Vanguard SBJ18VNA Owner's Manual - Installation
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114744-01F
14
INSTALLATION
Continued
CONNECTING TO GAS SUPPLY
WARNING: This appliance
requires a 3/8" NPT (National
Pipe Thread) inlet connection
to the control valve.
WARNING: A qualified service
person must connect heater to gas
supply. Follow all local codes.
CAUTION: Never connect
propane/LP fireplace directly
to the propane/LP supply. This
heater requires an external regu-
lator (not supplied). Install the
external regulator between the
heater and propane/LP supply.
WARNING: Never connect
natural gas fireplace to private
(non-utility) gas wells. This
gas is commonly known as
wellhead gas.
Installation Items Needed
Before installing heater, make sure you have
the items listed below.
• external regulator (supplied by installer for
propane/LP models 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 connec-
tor (if allowed by local codes) (provided)
* A CSA design-certified equipment shutoff
valve with 1/8" NPT tap is an acceptable al-
ternative to test gauge connection. Purchase
the optional CSA design-certified equipment
shutoff valve from your dealer.
For propane/LP units, 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"
* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer.
**Minimum inlet pressure for purpose of input
adjustment.
Figure 14 - Gas Connection (Remote-
Ready Models Only)
To Gas
Control
Valve
3" Minimum
Sediment Trap
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)
CSA Design-
Certified
Equipment
Shutoff Valve
With 1/8" NPT
Tap*
Approved Flexible Gas
Hose (if allowed by
local codes)
Tee Pipe
Joint Nipple Cap
of water. If you do not reduce incoming gas pres-
sure, heater control valve damage could occur.
Install external regulator with the vent pointing
down as shown in Figure 13. 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" diameter or greater to allow
proper gas volume to heater. If
pipe is too small, undue loss of
volume will occur.
Propane/LP
Supply Tank
External
Regulator
with Vent
Pointing
Down
Figure 13 - External Regulator With Vent
Pointing Down