Owner's Manual

www.desatech.com
111244-01G16
Installation must include an 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 23).
IMPORTANT: Install 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 re-
quirements for locating equipment shutoff valve
to replaces.
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 replace valves.
   
sealant that is resistant to liquid

INSTALLATION
Continued
* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer. See
Accessories, page 44.
Figure 23 - Gas Connection
CSA Design-Certied
Equipment Shutoff Valve
With 1/8" NPT Tap*
3" Minimum
Approved
Flexible
Gas Line
Pipe Nipple Cap Tee Joint

From External
Regulator ( 11"
W.C.** to 14" W.C.
Pressure)
NATURAL
From Gas Meter
(5" W.C.** to
10.5" W.C.
Pressure)
Sediment Trap
Propane/LP
Supply
Tank
External
Regulator
Figure 22 - External Regulator With Vent
Pointing Down
Vent
Pointing
Down

WARNING: This appliance
     




    

WARNING: Never connect natu-
-


IMPORTANT: For natural gas, check gas line
pressure before connecting replace 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.
CAUTION: Never connect pro-


   

  

For propane/LP units, 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, replace regulator damage could occur.
Install external regulator with the vent pointing
down as shown in Figure 22. Pointing the vent
down protects it from freezing rain or sleet.
CAUTION: Use only new, black

-


-

