20
Slope pipe downwards
1/50
The end of the drain pipe
must have an air gap.
The end of the drain pipe
must have an air gap.
Condensate piping to floor drain
Slope pipe downwards
1/50
1/2" PVC pipe
1/2" PVC elbow
3/8" ID tubing*
* Install tubing according to pump
manufacturer's instructions.
Condensate piping with pump
Condensate pump
Floor drain
MAINTAIN CLEARANCE
1/2" PVC pipe
DO NOT ADD
ANY VALVES
Condensing
Tankless Gas
Water Heater
Condensing
Tankless Gas
Water Heater
DO NOT ADD
ANY VALVES
Note:
If the drain line becomes clogged or frozen, condensate will back-up into the water heater and a "29" er-
ror code will fl ash on the remote controller, ceasing operation. If this occurs, clear the clog or freeze so
that condensate can freely fl ow. Be sure to slope the drain pipe, use the appropriate size pipe, allow the
proper clearances, and apply freeze prevention measures (when necessary) to prevent the drain line
from clogging or freezing.
