Amana GUC Series Specifications

GUC*, GUX*, GUD*, GDC*
Gas Fired Warm Air
Furnace
User's Informational
Manual
Affix this manual, Installation Instructions and Specification Sheet adjacent to the furnace.
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION
WARNING
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.
To avoid death, personal injury or property
damage, do not use this furnace if any part
of the furnace has been under water. Immediately call a qualified service technician to
inspect the furnace and to replace any part
of the control system and any gas control
having been under water.
Important Note 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. If the registration card cannot be located, please call 1-800-843-0304 to register the furnace.
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.
—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.
THE INSTALLATION AND SERVICING OF THIS EQUIPMENT MUST BE PERFORMED BY QUALIFIED,
EXPERIENCED TECHNICIANS ONLY.
Due to policy of continual product improvement, the right is reserved to change specifications and design without notice.
Effective: February 1996 (1)
10318813
Table of Contents
I. General Information ................................................................................................. 3
Unit Location ................................................................................................................................... 3
Unit Installation ............................................................................................................................... 3
Unit Clearances to Combustible Surfaces (Upflow and Counterflow Installations) ................ 3
Unit Clearances to Combustible Surfaces (Horizontal Installations - GDC Only) .................. 4
Propane Furnaces Only ................................................................................................................. 5
Air Requirements ............................................................................................................................ 4
Combustion Air (GUC, GUX, GUD and GDC - One Pipe System) .............................................. 4
Combustion Air (GUD - Two Pipe System) ................................................................................... 5
Indoor Humidity .............................................................................................................................. 5
II. Operation ................................................................................................................. 6
Thermostat ...................................................................................................................................... 6
Electrical Components ................................................................................................................... 6
Operating Instructions ................................................................................................................... 6
Roll-Out Protection Device ............................................................................................................ 7
Auxiliary Limit Control (GDC Only) .............................................................................................. 7
Turning Off Furnace ....................................................................................................................... 8
Electronic Control Module ............................................................................................................. 8
Reset After Control Lock-Out ........................................................................................................ 8
III. Maintenance ............................................................................................................ 9
Replacing or Cleaning Filters ........................................................................................................ 9
Upflow Filters (GUC, GUX, and GUD) ........................................................................................... 9
Side Air Return ............................................................................................................................... 9
Bottom Air Return .......................................................................................................................... 10
Filter Cleaning and Replacing ....................................................................................................... 10
Counterflow Filters (GDC) ............................................................................................................. 10
Horizontal Filters (GDC) ................................................................................................................. 11
Condensate Collection and Disposal (Qualified Servicer Only) ................................................ 11
Induced Draft Motor Lubrication ................................................................................................... 11
Air Circulating Blower Motor Lubrication .................................................................................... 11
IV. Inspection of Furnace (Qualified Servicer Only) ................................................. 12
V. For More Information .............................................................................................. 12
VI. Safety Labels .......................................................................................................... 13
Amana Refrigeration, Inc.
Fayetteville, TN 37334
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.
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.
Prior to actual installation, thoroughly familiarize yourself with this 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.
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 manual should not supersede existing practices but should be considered
as supplemental information.
Remember to leave this manual with the homeowner.
2
I. General Information
WARNING
This furnace is built to provide many years of safe and dependable service, providing it is properly installed and maintained. However, abuse and/or improper use can shorten
the life of the furnace and create hazards for you, the homeowner.
To avoid personal injury or fire, minimum
clearances to combustible surfaces must be
followed.
7. Make certain the required clearances for the furnace
are always maintained. These clearances are listed on
the furnace nameplate. If any question develops, contact the installer of the furnace, or another qualified
servicer.
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.
Unit Installation
Examine the furnace installation to determine the following:
1. The flue vent pipe is physically sound and sealed. The
vent slopes upward to vent terminal so condensate drains
back toward the furnace. The vent shows no evidence
of leaking or separation at joints or fittings.
WARNING
To avoid possible equipment damage, personal injury, fire or death, the following instructions must be observed regarding unit
location, air requirements and operating procedures.
2. The return air duct connection is physically sound, sealed
to the furnace casing, and terminates outside the space
containing the furnace.
3. The physical support of the furnace is sound without
sagging, cracks, or gaps around the base so as to provide a seal between the support and the base.
Unit Location
1. The furnace area and the vicinity of any other gas appliances must be kept clear and free of combustible materials, gasoline, and other flammable vapors and liquids.
Also, do not store or use flammable items such as paint,
varnish, or lacquer in the area.
4. There are no obvious signs of deterioration of the furnace.
5. Check the burner flames for adjustment.
Unit Clearances to Combustible Surfaces (Upflow and
Counterflow Installations)
NOTE: GDC models require special subbase when installed
on combustible (wood only) floor (CFSB16, 20 or 24).
2. Do not store or use chlorine or fluorine products
(bleaches, cements, strippers, aerosols) near the unit.
They can corrode the heat exchanger.
3. Do not use the furnace closet as storage for brooms,
mops, brushes and oily rags or cloths. The area must be
kept clear, clean and free of lint. Furnace must be kept
free and clear of exposed or loose insulation materials
in the area of installation. Examine the furnace area when
the furnace or additional insulation is added since some
insulation materials may be combustible.
0"
A 1" Top Clearance
is also required
4. Make sure the furnace is always connected to an approved vent, in good condition, to carry combustion products outdoors.
1"
5. Familiarize yourself with the controls that shut off the
gas and electrical power to the furnace. If the furnace is
to be shut down at the end of the heating season, turn
off both the gas and electrical power. For safety, always
turn the gas and electrical power off before performing
service or maintenance on the furnace.
1"
3"
Service Area
36"
Free Access
To Furnace
Figure 1
Upflow and Counterflow Clearances
(Top View)
6. Establish a regular maintenance schedule to insure efficient and safe operation of the furnace. The furnace
should be checked at the beginning of each heating and
cooling season by a qualified service technician.
3
Unit Clearances to Combustible Surfaces (Horizontal
Installations - GDC Only)
WARNING
Death or personal injury from asphyxiation
can result from exposure to carbon monoxide.
A six inch top clearance is also required.
0"
0"
Carbon monoxide or “CO” is a colorless and odorless gas
produced when fuel is not burned completely or when the
flame does not receive sufficient oxygen.
6" 6"
12"
12"
Alcove
Left Air Discharge
Be aware of these air starvation signals which indicate
conditions that may result in carbon monoxide or that
carbon monoxide may be present:
Alcove
1. Headaches-Nausea-Dizziness.
Right Air Discharge
2. Excessive humidity-heavily frosted windows or a moist
“clammy” feeling in the home.
Figure 2
Horizontal Clearances (GDC)
3. Smoke from a fireplace won’t draw up the chimney.
Air Requirements
4. Flue gases won’t draw up the appliance vent pipe.
WARNING
WARNING
To avoid death, personal injury or property
damage, enough fresh air for proper combustion and ventilation of flue gases must
be provided to this furnace. Most homes require outside air to be supplied into the furnace area.
It is vitally important that the furnace have
proper venting. GUC, GUX, GUD or GDC
model furnaces must never be common
vented with another gas fired appliance. Any
alteration to any venting system must be in
accordance with local and national codes,
and the manufacturer's instructions.
Improved construction and additional insulation in homes
have reduced the heat loss and made these homes much
tighter around doors and windows so that air infiltration is
minimal. This creates a problem to supply ventilation and/or
combustion air for gas fired or other fuel burning appliances.
Any use of appliances that pull air out of the house (clothes
dryers, exhaust fans, fireplaces, etc.) increases this problem and appliances could be starving for air.
Combustion Air (GUC, GUX, GUD and GDC - One Pipe
System)
Normally the air for combustion and ventilation can be obtained from the surrounding unconfined space or louvered
closet door.
• When a furnace is installed in a closet and the closet
door is louvered DO NOT OBSTRUCT LOUVERS. Louvers must be open and clear to provide combustion air
to the furnace.
If fuel-burning appliances are starved for air, the flue gases
which these appliances produce as they operate may not
vent outdoors properly, but remain in the home instead.
These flue gases may include carbon monoxide.
• When the furnace is installed in a confined space within
a home and the air for combustion and ventilation enters the space through ducts from the outside...be sure
to check the entering and outlet (grilled) openings so
that they are always clear and clean.
IMPORTANT NOTE: Do not partition off a small area around
the furnace including a non louvered door. This could obstruct the combustion air from reaching the furnace.
4
The following table shows the recommended maximum indoor humidity in relationship to the outdoor temperatures.
Combustion Air (GUD - Two Pipe System)
NOTE: To insure proper operation of the furnace, both combustion air and flue pipes must never become obstructed.
Temperature
(° F.)
+20°
+10°
0°
-10°
-20°
NOTE: The air for combustion and ventilation must not come
from a corrosive atmosphere.
WARNING
To prevent possible death or personal injury due to asphyxiation, Amana Condensing Gas Fired Warm Air Furnaces must be
Category IV vented.
Humidity
35%
30%
25%
20%
15%
Table 1
Propane Furnaces Only
Category IV venting must be gas and water tight. For information on Category IV venting, refer to the installation instructions available from the installing dealer, distributor, or
directly from Amana.
WARNING
To avoid death, personal injury or property
damage due to explosion or fire, install a gas
detecting warning device. Since the odorant in propane gas can be reduced by iron
oxide (rust), a gas detecting warning device
is the only reliable method to detect propane gas leaks.
The vent system must slope toward the furnace for drainage
of condensate. Provision must be made to drain the condensate and protect the condensate drain trap and drain line from
freezing conditions.
WARNING
To prevent possible death or personal injury due to asphyxiation, common venting
with other induced draft appliances is not
allowed. Carefully read and follow all instructions given in this section.
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.
NOTE: The louvers in the furnace door and top must never
be obstructed. They must remain open so air can flow
through the furnace and cool internal components.
• Since propane gas is heavier than air, any
leaking gas can settle in any low areas or
confined spaces.
Indoor Humidity
Relative humidity is the amount of water vapor in the air
relative to the amount the air can hold at the same temperature. Example: At 40% relative humidity, the air could hold
2 1/2 times as much moisture (2.5 x 40 = 100%) before
becoming saturated.
• Propane gas odorant may fade, making
the gas undetectable except with a warning device.
The colder the air; the less moisture it can hold. As air is
warmed, its ability to hold moisture is increased.
An undetected gas leak will create a danger
of explosion or fire. If the presence of gas is
suspected, follow the instructions on the
cover of this manual. Failure to do so could
result in SERIOUS PERSONAL INJURY OR
DEATH.
Example: A winter day, outdoor temperature 10°F, and relative humidity of 70%. If that air enters a home and is warmed
to 72°F the relative humidity will drop to 6% (very dry) if no
more moisture is added.
Relative humidity is important to your health and home as
proper humidification helps reduce respiratory difficulties and
helps improve the indoor air quality.
A good relative humidity is one just high enough to barely
start condensation along the lower edges or lower corners of
the windows. More than that can be damaging.
Frequent fogging or excessive condensation on inside windows indicates the indoor humidity level is too high for outdoor weather conditions. Damage to the building may result
if the condition persists. (Condensation on inside of storm
windows indicates loose inside windows. Adding weatherstripping to tighten inside windows usually corrects this problem.)
5
II. Operation
Electrical Components
This furnace is equipped with an electronic ignition device
which lights the burners. It also has a induced draft blower
to exhaust combustion products.
Thermostat
There are many types and styles of thermostats but the operation is usually similar. BE SURE TO BECOME FAMILIAR WITH YOUR THERMOSTAT. The simplest type of thermostat only starts and stops the furnace to maintain the
proper room temperature. The most widely used types will
control both heating and cooling functions and will have a
Fan Switch with Auto and ON settings. On Auto, the circulating air blower will cycle on/off with the furnace but if
switched to ON it will run constantly whether or not the furnace is on.
Keep both doors in place except for inspection and maintenance. An interlock switch prevents furnace operation if the
blower door is not in place.
Do not use this furnace if any part has been under water.
Immediately call a qualified servicer to inspect the furnace
and to replace any part of the control system and any gas
control which has been under water.
WARNING
In addition there are thermostats that automatically switch
from Heating to Cooling and with night setbacks. The night
set-back, or multiple set-back type, will lower the temperature at night or during the day when no one is at home.
Room Temperature
Thermostat
To avoid death, personal injury or property
damage do not remove any internal compartment covers. Electrical components are
contained in both compartments. Contact a
qualified servicer at once if an abnormal
condition is noticed.
Cool/Heat
Temperature
Control Dial
Operating Instructions
1. Close the manual gas valve external to the furnace.
2. Turn off the electrical power supply to the furnace.
Thermostat
Control
Lever
Cool/Heat
Switch
3. Set room thermostat to lowest possible setting.
4. Remove the upper door on the front of the furnace by
turning the latch screw 1/4 turn.
Fan
Switch
System
Switch
OFF
Fan
Switch
AUTO
COOL
AUTO
COOL
ON
HEAT
AUTO
HEAT
ON
OFF
ON
5. This furnace is equipped with an ignition device which
automatically lights the burner. Do not try to light burner
by hand.
Action
None
System only cools, fan
cycles off and on.
System only cools, fan
runs all the time.
System only heats, fan
cycles off and on.
System only heats, fan
runs all the time.
No heating or cooling,
fan runs all the time.
6. White Rodgers Model 36E36 or 36E37 or Honeywell
Model VR-8205: Turn the gas control knob clockwise
to the OFF position for either the White Rodgers
gas valve (Figure 4) or the Honeywell gas valve (Figure
5).
White Rodgers Model 36E22 or 36E23: Push the selector switch to "OFF". (Figure 6)
7. Wait five minutes to clear out any gas. Then smell for
gas, including near the floor. This is important , because
some types of gas are heavier than air.
8. If you smell gas following the five minute waiting period
in Step 7, immediately follow the instructions on the cover
of this manual. If you do not smell gas after five minutes:
Figure 3
Typical Thermostat
White Rodgers Model 36E36 or 36E37 or Honeywell
Model VR-8205: Turn the gas control knob counterclockwise
to the ON position for either the White
Rodgers 36E gas valve (Figure 4) or the Honeywell VR8205 gas valve (Figure 5).
White Rodgers Model 36E22 or 36E23: Push the selector switch to "ON". (Figure 6)
9. Replace the door on the front of the furnace.
6
10. Open the manual gas valve external to the furnace.
Auxiliary Limit Control (GDC Only)
A second limit control is located on one side of the indoor air
blower. (Figure 11) Disconnect electrical power prior to removing the non-louvered door to reach the secondary limit
control. The control is in addition to the main control and
shuts the furnace off in case of a blower failure. This control
is a manual reset control, which can be reset only once. If
the unit goes off on limit a second time, contact a qualified
servicer so the problem causing the control to open can be
corrected.
11. Turn on the electrical power supply to the furnace.
12. Set thermostat to desired setting.
Flame Roll-Out
Protection
Device
Figure 4
White Rodgers
Models 36E36 or 36E37
Figure 7
Roll-Out Protection Device
(GUC and GUX)
Figure 5
Honeywell
Model VR-8205
WR
Redundant
Solenoid
O
F
F
INLET
M
1
P
3
C
2
Main
Solenoid
OUTLET
ON
ON/Off
Switch
Inlet Pressure Tap
(Side of Valve)
Main Regulator
Adjust
Flame Roll-Out
Protection
Device
Outlet Pressure Tap
(Side of Valve)
Figure 6
White Rodgers
Model 36E22 or 36E23
Figure 8
Roll-Out Protection Device - Counterflow
Position (GDC)
Roll-Out Protection Device
If flames from the burners are not properly drawn into the
heat exchanger, a flame roll-out limit switch will open causing combustion to cease. This limit switch must be reset
manually. The roll-out limit switch is located on one end of
the manifold assembly for GUC, GUX and GDC furnaces
(Figure 7 and 8) and in the burner box on GUD furnaces
(Figure 10). GDC furnaces installed horizontally will have
the roll-out limit switch located at the top end of the manifold assembly. (Figure 9)
7
WARNING
To avoid death, personal injury or property
damage due to fire or explosion, do not reset the roll-out protection device. If it opens,
the cause must be investigated by a qualified servicer before any attempt is made to
engage the roll-out protection device and
turn the furnace back on.
Flame Roll-Out
Protection
Device
Turning Off Furnace
1. Set the thermostat to lowest setting.
2. Turn off the electrical power supply to the furnace.
3. Remove the upper door on the front of the furnace by
turning the latch screws 1/4 turn each.
Figure 9
Roll-Out Protection Device - Horizontal
Position (GDC)
4. White Rodgers Model 36E36 or 36E37 or Honeywell
Model VR-8205: Turn the gas control knob clockwise
to the OFF position for either the White Rodgers
gas valves (Figure 4) or the Honeywell gas valve (Figure 5).
Flame Roll-Out
Protection
Device
White Rodgers Model 36E22 or 36E23: Push the selector switch to "OFF". (Figure 6)
5. Close manual gas shut-off valve external to the furnace.
6. Replace the door on the furnace.
Electronic Control Module
The furnace is equipped with a self-diagnostic electronic control module. If a furnace component is not operating properly, the control module will repeatedly flash a red light on
and off in a factory-programmed sequence, depending on
the problem encountered.
If a furnace equipped with a self diagnostic module is not
operating properly, look through the observation window in
the blower access door and make note of the number of
flashes in the sequence. Contact a qualified servicer for further information. Do not attempt to troubleshoot the problem yourself.
Figure 10
Roll-Out Protection Device
(GUD)
Auxiliary Limit Control
Horizontal
Counterflow
Position
Position
Reset After Control Lock-Out
If ignition has not been achieved for any reason after three
ignition cycles, the electronic control module will lock-out
the furnace. Ignition is no longer attempted. The control's
diagnostic light will then repeatedly flash once and then
pause. When this occurs, it may be necessary to reset the
control by turning the thermostat setting below room temperature for thirty seconds and then returning the setting to
the desired temperature. The control may also be reset after a lock-out by turning off the electrical disconnect switch
to the furnace for thirty seconds. The control will automatically reset after one hour.
Blower
Assembly
Transformer
Control
Board
IMPORTANT: If the furnace must be reset frequently to
obtain satisfactory operation, a problem exists with your furnace that must be corrected. Contact a qualified servicer.
Figure 11
Auxiliary Control (GDC)
8
III. Maintenance
Side Air Return
1. Lift filter above bottom
rail.
AT LEAST ONCE A YEAR, BEFORE THE HEATING SEASON BEGINS, have the furnace checked by a qualified servicer to be certain there is adequate combustion air and that
the furnace and the vent system are working properly.
Front of Furnace
Front of Furnace
Blower
Blower
Filter
Have the vent pipe and combustion air pipe (some models)
checked for blockage by debris or leaks, which could permit
fumes to enter the house. Replace any damaged sections of
the vent pipe.
2. Tilt filter to clear rail.
WARNING
To avoid death or personal injury due to electrical shock, disconnect the electrical power
before performing any maintenance.
Grab Here
And Lift
3. Lower filter below top
rail.
Replacing or Cleaning Filters
4. Pull filter out.
WARNING
To avoid death, personal injury or property
damage, never operate furnace without a filter installed. Dust and lint will build up on
internal parts resulting in loss of efficiency,
equipment damage and possible fire.
Front of Furnace
Front of Furnace
Blower
Blower
If filter replacement becomes necessary, it must be replaced
with a filter of the same type and size that complies with
UL900 or CAN/ULC-S111 standards.
See the Specification Sheet for filter sizes.
Figure 12
Filter Removal
WARNING
GUC, GUX, and GUD
Side Return Filter Sizes
Minimum Recom m ended Size, Inches
Size_Air Flow
Disposable*
Permanent*
045_30
1 - 24x24 (576)
1 - 16x25 (280)
070_30
1 - 24x24 (576)
1 - 16x25 (280)
070_40
2 - 16x25 (768)
1 - 16x25 (372)
090_35
2 - 14x25 (692)
1 - 16x25 (342)
090_50
2 - 20x25 (960)
2 - 16x25 (465)
115_50
2 - 20x25 (960)
2 - 16x25 (465)
To avoid death or personal injury due to electrical shock, disconnect the electrical power
before removing filters or performing any
maintenance.
The filter is designed for high velocity heating and cooling
applications. Filters must be inspected, cleaned or changed
every two months or as required. It is the owner's responsibility to keep air filters clean. NOTE: Dirty filters are the
most common cause of inadequate heating or cooling performance.
*
Upflow Filters (GUC, GUX, and GUD)
To remove the filter contained in the furnace retaining rails,
disconnect electrical power to the furnace and remove the
lower door by turning the door latches 1/4 turn.
Quantity - Inches (Total Minimum Surface Area in Square Inches)
Permanent filter sizes are as shipped with furnace. The minimum
permanent filter size area is based on allowable face velocity of 620 feet
per minute.
Table 2
Grasp the lower portion of the filter, lift up to disengage it
from the lower railing, move towards blower, drop filter down.
Pull filter outward. (Figure 12)
9
Bottom Air Return
The filter is held in place by a sheet metal retainer strap
(Figure 13). To change and clean the filter, slide one end of
the retainer toward the front and remove filter.
Counterflow Filters (GDC)
This manual discusses the furnace mounted filter rack which
is shipped with the furnace. Other filter arrangements could
have been used.
Figure 13
Filter Retainer
GUC, GUX, and GUD
Bottom Return Filter Sizes, Inches
Model
Filter Size (Inches)
Type
45
14 x 25 x 1
Permanent
70
16 x 25 x 1
Permanent
90
20 x 25 x 1
Permanent
115
20 x 25 x 1
Permanent
Table 3
Filter Cleaning and Replacing
Use a vacuum cleaner to clean out the blower area and the
adjacent area of the return air duct.
Wash, rinse, and dry a permanent filter. Both sides of a metal
filter should be sprayed with a dust adhesive as recommended on the adhesive container. Spray adhesives for use
with permanent metal filters can be found at some hardware
stores.
Figure 14
Counterflow Furnace Mounted Filter Rack
Remember dirty filters are the most common cause of inadequate heating or cooling performance.
If permanent filters are badly torn or uncleanable, they must
be replaced with permanent filters of the same type and size.
The furnace-mounted filter rack includes a rack 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. (Figure 14)
When replacing permanent filter used in side air return applications, the filter must have dimensions of 16" x 25" x 1".
The filters should be inspected and cleaned or changed every two months or as required. In some installations, the
filters can be inspected and cleaned or changed after disconnecting the electrical power and removing the optional
access door in the return air plenum. If the installation does
not have an access door proceed as follows:
When replacing permanent filter used in bottom air return
applications use Table 2 or 3 to determine filter size.
Reinstall filter by placing it into the furnace along the side of
the blower. Engage filter in top rail, move toward side of
furnace and drop it into the bottom rail. BE SURE AIRFLOW
DIRECTION ARROW POINTS TOWARDS THE BLOWER.
1. Disconnect the electrical power.
2. Remove the upper door from the furnace by turning the
door latches 1/4 turn.
3. Remove the left filter first by reaching to the left side of
the blower, pushing the filter up slightly to remove it from
the filter rack. Then carefully pull the filter down past the
left side of the blower housing. Be careful not to dislodge any trapped dirt or debris from the filter. (Figure
14)
10
4. Remove the right filter by reaching to the left side of the
blower. Lift filter up slightly to remove it from the filter
rack. Move the filter to the left side of the return air plenum, and down past the left side of the blower housing.
Be careful not to dislodge any trapped dirt or debris from
the filter. (Figure 14)
Horizontal Filters (GDC)
For horizontally installed furnaces, filters must be installed
external to the furnace casing. A central return with filters
installed in the duct behind the return grille may be used.
This would simplify filter replacement by merely requiring
the removal of the grille. Clean or replace filters every two
months or sooner as required (Table 5). Dirty filters are the
most common cause of inadequate heating or cooling performance.
a. Some installations will have two throwaway filters. If
dirty, these filters must be thrown away and replaced
with two new similar size throwaway filters. (Table 4)
b. Other installations will have two permanent filters.
GDC Horizontal Installations
Minimum Recommended Size
Size_Air
High-Velocity
Disposable
Flow
Permanent
(1) 16 x 25 x 1
(2) 15 x 20 x 1
045_30
or (1) 20 x 20 x 1
Wash, rinse and dry dirty permanent filters. After
cleaning, both sides should be sprayed with a filter
adhesive (available in hardware stores) as instructed
on the adhesive container.
When badly torn or uncleanable, permanent filters
must be replaced with permanent filters of the same
type and size. (Table 4)
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 14)
6. Replace the blower door, then reconnect the electrical
power.
Return Air
Optional
Access
Door
070_30
(1) 16 x 25 x 1
or (1) 20 x 20 x 1
(2) 15 x 20 x 1
070_40
(1) 20 x 25 x 1
(2) 20 x 20 x 1
090_40
(1) 20 x 25 x 1
(2) 20 x 25 x 1
090_50
(1) 20 x 25 x 1
(2) 20 x 25 x 1
115_50
(1) 20 x 25 x 1
(2) 20 x 25 x 1
Table 5
Condensate Collection and Disposal (Qualified
Servicer Only)
If the drain tubes or condensate collection standpipe assembly become blocked, the components may be removed,
cleaned and reinstalled.
"A"
(See Table
Minimum Below)
Induced Draft Motor Lubrication
The induced draft motor bearings are permanently lubricated.
No further lubrication is required.
GDC Counterflow Installations
Minimum Recommended Size
Size_Air Dimension
Filter (Qty), Size (Inch), Type
Flow
"A"
045_30
14-1/4
(2) 15 x 20 x 1 - Disposable
070_30
13
(2) 15 x 20 x 1 - Disposable
070_40
13
(2) 15 x 20 x 1 - Permanent
090_40
11-1/4
(2) 15 x 20 x 1 - Permanent
090_50
11-1/4
(2) 15 x 20 x 1 - Permanent
115_50
11-1/4
(2) 15 x 20 x 1 - Permanent
Air Circulating Blower Motor Lubrication
The air circulation blower motor bearings are permanently
lubricated. No further lubrication is required.
Table 4
11
IV. Inspection of Furnace (Qualified
Servicer Only)
V. For More Information
Most questions can be answered by the local Amana dealer.
Check with dealer first if needing any further information
regarding the operation, maintenance, or service of the furnace.
WARNING
To avoid death or personal injury due to
shock or burns, the following procedures
must be followed exactly, in sequence, before inspecting this furnace.
1. Close gas shut-off valve.
2. Disconnect electrical power to furnace.
3. To allow the furnace to cool, wait 15
minutes before proceeding.
If you have any matters that are not resolved locally, or for
more information on other heating and cooling products or
kitchen appliances offered by Amana is needed - please call:
CONSUMER INFORMATION LINE
AMANA TOLL FREE
1-800-843-0304 (U.S. only)
(Not a technical assistance line for dealers.)
________________________________________
Inspection Procedures
• Vacuum the burner vestibule annually.
Outside the U.S., call 1-319-622-5511.
• Burners, mounting brackets and all other parts in the
(Not a technical assistance line for dealers.)
vestibule area for signs of deterioration.
Your telephone company will bill you for the call.
• PVC flue pipe for leaks and holes (the PVC flue pipe
must slope upward away from the furnace).
• PVC flue outlet and air inlet (some models) for restriction (wasp nests, etc.) and general condition.
• Return air connection to the furnace for soundness,
proper sealing to the furnace casing and terminating
outside the space containing the furnace.
Ask a participating Amana dealer about
Amana's extended service plan. It adds to
the strong warranty with additional parts and
labor coverage.
• Physical support of the furnace for proper seal between
the support and the base, without any sagging, cracks
or gaps, etc.
• Burner operation. After reconnecting electrical power and
gas to the furnace, set room thermostat to maximum
setting to operate the furnace. Inspect the main burner
flames. Natural gas flames should be stable, soft and
blue. Propane gas flames may appear slightly yellow.
Dust may cause orange tips. Flame must extend directly
outward from the burner without curling, floating, or lifting off. On the GUD furnace only, the flames can be
inspected through the sight glass on the front cover. Only
a qualified servicer should ever remove the cover. (Figure 15)
To obtain the proper labels, the Model,
Manufacturing Number and Serial Number
of the unit must be supplied. These numbers are recorded on the nameplate of the
furnace. For convenience, record this information here:
MODEL NUMBER: _ _ _ _ _ _ _ _ _ _
MANUFACTURING NUMBER: P _ _ _ _ _ _ _F
SERIAL NUMBER: 9 _ _ _ _ _ _ _ _
Check the burner flames for:
1. Good adjustment
2. Stable, soft and blue
3. Not curling, floating, or lifting off.
Figure 15
Burner Inspection
12
VI. Safety Labels
NOTE: If safety labels are missing or illegible, contact the installing dealer or Amana Customer Service Department for
ordering information.
COMPARTMENT MUST BE
CE COMPARTIMENT DOIT RESTER
WARNING:THIS
CLOSED EXCEPT WHEN SERVICING AVERTISSEMENT:FERME, SAUF POUR L'ENTRETIEN
B13580-1 LA
13