Checking Gas Connections - Procom ML170EPC Owner's Operation And Installation Manual

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Figure 12 -Gas Connection
*A CSA/AGA design-certified equipment shutoff valve with 1/8
is an acceptable alternative to test gauge connection. Purchase the optional
CSA/AGA design-certified equipment shutoff valve from your dealer.
State of Massachusetts : The installa-
tion must be made by a licensed
plumber or gas fitter in the Common-
wealth of Massachusetts.
Sellers of unvented propane or natural
gas-fired supplemental room heaters
shall provide to each purchaser a copy
of 527 CMR30 upon sale of the unit.
In the State of Massachusetts,unvented
propane and natural gas-fired space
heaters shall be prohibited in bed-
rooms and bathrooms.
IMPORTANT: Install an equipment
shut off valve in an accessible
location. The equipment shutoff
valve is for turning on or shutting
off the gas to the appliance.
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 in supply line
as shown in Figure 12. Locate
sediment trap where it is within
reach for cleaning. Locate sedi-
ment trap where trapped matter is
not likely to freeze. A sediment trap
traps moisture 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.
CHECKING GAS
CONNECTIONS
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 mixture of liquid soap
and water to al joints. Bubbles
forming show a leak. Correctall
leaks at once.
CAUTION:
Make sure exter-
nal regulator has been installed be-
tween gas supply and heater. See
guidelines under Connecting to Gas
Supply.
10
Pressure Testing Gas Supply
Piping System
Test Pressures In Excess Of
1/2 PSIG (3.5 K Pa)
1. Disconnect appliance with its
appliance main gas valve
(control valve) and equipment
shutoff valve from gas supply
piping system. Pressures in
excess of 1/2 psig will damage
heater regulator.
2. Cap off open end of gas pipe
where equipment shutoff valve
was connected.
3. Pressurize supply piping
system by either using com
pressed air or opening
propane/LP supply tank valve.
4. Check all joints of gas supply
piping system. Apply mixture of
liquid soap and water to gas
"
NPT tap
joints. Bubbles forming show
a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment
shutoff valve to gas supply. Check
reconnected fittings for leaks.
Test Pressures Equal To or
Less Than 1/2 PSIG (3.5 K Pa)
1. Close equipment shutoff valve
(see Figure 13).
2. Pressurize supply piping system
by either using compressed air
or opening propane/LP supply
tank valve.
3. Check all joints from propane/LP
supply tank to equipment shutoff
valve (see Figure 14). Ap ply
mixture of liquid soap and water
to gas joints. Bubbles forming
show a leak.
4. Correct all leaks at once.