33
Slope pipe downwards
1/4" per foot.
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
1/4" per foot.
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
DO NOT ADD
ANY VALVES
Note:
If the drain line becomes clogged or frozen, condensate will back-up into the Combi Boiler and a "90"
error code will ash on the Operation Panel, ceasing operation. If this occurs, clear the clog or freeze
so that condensate can freely 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.
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