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Section 7 - Air Supply Installation
General Requirements
1.
The air supply source must be capable of producing 2.0 CFM @ 30 PSI.
2.
Install a shut off valve in the air supply line for service.
3.
Install a primary air filter/regulator with a gauge (capable of reading line pres-
sure) in the air supply line prior to the air filter/regulator mounted on the furnace. The
primary air filter/regulator
is not supplied
with the furnace.
4.
If the primary air regulator does not have a filter with a bowl, a condensate drain leg
must be installed in the air supply line.
5.
Install a quick disconnect at the air filter/regulator on the furnace for service.
6.
For the ease of installation install a flexible airline (.250 I.D. minimum) from the quick
disconnect to the primary air regulator.
7.
The air supply line must be pitched uphill from the primary regulator to the furnace to
prevent condensation from entering your burner.
8.
Open all air shutoff valves, and set the primary air regulator at 30 PSI. Make final setting
with heater running.
Example air-pressure supply installation:
Air inlet at
bottom of
burner
Secondary Air Filter/Regulator
[15 PSI running]
Air Supply & Primary Air Filter/Regulator
(Not Included)
[30 PSI running]