Troubleshooting guide

PV500-23 04-2005 Section 23
9
POWER VT
®
BOILER
CONDENSATE NEUTRALIZATION & DISPOSAL
The POWER VT
®
boiler can produce significant
amounts of condensate because of their high
efficiency. Condensate occurs naturally when
water vapor in combustion gases is cooled below
the dew point. Although only slightly acidic,
POWER VT
®
boiler condensate can be routed
through an optional neutralization system to
become pH neutral allowing for disposal into any
drain or sewer system without concern for
corrosion. A fitting should be provided in the
venting to route any vent condensate away from
the combustion blower. This can be accomplished
by installing a tee in the vent not more than 18"
from the combustion blower outlet.
Crushed limestone fills the condensate
neutralization bath. Condensate slowly flows
through the limestone bed and is neutralized thus
avoiding chemical treatment or dilution using
substantial quantities of tap water. If the
condensate pH is lower than 4 when checked with
a pH meter or pH paper, consult the factory for
replacement treatment system. Condensate
drainage from the POWER VT
®
boiler will only
occur after a recovery run cycle. If no condensate
is drained during this time, the drainpipe should
be inspected for blockage. Should the heater not
be installed on a housekeeping pad to ensure
gravity drainage, a means of removing
condensate, such as a pump, should be supplied
in the system.