8
103113
NATURAL GAS HEATER
VANGUARD 6000 BTU
IMPORTANT:
Hold pressure regulator with wrench when connecting it to gas piping and/
or fittings.
* An A.G.A. design certified manual shutoff valve with 1/8" NPT tap is an acceptable
alternative to test gauge connection. Purchase the optional A.G.A. design certified manual
shutoff valve from your dealer. See Accessory, page 15.
Tee Joint
Reducer
Bushing to
1/8" NPT
1/8" NPT
Plug Tap
Test
Gauge
Connection *
Pressure
Regulator
Tee
Joint
Pipe
Nipple
Cap
Sediment Trap
Heater
Cabinet
3/8" NPT
Pipe Nipple
Ground Joint Union
Manual
Shutoff
Valve *
From
External
Regulator
(4" W.C. to
10.5" W.C.
Pressure)
Figure 12 - Gas Connection
3" Minimum
CONNECTING TO
GAS SUPPLY
NOTICE: A qualified service per-
son must connect heater to gas
supply. Follow all local codes.
IMPORTANT:
Check gas line pressure
before connecting heater to gas line. Gas
line pressure must be no greater than 14
inches of water. If gas line pressure is higher,
heater regulator damage could occur.
Installation must include a manual shutoff
valve, ground joint union, and plugged 1/8"
NPT tap. Locate NPT tap within reach for
test gauge hook up. NPT tap must be up-
stream from heater (see Figure 12).
Apply pipe joint sealant lightly to male
threads. This will prevent excess sealant
from going into pipe. Excess sealant in pipe
could result in clogged heater valves.
Install sediment trap (trap) in supply line as
shown in Figure 12. Locate sediment trap
where it is within reach for cleaning. Locate
sediment trap where trapped matter is not
likely to freeze. A sediment trap traps mois-
ture and contaminants. This keeps them
from going into heater controls. If sediment
trap is not installed or is installed wrong,
heater may not run properly.
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 3/8"
diameter or greater to allow
proper gas volume to heater. If
pipe is too small, undue loss of
pressure will occur.
WARNING: Never connect
heater to private (non-utility) gas
wells. This gas is commonly
known as wellhead gas.
CAUTION: Use pipe joint seal-
ant that is resistant to liquid pe-
troleum (LP) gas.
