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Drain Line
The ventilation portion of the Clean Air Furnace
has two drain pans for removing condensation,
which may occur on the heat recovery core
during cold weather.
Piping
The hot water piping between the hot water tank
and the Clean Air Furnace should be new
copper type, and should not be treated with
chemicals, sealant or anything else, that will
interfere with the purity of the potable water.
Only non-lead, low temperature solder is
permitted for sealing copper joints. The copper
soldered pipe size for each model is:
Model 40/4TONDHW 1/2" nominal
Model 60 3/4" nominal
Where possible the length of pipe should not
exceed 200' total equivalent length. Any piping
running through unconditioned space must be
insulated to prevent heat loss, and possible
freezing of the line.
Stickers indicating direction of flow, (Supply to
furnace, and Return to water heater) are
labeled on the outside of the cabinet. Do not
reverse these lines, as this will cause the unit to
malfunction.
For piping conventional water heaters,
connections to and from the Clean Air Furnace
to the water tank should be made at the point
where the pipes leave the tank vertically. A "T"
fitting used in each vertical line, with the Clean
Air Furnace piping connected to the horizontal
side of this fitting, will work best in avoiding air
locks in the circulation pump of the furnace.
*Note: Remove shipping block from underneath
pump and discard.
DRAIN
SPOUT
TAPE
THROUGH KNOCKOUT
TO DRAIN
TEE
CONNECTOR
DRAIN
SPOUT
2"
KNOCKOUT
KNOCKOUT
HRV Drain Line Diagram