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INSTALLATION
8
Installing Heater To Wall (Cont.)
Connecting To Gas Supply
INSTALLATION
Continued
Installing Bottom Mounting Screw
1.
Locate bottom mounting hole. This hole is near bottom on back
panel of heater (see Figure 11).
2.
Mark screw location on wall.
3.
Remove heater from wall.
4.
If installing bottom mounting screw into hollow or solid wall,
install wall anchor. Follow steps 1 through 5 under Attaching To
Wall Anchor Method, page 7. If installing bottom mounting screw
into wall stud, drill hole at marked location using 9/64" drill bit.
5. Replace heater on wall.
6. Insert bottom anchor screw through back panel into bottom
anchor or drilled hole (see Figure 11).
7. Tighten screw 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 8 through 10).
Figure 11 - Installing Bottom Mounting Screw
CONNECTING TO GAS SUPPLY
WARNING: This appliance requires a 3/8" NPT
(National Pipe Thread) inlet connection to the pres-
sure regulator.
WARNING: A qualified service person must con-
nect heater to gas supply. Follow all local codes.
WARNING: For natural gas, never connect heater to
private (non-utility) gas wells. This gas is commonly
known as wellhead gas.
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.
For more information, visit www.desatech.com
For more information, visit www.desatech.com
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.
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 external regulator with the vent pointing down
as shown in Figure 12. Pointing the vent down protects it from
freezing rain or sleet.
CAUTION: Use only new, black iron or steel pipe.
Internally-tinned copper tubing may be used in cer-
tain 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.
Installation must include equipment shutoff valve, union, and plugged
1/8" NPT tap. Locate NPT tap within reach for test gauge hook up.
NPT tap must be upstream from heater (see Figure 13, page 9).
IMPORTANT: Install an equipment shutoff valve in an accessible
location. The equipment shutoff valve is for turning on or shutting
off the gas to the appliance.
Check your building codes for any special requirements for locating
equipment shutoff valve to fireplaces.
Apply pipe joint sealant lightly to male NPT threads. This will
prevent excess sealant from going into pipe. Excess sealant in pipe
could result in clogged heater valves.
WARNING: Use pipe joint sealant that is resistant
to liquid petroleum (LP) gas.
Propane/LP
Supply Tank
Figure 12 - External Regulator With Vent Pointing Down
(propane/LP systems only)
External Regulator
Vent Pointing Down
110720-01B
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