Checking Gas Connections - Procom MN100TBA-B Owner's Operation And Installation Manual

The installer must supply an external regula-
tor. The external regulator will reduce incom-
ing gas pressure. You must reduce incoming
gas pressure to between 11" and 14" 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 13. Pointing the vent down
protects it from freezing rain or sleet.
Pressure
Regulator
Ground
Joint
Union
Tee Joint
Reducer
Bushing to
1/8" NPT
1/8" NPT
Plug Tap
Tee
Joint
Sediment
Pipe
Trap
Nipple
Cap
Figure 12 - Gas Connection
* Purchase the optional CSA design-certified equipment
shutoff valve from your dealer.
WARNING: Test all gas piping
and connections for leaks after
installing or servicing. Correct
all leaks at once.
WARNING: Never use an open
flame to check for a leak. Apply
a noncorrosive leak detection
fluid to all joints. If bubbles form,
there is a leak. Correct all leaks
at once.
200051-02A
INSTALLATION
3/8" NPT
Pipe Nipple
Equipment
Shutoff Valve
3" Minimum

CHECKING GAS CONNECTIONS

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Install sediment trap in supply line as shown
in Figure 12. Place sediment trap where it is
within reach for cleaning. Place sediment trap
where trapped matter is not likely to freeze.
A sediment trap traps moisture and contami-
nants. This keeps them from going into heater
controls. If sediment trap is not installed or is
installed wrong, heater may not run properly.
Propane
Supply Tank
From External
Regulator
(11" W.C.**
to 14" W.C.
Pressure)
Figure 13 - External Regulator
with Vent Pointing Down
PRESSURE TESTING GAS SUPPLY
PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG
1. Disconnect heater with its appliance main
gas valve (control valve) and equipment
shutoff valve from gas supply piping sys-
tem. Pressures in excess of 1/2 PSIG will
damage heater regulator.
2. Cap off open end of gas pipe where equip-
ment shutoff valve was connected.
3. Pressurize supply piping system by either
opening propane supply tank valve for
propane gas or opening main gas valve
located on or near gas meter for natural
gas or using compressed air.
External
Regulator with
Vent Pointing
Down
(3.5 kPa)
13