VENTING
PART 8: VENTING, COMBUSTION AIR & CONDENSATE REMOVAL (CONTINUED)
that the condensate line is not exposed to freezing temperatures, or any other type of blockage.
Plastic tubing must be the only material used for the condensate line. Steel, brass, copper or others
will be subject to corrosion or deterioration. A second vent may be necessary to prevent conden-
sate line vacuum lock if a long horizontal run is used. Also, an increase in pipe size may be neces-
sary to drain properly. Support of the condensation line may be necessary to avoid blockage of the
condensate flow.
CAUTION
The condensate line must remain unobstructed, allowing free flow of condensate. If
condensate is allowed to freeze in the line or if the line is obstructed in any other manor,
condensate can exit from the water heater tee, resulting in potential water damage to
property.
NOTICE
Use materials approved by the authority having jurisdiction. In the absence of other
authority, PVC and CPVC pipe must comply with approved venting material chart in
Section 8-C.
When installing a condensate pump, select one approved for use with condensing
boilers and furnaces. The pump should have an overflow switch to prevent property
damage from condensate spillage.
Condensate from the Phoenix Evolution will be slightly acidic (typically with a pH from
3.2 to 4.5). Install a neutralizing filter if required by local codes.
Fig. 8-10
INSTALLATION OF CONDENSATE NEUTRALIZER/PUMP
LP-314-BB
10/05/09
NOTES:
CONDENSATE LINE MUST BE PITCHED AT LEAST 1/4” PER FOOT TO PROPERLY DRAIN. IF THIS CANNOT BE DONE OR A VERY LONG LENGTH OF
CONDENSATE HOSE IS USED YOU MUST INCREASE THE CONDENSATE LINE TO A MINIMUM OF 1” ID AND PLACE A TEE IN THE LINE AFTER THE CON-
DENSATE NEUTRALIZER TO PROPERLY REDUCE VACUUM LOCK IN THE DRAIN LINE.
PLASTIC PIPE SHOULD BE THE ONLY MATERIAL USED FOR THE CONDENSATE LINE. STEEL, BRASS, COPPER OR OTHERS WILL BE SUBJECT TO CORRO-
SION OR DETERIORATION.
IT IS ALSO VERY IMPORTANT THAT THE CONDENSATE LINE IS NOT EXPOSED TO FREEZING TEMPERATURES, OR ANY OTHER TYPE OF BLOCKAGE.
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