Desa CGCFTP, CGCFTN Owner's Operation And Installation Manual page 15

INSTALLATION
Continued
CAUTION: Never connect pro-
pane/LP fireplace directly to the
propane/LP supply. This fireplace
requires an external regulator
(not supplied). Install the external
regulator between the fireplace
and propane/LP supply.
WARNING: Never connect
natural gas fireplace to private
(non-utility) gas wells. This
gas is commonly known as
wellhead gas.
For propane/LP units, 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 pressure,
fireplace regulator damage could occur. Install
external regulator with the vent pointing down
as shown in Figure 18. 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
1/2" or greater diameter to allow
proper gas volume to fireplace.
If pipe is too small, undue loss
of volume 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 fireplace (see Figure 19).
IMPORTANT: Install an equipment shutoff valve
in an accessible location. The equipment shutoff
valve is for turning on and shutting off the gas to
the appliance.
Check your building codes for any special re-
quirements for locating equipment shutoff valve
to fireplaces.
111044-01J
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 fireplace valves.
sealant that is resistant to liquid
petroleum (LP) gas.
We recommend that you install a sediment trap in
supply line as shown in Figure 19. Locate sediment
trap where it is within reach for cleaning. Install in
piping system between fuel supply and fireplace.
Locate sediment trap where trapped matter is not
likely to freeze. A sediment trap traps moisture and
contaminants. This keeps them from going into fire-
place controls. If sediment trap is not installed or is
installed wrong, fireplace may not run properly.
Propane/LP
Supply Tank
Figure 18 - External Regulator with Vent
3" Minimum
Pipe
Nipple
Sediment Trap
* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer. See
Accessories, page 27.
www.desatech.com
WARNING: Use pipe joint
Vent Pointing Down
Pointing Down
CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*
Cap Tee
Joint
Figure 19 - Gas Connection
External
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)
15