Outdoor Installation; Controls - Raypak XTherm Series Installation & Operating Instructions Manual

Outdoor Installation

Units must not be installed where the condensate can
freeze. Units installed outdoors must be vented with
listed vent material per the following instructions and
installed with the optional factory-supplied outdoor
vent kit. A special vent cap and air intake hood are
provided in accordance with CSA requirements. These
must be installed directly on the vent pipe as illustrated
in Fig. 42.
Fig. 42: Outdoor Installation
CAUTION: Use of double-wall vent pipe is
recommended to minimize the risk of personal injury.
Care must be taken when locating the heater outdoors,
because the flue gases discharged from the vent cap
can condense as they leave the cap. Improper location
can result in damage to adjacent structures or building
finish. For maximum efficiency and safety, the follow-
ing precautions must be observed:
1. Outdoor models must be installed outdoors and
must use the outdoor vent cap and air intake
hood available from the manufacturer (sales order
option D-11).
2. Periodically check venting system. The heater's
venting areas must never be obstructed in any
way and minimum clearances must be observed
to prevent restriction of combustion and ventilation
air. Keep area clear and free of combustible and
flammable materials.
3. Do not locate adjacent to any window, door,
walk-way, or gravity air intake. The vent must be
located a minimum of 4 ft horizontally from such
areas.
4. Install above grade level and above normal snow
levels.
NOTE: The vent cap and air intake hood must be
furnished by the heater manufacturer in accordance
with its listing (sales order option D-11).
NOTE: Condensate can freeze on the vent cap.
Frozen condensate on the vent cap can result in a
blocked flue condition.
5. Vent terminal must be at least 3 ft above any
forced air inlet located within 10 ft.
6. Adjacent brick or masonry surfaces must be
pro-tected with a rust-resistant sheet metal plate.
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.

Controls

WARNING: Installation, adjustment and service of
heater controls, including timing of various operating
functions, must be performed by a qualified installer,
service agency or the gas supplier. Failure to do so
may result in control damage, heater malfunction,
property damage, personal injury, or death.
WARNING: Turn off the power to the heater before
installation, adjustment or service of any heater
controls. Failure to do so may result in board
damage, heater malfunction, property damage,
personal injury, or death.
CAUTION: This appliance has provisions to be con-
nected to more than one supply source. To reduce
the risk of electric shock, disconnect all such con-
nections before servicing.
CAUTION: Risk of electric shock: More than one
disconnect switch may be required to de-energize
the equipment before servicing.
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