107885-01D
For more information, visit www.desatech.com
For more information, visit www.desatech.com
10
Figure 12 - Installing Bottom Mounting Screws
Side View
Front View
Wall
Spacer
Heater
INSTALLATION
Continued
INSTALLATION
Installing Heater To Wall (Cont.)
Connecting To Gas Supply
For propane/LP gas, the installer must supply an external regulator.
The external regulator will reduce incoming gas pressure. You must
reduce incoming gas pressure to between 11 and 14 inches of water.
If you do not reduce incoming gas pressure, heater regulator damage
could occur. Install the external regulator with the vent pointing
down as shown in Figure 13. Pointing the vent down protects it from
freezing rain or sleet.
WARNING: A qualified service person must con-
nect heater to gas supply. Follow all local codes.
CAUTION: For propane/LP gas, never connect
heater directly to the propane/LP supply. This heater
requires an external regulator (not supplied). Install
the external regulator between the heater and pro-
pane/LP supply.
CAUTION: Use only new, black iron or steel pipe.
Internally-tinned copper tubing may be used in certain
areas. Check your local codes. Use pipe of large
enough diameter to allow proper gas volume to heater.
If pipe is too small, undue loss of volume will occur.
WARNING: This appliance requires a 3/8" NPT
(National Pipe Thread) inlet connection to the pres-
sure regulator.
IMPORTANT:
For natural gas, check gas line pressure before
connecting heater to gas line. Gas line pressure must be no greater
than 14 inches of water. If gas line pressure is higher, heater
regulator damage could occur.
WARNING: For natural gas, never connect heater
to private (non-utility) gas wells. This gas is com-
monly known as wellhead gas.
CONNECTING TO GAS SUPPLY
Figure 13- External Regulator With Vent Pointing Down
External
Regulator
Propane/LP
Supply
Tank
Vent
Pointing
Down
Installing Bottom Mounting Screws
1.
Locate two bottom mounting holes. These holes are near bot-
tom on back panel of heater (see Figure 12).
2.
Mark screw locations on wall.
3.
Remove heater from mounting bracket.
4.
If installing bottom mounting screws into hollow or solid wall,
install wall anchors. Follow steps 1 through 4 under Attaching To
Wall Anchor Method, page 9.
If installing bottom mounting screw into wall stud, drill holes
at marked locations using 9/64" drill bit.
5.
Replace heater onto mounting bracket.
6.
Place spacers between bottom mounting holes and wall anchor
or drilled hole.
7.
Hold spacer in place with one hand. With other hand, insert
mounting screw through bottom mounting hole and spacer.
Place tip of screw in opening of wall anchor or drilled hole.
8.
Tighten both screws until heater is firmly secured to wall. Do
not over tighten.
Note:
Do not replace front panel at this time. Replace front
panel after making gas connections and checking for leaks (see
pages 11 and 12).
