Condensate Removal System - Baxi LUNA DUO-TEC 1.70 Installation And Service Manual

Verify proper operation after servicing.

CONDENSATE REMOVAL SYSTEM

This vent is to be used on a efficiency condensing appliance; therefore this venting has a condensate removal system. Condensate
is nothing more than water vapor, derived from the combustion products. It is very important that the condensate line is sloped
away from the vent and down to a suitable inside drain. A condensate filter, if required by local authorities can be made up of lime
crystals; marble or phosphate chips that will neutralize the condensate. This can be done in the field by the installer. It is also very
important 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 condensate line vacuum lock if a long horizontal run is used. Also, an increase in pipe size may
be necessary 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 manner, condensate can exit from the boiler condensate trap, resulting
in potential water damage to property.
Note:
Use materials approved by the authority having jurisdiction. In the absence of an authority, PVC and CPVC pipe must comply with
ASTMD1785, F441 or D2665. Cement and primer must comply with ASTM D2564 or F493. For Canada, use CSA or ULC certified
PVC or CPVC pipe, fittings and cement. 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 boiler will be slightly acidic (typically with a pH from 3.0 to 4.0). Install a neutralizing filter if required by local codes.
5 7703478.01 (1-03/18)