Desa S39PT - Manual (Page 8)

8 107435
VENT-FREE PROPANE/LP PEDESTAL STOVE
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Tee
Joint
Pipe
Nipple
Cap
3" Minimum
Sediment
Trap
Gas
Regulator
of Heater
From External
Regulator (11"
W.C.** to 14"
W.C. Pressure) CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*
Approved
Flexible Gas
Hose (if allowed
by local codes)
Figure 7 - Gas Connection
* Purchase the optional CSA design-certified equipment shutoff valve from your dealer.
See Accessories, page 24.
** Minimum inlet pressure for purpose of input adjustment.
CAUTION: Avoid damage to
regulator. Hold gas regulator with
wrench when connecting it to gas
piping and/or fittings.
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 1/2"
diameter or greater to allow
proper gas volume to heater. If
pipe is too small, undue loss of
pressure will occur.
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 7).
CAUTION: Use pipe joint seal-
ant that is resistant to liquid pe-
troleum (LP) gas.
We recommend that you install a sediment
trap in supply line as shown in Figure 7.
Locate sediment trap where it is within
reach for cleaning. Install in piping system
between fuel supply and heater. Locate sedi-
ment 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.
INSTALLATION
Continued
CONNECTING TO GAS
SUPPLY
WARNING: A qualified service
person must connect heater to gas
supply. Follow all local codes.
Installation Items Needed
Before installing heater, make sure you have
the items listed below.
• external regulator (supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
* An CSA design-certified equipment
shutoff valve with 1/8" NPT tap is an ac-
ceptable alternative to test gauge connec-
tion. Purchase the optional CSA design-
certified equipment shutoff valve from your
dealer. See Accessories, page 24.
Figure 5 - Gas Regulator Location and
Gas Line Access Into Stove Cabinet
Front
of
Stove
Unit
Gas Regulator
Inlet Connection
Back View
Side View
CAUTION: Never connect
heater directly to the propane/LP
supply. This heater requires an ex-
ternal regulator (not supplied). In-
stall the external regulator between
the heater and propane/LP supply.
Figure 6 - External Regulator With Vent
Pointing Down
Propane/LP
Supply Tank
External
Regulator
Vent
Pointing
Down
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 6. Pointing the vent down
protects it from freezing rain or sleet. IMPORTANT: Install equipment shutoff
valve in an accessible location. The equip-
ment shutoff valve is for turning on or
shutting off the gas to the appliance.
Apply pipe joint sealant lightly to male
threads. This will prevent excess sealant
from going into pipe. Excess sealant in pipe
could result in clogged heater valves.