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107123
VENT-FREE NATURAL GAS LOG HEATER
For more information, visit www.desatech.com
CAUTION: Avoid damage to
regulator. Hold gas regulator with
wrench when connecting it to gas
piping and/or fittings.
Figure 15 - Gas Connection
* Purchase the optional CSA/AGA design-certified equipment shutoff valve from your
dealer. See Accessories, page 27.
** Minimum inlet pressure for purpose of input adjustment.
INSTALLATION
Continued
CONNECTING TO GAS
SUPPLY
WARNING: A qualified ser-
vice 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.
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
* An CSA/AGA design-certified equip-
ment shutoff valve with 1/8" NPT tap is an
acceptable alternative to test gauge connec-
tion. Purchase the optional CSA/AGA de-
sign-certified equipment shutoff valve from
your dealer. See Accessories, page 27.
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 15).
IMPORTANT:
Install equipment shutoff
valve in an accessible location. The equip-
ment 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.
CAUTION: Use pipe joint seal-
ant that is resistant to liquid pe-
troleum (LP) gas.
WARNING: Never connect
heater to private (non-utility) gas
wells. This gas is commonly
known as wellhead gas.
We recommend that you install a sediment
trap in supply line as shown in Figure 15.
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.
Tee Joint
Pipe
Nipple
Cap
3" Minimum
Sediment Trap
Gas
Regulator
From
Gas Meter
(5" W.C.** to
10.5" W.C.
Pressure)
CSA/AGA Design-
Certified Equipment
Shutoff Valve With 1/8"
NPT Tap*
Approved Flexible Gas
Hose (if allowed by
local codes)
WARNING: This appliance
requires a 1/2" NPT (National Pipe
Thread) inlet connection to the
pressure regulator.