Installation Guide
17
INSTALLATION
Install sediment trap in supply line as shown 
(See Fig. 20). 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 contaminants. 
This keeps them from going into heater controls. 
If sediment trap is not installed or is installed 
wrong, heater may not run properly.
Fig. 20 - Gas Connection
CHECKING GAS CONNECTIONS 
 WARNING: Test all gas piping and connections for leaks after installing or servicing. Correct all 
leaks immediately. 
 WARNING: Never use an open ame to check for a leak. Apply a 50/50 mixture of liquid soap and 
water to all joints. If bubbles form, there may be a leak. Correct all leaks immediately.
Pressure Testing Gas Supply Piping System
Test Pressures In Excess Of 1/2 PSIG ( 3.5kPa )
The appliance and its appliance main gas valve must be disconnected from the gas supply piping 
system during any pressure testing of that system at test pressures in excess of ½ psi (3.5 kPa).
Pressure Testing Gas Supply Equal To or less than
1/2 PSIG ( 3.5kPa )
The appliance must be isolated from the gas supply piping system by closing its equipment shut-off 
valve during any pressure testing of the gas supply piping system at test pressures equal to or less 
than 
½ psi (3.5 kPa).
Leak Testing Heater Gas Internal Connections
1. Open equipment shutoff valve (See Fig. 21).
2. Make sure control knob of heater is in the OFF position.
3. Open gas supply tank valve (LP systems).
4. Check all joints from equipment shutoff valve to control 
 valve. Apply 50/50 mixture of 
 liquid soap and water to gas joints. If bubbles form, there 
 may be a leak.
5. Light heater (see Operation, page 18). Check all other 
 internal joints for leaks.
6. Turn off heater (see "To Turn Off Gas to Appliance," 
 page 19).
Fig. 21 - Equipment Shut -off Valve 










