Desa CGEFP33PR Owner's Operation And Installation Manual page 17

INSTALLATION
Continued
INSTALLING GAS PIPING TO
FIREPLACE LOCATION
WARNING: A qualified ser-
vice person must connect fire-
place to gas supply. Follow all
local codes.
WARNING: For propane/LP
units, never connect fireplace di-
rectly to propane/LP supply. This
fireplace requires an external
regulator (not supplied). Install
the external regulator between the
heater and propane/LP supply.
WARNING: For natural gas
units, never connect fireplace
to private (non-utility) gas wells.
This gas is commonly known as
wellhead gas.
Installation Items Needed
Before installing fireplace, make sure you have
the items listed below.
• external regulator (supplied by installer, for
propane/LP units only)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
• approved flexible gas line with gas connector
(if allowed by local codes) (not provided)
* A CSA design-certified equipment shutoff valve
with 1/8" NPT tap is an acceptable alternative to
test gauge connection. Purchase the optional CSA
design-certified equipment shutoff valve from your
dealer. See Accessories, page 41.
For propane/LP connections only, the installer
must supply an external regulator. The external
regulator will reduce incoming gas pressure. You
must reduce incoming gas pressure to between 11
108117-01K
and 14 inches of water. If you do not reduce in-
coming gas pressure, heater regulator damage
could occur. Install external regulator with the vent
pointing down as shown in Figure 24. Pointing the
vent down protects it from freezing rain or sleet.
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 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 24).
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 require-
ments for locating equipment shutoff valve to fire-
places.
Apply pipe joint sealant lightly to male NPT
threads. This will prevent excess sealant from go-
ing into pipe. Excess sealant in pipe could result
in clogged fireplace valves. Never use sealant on
flare threads.
sealant that is resistant to liquid
petroleum (LP) gas.
Vent
Pointing
Down
Figure 24 - External Regulator with Vent
www.desatech.com
CAUTION: Use only new,
WARNING: Use pipe joint
External
Regulator
Pointing Down
Propane/LP
Supply Tank
17