Higher
pressure may damage the gas valve and cause subsequent
overfiring, resulting in heat exchanger failure.
Disconnect this unit and shutoff valve from the gas supply piping
system before pressure testing the supply piping system with
pressures in excess of 1/2 psig (3.48 kPa).
Figure 20 - Propane Gas Installation (Typ.)
X. CIR
CUL
ATIN
G AIR AND FIL
TER
S
CIRCUL
CULA
TING
FILTER
TERS
DUCTWORK - AIR FLOW
This unit must be isolated from the gas supply system by closing its Duct systems and register sizes must be properly designed for the
manual shutoff valve before pressure testing of gas supply piping CFM and external static pressure rating of the furnace. Ductwork
system with test pressures equal to or less than 1/2 psig (3.48 kPa). should be designed in accordance with the recommended methods
of “Air Conditioning Contractors of America” Manual D.
A duct system must be installed in accordance with Standards of the
National Board of Fire Underwriters for the Installation of Air Conditioning, Warm Air Heating and Ventilating Systems. Pamphlets No.
90A and 90B.
A closed return duct system must be used, with the return duct connected to the furnace. NOTE: Ductwork must never be attached to
20
F IL
AIR FLOW
CENTRAL
RETURN
GRILLE
FILTER
FILTER
ACCESS
DOOR
TE
R
RETURN
DUCT
FIL
R
TE
CENTRAL
RETURN
GRILLE
FILTER
SUPPORT
BRACKET
SIDE RETURN
EXTERNAL FILTER
RACK KIT
(EITHER SIDE)
F IL T E R
F IL T E R
the back of the furnace. Supply and return connections to the
furnace may be made with flexible joints to reduce noise transmission. To prevent the blower from interfering with combustion air or
draft when a central return is used, a connecting duct must be
installed between the unit and the utility room wall. A room, closet,
or alcove must not be used as a return air chamber.
When the furnace is used in connection with a cooling unit, the
furnace should be installed in parallel with or on the upstream side
of the cooling unit to avoid condensation in the heating element.
With a parallel flow arrangement, the dampers or other means used
to control the flow of air must be adequate to prevent chilled air
from entering the furnace and, if manually operated, must be
equipped with means to prevent operation of either unit unless the
damper is in the full heat or cool position.
When the furnace is installed without a cooling coil, it is recommended that a removable access panel be provided in the outlet
air duct. This opening shall be accessible when the furnace is installed and shall be of such a size that the heat exchanger can be
viewed for visual light inspection or such that a sampling probe
can be inserted into the airstream. The access panel must be made
to prevent air leaks when the furnace is in operation.
When the furnace is heating, the temperature of the return air entering the furnace must be between 55°F and 100°F.
When a furnace is installed so that supply ducts carry air circulated by the furnace to areas outside the space containing the furnace, the return air shall also be handled by a duct sealed to the
furnace casing and terminating outside the space containing the
furnace.
Upflow
AIR FLOW
Counterflow
Figure 21 - Possible Upright Filter Locations
HORIZONTAL INSTALLATIONS
Filters must be installed in either the central return register or in the
return air duct work.
XI. SEQUEN
CE O
F OPERA
TI
ON (INTEGRA
TED
SEQUENCE
OF
OPERATI
TIO
(INTEGRATED
IGNITI
ON CO
NTR
OL)
IGNITIO
CONTR
NTRO
Refer to Timing Charts for sequencing.
NORMAL HEATING SEQUENCE
1.
2.
3.
4.
FILTERS - READ THIS SECTION BEFORE INSTALLING THE
RETURN AIR DUCTWORK
Filters must be used with this furnace. Discuss filter maintenance
with the building owner. Filters do not ship with this furnace, but
must be provided by the installer. Filters must comply with UL900
or CAN/ULCS111 standards. If the furnace is installed without filters, the warranty will be voided.
5.
Guide dimples locate the side return cutout locations. Use
a straight edge to scribe lines connecting the dimples. Cut
an opening to match the dimensions of these lines.
7.
8.
9.
6.
NOTE: An undersized opening will cause reduced airflow.
The bottom return is set up as a knock out.
10.
For air delivery of less than 1800 CFM, use a one side or bottom
return.
For air delivery of 1800 CFM or higher, use either two-sided returns or a one-sided return with a bottom return.
Refer to Minimum Filter Area tables at the end of this manual to
determine filter area requirements.
Thermostat calls for heat.
The induced draft blower is energized.
The igniter is energized and is allowed to preheat.
The gas valve is energized delivering gas to the burners and
starting combustion.
The control checks for a signal from the flame sensor within
seven seconds after the gas valve is energized. Gas will
only continue to flow if a signal is present.
The control waits 30 seconds and turns on the air circulation
blower to the speed that was selected for heating operation.
The thermostat is satisfied and opens.
The control de-energizes the gas valve.
After a 15 second delay while flue products are purged from
the furnace heat exchanger, the induced draft blower motor
is de-energized.
The air circulation blower has a delay-off timing of 90 seconds
(starting from the time the gas valve closes). This allows
more heat from the furnace to be transferred to the conditioned
space. After this time has elapsed, the blower will be deenergized. Some models include an optional adjustable delay
off timing of 60, 90, 120, or 180 seconds.
UPRIGHT INSTALLATIONS
NORMAL COOLING SEQUENCE - INTEGRATED IGNITION CON-
Depending on the installation and/or customer preference, differing filter arrangements can be applied. Filters can be installed in
the central return register, a side panel external filter rack kit (upflows), or the ductwork above a counterflow furnace. As an alternative, a media air filter or electronic air cleaner can be used as
the requested filter. The following figures show possible filter locations.
With the room thermostat in the FAN-AUTO position, the indoor air
circulation blower and outdoor condensing unit will be energized when
a call for cooling occurs. When the call for cooling ends, the outdoor
condensing unit will be de-energized. The indoor air circulation blower
will continue to run for 45 seconds.
TROL
CONSTANT FAN
During normal operation, the air circulation blower will continually
run at “Cooling” speed as long as power is present at terminal G. If
a call for heat occurs, the blower will run at heating speed throughout the heating cycle.
If a trip on high/auxiliary/rollout limit occurs, the air circulation blower
will run at “Heating” speed. Even if power is present at terminal G,
the blower will run at heating speed until the limit closes.
21
FURNACE SHUTDOWN
XII. ST
AR
T-UP PR
OCEDURE AND AD
JUST
MENT
STAR
ART
PROCEDURE
ADJUST
JUSTMENT
Furnace must have a 115 VAC power supply properly connected
and grounded. Proper polarity must be maintained for correct operation. An interlock switch prevents furnace operation if the blower
door is not in place. Keep the blower access door in place except for
inspection and maintenance.
This furnace is also equipped with a self-diagnosing electronic control module. In the event a furnace component is not operating properly, the control module LED will flash on and off in a factory-programmed sequence, depending on the problem encountered. This
light can be viewed through the observation window in the blower
access door. Refer to the Troubleshooting Chart for further explanation of the lighting codes.
On new installations, or if a functional part such as the gas valve,
pressure switch, or limit control has been replaced, verify that the
furnace is operating properly after servicing.
Check furnace operation as outlined in the following instructions. If
any sparking, odors, or unusual noises are encountered, shut off
electrical power and recheck for wiring errors, or obstructions in or
near the blower motors. Various shipping materials must be removed
before the blower motor is operated. In addition to the following
start-up and adjustment items, refer to further information in Section
XIII, Operational Checks.
1. Set the thermostat to lowest setting.
2. Turn off the electrical power supply to the furnace.
3. White-Rodgers Models 36E22/36F22/36G22: Push switch
to the OFF position.
4. Close manual gas shutoff valve external to the furnace.
5. Replace the door on the unit.
Gas Valve
On/Off
Selector
Switch
INLET
ON
Inlet Pressure Tap
(Side of Valve)
M
1
P
3
C
2
OUTLET
Outlet (Manifold)
Pressure Tap
(Side of Valve)
Pressure Regulator
Adjustment
(Under Cap Screw)
Figure 23 - White-Rodgers Model 36E22
HEAT ANTICIPATOR SETTING
Gas Valve
On/Off
Selector
Switch
The heat anticipator in the room thermostat must be correctly adjusted to obtain the proper number of cycles per hour and to prevent
“overshooting” of the setting. Set the heat anticipator setting to 0.7
amps. Follow the thermostat manufacturer’s instructions on how to
adjust the heat anticipator setting.
INLET
FURNACE OPERATION
OUTLET
Inlet Pressure Tap
(Side of Valve) Pressure Regulator
Adjustment
(Under Cap Screw)
Purge gas lines of air prior to start-up. Do not purge lines into an
enclosed burner compartment.
Check for leaks using an approved chloride-free soap and water
solution, an electronic combustible gas detector, or other approved
method. Verify that all required kits (propane gas, high altitude, etc.)
have been appropriately installed.
Outlet Pressure
Tap
Close the manual gas shutoff valve external to the furnace.
Turn off the electrical power to the furnace.
Set the room thermostat to the lowest possible setting.
Remove the burner compartment door.
Pressure Regulator
Adjustment
(Under Cap Screw)
INLET
Inlet Pressure
Tap
NOTE: This furnace is equipped with an ignition device which
automatically lights the burner. Do not try to light the burner by hand.
5. White-Rodgers Models 36E22/36F22/36G22: Push the switch
to the OFF position.
6. Wait five minutes to clear out any gas. Then smell for gas,
including near the floor.
7. If gas can be smelled following the five minute waiting period
in Step 6, immediately follow the instructions on Page 4 of
this manual. If you do not smell gas after five minutes:
White-Rodgers Models 36E22/36F22/36G22: Push the switch
to the ON position.
8. Replace the door on the front of the furnace.
9. Open the manual gas valve external to the furnace.
10. Turn on the electrical power supply to the furnace.
11. Set the room thermostat to the desired temperature.
NOTE: There is an approximate 20 second delay between thermostat energizing and burner firing.
22
Outlet (Manifold)
Pressure Tap
Figure 24 - White-Rodgers Model 36F22
FURNACE START-UP
1.
2.
3.
4.
O
F
F
OUTLET
Gas Valve
On/Off
Selector
Switch
Figure 25 - White-Rodgers Model 36G22
GAS SUPPLY PRESSURE MEASUREMENT
CAUTION
ng
o
i.p
a
e
trTO
PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE, THE INLET
GAS SUPPLY PRESSURE MUST BE AS SPECIFIED ON THE UNIT RATING PLATE
WITH ALL OTHER HOUSEHOLD GAS FIRED APPLIANCES OPERATING.
The line pressure supplied to the gas valve must be within the range
specified below. The supply pressure can be measured at the gas
valve inlet pressure tap or at a hose fitting installed in the gas piping
drip leg. The supply pressure must be measured with the burners
operating. To measure the gas supply pressure, use the following
procedure.
With Power and Gas Off:
1. Honeywell Model VR8205, or White-Rodgers Models 36E22,
or White-Rodgers Model 36F22: Connect a water manometer
or adequate gauge to the “inlet pressure tap” of the gas valve.
As an alternative method, inlet gas pressure can also be
measured by removing the cap from the drip leg and installing
a predrilled cap with a hose fitting (Figure 26).
With Power and Gas On:
2. Put furnace into heating cycle and turn on all other gas
consuming appliances.
If operating pressures differ from above, make necessary pressure
regulator adjustments, check piping size, etc., and/or consult with
local utility.
Only small variations in gas pressure should be made by adjusting
the gas valve pressure regulator. The manifold pressure must be
measured with the burners operating. To measure and adjust the
manifold pressure, use the following procedure.
1. Turn OFF gas to furnace at the manual gas shutoff valve
external to the furnace.
2. Connect a calibrated water manometer (or appropriate gas
pressure gauge) at the gas valve outlet pressure tap (refer to
gas valve figure in previous section).
3. Turn ON the gas supply and operate the furnace.
4. Measure gas manifold pressure with burners firing. Adjust
manifold pressure according to the table below:
Manifold Gas Pressure
Gas
Natural
Propane
Gas Line
Gas
Shutoff
Valve
GAS INPUT RATE MEASUREMENT (NATURAL GAS ONLY)
The gas input rate to the furnace must never be greater than that
specified on the unit rating plate. To measure natural gas input using the gas meter, use the following procedure.
Gas Line
To Furnace
1. Turn OFF the gas supply to all other gas-burning appliances
except the furnace.
2. While the furnace is operating, time and record one complete
revolution of the smallest gas meter dial.
3. Calculate the number of seconds per cubic foot (sec/ ft3) of
gas being delivered to the furnace. If the dial is a one cubic
foot dial, divide the number of seconds recorded in step 2 by
one. If the dial is a two cubic foot dial, divide the number of
seconds recorded in step 2 by two.
4. Calculate the furnace input in BTUs per hour (BTU/ hr). Input
equals the sum of the installation’s gas heating value and a
conversion factor (hours to seconds) divided by the number
of seconds per cubic foot. The measured input must not be
greater than the input indicated on the unit rating plate.
EXAMPLE:
Installation’s gas heating (HTG) value: 1,000 BTU/ft3
(Obtained from gas supplier)
Installation’s seconds per cubic foot: 34 sec/ ft3
Conversion Factor (hours to seconds): 3600 sec/hr
Input = (Htg. value x 3600) ÷ seconds per cubic foot
Input = (1,000 BTU/ft3 x 3600 sec/hr) ÷ 34 sec/ ft3
Input = 106,000 BTU/hr
Open To
Atmosphere
Drip Leg Cap
With Fitting
Manometer Hose
Manometer
Figure 26 - Measuring Inlet Gas Pressure
(Alternate Method)
3. Turn ON the gas supply and operate the furnace and all other
gas consuming appliances on the same gas supply line.
4. Measure furnace gas supply pressure with burners firing.
Supply pressure must be within the range specified in the
table below.
Natural Gas
Propane Gas
Inlet Gas Supply Pressure
Minimum: 5.0" w.c. Maximum:10.0" w.c.
Minimum: 11.0" w.c. Maximum:13.0" w.c.
If supply pressure differs from table, make the necessary adjustments to pressure regulator, gas piping size, etc., and/or consult
with local gas utility.
5. Turn OFF gas to furnace at the manual shutoff valve and
disconnect manometer. Reinstall plug before turning on gas
to furnace.
6. Turn OFF any unnecessary gas appliances started in step 3.
GAS MANIFOLD PRESSURE MEASUREMENT AND ADJUSTMENT
CAUTION
TO PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE, THE GAS
MANIFOLD PRESSURE MUST BE AS SPECIFIED ON THE UNIT RATING PLATE.
ONLY MINOR ADJUSTMENTS SHOULD BE MADE BY ADJUSTING THE GAS VALVE
PRESSURE REGULATOR.
Range
Nominal
3.2 to 3.8" w.c. 3.5" w.c.
9.7 to 10.3" w.c. 10.0" w.c.
This measured input must not be greater than the input
indicated on the unit rating plate.
5. Turn ON gas and relight appliances turned off in step 1.
Ensure all the appliances are functioning properly and that
all pilot burners are operating.
TEMPERATURE RISE
Air temperature rise is the temperature difference between supply
and return air. The proper amount of temperature rise is usually
obtained when the unit is operated at the rated input with the “as
shipped” blower speed. If the correct amount of temperature rise is
not obtained, it may be necessary to change the blower speed.
An incorrect temperature rise can cause condensing in or overheating of the heat exchanger. Determine and adjust the temperature
rise as follows. The temperature rise must be within the range specified on the rating plate or Product Data Bulletin.
23
PROPANE GAS PIPING CHARTS
HEAT EXCHANGER
RADIATION "LINE OF SIGHT"
Sizing Between First and Second Stage Regulator*
Maximum Propane Capacities listed are based on 2 psig pressure drop at 10 psig setting.
Capacities in 1,000 BTU/hour.
Pipe or
Nominal Pipe Size
Tubing
Tubing Size, O.D. Type L
Schedule 40
Length,
3/8"
1/2"
5/8"
3/4"
7/8"
1/2"
3/4"
Feet
10
730
1,700
3,200
5,300
8,300
3,200
7,500
20
500
1,100
2,200
3,700
5,800
2,200
4,200
30
400
920
2,000
2,900
4,700
1,800
4,000
40
370
850
1,700
2,700
4,100
1,600
3,700
50
330
770
1,500
2,400
3,700
1,500
3,400
60
300
700
1,300
2,200
3,300
1,300
3,100
80
260
610
1,200
1,900
2,900
1,200
2,600
100
220
540
1,000
1,700
2,600
1,000
2,300
125
200
490
900
1,400
2,300
900
2,100
150
190
430
830
1,300
2,100
830
1,900
175
170
400
780
1,200
1,900
770
1,700
200
160
380
730
1,100
1,800
720
1,500
To convert to capacities at 15 psig settings - multiply by 1.130
To convert to capacities at 5 psig settings - multiply by 0.879
SUPPLY
AIR
TSUPPLY
RISE =
TSUPPLY - TRETURN
T RETURN
RETURN
AIR
Sizing Between Single or Second Stage Regulator and Appliance*
Maximum Propane Capacities Listed are Based on 1/2" W.C. pressure drop at 11" W.C. setting.
Capacities in 1,000 BTU/hour.
Pipe or
Nominal Pipe Size
Tubing
Tubing Size, O.D. Type L
Schedule 40
Length, 3/8"
1/2"
5/8"
3/4"
7/8" 1-1/8" 1/2"
3/4"
1"
1-1/4" 1-1/2"
Feet
10
39
92
199
329
501
935
275
567 1,071 2,205 3,307
20
26
62
131
216
346
630
189
393
732 1,496 2,299
30
21
50
107
181
277
500
152
315
590 1,212 1,858
40
19
41
90
145
233
427
129
267
504 1,039 1,559
50
18
37
79
131
198
376
114
237
448
913 1,417
60
16
35
72
121
187
340
103
217
409
834 1,275
80
13
29
62
104
155
289
89
185
346
724 1,066
100
11
26
55
90
138
255
78
162
307
630
976
125
10
24
48
81
122
224
69
146
275
567
866
150
9
21
43
72
109
202
63
132
252
511
787
200
8
19
39
66
100
187
54
112
209
439
665
250
8
17
36
60
93
172
48
100
185
390
590
Figure 27 - Temperature Rise Measurement
1. Operate furnace with burners firing approximately 15 minutes.
Ensure all registers are open and all duct dampers are in
their final (fully or partially open) position.
2. Place thermometers in the return and supply ducts as close
to the furnace as possible. Thermometers must not be
influenced by radiant heat by being able to “see” the heat
exchanger.
3. Subtract the return air temperature from the supply air
temperature to determine the air temperature rise. Allow
adequate time for thermometer readings to stabilize.
4. Adjust temperature rise by adjusting the circulator blower
speed. Increase blower speed to reduce temperature rise.
Decrease blower speed to increase temperature rise. Refer
to the following section for speed changing details.
*Data in accordance with NFPA pamphlet NO. 54
(Terminals are identified as HEAT and COOL (hot)). If heating
and cooling blower speeds are the same, a jumper wire must
be used between the heat and cool terminals.
4. Connect all unused blower motor leads to the “PARK”
terminals on the integrated control module. Any leads not
connected to the “PARK” terminals must be taped.
5. Turn ON power to furnace.
6. Verify proper temperature rise as outlined in Temperature Rise
section.
CIRCULATOR BLOWER SPEED ADJUSTMENT
WARNING
TO AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK, TURN
OFF POWER TO THE FURNACE BEFORE CHANGING SPEED TAPS.
This furnace is equipped with a PSC circulator blower motor. This
blower provides ease in adjusting blower speeds. Refer to the Product Data Bulletin provides an airflow table, showing the relationship
between airflow (CFM) and external static pressure (E.S.P.), for the
proper selection of heating and cooling speeds. The cooling blower
speed is shipped set on HIGH, and the heating blower speed is set
as indicated in the Product Data Bulletin. These blower speeds should
be adjusted by the installer to match the installation requirements so
as to provide the correct heating temperature rise and the correct
cooling CFM.
To adjust the circulator blower speed, proceed as follows:
1. Turn OFF power to the furnace.
2. Select the heating and cooling blower speeds that match the
installation requirements from the airflow table in the Product
Data Bulletin.
3. Relocate desired motor leads to the circulator blower heat
and cool speed terminals on the integrated control module.
24
Circulator Blower Speeds
Low
Red
Medium Low
Orange
Medium
Blue
High
Black
Common/Neutral
White
Figure 28
Wiring Designations
CIRCULATOR BLOWER FAN TIMING ADJUSTMENT
NOTE: Items in this section refer to the air circulator blower fan,
NOT to the induced draft blower. The induced draft blower timing
sequence is not adjustable. The circulator blower fan timing is adjustable only on models with optional “heating fan OFF delay” adjustment pins or switches (Figure 29). It is NOT adjustable in any
other circumstances.
As shipped, the circulator blower fan will remain on for 90 seconds
after the gas valve closes.
When a call for cooling occurs, the circulator fan comes on and remains on for 45 seconds after the call for cooling ends. During normal heating operation, the circulator fan will come on approximately
37 seconds after the gas valve opens.
Style B
Style A
OFF
1 2
ON
COMPARTMENT COVERS OR ATTEMPT ANY ADJUSTMENT.
OFF
1 2
ON
B1
QUALIFIED SERVICE AGENT AT ONCE IF AN ABNORMAL FLAME APPEARANCE
PREVENT PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO FIRE,
B3
FOLLOW THESE DIRECTIONS FOR THE AUXILIARY LIMIT CONTROL. IF THE
B4
AUXILIARY LIMIT CONTROL OPENS, IT MAY BE RESET ONE TIME ONLY.
OFF
1 2
B1
(SERVICER’S NOTE: If it becomes necessary to slide the blower
assembly out of the furnace, the auxiliary limit control should be removed first. After the blower assembly is reinstalled, the auxiliary
limit must be reinstalled.)
B3
B4
B2
OFF
180
Second
Delay
TO AVOID PERSONAL INJURY OR DEATH, DO NOT REMOVE ANY INTERNAL
ELECTRICAL
COMPONENTS ARE CONTAINED IN BOTH COMPARTMENTS. CONTACT A
B3
B4
B2
ON
120
Second
Delay
B1
B2
1 2
90
Second
Delay
WARNING
B2
ON
60
Second
Delay
B1
PRIMARY LIMIT
B3
B4
Switches viewed in an upflow installation.
Figure 29 - Heating Fan Off Adjustments
XIII. OPERA
TI
ONAL CHECK
S
OPERATI
TIO
CHECKS
WARNING
TO AVOID PERSONAL INJURY OR DEATH, DO NOT REMOVE ANY INTERNAL
COMPARTMENT COVERS OR ATTEMPT ANY ADJUSTMENT. ELECTRICAL
COMPONENTS ARE CONTAINED IN BOTH COMPARTMENTS. CONTACT A
QUALIFIED SERVICE AGENT AT ONCE IF AN ABNORMAL FLAME APPEARANCE
SHOULD DEVELOP.
BURNER FLAME
The burner flames should be inspected with the burner compartment door installed. Flames should be stable, quiet, soft, and blue
(dust may cause orange tips but they must not be yellow). Flames
should extend directly outward from the burners without curling, floating, or lifting off. Flames must not impinge on the sides of the heat
exchanger firing tubes.
The primary limit control guards against overheating resulting from
insufficient conditioned air passing over the heat exchanger. If the
primary limit control does not function during this test, the cause
must be determined and corrected. Function of this control should
be verified by gradually blocking the furnace return air after the furnace has been operating (burners firing) for approximately ten minutes. Check the control as follows:
1. Allow the furnace to operate with burners firing continuously
for approximately ten minutes.
2. Gradually block the return air to furnace. Remove airflow
blockage when limit control is activated and turns off burners.
Airflow blockage causes unit overheating and will produce
the following reactions:
• The gas valve to close and extinguish flame,
• The induced draft blower to be de-energized after a fifteen
second postpurge, and
• The circulator blower to remain energized continuously until
limit control resets.
3. Remove the return air blockage to clear overheating condition.
After an acceptable temperature is reached during the cool
down period, the limit control will reset and allow the furnace
to resume normal operation.
WARNING
TO PREVENT PREMATURE FAILURE OF HEAT EXCHANGER, PROPERTY DAMAGE,
PERSONAL INJURY OR DEATH, DO NOT ADJUST THE LIMIT CONTROL (FACTORY
SET).
Primary Limit Control
Check the burner flames for:
1. Good adjustment
2. Stable, soft and blue
3. Not curling, floating, or lifting off.
Figure 30 - Burner Flame
AUXILIARY LIMIT CONTROL
A manual reset limits are located on or near the blower. To access
this auxiliary limit, disconnect the electrical power and remove the
blower door. If the limit control opens, the air circulation blower will
run continuously. The diagnostic light will flash four times. These
symptoms are identical to a trip of the primary limit control.
The auxiliary limit control is designed to prevent furnace operation in
case of main blower failure on horizontal and counterflow installations. It may also open if the power supply is interrupted while the
furnace is firing.
The auxiliary limit control is suitable for both horizontal right and
horizontal left installations. Regardless of airflow direction, it does
not need to be relocated.
Figure 31 - Primary Limit Control
IMPORTANT NOTE: This unit must not be used as a construction
heater during the finishing phases of construction of a new structure. This type of use may result in premature failure due to extremely
low return air temperatures and exposure to corrosive or very dirty
atmospheres.
These checks establish that the primary limit control is functioning
and will respond to a restriction in the return air, or a circulator blower
failure. If the primary limit control does not function during this test,
the cause must be determined and corrected.
25
XIV
Y CIR
CUIT DESCRIPTI
ON
XIV.. SAFET
SAFETY
CIRCUIT
DESCRIPTIO
GENERAL
A number of safety circuits are employed to ensure safe and proper
furnace operation. These circuits serve to control any potential safety
hazards and serve as inputs in the monitoring and diagnosis of abnormal function. These circuits are continuously monitored during
furnace operation by the integrated control module.
INTEGRATED CONTROL MODULE
The integrated control module is an electronic device which controls
all furnace operations. Responding to the thermostat, the module
initiates and controls normal furnace operation, and monitors and
addresses all safety circuits. If a potential safety concern is detected,
the module will take the necessary precautions and provide diagnostic information through an LED.
PRIMARY LIMIT
The primary limit control is located on the partition panel and monitors heat exchanger compartment temperatures. It is a normallyclosed (electrically), automatic reset, temperature-activated sensor.
The limit guards against the overheating as a resulting of insufficient
conditioned air passing over the heat exchanger.
1. Disconnect all power to the furnace. Do not touch the
integrated control module or any wire connected to the control
prior to discharging your body’s electrostatic charge to
ground.
2. Firmly touch a clean, unpainted, metal surface of the furnace
away from the control. Any tools held in a person’s hand
during grounding will be discharged.
3. Service integrated control module or connecting wiring
following the discharge process in step 2. Use caution not to
recharge your body with static electricity; (i.e., do not move
or shuffle your feet, do not touch ungrounded objects, etc.).
If you come in contact with an ungrounded object, repeat step
2 before touching control or wires.
4. Discharge your body to ground before removing a new control
from its container. Follow steps 1 through 3 if installing the
control on a furnace. Return any old or new controls to their
containers before touching any ungrounded object.
DIAGNOSTIC CHART
WARNING
TO AVOID ELECTRICAL SHOCK, INJURY OR DEATH, DISCONNECT ELECTRICAL
POWER BEFORE PERFORMING ANY SERVICE OR MAINTENANCE.
AUXILIARY LIMIT
Refer to the troubleshooting chart on the following pages for assisThe auxiliary limit control is located either on or near the circulator
tance in determining the source of unit operational problems. The
blower and monitors heat exchanger compartment temperatures.
red diagnostic LED blinks to assist in troubleshooting the unit. The
The control is a normally-closed (electrically), manual-reset, temnumber of blinks refer to a specific code.
perature activated sensor. It guards against overheating resulting
from insufficient conditioned air passing over the heat exchanger.
RESETTING FROM LOCKOUT
ROLLOUT LIMITS
The rollout limit controls are mounted on the burner/manifold assembly and monitor the burner flame. They are normally-closed
(electrically), manual-reset, temperature-activated sensors. This limit
guards against burner flames not being properly drawn into the heat
exchanger.
PRESSURE SWITCHES
The pressure switches are normally-open (closed during operation),
single-pole single-throw, negative air pressure-activated switches.
They monitor the airflow (combustion air and flue products) through
the heat exchanger via pressure taps located on the induced draft
blower. These switches guard against insufficient airflow (combustion air and flue products) through the heat exchanger.
FLAME SENSOR
The flame sensor is a probe mounted to the burner/manifold assembly which uses the principle of flame rectification to determine the
presence or absence of flame.
Furnace lockout results when a furnace is unable to achieve ignition
after three attempts, or when it has lost flame five times during a
single call for heat. It is characterized by a non-functioning furnace
and a one flash diagnostic LED code from the red LED. If the furnace is in “lockout”, it will (or can be) reset in any of the following
ways.
1. Automatic reset. The integrated control module will
automatically reset itself and attempt to resume normal
operations following a one hour lockout period.
2. Manual power interruption. Interrupt 115 volt power to the
furnace for 0 - 20 seconds.
3. Manual thermostat cycle. Lower the thermostat so that there
is no longer a call for heat for 0 -20 seconds then reset to
previous setting.
NOTE: If the condition which originally caused the lockout still exists,
the control will return to lockout. Refer to the Diagnostic Chart for
aid in determining the cause.
XVI. MAINTENAN
CE
MAINTENANCE
OUBLESH
OO
TIN
G
OUBLESHOO
OOTIN
TING
XV.. TR
TROUBLESH
XV
WARNING
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
NOTE: Discharge body’s static electricity before touching unit. An
electrostatic discharge can adversely affect electrical components.
TO AVOID ELECTRICAL SHOCK, INJURY OR DEATH, DISCONNECT ELECTRICAL
POWER BEFORE PERFORMING ANY MAINTENANCE. IF YOU MUST HANDLE THE
IGNITER, HANDLE WITH CARE.
TOUCHING THE IGNITER ELEMENT WITH BARE
FINGERS, ROUGH HANDLING, OR VIBRATION COULD DAMAGE THE IGNITER
Use the following precautions during furnace installation and servicing to protect the integrated control module from damage. By putting the furnace, the control, and the person at the same electrostatic potential, these steps will help avoid exposing the integrated
control module to electrostatic discharge. This procedure is applicable to both installed and uninstalled (ungrounded) furnaces.
26
RESULTING IN PREMATURE FAILURE.
ONLY A QUALIFIED SERVICER SHOULD
EVER HANDLE THE IGNITER.
ANNUAL INSPECTION
The furnace should be inspected by a qualified installer, or service
agency at least once per year. This check should be performed at
the beginning of the heating season. This will ensure that all furnace
Timing Chart for Integrated Ignition Control Normal Heating Operation
Circulator
Blower
ON
OFF
Gas Valve
OPEN
CLOSED
Igniter
ON
OFF
Pressure Switch
Contacts
CLOSED
OPEN
Induced Draft
Blower
ON
OFF
Thermostat
ON
OFF
SECONDS
t ign
0
IGNITER
WARM UP PERIOD
(see note)
t circ
0
15
FIXED HEAT
ON DELAY:
30 SECONDS
60,90,
120 or
180
NOTE: CUSTOM CONTROLS, INC. INTEGRATED CONTROL MODULE HAS A FIXED
STANDARD SEVEN-SECOND IGNITER WARM UP PERIOD
(MINI IGNITER).
WHITE-RODGERS 50A55 or 50T55 INTEGRATED CONTROL MODULE HAS A
VARIABLE STANDARD IGNITER WARM UP PERIOD BETWEEN
A 17-SECOND MAXIMUM AND A FIVE-SECOND MINIMUM.
WHITE-RODGERS 50A65 INTEGRATED CONTROL MODULE HAS A
20-SECOND IGNITER WARM UP PERIOD (SILICON NITRIDE).
Timing Chart for Integrated Ignition Control Normal Cooling Operation
Indoor Fan
ON
OFF
Outdoor Fan
and
Compressor
ON
OFF
Thermostat
ON
OFF
Seconds
0
5
0
27
45
mended on adhesive container. Spray adhesives for use with permanent metal filters can be found at some hardware stores. BE
SURE AIRFLOW DIRECTION ARROW POINTS TOWARDS THE
BLOWER.
components are in proper working order and that the heating system functions appropriately. Pay particular attention to the following items. Repair or service as necessary.
• Flue pipe system. Check for blockage and/or leakage.
Check the outside termination and the connections at and
internal to the furnace.
•
Heat exchanger. Check for corrosion and/or buildup within
the heat exchanger passageways.
•
Burners. Check for proper ignition, burner flame, and flame
sense.
•
Wiring. Check electrical connections for tightness and/or
corrosion. Check wires for damage.
•
Filters.
COUNTERFLOW FILTER REMOVAL
FILTERS
WARNING
TO AVOID PROPERTY DAMAGE,
PERSONAL INJURY OR DEATH, DISCONNECT
ELECTRICAL POWER BEFORE REMOVING FILTERS.
NEVER OPERATE FURNACE
WITHOUT A FILTER INSTALLED BECAUSE DUST AND LINT WILL BUILD UP ON
INTERNAL PARTS RESULTING IN LOSS OF EFFICIENCY, EQUIPMENT DAMAGE
AND POSSIBLE FIRE.
A return air filter is not supplied with this furnace; however, there
must be a means of filtering all of the return air. The installer will
supply filter(s) at the time of installation.
FILTER MAINTENANCE
Improper filter maintenance is the most common cause of inadequate heating or cooling performance. Filters should be cleaned
(permanent) or replaced (disposable) every two months or as required. When replacing a filter, it must be replaced with a filter of
the same type and size.
WARNING
TO PREVENT PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO
ELECTRICAL SHOCK, DISCONNECT ELECTRICAL POWER TO THE FURNACE
BEFORE REMOVING THE FILTER OR PERFORMING ANY OTHER MAINTENANCE.
Become familiar with filter location and procedures for removal,
cleaning and replacing them. If help is needed, contact the installer of the furnace or a qualified servicer.
FILTER REMOVAL
A furnace mounted filter rack ordered from distributor.
NOTE: If using Media Air Cleaner or Electronic Air Cleaner, follow the instructions that came with the air cleaner for proper filter
removal, cleaning, and replacement procedures.
The furnace-mounted filter rack is mounted on the top of the furnace. Two filters fit into the rack and rest against the sides of the
return air plenum, forming a “V” above the furnace.
Inspect the filters frequently and clean or replace when necessary. In some installations, the filters can be inspected only after
the electrical power is disconnected and the optional access door
in the return air plenum removed. If the access door is not present,
proceed as follows:
1. Disconnect the electrical power.
2. Remove the non-louvered door from the furnace.
3. Remove the left filter by reaching to the left side of the
blower, pushing the filter up slightly to remove it from the
filter rack, and pulling it down to the left of the blower and
out the blower door. Repeat with the right filter.
4. Inspect filter. If your dirty filter is the disposable type,
replace dirty with the same type and size filter. If your dirty
filter is a permanent metal filter, clean as follows:
• Wash, rinse, and dry the permanent filters. Both sides
should then be sprayed with a filter adhesive as is
recommended on the adhesive container. Many
hardware stores stock spray adhesives for use with
permanent filters.
• If badly torn or uncleanable, these filters must be
replaced by equal size permanent, high velocity filters.
Throwaway filters must not be used as replacement for
permanent filters. Under normal use, permanent filters
should last for several years.
5. To reinstall the filters, first MAKE CERTAIN THE AIRFLOW
DIRECTION ARROW POINTS TOWARDS THE
FURNACE. Then insert the filters from the left side of the
blower. Starting with the right filter, push the filter into the
plenum so that the bottom of the filter rests in the filter
rack and the upper edge rests against the side of the
plenum. Repeat with the left filter (Figure 33).
6. Replace the blower door, then reconnect the electrical
power.
Depending on the installation, differing filter arrangements can
be applied. Filters can be installed in either the central return
register or a side panel external filter rack (upflow only). A media
air filter or electronic air cleaner can be used as an alternate filter.
Follow the filter sizes given in the Recommended Minimum Filter
size table to ensure proper unit performance.
To remove filters from an external filter rack in an upright upflow
installation, follow the directions provided with external filter rack
kit. To remove internal filters see Internal Filter Removal section.
Internal filters are an accessory item and are not included with
your furnace. For further details, see your distributor.
UPRIGHT FILTER REMOVAL
To remove filters from an external filter rack in an upright upflow
installation, follow the directions provided with external filter rack
kit.
Clean, wash and dry a permanent filter. When using a metal filter,
both sides should be sprayed with a dust adhesive as recomFigure 32 - Furnace Mounted Filter Rack (Counterflow)
28
INDUCED DRAFT AND CIRCULATOR BLOWER MOTORS
The bearings in the induced draft blower and circulator blower motors are permanently lubricated by the manufacturer. No further lubrication is required. Check motor windings for accumulation of dust
which may cause overheating. Clean as necessary.
FLAME SENSOR (QUALIFIED SERVICER ONLY)
Periodically during the heating season make a visual check of the
burner flames. Turn the furnace on at the thermostat. Wait a few
minutes, since any dislodged dust will alter the normal flame appearance. Flames should be stable, quiet, soft and blue with slightly
orange tips. They should not be yellow. They should extend directly
outward from the burner ports without curling downward, floating or
lifting off the ports.
Under some conditions, the fuel or air supply can create a nearly CLEANING (QUALIFIED SERVICER ONLY)
invisible coating on the flame sensor. This coating acts as an insu- 1. Shut off electric power and gas supply to the furnace.
lator causing a drop in the flame sense signal. If the flame sense 2. Remove screws securing manifold to burner bracket. Slightly
signal drops too low the furnace will not sense flame and will lock
pull manifold out and away from burner bracket. Burners will
out. The flame sensor should be carefully cleaned by a qualified
drop. Re-secure manifold to burner bracket.
servicer using emery cloth or steel wool. Following cleaning, the 3. Tilt burners to slotted side of burner bracket. Rotate burners
flame sense signal should be as indicated in the Specifications Sheet.
clockwise to remove.
4. Use bottle brush to clean burner insert and inside of burner.
5. Replace burner (opposite of removal). Ensure burners are
fully seated on burner bracket tabs and are properly aligned.
6. Turn on electric power and gas supply to the furnace.
7. Check furnace for proper operation. Refer to “Operational
Checks” section to verify burner flame characteristics.
IGNITER (QUALIFIED SERVICER ONLY)
If the igniter and the surrounding air are at about 70°F and the igniter
wires are not connected to any other electrical components, the resistance of the igniter should not exceed 200 ohms. If it does, the
igniter should be replaced.
FLUE PASSAGES (QUALIFIED SERVICER ONLY)
The heat exchanger flue passageways should be inspected at the
beginning of each heating season. If necessary, clean the passageways as outlined below.
1. Shut off electric power and gas supply to the furnace.
2. Remove burner assembly by disconnecting the gas line and
removing the manifold brackets from the partition panel.
3. Remove the flue from the induced draft blower and the
collector box from the partition panel.
4. The primary heat exchanger tubes can be cleaned using a
round wire brush attached to a length of high grade stainless
steel cable, such as drain cleanout cable. Attach a variable
speed reversible drill to the other end of the spring cable.
Slowly rotate the cable with the drill and insert it into one of
the primary heat exchanger tubes. While reversing the drill,
work the cable in and out several times to obtain sufficient
cleaning. Use a large cable for the large tube, and then repeat
the operation with a small cable for the smaller tube. Repeat
for each tube.
5. When all heat exchanger tubes have been cleaned, replace
the parts in the reverse order in which they were removed.
6. To reduce the chances of repeated fouling of the heat
exchanger, perform the steps listed in Section XII, Start-up
Procedure and Adjustment.
BURNERS
WARNING
TO PREVENT PERSONAL INJURY OR DEATH, DO NOT REMOVE ANY INTERNAL
COMPARTMENT COVERS OR ATTEMPT ANY ADJUSTMENT. ELECTRICAL
COMPONENTS ARE CONTAINED IN BOTH COMPARTMENTS. CONTACT A
XVII. BEFO
RE LEA
VIN
G AN INST
ALL
ATI
ON
BEFORE
LEAVIN
VING
INSTALL
ALLA
TIO
•
Cycle the furnace with the thermostat at least three times.
Verify cooling and fan only operation.
•
Review the Owner’s Manual with the homeowner and discuss
proper furnace operation and maintenance.
•
Leave literature packet near furnace.
XVIII. REP
AIR AND REPL
ACEMENT PAR
TS
REPAIR
REPLACEMENT
PARTS
•
When ordering any of the listed functional parts, be sure to
provide the furnace model, manufacturing, and serial numbers
with the order.
•
Although only functional parts are shown in the parts list, all
sheet metal parts, doors, etc. may be ordered by description.
•
Parts are available from your Amana® distributor.
Functional Parts ListSingle Stage Gas Valve
Natural Gas Orifice
Propane Gas Orifice
Burner
Hot Surface Igniter
Flame Sensor
Gas Manifold
Ignition Control
Blower Mounting Bracket
Pressure Switch
Pressure Switch Hose
Induced Draft Blower
Collector Box
QUALIFIED SERVICE AGENT AT ONCE IF AN ABNORMAL FLAME APPEARANCE
SHOULD DEVELOP.
29
Blower/Box Gasket
Rollout Limit Switch
Auxiliary Limit Switch
Heat Exchanger
Door Switch
Transformer
Blower Wheel
Blower Housing
Blower Cutoff
Blower Motor
Motor Mount Bracket
Capacitor
30
Troubleshooting Chart
Symptoms of Abnormal
Operation
Associated
LED Code2
• Furnace fails to operate.
• Integrated control module
diagnostic LED provides
no signal.
NONE
Fault Description(s)
• No 115 volt power to • Manual disconnect switch
furnace, or no 24 volt OFF, door switch open, or 24
volt wires improperly
power to integrated
control module.
connected or loose.
• Blown fuse or circuit • Blown fuse or circuit
breaker.
breaker.
• No signal from
thermostat.
• Furnace fails to operate.
ON
• Integrated control module
diagnostic LED is lit
CONTINUOUS
continuously.
Possible Causes
• Improper thermostat
connection or setting.
Corrective Action
• Assure 115 and 24 volt
power to furnace
integrated control module.
• Check integrated control
module fuse (3A).
Replace if necessary.
• Check for possible shorts
in 115 and 24 volt circuits.
Repair as necessary.
• Turn power OFF
prior to repair.
1
1 FLASH
• Replace integrated
control module fuse
with 3A automotive
fuse.
• Integrated control
module has an
internal fault.
• Integrated control module
has an internal fault.
• Replace bad integrated
control module.
• Turn power OFF
prior to repair.
• Read precautions
in “Electrostatic
Discharge” section
of manual.
• Furnace lockout due
to an excessive
number of ignition
“retries” (3 total) or
“recycles (5 total)1.
• Failure to establish flame.
Cause may be no gas to
burners, bad igniter or igniter
alignment, improper orifices,
or coated/oxidized or
improperly connected flame
sensor.
• Locate and correct gas
interruption.
• Replace or realign
igniter.
• Turn power OFF
prior to repair.
• Igniter is fragile,
handle with care.
• Loss of flame after establishment. Cause may be
interrupted gas supply, lazy
burner flames (improper gas
pressure or restriction in flue
or improper induced draft
blower performance.
• Check flame sense
signal. Sand sensor if
coated and/or oxidized.
• Check flue piping for
blockage, proper
length, elbows, and
termination.
• Verify proper induced
draft blower performance.
• Sand flame sensor
with emery cloth.
• See “Combustion
and Ventilation Air
Requirements” and
“Category I Venting
(Vertical Venting)”
section for details.
ON
• Furnace fails to operate.
• Integrated control module
diagnostic LED is
flashing ONE (1) flash.
Cautions and Notes
• Furnace fails to operate.
• Integrated control module
2
diagnostic LED is
flashing TWO (2) flashes. 2 FLASHES
• Pressure switch
circuit is closed.
• Induced draft blower
is not operating.
• Induced draft blower
pressure switch contacts
sticking.
• Shorts in pressure switch
circuit.
• Replace induced draft
blower pressure switch.
• Repair short.
• Turn power OFF
prior to repair.
• Replace pressure
switch with proper
replacement part.
• Induced draft blower runs
continuously with no
3
further furnace operation.
• Integrated control module 3 FLASHES
diagnostic LED is
flashing THREE (3)
flashes.
• Pressure switch
circuit not closed.
• Induced draft blower
is operating.
• Pressure switch hose
blocked, pinched or
connected improperly.
• Blocked flue or weak
induced draft blower.
• Inspect pressure
switch hose. Repair, if
necessary,
• Inspect flue for
blockage, proper
length, elbows, and
termination.
• Incorrect pressure switch
setpoint or malfunctioning
switch contacts.
• Loose or improperly
connected wiring.
• Correct pressure switch
setpoint or contact
motion.
• Tighten or correct
wiring connection.
• Turn power OFF
prior to repair.
• See “Combustion
and Ventilation Air
Requirements”
and “Category I
Venting (Vertical
Venting)” section
for details.
• Replace pressure
switch with proper
replacement part.
1
Integrated control module will automatically attempt to reset from lockout after one hour.
31
Troubleshooting Chart
Symptoms of Abnormal
Operation
• Circulator blower runs
continuously. No furnace
operation.
• Integrated control module
diagnostic LED is flashing
FOUR (4) flashes.
Associated
LED Code2
4
Fault Description(s)
• Primary or auxiliary
limit circuit is open.
4 FLASHES
• Rollout limit circuit is
open.
• Furnace fails to operate.
• Integrated control module
diagnostic LED is flashing
SIX (6) flashes.
• Induced draft blower runs
continuously. No furnace
operation.
• Integrated control module
diagnostic LED is flashing
SEVEN (7) flashes.
• Induced draft blower runs
continuously. No furnace
operation.
• Integrated control module
diagnostic LED is flashing
continuously.
C
CONTINUOUS
FLASHING
• Flame rollout.
• Misaligned burners, blocked
flue and/or air inlet pipe, or
failed induced draft blower.
• Loose or improperly
connected wiring.
Cautions and Notes
• Check filters and ductwork • Turn power OFF
for blockage. Clean filters
prior to repair.
or remove obstruction.
• See Product Data
• Check circulator blower
Bulletin for
speed and performance.
allowable rise
Correct speed or replace
range and proper
blower if necessary.
circulator speed.
• Check burners for proper
alignment.
• Check flue and air inlet
• See “Vent/Flue
piping for blockage,
Pipe” section for
proper length, elbows,
piping details.
and termination. Correct
as necessary.
• Check induced draft
• Replace pressure
blower for proper
switch with proper
performance. Replace, if
replacement part.
necessary.
• Tighten or correct wiring
connection.
• Review wiring diagram to
correct polarity.
• Flame sense
microamp signal is
low.
• Flame sensor is coated/
oxidized.
• Flame sensor incorrectly
positioned in burner flame.
• Lazy burner flame due to
improper gas pressure or
combustion air.
• Sand flame sensor is
coated/oxidized.
• Inspect for proper sensor
alignment.
• Check inlet air piping for
blockage, proper length,
elbows, and termination.
• Compare current gas
pressure to rating plate
info. Adjust as needed.
• Turn power OFF
prior to repair.
• Sand flame
sensor with emery
clot.
• See “Vent/Flue
Pipe” section for
piping details.
• See rating plate
for proper gas
pressure.
• Flame sensed with
no call for heat.
• Short to ground in flame
sense circuit.
• Correct short at flame
sensor or in flame
sensor wiring.
• Check for lingering
flame
• Verify proper operation
of gas valve
• Turn power OFF
prior to repair.
• Polarity of 115 volt
power is reversed.
7
7 FLASHES
• Insufficient conditioned air
over the heat exchanger.
Blocked filters, restrictive
ductwork, improper
circulator blower speed, or
failed circulator blower.
Corrective Action
• Polarity of 115 volt AC power
to furnace or integrated
control module is reversed.
• Poor unit ground.
6
6 FLASHES
Possible Causes
• Lingering burner flame.
• Slow closing gas valve
32
• Turn power OFF
prior to repair.
• Verify proper ground.
Correct if necessary.
• Check and correct wiring.
GCID WIRIN
G DIAGRA
M
WIRING
DIAGRAM
INTEGRATED CONTROL MODULE
OR-10
TR (6)
GY-8
GND
GND (8)
24 VAC
40 VA
TRANSFORMER
115 VAC
G
R
W
C
BLOWER
COMPARTMENT
DOOR SWITCH
(OPEN WHEN
DOOR OPEN)
BK-31
WH-32
DIAGNOSTIC
LED
2
3
OR-10
5
6
GY-8
7
8
9
10
11
12
BK-4
1
4
BK-1
BU-14
24V THERMOSTAT CONNECTIONS
24V THERMOSTAT
CONNECTIONS
Y
MVC (9)
BR-13
GAS
VALVE
MV (12)
C
C
NO
FRONT COVER
PRESSURE SWITCH
ID.BLOWER
PRESSURE
SWITCH
C
G
NO
PS (10)
TO
MICRO
Y
HLI (7)
W
HLO (1)
R
MANUAL RESET
AUXILIARY
LIMIT CONTROL
AUTORESET
PRIMARY
LIMIT
CONTROL
RO2 (11)
GN
GY-12
RO1 (5)
INTEGRATED
CONTROL
MODULE
OR-15
YL-20
OR-22
LINE-N
WH-5
YL-20
BR-13
BU-14
BU-27
HUMIDIFIER
HUM-N
COOL-H
CO
O
H
EAC-H
JUNCTION BOX
AUTORESET PRIMARY
LIMIT CONTROL
VT-28
WARNING:
DISCONNECT POWER
BEFORE SERVICING.
WIRING TO UNIT
MUST BE PROPERLY
POLARIZED AND
GROUNDED.
BU-27
GN
GND
WH-33
JUCTION
BOX
GY-12
BR-13
GND
WARNING:DISCONNECT POWER BEFORE
SERVICING.WIRING TO UNIT MUST BE
PROPERLY POLARIZED AND GROUNDED.
NO
NO
C
WH
-5
N
OR
-22
2 CIRCUIT
CONNECTOR
GND
C
HOT
SURFACE
IGNITER
GY-34
FLAME
SENSOR
GAS VALVE
0
STEADY ON = REPLACE CONTROL
1
1 FLASH = SYSTEM LOCKOUT (RETRIES/RECYCLES EXCEEDED)
2
2 FLASHES = PRESSURE SWITCH STUCK CLOSED
BK
-1
ID. BLOWER
PRESSURE SWITCH
LOW VOLTAGE (24V)
LOW VOLTAGE FIELD
HI VOLTAGE (115V)
3 FLASHES = PRESSURE SWITCH STUCK OPEN
4
4 FLASHES = OPEN PRIMARY OR AUXILIARY LIMIT
5
5 FLASHES = OPEN ROLLOUT LIMIT
6
6 FLASHES = 115V AC POWER REVERSED OR POOR UNIT GROUND
HI VOLTAGE FIELD
JUNCTION
TERMINAL
INTERNAL TO
INTEGRATED CONTROL
7 FLASHES = LOW FLAME SENSE SIGNAL
CONTINUOUS FLASHES = UNANTICIPATED FLAME PRESENT
PK PINK
COLOR CODES:
YL YELLOW
BR BROWN
OR ORANGE
WH WHITE
VT VIOLET
BU BLUE
GN GREEN
GY GRAY
BK BLACK
RD RED
20479301 REV.00
L
DISCONNECT
PLUG CONNECTION
NOTES:
1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0.7 AMPS.
2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING.
3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE
REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE
RATING OF AT LEAST 105°C. USE COPPER CONDUCTORS ONLY.
4. IF HEATING AND COOLING BLOWER SPEEDS ARE NOT THE SAME DISCARD JUMPER
BEFORE CONNECTING BLOWER LEADS. UNUSED BLOWER LEADS MUST BE PLACED ON
"PARK" TERMINALS OF INTEGRATED CONTROL OR TAPED.
5. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C. AND LOCAL CODES.
33
EQUIPMENT GND
FIELD GND
FIELD SPLICE
SWITCH (TEMP.)
IGNITER
SWITCH (PRESS.)
OVERCURRENT
PROT. DEVICE
TO115VAC/1Ø/60HZ
OVERCURRENTPROTECTION
POWERSUPPLYWITH
DEVICE
FRONT
COVER
PRESSURE
SWITCH
BU
-14
L
TO 115VAC/1Ø /60 HZ POWER SUPPLY WITH
OVERCURRENT PROTECTION DEVICE
YL-20
RD-11
PK-17
DISCONNECT
N
INDUCED
DRAFT
BLOWER
MANUAL RESET ROLLOUT LIMIT CONTROL(S)
( SINGLE CONTROL ON 45 KBTU)
OR-15
7
EAC-N
LINE-N
BLOWER
COMPARTMENT
DOOR
SWITCH
WH-7
WH
C
ELECTRONIC
AIR CLEANER
LINE-H
BK
3
CIR-N
T
EA
HEAT-H
BURNER COMPARTMENT
RD
-2
L
CIRCULATOR
BLOWER
BLOWER COMPARTMENT
GND
ID
BLWR
IND
OR-22
VT
-28
INTEGRATED CONTROL MODULE
GY-12
OR-15
PK
-30
CAPACITOR
RD-11
WH-7
MANUAL
RESET
AUXILIARY
LIMIT
BK
-3
HUM-H
INTEGRATED CONTROL MODULE
GN
RD
-2
CIRCULATOR
BLOWER
BR
WH-33
BR
HOT SURFACE
IGNITER
IGN
WH
BU (MED)
BK (HI)
XFMR-N
FP (2)
BK-4
RD (LOW)
OR (MED LOW)
115 VAC
FLAME SENSOR
PK-30
CONNECTOR
9 CIRCUIT
WH
33
LINE-H
SEE
NOTE 4
XFMR-H
CIRC-N
1
HEAT-H
GND
24 VAC
40 VA
TRANSFORMER
115 VAC NEUTRAL
TERMINALS
XFMR-H
2
115 VAC HOT AND PARK TERMINALS
TH (3)
PK-30
GY-8
OR-10
XFMR-N
COOL-H
MANUAL RESET ROLLOUT
LIMIT CONTROL(S)
(SINGLE CONTROL ON 45 KBTU)
BU-27
RD-11
GUID/GUIE WIRIN
G DIAGRA
M
WIRING
DIAGRAM
GAS VALVE
PRESSURE
SWITCH
C
JUNCTION BOX
YL-20
INDUCED DRAFT
P3
WH
-5
NO
OR-22
GY-12
C2
WARNING: DISCONNECT
POWER BEFORE SERVICING.
WIRING TO UNITMUST BE
PROPERLY POLARIZED
AND GROUNDED.
GND
BR-13
M1
BLOWER
N
BK
-1
RD-11
TO 115VAC/ 1Ø /60 HZ
POWER SUPPLY WITH
OVERCURRENT PROTECTION
DEVICE
L
DISCONNECT
PK-17
BK
MANUAL RESET
ROLLOUT LIMIT
CONTROL(S)
(SINGLE CONTROL
ON 45K BTU)
GND
WH
OR-15
FLAME
SENSOR
TO 115VAC/ 1Ø /60 HZ POWER SUPPLY WITH
OVERCURRENT PROTECTION DEVICE
HOT
SURFACE
IGNITER
L
WH-33
BU-14
WH
-7
GN
RD-2
BU-27
AUTO RESET PRIMARY
LIMIT CONTROL
DISCONNECT
DOOR
SWITCH
JUNCTION BOX
VT-28
BURNER COMPARTMENT
LINE-H
LINE-N
ID
BLWR
IND
BLOWER COMPARTMENT
MANUAL RESET
AUXILLARY LIMIT
BR
GND
BR
CAPACITOR
WH-7
BU (MED)
BK (HI)
BK-4
GND
WH
BK-4
WH-5
GY-8
OR-10
OR-10
SEE
NOTE 4
LINE -H
WH-5
COOL- H
GY-8
WH-33
HEAT-H
115 VAC HOT AND PA RK TERMINALS
XFMR-H
EAC-H
EAC-N
XFMR-N
115 VAC NE UTRAL
TERMINALS
115 V HUMIDIFIER AND
ELECTRONIC AIR CLEANER
FIELD CONNNECTIONS
DOOR SWITCH (OPEN WHEN DOOR IS OPEN)
5 PIN
CONNECTOR
WH-33
INTEGRATED CONTROL MODULE
OR (MED LOW)
HEAT-H
HE
AT
COOL-H
HOT SURFACE
IGNITER
FP (2)
FLAME SENSOR
XFMR-H
OPTIONAL
BLOWER HEAT
OFF DELAY SELECTOR
(SECONDS)
PIN JUMPER
DIP SWITCHES
40 VA
TRANSFORMER
60
*
180
OFF
ON
ON
OFF
120
OFF
OFF
180
10
90
OR
60
120
*
90
*
AS SHIPPED FROM FACTORY
DIAGNOSTIC
LED
7
12
11
9
8
4
5
6
1
2
3
OR-22
(OPTIONAL)
FUSE 3 A
OR-15
RD-11
GY-12
BR-13
GY-8
OR-10
BU-14
WH-32
BK-31
FUS E
W
R
G
C
24VAC
3A
HLO (1)
TO
MICRO
G
OR-10
LOW VOLTAGE (24V)
2
2 FLASHES = PRESSURE SWITCH STUCK CLOSED
4 FLASHES = OPEN PRIMARY OR AUXILIARY LIMIT
5
5 FLASHES = OPEN ROLLOUT LIMIT
6
6 FLASHES = 115V AC POWER REVERSED OR POOR UNIT GROUND
7
7 FLASHES = LOW FLAME SENSE SIGNAL
C
CONTINUOUS FLASHES = UNANTICIPATED FLAME PRESENT
WH WHITE
BU BLUE
GN GREEN
GY GRAY
BK BLACK
RD RED
20302001 REV.01
GND
INTEGRATED CONTROL MODULE
LOW VOLTAGE FIELD
SYSTEM LOCKOUT (RETRIES/RECYCLES EXCEEDED)
3 FLASHES = PRESSURE SWITCH STUCK OPEN
GND (8)
TR (6)
STEADY ON = REPLACE CONTROL
OR ORANGE
VT VIOLET
M1
GY-8
1 FLASH =
3
GAS
VALVE
P3
C
4
PRESSURE
SWITCH
C2
MVC (9)
1
BR BROWN
C
MV (12)
0
PK PINK
PS (10)
NO
24 VAC
40 VA
TRANSFORMER
COLOR CODES:
YL YELLOW
HLI (7)
115 VAC
24V THERMOSTAT
CONNECTIONS
AUTO RESET
PRIMARY
LIMIT CONTROL
MANUAL RESET
AUXILIARY
LIMIT CONTROL
W
Y
MANUAL RESET ROLLOUT
LIMIT CONTROL
RO1 (5)
RO2 (11)
R
YL-20
(OPTIONAL)
Y
24 VAC
TH (3)
24V THERMOSTAT CONNECTIONS
ON
ON
GN
XFMR-N
115 VAC
CIRC-N
BK-3
RD-2
PK-30E
BU-27
CIR-N
IGN
HUM- N
INTEGRATED
CONTROL
MODULE
INDOOR
AIR
CIRCULATION
BLOWER
OL
CO
LINE-N
HUM- H
EAC-N
ELECTRONIC
AIR CLEANER
INTEGRATED CONTROL MODULE
EAC-H
PK-30
HUM-N
HUMIDIFIER
HUM-H
RD (LOW)
INDOOR
AIR
CIRCULATION
BLOWER
N
BEFORE SERVICING.
WIRING TO UNIT
MUST BE
PROPERLY
POLARIZED
AND GROUNDED.
GND
BK
-3
GND
WARNING:
HI VOLTAGE (115V)
EQUIPMENT GND
FIELD GND
FIELD SPLICE
HI VOLTAGE FIELD
JUNCTION
TERMINAL
IGNITER
INTERNAL TO
INTEGRATED CONTROL
SWITCH (PRESS.)
PLUG CONNECTION
NOTES:
1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0.7 AMPS.
2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING.
3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE
REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE
RATING OF AT LEAST 105
4. IF HEATING AND COOLING BLOWER SPEEDS ARE NOT THE SAME DISCARD JUMPER
BEFORE CONNECTING BLOWER LEADS. UNUSED BLOWER LEADS MUST BE PLACED ON
"PARK" TERMINALS OF INTEGRATED CONTROL OR TAPED.
5. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C. AND LOCAL CODES.
6. BLOWER HEAT OFF DELAY IS FIXED AT 90 SECONDS WITHOUT OPTIONAL BLOWER HEAT OFF
DELAY SELECTOR.
34
SWITCH (TEMP.)
OVERCURRENT
PROT. DEVICE
Minimum Filter Area (in2)
[Permanent based on 600 ft/min filter face velocity - Disposable based on 600 ft/min filter face velocity]
GUID Permanent Minimum Filter Area (in2)
GUID Disposable Minimum Filter Area (in2)
COOLING AIRFLOW REQUIREMENT (CFM)
Model
600
800
1000
1200
1400
1600
2000
Model
600
800
1000
1200
1400
1600
2000
045__30
168*
192
240
288
---
---
---
045__30
335*
384
480
576
---
---
---
070__30
251*
251*
251*
288
'---
'---
'---
070__30
503*
503*
503*
576
'---
'---
'---
070__40
---
---
251*
288
336
384
---
070__40
---
---
503*
576
672
768
---
090__30
'305*
'305*
'305*
'305*
'---
'---
'---
090__30
'610*
'610*
'610*
'610*
'---
'---
'---
090__50
---
---
---
305*
336
384
480
090__50
---
---
---
610*
672
768
960
115__50
---
---
---
419*
419*
419*
480
115__50
---
---
---
838*
762*
768
960
Input__Airflow
Input__Airflow
COOLING AIRFLOW REQUIREMENT (CFM)
GCID Permanent Minimum Filter Area (in2)
GCID Disposable Minimum Filter Area (in2)
Input_Airflow
COOLING AIRFLOW REQUIREMENT (CFM)
COOLING AIRFLOW REQUIREMENT (CFM)
Model
600
800
1000
1200
1400
1600
2000
Model
600
800
1000
1200
1400
1600
2000
070__30
210*
210*
240
288
'---
'---
---
070__30
419*
419*
480
576
'---
'---
---
090__50
---
---
---
288
336*
384
480
090__50
---
---
---
576
672
768
960
140__50
---
---
---
419*
419*
419*
480
140__50
---
---
699*
699*
699*
768
'---
GUIE Permanent Minimum Filter Area (in2)
GUIE Disposable Minimum Filter Area (in2)
COOLING AIRFLOW REQUIREMENT (CFM)
Model
600
800
1000
1200
1400
1600
2000
Model
600
800
1000
1200
1400
1600
2000
045__30
168*
192
240
288
---
---
---
045__30
335*
384
480
576
---
---
---
070__40
---
---
251*
288
336
384
---
070__40
---
---
503*
576
672
768
---
090__40
---
---
---
305*
336
384
480
090__40
610*
610*
---
610*
672
768
960
090__50
---
---
---
305*
336
384
480
090__50
---
---
---
610*
672
768
960
115__50
---
---
---
381*
381*
384
480
115__50
---
---
---
762*
762*
768
960
Input__Airflow
Input__Airflow
COOLING AIRFLOW REQUIREMENT (CFM)
[Based on 300 ft/min filter face velocity]
[Based on 600 ft/min filter face velocity]
*Minimum filter area dictated by heating airflow requirement.
35
36
2004 Goodman Company, L.P.
Effective: March 2004