International comfort products N9MP1 User Manual page 9

Figure 6
Counterflow Filter Replacement
Left Side
14²
(350mm)
1. Remove compartment door.
2. Reach up above right side of blower and lift dirty filters out of
rack at top of furnace.
3. Straighten up filters and pull straight down at side of
blower. Pull out through right side of door opening.
4. Inspect the filter(s) and replace or clean washable types. If
filter is aluminum mesh it should be recoated with filter coat-
ing spray.
Table1
Unit Size
Heating Input Heating Input
1000 x Btuh
40 -- 50
40 -- 50, 75, and 100
40 -- 50, 75, and 100
75,80,100, and 125
100 and 125
125
150
Main Burner Flame/Monthly
To inspect the Pilot and Main Burner flame it will be necessary to
remove the louvered panel on the front of the unit.
Check for the following through the view port:
· Stable and blue flames
· Flames extending directly from burner into heat exchanger.
· Flames do NOT touch sides of heat exchanger.
441 02 2001 06
Right Side
25--21--05d
Recommended Filter Sizes
Nominal Air Flow
Cubic Feet Cubic Feet
per Minute (CFM)
800--900
900--1100
1100--1300
1300--1500
1500--1700
1900--2100
2300--2500
User's Information Manual
5. Reinstall the filter in the filter rack.
Some filters are marked with an arrow to indicate the
proper direction of air flow through the filter. The air
flow direction will be towards the blower motor.
Make sure filter is installed correctly.
6. Reinstall compartment door.
Figure 7
Bottom Mounted Filter Rack
Some filters are marked with an arrow to indicate the
proper direction of air flow through the filter. The air
flow direction will be towards the blower motor. Make
sure filter is installed correctly.
Recommended Filter Sizes
Sq. In. Surface Area/Nominal Size (inches)
Disposable Filters
500 or 20 x 25
600 or 20 x 30
350 or 14 x 25 (2Req.)
400 or 16 x 25 (2Req.)
500 or 20 x 25 (2 Req.)
600 or 20 x 30 (2 Req.)
600 or 20 x 30 (2 Req.)
NOTE: Dust may cause orange tips or wisps of yellow, but flames
MUST NOT have solid, yellow tips.
· Check main burner flames monthly.
Pilot Flame
While the main burner is ON, the flame should envelop the upper
part of the Flame Sensor, as shown in Figure 8.
Contact a qualified service agency at once if an abnormal
flame appearance is identified.
AW3192
NOTE
Cleanable Filters
350 or 14 x 25
350 or 14 x 25
350 or 14 x 25
400 or 16 x 25 (2Req.)
500 or 20 x 25
500 or 20 x 25
720 or 24 x 30
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