Desa CGCFTN - Manual (Page 17)

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INSTALLATION
Continued
CAUTION: Make sure exter-
nal regulator has been installed
between propane/LP supply and
fireplace. See guidelines under Con-
necting to Gas Supply, page 14.
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 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
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 22).
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 supply to equipment shutoff valve
(see Figures 23 and 24). Apply a noncorrosive
leak detection fluid to gas joints. Bubbles
forming show a leak.
4. Correct all leaks at once.
Figure 22 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff
Valve
Figure 23 - Checking Gas Joints Shown
with Optional Mantel (Propane/LP Gas)
Equipment Shutoff Valve
Propane/LP
Supply
Tank
Figure 24 - Checking Gas Joints Shown
with Optional Mantel (Natural Gas)
Gas Meter
Equipment Shutoff Valve
PRESSURE TESTING FIREPLACE GAS
CONNECTIONS
1. Open equipment shutoff valve (see Figure 22).
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 23 and
24). 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, page
18). Check all other internal joints for leaks.
7. Turn off fireplace (see To Turn Off Gas to
Appliance, page 19).
8. Replace front panel.