Desa (V)VC36N Series - Manual (Page 23)

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Figure 33 - Connecting Flexible Gas Line
to Millivolt Valve
Flexible Gas Line
Do NOT Kink
Equipment
Shutoff Valve
To Gas Supply
(Natural)
To External
Regulator
(Propane/LP)
Control Valve
FIREPLACE
INSTALLATION
Continued
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
noncorrosive leak detection fluid
to all joints. Bubbles forming show
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 fireplace and its individual equip-
ment shutoff valve from gas supply piping
system. Pressures in excess of 1/2 psig (3.5 kPa)
will damage fireplace gas 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 fireplace or opening main gas
valve located on or near gas meter for natural
gas fireplace or using compressed air.
4. Check all joints of gas supply piping system.
Apply noncorrosive leak detection fluid to all
joints. Bubbles forming show a leak. Correct
all leaks at once.
5. Reconnect fireplace 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 34).
2. Pressurize supply piping system by either
opening propane/LP supply tank valve for
propane/LP gas fireplace or opening main gas
valve located on or near gas meter for natural
gas fireplace or using compressed air.
3. Check all joints from propane/LP supply tank
or gas meter to equipment shutoff valve (see
Figure 35 or Figure 36). Apply noncorrosive
leak detection fluid to all joints. Bubbles form-
ing show a leak. Correct all leaks at once.
Figure 34 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff Valve
Figure 35 - Checking Gas Joints for
Propane/LP Gas Fireplace
Propane/LP
Supply Tank
Gas Valve
Equipment Shutoff Valve
Figure 36 - Checking Gas Joints for
Natural Gas Fireplace
Gas
Meter
Gas Valve
Equipment
Shutoff Valve