PRODUCT DESIGN
Thermostats:
NOTE: Complete lineup of thermostats can be found in the Thermostat Specification Sheets.
Filters:
Filters are required with this furnace and must be provided by the installer. The filters used must comply with UL900 or CAN/ULCS111 standards. Installing this furnace without filters will void the unit warranty.
Upflow Filters
This furnace has provisions for the installation of return air filters at the side and/or bottom return. The furnace will accommodate the following filter sizes depending on cabinet size:
Side Return(s)
| Cabinet | Nominal | Approx. |
|
| Width | Filter Size | Flow Area |
|
| (in.) | (in.) | (in2) |
|
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|
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|
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| All | 16 x 25 x 1 | 400 |
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Bottom Return
Cabinet | Nominal | Approx. |
Width | Filter Size | Flow Area |
(in.) | (in.) | (in2) |
|
|
|
14 x 25 x 1 | 350 | |
|
|
|
21 | 16 x 25 x 1 | 400 |
|
|
|
Refer to Minimum Filter Area tables to determine filter area requirement. NOTE: Filters can also be installed elsewhere in the duct system such as a central return.
MINIMUM FILTER SIZES
FURNACE INPUT | FILTER SIZE | TYPE |
45M | 160 in2 | permanent |
70M | 241 in2 | permanent |
90M | 320 in2 | permanent |
115M | 400 in2 | permanent |
140M | 370 in2 | permanent |
45M | 320 in2 | disposable |
70M | 483 in2 | disposable |
90M | 640 in2 | disposable |
115M | 800 in2 | disposable |
140M | 738 in2 | disposable |
PERMANENT NOMINAL 600 F.M. FACE VELOCITY
DISPOSABLE NOMINAL 300 F.M. FACE VELOCITY
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