Desa EFS33NR EN - Manual (Page 13)

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Figure 20 - Attaching Flexible Gas Lines Together
Flexible Gas Line from
Fireplace Gas Regulator
To Fireplace
Gas Regulator
Equipment Shutoff Valve
Provided by Installer
Propane/LP
To External
Regulator
Natural Gas
To Gas Meter
INSTALLATION
Continued
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 com-
pressed air.
4. Check all joints of gas supply piping system. Apply noncorrosive
leak detection fluid to all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect fireplace and equipment shutoff valve to gas sup-
ply. 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 21).
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 com-
pressed air.
3. Check all joints from gas meter to equipment shutoff valve for
natural gas or propane/LP supply to equipment shutoff valve
for propane/LP (see Figures 22 and 23, page 14). Apply non-
corrosive leak detection fluid to all joints. Bubbles forming
show a leak.
4. Correct all leaks at once.
Pressure Testing Fireplace Gas Connections
1. Open equipment shutoff valve (see Figure 21).
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 gas control
valve (see Figures 22 or 23, page 14). Apply noncorrosive leak
detection fluid to all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light fireplace (see Operating Fireplace, pages 15 through 17.
Check all other internal joints for leaks.
7. Turn off fireplace (see To Turn Off Gas to Appliance, page 16).
INSTALLATION
Connecting Fireplace to Gas Supply (Cont.)
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: 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 Fireplace to Gas
Supply, page 12.
Pressure Testing gas Supply Piping system
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
1. Disconnect fireplace with its main gas valve (control valve) and
equipment shutoff valve from gas supply piping system. Pres-
sures in excess of 1/2 psig will damage fireplace regulator.
2. Cap off open end of gas pipe where equipment shutoff valve
was connected.
CHECKING GAS CONNECTIONS
Figure 21 - Equipment Shutoff Valve
ON
POSITION
OFF
POSITION
Open
Closed
Equipment
Shutoff
Valve
4. Attach the flexible gas line to gas supply (see Figure 20). Check
tightness of flexible gas line attached to gas regulator of fire-
place (see Figure 20).
5. Check all gas connections for leaks. See Checking Gas Con-
nections.
6. Replace log base assembly back into fireplace. Feed flexible
gas line into fireplace base area while replacing log base as-
sembly. Make sure the entire flexible gas line is in fireplace
base area. Reattach log base assembly to fireplace with screws
removed in step 2, page 12.