www.desatech.com
111035-01F
16
WARNING: Use pipe joint
sealant that is resistant to liquid
petroleum (LP) gas.
We recommend that you install a sediment trap in
supply line as shown in Figures 19 or 20 depending
on your model. Locate sediment trap where it is
within reach for cleaning. Install in piping system
between fuel supply and heater. Locate sediment
trap where trapped matter is not likely to freeze.
A sediment trap traps moisture and contaminants.
This keeps them from going into heater controls. If
sediment trap is not installed or is installed wrong,
heater may not run properly.
CAUTION: Avoid damage to
regulator. Hold gas regulator with
wrench when connecting it to gas
piping and/or fittings (Variable Man
-
ually-Controlled Models Only).
CAUTION: Avoid damage to
gas control. Hold gas control
with wrench when connecting
it to gas piping and/or fittings
(Remote-Ready Models Only).
INSTALLATION
Continued
CHECkING GAS CONNECTIONS
WARNING: Test all gas piping
and connections, internal and
external to unit, for leaks after
installing or servicing. Correct
all leaks at once.
WARNING: Never use an
open flame to check for a leak.
Apply a noncorrosive leak detec
-
tion fluid to all joints. Bubbles
forming show a leak. Correct all
leaks at once.
CAUTION: Make sure exter-
nal regulator has been installed
between propane/LP supply and
heater. See guidelines under
Con-
necting to Gas Supply
, page 15.
Figure 19 - Gas Connection (Variable
Manually-Controlled Only)
* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer. See
Accessories
, page 39.
** Minimum inlet pressure for purpose of input
adjustment.
Figure 20 - Gas Connection (Remote-
Ready Models Only)
Gas Control
Tee Cap Pipe
Joint
Nipple
3" Min
Gas
Regulator
Propane/LP
From
External Regulator
(11" W.C.**
to 14" W.C. Pressure)
Natural
From Gas
Meter (5" W.C.** to
10.5" W.C.
Pressure)
CSA Design-
Certified Equipment
Shutoff Valve With
1/8" NPT Tap*
Approved
Flexible Gas
Hose (if allowed
by local codes)
3" Min
Sediment Trap
Propane/LP
From
External Regulator
(11" W.C.** to 14"
W.C. Pressure)
Natural
From Gas Meter
(5" W.C.** to
10.5" W.C.
Pressure)
CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*
Approved Flexible
Gas Hose (if
allowed by local
codes)
Pipe Cap Tee
Nipple
Joint
Sediment Trap
* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer. See
Accessories
, page 39.
** Minimum inlet pressure for purpose of input
adjustment.
