Installing Gas Piping To Fireplace Location - Vanguard 107156-01E.pdf Owner's Operation And Installation Manual

INSTALLATION
Continued
INSTALLING GAS PIPING TO FIREPLACE
LOCATION
WARNING: This appliance requires a 1/2" NPT
(National Pipe Thread) inlet connection to the pres-
sure regulator.
WARNING: A qualified service person must con-
nect fireplace to gas supply. Follow all local codes.
CAUTION: Never connect heater directly to the
propane/LP supply. This heater requires an external
regulator (not supplied). Install the external regulator
between the heater and propane/LP supply.
Installation Items Needed
Before installing fireplace, 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 (optional)
• tee joint
• pipe wrench
* 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, pages 32 and 33.
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 17.
Pointing the vent down protects it from freezing rain or sleet.
CAUTION: Use only new, black iron or steel pipe.
Internally-tinned copper tubing may be used in cer-
tain 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 17).
For more information, visit www.desatech.com
For more information, visit www.desatech.com
107156-01E

Installing Gas Piping to Fireplace Location

External
Regulator
Vent Pointing
Down
Figure 17 - External Regulator with Vent Pointing Down
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 requirements for locating
equipment shutoff valve to fireplaces.
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.
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 Figure 18. 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 fireplace gas controls. If sediment trap is not
installed or is installed wrong, fireplace may not run properly.
3" Minimum
Pipe
Nipple Cap
Sediment Trap
Figure 18 - Gas Connection
* Purchase the optional CSA design-certified equipment shutoff
valve from your dealer. See Accessories, pages 32 and 33.
** Minimum inlet pressure for purpose of input adj.
INSTALLATION
Propane/LP
Supply
Tank
CSA Design-Certified Equipment
Shutoff Valve With 1/8" NPT Tap*
From External
Regulator (11"w.c.** to
14"w.c. Pressure)
Tee
Joint
11
11