30
NOTE:
Both readings may be taken simultaneously and read
directly on the manometer if so desired. If an air conditioner
coil or Electronic Air Cleaner is used in conjunction with the
furnace, the readings must also include theses components,
as shown in the following drawing.
4. Consult proper tables for the quantity of air.
If the total external static pressure exceeds the maximum
listed on the furnace rating plate, check for closed dampers,
registers, undersized and/or oversized poorly laid out duct
work.
The temperature rise of the furnace must be within the tem
-
perature rise range listed on the furnace rating plate.
Checking Static Pressure
(80% Furnace Shown, 90% Similar)
Figure 41
Air Cleaner Installation
Location
Maximum
Heating Airflow
Filter (Media)
Dimensions
Part Number
Air Cleaner
Family
Side or bottom return
1200 CFM
16 in X 20 in x 5¼"
AM11-1620-5
Side or bottom return
1600 CFM
16 in X 25 in x 5¼"
AM11-1625-5
Side or bottom return
1600 CFM
20 in X 20 in x 5¼"
AM11-2020-5
Side or bottom return
2000 CFM
20 in X 25 in x 5¼"
AM11-2025-5
Side return
(for 2 separate returns)
Side return (Right angle)
2000 CFM
20 in X 25 in x 5¼"
AM11-2025-5RA
AM11-5RA
Bottom return (platform)
2000 CFM
20 in X 25 in x 5¼"
AM11-2832-5PP
Bottom return (platform)
2000 CFM
20 in X 25 in x 5¼"
AM11-2843-5PP
AM11-5PP
AM11-5
2 X 1600 CFM
2, 16 in X 25 in x 5¼"
AM11-3225-5
AM11-3225
AM11-5
Family
AM11-5RA
Family
AM11-5PP
Family