Raypak 88AR-398A, Installation & Operating Instructions Manual

Page: 38 / 68

38
Freeze Protection
To enable freeze protection, DIP switch position 7 (on
the PIM) must be turned on (UP position). This is the
default position.
If the water temperature drops below 45˚F on the
Outlet or Inlet sensors, the Boiler pump is enabled.
The pump is turned off when both the Inlet and Outlet
temperatures rise above 50˚F.
If either the Outlet or Inlet temperature drops below
38°F, the VERSA starts the burner at the minimum fir-
ing rate. The burner cycle will terminate when both the
Inlet and Outlet temperatures rise above 42°F.
CAUTION: In general, the condensate piping from
the appliance must have a downward slope of ¼” per
horizontal foot. Condensate drain traps must be
primed with water to prevent gas flue leaks.
Treatment kits should be checked at least once per
year, to ensure that the pH of the effluent is 5.0 or
higher, and the chips should be replenished as nec-
essary. When replacing the chips, they should be no
smaller than ¾” to avoid blockage in the condensate
piping. Fig. 38 is a visual guide only. Follow the man-
ufacturer’s instructions for the installation of the
treatment kit and condensate drains.
Fig. 38: Visual Guide for Condensate Piping
CAUTION: This appliance has provisions to be
connected to more than one supply source. To
reduce the risk of electric shock, disconnect all such
connections before servicing.
CAUTION: Risk of electric shock: More than one
disconnect switch may be required to de-energize
the equipment before servicing.
WARNING: Installation, adjustment and service of
controls, including timing of various operating func-
tions, must be performed by a qualified installer,
service agency or the gas supplier. Failure to do so
may result in control damage, malfunction, property
damage, personal injury, or death.