Vanguard Heating VMH26TPC - Manual (Page 16)

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INSTALLATION
Continued
CONNECTING TO GAS SUPPLY
WARNING: This appliance
requires a 45° male flare fitting
5/8"-18 UNF (Unified National Fine
Thread) inlet connection and the
flexible gas line provided.
WARNING: A qualified
service person must connect
fireplace to gas supply. Follow
all local codes.
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
inches 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 21. 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 a 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 22).
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.
Propane/LP
Supply Tank
External
Regulator
Figure 21- External Regulator with Vent
Pointing Down
Vent
Pointing
Down
Figure 22 - Gas Connection
CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*
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)
3" Minimum
Pipe Cap Tee
Nipple
Joint
Sediment Trap
* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer. See
Accessories, page 30.
Extension Cord
Use extension cord if needed. The cord must have
a three-prong, grounding plug and a three-hole
receptacle. Make sure cord is in good shape. It must
be heavy enough to carry the current needed. An
undersized cord will cause a drop in line voltage. This
will result in loss of power and overheating. Use a No.
16 AWG cord for lengths less than 50 feet.