INSTALLATION
Continued
Install sediment trap in supply line as shown in | ||
Figure 13. 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 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. |
| |
IMPORTANT: Hold the pressure regulator with | ||
wrench when connecting it to gas piping and/or | ||
fittings. Do not over tighten pipe connection to | ||
regulator. The regulator body could be damaged. | ||
Pressure |
| |
Regulator | 3/8" NPT | |
Regulator | ||
Pipe | ||
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping and connections, internal and external to unit, for leaks after installing or servicing. Correct all leaks at once.
WARNING:Neveruseanopen flame to check for a leak. Apply a noncorrosive leak detection fluid to all joints. Bubbles form- ing show a leak. Correct all leaks at once.
CAUTION: For propane/LP gas, make sure external regula-
Bracket | Nipple |
Heater Cabinet
Connection* | Tee Joint | |
| ||
| Reducer | |
| Bushing to | |
Gauge | 1/8" NPT | |
1/8" NPT | ||
| ||
Test | Plug Tap | |
|
Ground
Joint
Union
Equipment
Shutoff
Valve *
3"
(76 mm)
Min.
Natural Gas
From Gas Meter
[7" (1.8 kPa) WC to
10.5" (2.6 kPa) WC
Pressure]
Propane/LP
From External Regulator
[11" (2.7 kPa) WC to 14"
(3.5 kPa) WC Pressure]
Figure 13 - Gas Connection
*A CSA
tor has been installed between propane/LP supply and heater. See guidelines under Connect- ing to Gas Supply, page 10.
PRESSURE TESTING GAS SUPPLY PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
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 (3.5 kPa) 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 opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air.
4.Check all joints of gas supply piping system. Apply a noncorrosive leak detection fluid to all 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.
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