SECTION C: Installation
28
Outdoor Installation
Outdoor models are self-venting when installed with
the optional factory-supplied outdoor vent kit. Addi-
tional vent materials are required as outlined in the
Outdoor Vent Kit instructions. A special vent cap and
air intake elbow are offered in accordance with CSA
requirements. These must be installed directly on the
vent pipe as illustrated in Fig. 26.
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. They
must use the outdoor vent cap and air intake elbow
available from the manufacturer (sales order op-
tion D-11).
2. Periodically check the venting system. The
heater’s venting areas must never be obstructed in
any way and minimum clearances must be ob-
served to prevent restriction of combustion and
ventilation air. Keep area clear and free of com-
bustible 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.
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.
NOTICE: Condensate can freeze on the vent cap. Fro-
zen condensate on the vent cap can result in a blocked
flue condition.
NOTICE: The vent cap and air intake hood must be
furnished by the heater manufacturer in accordance
with its listing (sales order option D-11).
Fig. 26: Outdoor Venting
Freeze Protection
When installing this heater in an outdoor location that
is susceptible to freezing, sales option B-22 should be
installed to energize the heater pump at a present out-
door air temperature and circulate water to reduce the
possibility of freezing and damage to the heat ex-
changer or headers.
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 con-
trols. Failure to do so may result in 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 connections
before servicing.
CAUTION: Risk of electric shock: More than one
disconnect switch may be required to de-energize the
equipment before servicing.
