111044-01D
For more information, visit www.desatech.com
For more information, visit www.desatech.com
16
CHECKING GAS CONNECTIONS
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 sys-
tem. 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 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 noncor-
rosive leak detection fluid to gas 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 kPa)
1.
Close equipment shutoff valve (see Figure 27).
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.
3.
Check all joints from gas meter for natural or propane/LP sup-
ply to equipment shutoff valve (see Figures 28 and 29). Ap-
ply a noncorrosive leak detection fluid to gas joints. Bubbles
forming show a leak.
4.
Correct all leaks at once.
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 flame to check for
a leak. Apply a noncorrosive leak detection fluid to all
joints. Bubbles forming show a leak. Correct all leaks
at once.
CAUTION: Make sure external regulator has been
installed between propane/LP supply and fireplace.
See guidelines under
Connecting to Gas Supply,
page 14.
INSTALLATION
Continued
Pressure Testing Fireplace Gas Connections
1.
Open equipment shutoff valve (see Figure 27).
2.
Open main gas valve located on or near gas meter for natural
gas or open propane/LP supply tank valve.
3.
Make sure control knob of fireplace is in the OFF position.
4.
Check all joints from equipment shutoff valve to thermostat
gas valve (see Figures 28 and 29). Apply a noncorrosive leak
detection fluid to gas joints. Bubbles forming show a leak.
5.
Correct all leaks at once.
6.
Light fireplace (see Operating Fireplace, pages 17 and 18).
Check all other internal joints for leaks.
7.
Turn off fireplace (see To Turn Off Gas to Appliance, page 18).
8.
Replace front panel.
Equipment
Shutoff
Valve
Figure 27 - Equipment Shutoff Valve
Figure 28 - Checking Gas Joints Shown with Optional Mantel
(Propane/LP Gas)
Equipment
Shutoff Valve
Propane/LP
Supply Tank
ON
POSITION
OFF
POSITION
Open
Closed
Figure 29 - Checking Gas Joints Shown with Optional Mantel
(Natural Gas)
Gas Meter
Equipment Shutoff Valve
INSTALLATION
Checking Gas Connections
