Service manual

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
Vertical DOAS
Rev.: 01/31/13
18
ClimateMaster Water-Source Heat Pumps
Vertical Installation
Condensate Piping – Vertical Units - The condensate
drain connection is on the side of the DOAS unit. Pitch
the drainpipe a minimum of 1/4 inch per linear foot, and
support it at least every 5 feet. If the drain runs through
an unconditioned space, you must install heat tracing to
prevent the moisture in the drain from freezing. NOTE:
While its supply blower runs, the inside of the DOAS Unit
operates at a negative pressure. Your Tranquility unit has
an internal factory-installed p-trap in the condensate
drain to prevent condensate from being drawn into the
cabinet of the DOAS unit.
 CAUTION! 
CAUTION! Ensure condensate line is pitched toward drain
1/8 inch per ft [11mm per m] of run.