Filter
Top Products
3
5. Drain connections must conform to local codes.
6. Installer must supply the following gas line fittings
according to which entrance is used:
Top Two 90° Elbows
One Close Nipple
Left
One 90° Elbow
Right
One 90° Elbow
One 45° Elbow
One Close Nipple
Flame Sensor
Flame sensor output is 1 to 4 microamps at 115 volts.
Filters
Side Return Filters
Minimum Recommended Size
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)
* 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.
Bottom Return Filter Sizes
Model Filter Size (Inches) Type
45 14 x 25 x 1 P
70 16 x 25 x 1* P
90 20 x 25 x 1 P
115 20 x 25 x 1 P
P = Permanent
* As Shipped With Furnace
The figure below shows how the filter is retained over the
bottom return air opening.
Filter Retainer
Filter
Furnace Bottom
Filter Retainer
Accessibility Clearances (Minimum)
WARNING
To avoid death, personal injury or property
damage due to fire, clearances to combus-
tible surfaces listed as below must be
observed.
36 inches front clearance is required for servicing or clean-
ing.
NOTE: In all cases, accessibility clearance must take
precedence over clearances from the enclosure where
accessibility clearances are greater.
CLEARANCES TO COMBUSTIBLE SURFACES
GUD_ MODEL FURNACES (Inches)
FRONT 3 TOP 1
RIGHT 1 FLUE 0
LEFT 1 FLOOR C
REAR 0 ---- ----
C = If placed on combustible floor, floor MUST be wood only.
High Altitude Installations
For installations above 4000 feet, please refer to your
Amana distributor for required kit(s).
Gas Altitude Kit Orifice
Manifold
Pressure
Natural 0-4000 Ft. None #43 3.5" W.C.
Propane 0-4500 Ft. LPTK09 #55 10.0" W.C.
NOTE: In Canada, gas furnaces are certified to 4,500 feet
only.
IMPORTANT NOTES:
1. All furnaces have a redundant gas valve and blower
door interlock switch.
2. All furnaces are manufactured for use on 115 VAC, 60
Hz, single phase electrical supply.
3. IMPORTANT: While the data is presented as a guide,
it is very important to properly size fuses and wires and
make electrical connections in accordance with the
National Electrical Code and/or all existing local codes.
4. Performance figures are based on Department of En-
ergy information and requirements under continuous
operating conditions. Performance will vary with weather
conditions and use.