VIlI. Circulating Air and Filters ................................................ 18
IX. Sequence of Operation (Integrated Ignition Control) .... 21
X. Start-Up, Adjustments, and Checks ................................ 2 1
XI. Maintenance ....................................................................... 27
Affix this manual, Specification Sheet and Users
Information Manual adjacent to the furnace.
Amana Forced Air Central Furnace Design Complies With Requirements
Embodied in The American National Standard / National Standard of Canada
Shown Below.
ANSI Z21.47•CAN/CGA-2.3 Central Furnaces
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.
October 1997(1)
Fayetteville, TN 37334
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 should
not supersede existing practices but should be
considered as supplemental information.
Amana
10759818
WARNING
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 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.
WARNING
Should overheating occur or the gas supply
fail to shut off, turn off the manual gas
control valve to the furnace before shutting
off the electrical supply.
To The Owner
It is important that you fill out the owner’s registration card
and mail it today. This will assist Amana 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 place, so you can
find it, if necessary.
If additional operating instructions are required, call the
dealer where the purchase was made.
To The Installer
Before installing this unit, please read this manual to
familiarize yourself on the specific items which must be
adhered to, such as maximum external static pressure to
unit, air temperature rise, minimum or maximum CFM,
motor speed connections, and venting. These furnaces
are designed for Category I venting only.
WARNING
To prevent possible death or personal injury
due to asphyxiation, Amana NonCondensing Gas Fired Warm Air Furnaces
must be Category I vented. Do not vent any
of these furnaces using Category III venting.
Keep this literature in a safe place for future
reference.
2
I. Safety and Unit Location
WARNING
To prevent personal injury or death due to
improper installation, adjustment,
alteration, service, or, maintenance refer
to this manual or 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.
WARNING
To prevent possible death, personal injury
or equipment damage due to fire, the
following points must be observed when
installing the unit.
WARNING
To prevent possible death, personal injury
or property damage due to electrical shock,
the furnace must be located to protect the
electrical components from water.
NOTE: This unit must not be used as a “construction
heater” during the finishing phases of construction on a
new structure. This type of use may result in premature
failure of the unit due to extremely low return air temperatures and exposure to corrosive or very dirty atmospheres.
WARNING
To prevent possible death, personal injury
or property damage, do not install this unit
in a mobile home, trailer or recreational
vehicle.
ADDITIONAL SAFETY CONSIDERATIONS
• This furnace is approved for Category I Venting only.
• When the furnace is heating, the temperature of the
return air entering the furnace must be between 55°F
and 100°F.
• Do not install the furnace where the combustion air is
exposed to the following substances: permanent wave
solutions, chlorinated waxes or cleaners, chlorine
based swimming pool chemicals, water softening
chemicals, deicing salts or chemicals, carbon tetrachloride, halogen type refrigerants, cleaning solutions
(such as perchloroethylene), printing inks, paint removers, varnishes, hydrochloric acid, cements and
glues, antistatic fabric softeners for clothes dryers,
and masonry acid washing materials. If the furnace is
installed near an area which will be frequently contaminated by these substances, the furnace should
be sealed from this area so that little contaminated air
can reach the furnace. The furnace must still have an
adequate supply of combustion air, either from a
nearby uncontaminated room or from outdoors. For
details, see “AIR REQUIREMENTS” Section III.
• 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.
• When installed horizontally, the furnace must be installed with the access doors vertical so that the
burners fire horizontally into the heat exchanger. The
unit cannot be installed with the access doors on top
or bottom. (See Specification Sheet)
• Allow clearances from the enclosure as shown on
Specification Sheet for fire protection, proper operation, and service access. These clearances must be
permanently maintained. The combustion and ventilating air openings in the front and top panels of the
furnace must never be obstructed.
• This furnace shall not be connected to a chimney flue
serving a separate appliance designed to burn solid
fuel.
• When the furnace is used in connection with a cooling
unit, the furnace must be upstream of, or in parallel
with, the cooling unit. For details see Section VIlI.
• 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,
insure 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.
installation over a combustible floor becomes necessary, use an accessory subbase as shown on the
Specification Sheet. 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.)
• 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.
ADDITIONAL LOCATION CONSIDERATIONS
• The furnace should be as centralized as is practical
with respect to the air distribution system.
• Do not install the furnace directly on carpeting, tile, or
combustible material other than wood flooring.
• When suspending the furnace from rafters or joists,
use 3/8" threaded rod and 2” x 2” x 3/8” angle as shown
on the Specification Sheet. The length of the rod will
depend on the application and clearance necessary.
If
3
• When installed in a residential garage, the furnace
must be positioned so the burners and ignition source
are located not less than 18 inches (457 mm) above the
floor and protected from physical damage by vehicles.
III. Air Requirements
COMBUSTION AND VENTILATION AIR
II. General Information
WARNING
Possible death, personal injury or property
damage due to fire, explosion, smoke, soot,
condensation, electrical shock or carbon
monoxide may result from improper
installation, repair, operation, or
maintenance on this product.
To ensure the furnace operates safely and efficiently, it
must be installed, operated and maintained in accordance
with these installation and operating instructions, all local
building codes and ordinances, or, in their absence, with
the latest edition of the National Fuel Gas Code, ANSI
Z223.1*, and/or CAN/CGA B149 Installation Codes.
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.
*Obtain from: American National Standards Institute 1430
Broadway New York, NY 10018
TRANSPORTATION DAMAGE
Check the furnace for any shipping damage. If damage is
found, contact the company where the furnace was purchased.
While checking for transportation damage, remove all packaging material and dispose or recycle according to local
codes.
THERMOSTAT LOCATION
Locate the thermostat about 5 feet high on a vibration-free
inside wall, in an area having good air circulation
Do not install the thermostat where it may be affected by:
• drafts or dead spots behind door, in corners or under
cabinets.
• hot or cold air from ducts.
• radiant heat from sun or appliances.
• concealed pipes and chimneys.
• unheated (uncooled) areas behind the thermostat,
such as an outside wall.
Consult the instructions packaged with the thermostat for
mounting instructions.
WARNING
Possible death, personal injury or property
damage may occur if the furnace and other
fuel-burning appliances are not provided
with enough fresh air for proper combustion
and ventilation of flue gases. Most homes
require outside air to be supplied into the
furnace area.
Improved construction and additional insulation in buildings has reduced the heat loss, making these buildings
much tighter around doors and windows so air infiltration is
minimal. This creates a problem supplying combustion and
ventilation air for gas fired and other fuel burning appliances. Use of appliances pulling air out of the house
(clothes dryers, exhaust fans, fireplaces, etc.) increases
this problem causing appliances to starve for air.
This furnace must use indoor air for combustion. It cannot
be installed as a direct vent (i.e., sealed combustion)
furnace. The burner box is present only to help reduce
sound transmission from the burners to the occupied space.
AIR REQUIREMENTS
Most homes will require outside air 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 NFPA54/ANSI Z223.1 Section
5.3.
5.3.1 General:
(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 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.
(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.
4
(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.
(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.
(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.
(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.
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 5.3.3b or 5.3.4.
Space, Unconfined. 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.
5.3.3 Equipment Located in Confined Spaces: (a)
from Inside the Building:
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. (Figure 1 )
The confined space shall be
All Air
Figure 1
Equipment Located in Confined Spaces; All
Air from Inside Building. See 5.3.3-a
.
(b)
All Air from Outdoors:
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.
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 (Figure 2).
The confined space shall be
Figure 2
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
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 (See Figure 3).
5
Figure 3
Equipment Located in Confined Spaces; All
Air from Outdoors Through Ventilated Attic.
See 5.3.3-b.
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.
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.
IV. Category I Venting (Vertical Venting)
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. (Figure 4)
*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.
Figure 4
Equipment Located in Confined Spaces; All
Air from Outdoors. See 5.3.3-b.
4. When ducts are used, they shall be of the same crosssectional 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.
5.3.4 Specially Engineered Installations:
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.
WARNING
To prevent possible death or personal injury
due to asphyxiation, Amana NonCondensing Gas Fired Warm Air Furnaces
must be Category I vented. Do not vent any
of these furnaces 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 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).
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/CGA B149.1 and .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 death or personal injury
due to asphyxiation, common venting with
other manufacturer’s induced draft
appliances is not allowed.
Common venting with specific Amana 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 Amana directly for more information.
6
The minimum vent diameter for the Category I venting
system is as shown below:
MINIMUM VENT DIAMETER
MODELGUI*GCI*
453 Inch4 Inch
704 Inch4 Inch
904 Inch4 Inch
1155 Inch5 Inch
1405 Inch5 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
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, ANSI Z223.1, or the CAN/CGA B149 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 re-
maining 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 Code, 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, ANSI Z223.1.
Upflow or Horizontal units
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 5). For horizontal installations, a 4-inch single wall
pipe can be used to extend the induced draft blower outlet
, the venting system may be too
are shipped with the induced
1/2” beyond the furnace cabinet. Vent the furnace in
accordance with the National Fuel Gas Code, NFPA54/
ANSI Z223.1 - latest edition. In Canada, vent the furnace
in accordance with the National Standard of Canada, CAN/
CGA B149 - latest editions and amendments.
Figure 5
Upflow Rotated Induced Draft Blower
Counterflow units
blower discharging from the top of the furnace. (“Top” as
viewed for an counterflow installation.) The induced draft
blower can be rotated 90 degrees counterclockwise for
Category I venting, with the airflow horizontal right to left
(Figure 6). For horizontal installations, a 3-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, NFPA54/ANSI
Z223.1 - latest edition. In Canada, vent the furnace in
accordance with the National Standard of Canada, CAN/
CGA B149 - latest editions and amendments.
Supply
Air
are shipped with the induced draft
Vent
Return
Air
Figure 6
Counterflow Rotated Induced Draft Blower
To rotate the induced draft blower counterclockwise proceed as follows:
1. Disconnect electrical power from furnace.
WARNING
To prevent death or personal injury due to
electrical shock, disconnect electrical
power.
2. Remove the round cutout from the side of the furnace.
Note: The assembly, starting from the outside, is
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 Vl for instructions.
V. Masonry Chimneys
WARNING
Possibility of property damage, personal
injury, or death - Damaging condensation
can occur inside masonry chimneys when
a single fan assisted Category I appliance
(80% AFUE furnace) is vented without
adequate dilution air. Do not connect an
80% furnace to a masonry chimney unless
the furnace is common vented with a draft
hood equipped appliance, or the chimney
is lined with a metal liner or Type B metal
vent. All installations using Masonry
chimneys must be sized in accordance with
the appropriate Venting 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
Clay Tile Size Generally
12" x 12" (24" Len
th)
Wash
Roof Line
Clay Tile Size: 8" x 8" x12"
(Each x 24" Len
th)
WARNING
To prevent death or serious illness to
building occupants due to flue products
leaking into the building, proper installation
of gaskets and screws is essential for
providing a gas tight seal between the
partition panel and the induced draft blower.
Attic Floor
1/2" to 1" Air Space
Second Floor
Throat
Clean Out
Damper
Breech
F.A.F. Vent
Connector
Fan Assisted
Forced Air
Furnace
First Floor
Natural Draft
Water Heater
Figure 8
Typical Multiple Flue Clay Tile Chimney
8
Water Heater
Vent Connector
Basement Floor
CHECKLIST SUMMARY
This checklist serves as a summary of the items to be
checked before venting an Air Command 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.
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, page 12.
Proper Chimney
Termination?
(Check 1)
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)
Yes
Line, terminate with
No
No
No
No
listed vent cap
(Fix 1)
Change venting
arrangements
(Fix 2)
Rebuild crown
(Fix 3)
and /or Reline
(Fix 4)
Reline
(Fix 4)
2' Min.
Ridge
10' or Less
2' Min.
Wall or
Parapet
Chimney
10' or Less
2' Min.
Chimney
3' Min.
3' Min.
Liner in good
condition?
(Check 5)
Yes
Dilution air
available?
(Check 6)
Yes
Complete the
installation.
(Check 7)
No
No
Reline
(Fix 4)
Reline
(Fix 4)
Figure 9
Termination 10 Feet Or Less From Ridge,
Wall or Parapet
9
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