Lifebreath Clean Air Furnace CAF-02-MB - Manual (Page 7)

7
Plumbing
In order to improve serviceability of our products, the
check valve is included with our manual kit for field instal-
lation between the air-handler and hot water source.
The check valve should be installed in a vertical run of
pipe with the flow of water in an upward direction.
An arrow on the check valve indicates its correct orienta-
tion and must match the direction of water flow.
This will allow for ease of service to remove any installa-
tion debris or service required due to extended hard water
conditions.
Note: Take care during soldering to avoid debris or
solder from lodging in the check valve.
Note: It is critical to follow the piping configuration
shown. Maintain a minimum distance of 12” above
the CAF/AH. This will minimize thermal siphoning in
the combo system.
* It should be noted that problems have been observed when using the side
tappings on certain water heaters; therefore, it is strongly recommended to use the top
water tappings as indicated in Figure 1 to minimize thermal siphoning and related
issues.
Water
Heater
Check
Valve
To
House
CAF
or
AH
Min. 12" (305 mm)above
top of CAF / AH
12"
Water
Heater
CAF
or
AH
Check
Valve
Min. 12" (305 mm)
above top of CAF / AH
To
House
12"
Figure 1
Figure 2