Desa GWN20TB Safety Information And Installation Manual page 8

INSTALLATION ITEMS
Before installing heater, make sure you have
the items listed below.
• for propane/LP gas, external regulator
(supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• ground joint union
• sediment trap
• tee joint
• pipe wrench
• for natural gas, test gauge connection*
• hardware packet (included)
- wall anchor (4)
- red key (1)
- pan head screw, black (4)
- nylon spacer (2)
- clamp (1)
- Phillips head screw, silver (4) 100159-02
* A CSA design-certified equipment shutoff
valve with 1/8" NPT tap is an acceptable alter-
native to test gauge connection. The optional
CSA design-certified equipment shutoff valve
can be purchased from your dealer.
LOCATING HEATER
This heater is designed to be mounted on a wall.
WARNING: Maintain the
minimum clearances shown
in Figure 4. If you can, provide
greater clearances from floor,
ceiling and joining wall.
You can locate heater on floor, away from
a wall. An optional floor mounting stand is
needed. Purchase the floor mounting stand
from your dealer. See Accessories, page 26,
if stand is not included with your heater.
WARNING: Never install the
heater
• in a bedroom or bathroom
• in a recreational vehicle
• where curtains, furniture, cloth-
ing or other flammable objects
are less than 36" from the front,
top or sides of heater
• as a fireplace insert
• in high traffic areas
• in windy or drafty areas
8
INsTallaTIoN
Continued
warm air currents. These currents
move heat to wall surfaces next
to heater. Installing heater next
to vinyl or cloth wall coverings or
operating heater where impurities
(such as, but not limited to, to-
bacco smoke, aromatic candles,
cleaning fluids, oil or kerosene
lamps, etc.) in the air exist, may
discolor walls or cause odors.
095112-02
IMPORTANT: Vent-free heaters add moisture
095116-01
to the air. Although this is beneficial, installing
097403-02
heater in rooms without enough ventilation
099064-02
air may cause mildew to form from too much
099123-01
moisture. See Air for Combustion and Ventila-
tion, page 5. If high humidity is experienced,
a dehumidifier may be used to help lower the
water vapor content in the air.
heater in a home garage
• heater pilot and burner must
be at least 18" above floor
• locate heater where moving
vehicle will not hit it
For convenience and efficiency, install heater
• where there is easy access for operation,
inspection and service
• in coldest part of room
If not included with your heater, an optional fan
kit is available from your dealer. See Acces-
sories, page 26. If planning to use fan, locate
heater near an electrical outlet (see page 16).
Figure 4 - Mounting Clearances As
www.desatech.com
CAUTION: This heater creates
CAUTION: If you install the
CEILING
6"
Minimum
From
Sides Of
Heater
Left
Side
36"
(91.5 cm)
Viewed From Front of Heater
36"
Minimum
Right
Side
Minimum To
Top Surface
Of Carpeting,
2"
Tile Or Other
Combustible
Material
FLOOR
124002-01C