Installation Guide
www.usaprocom.com
15200068-01A
INSTALLATION
Figure 15 - Equipment Shutoff Valve
CHECKING GAS CONNECTIONS
Open
Closed
Equipment 
Shutoff Valve
3.  Check all joints from gas meter to equip-
ment  shutoff  valve  for  natural  gas  or 
propane/LP supply  to  equipment  shutoff 
valve for propane/LP (see Figure 16 or 17). 
Apply a noncorrosive leak detection uid 
to all joints. Bubbles forming show a leak.
4.  Correct all leaks at once.
PRESSURE TESTING HEATER GAS 
CONNECTIONS
1.  Open equipment shutoff valve (see Fig-
ure 15).
2.  Open main gas valve located on or near 
gas  meter  for  natural  gas  or  open  pro-
pane/LP supply tank valve.
3.  Make sure control knob of heater is in the 
OFF position.
4.  Check  all  joints  from  equipment  shutoff 
valve to control valve (see Figure 16 or 17). 
Apply a noncorrosive leak detection uid 
to all joints. Bubbles forming show a leak.
5.  Correct all leaks at once.
6.  Light heater (see Lighting Instructions on 
page 20 or  21). Check all other  internal 
joints for leaks.
7.  Turn off heater (see To Turn Off Gas Ap-
pliance, page 21 or 22).
Control Valve 
Location
Control Valve 
Location
Equipment 
Shutoff Valve
Equipment Shutoff Valve
External Regulator
Propane/LP 
Supply Tank
Figure 16 - Checking Gas Joints for 
Propane/LP Gas
Figure 17 - Checking Gas Joints for 
Natural Gas
Gas Meter
 WARNING: Test all gas piping 
and connections, internal and 
external to unit,  for leaks after 
installing or  servicing. Correct 
all leaks at once.
 WARNING: Never use an open 
ame to check .for a leak. Apply a 
noncorrosive leak detection uid 
to all joints. If bubbles form, there 
is a leak. Correct all leaks at once.
PRESSURE TESTING GAS SUPPLY 
PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
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/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 sys-
tem. Apply  noncorrosive  leak  detection 
uid  to  all  joints.  If  bubbles  form,  there 
may be a leak.
5.  Correct all leaks at once.
6.  Reconnect heater and equipment shutoff 
valve to gas supply. Check reconnected 
ttings for leaks.
Test Pressures Equal To or Less 
Than 1/2 PSIG (3.5 kPa)
1.  Close equipment shutoff valve (see Fig-
ure 15).
2.  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.










