www.desatech.com
118620-01E
12
CONNECTING TO GAS SUPPLY
WARNING: This appliance
requires a 3/8" NPT (National
Pipe Thread) inlet connection to
the pressure regulator.
WARNING: A qualified ser
-
vice person must connect 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.
Figure 16 - External Regulator With Vent
Pointing Down
Propane/LP
Supply Tank
External
Regulator
with Vent
Pointing
Down
INSTALLATION
Continued
INSTALLING BATTERIES INTO
REMOTE
1. Locate hand-held remote control in hard
-
ware bag included with your heater.
2. Remove battery cover and insert supplied
batteries into remote control as shown in
Figure 15.
3. Replace battery cover.
1
9
13
5
7
3
11
15
A
M
E
G
C
K
I
O
Figure 15 - Installing Batteries in Hand-
Held Remote Control
AAA
Batteries
Battery Cover
Remote Control
IMPORTANT:
For natural gas, check gas line
pressure before connecting heater to gas line.
Gas line pressure must be no greater than
10.5" of water. If gas line pressure is higher,
heater regulator damage could occur.
CAUTION: For propane/LP
gas, never connect heater di
-
rectly to the propane/LP supply.
This heater requires an external
regulator (not supplied). Install
the external regulator between the
heater and propane/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"
of water. If you do not reduce incoming gas pres
-
sure, heater regulator damage could occur. Install
the external regulator with the vent pointing down
as shown in Figure 16. Pointing the vent down
protects it from freezing rain or sleet.
CAUTION: Use only new,
black iron or steel pipe. Inter
-
nally-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.
Typical Inlet Pipe Diameters
20,000 Btu/Hr Models - 3/8" or greater
30,000 Btu/Hr Models - 1/2" or greater
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 17, page 13).
Figure 14 - Installing Remote Receiver
OFF REMOT
E
Receiver
Hook and
Loop Strip
on Bottom
of Receiver
Burner
Heater
Cabinet
