Desa Firewerks VFRMV18NB Owner's Operation And Installation Manual page 15

Desa owner's operation and installation manual unvented (vent free) gas log heater vfrmv18nb, vfrmv18pb, vfrmv24nb and vfrmv24pb
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INSTALLATION
Continued
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 noncorrosive leak detection fluid to all
joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment shutoff
valve to gas supply. Check reconnected fit-
tings for leaks.
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 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.
3. Check all joints from gas meter to equipment
shutoff valve for natural gas or propane/LP sup-
ply to equipment shutoff valve for propane/LP
(see Figure 16 or 17). Apply noncorrosive leak
detection fluid to all joints. Bubbles forming
show a leak.
4. Correct all leaks at once.
Equipment
Shutoff
Valve
Figure 15 - Equipment Shutoff Valve
116412-01B
Propane/LP
Supply Tank
PRESSURE TESTING HEATER GAS
CONNECTIONS
1. Open equipment shutoff valve (see Figure 15).
2. Open main gas valve located on or near gas
3. Make sure control knob of heater is in the OFF
4. Check all joints from equipment shutoff valve
5. Correct all leaks at once.
6. Light heater (see Operating Heater, page 16).
7. Turn off heater.
Open
Closed
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Equipment
Shutoff Valve
Figure 16 - Checking Gas Joints
(Propane/LP Gas Only)
Equipment
Shutoff Valve
Gas Meter
Figure 17 - Checking Gas Joints
(Natural Gas Only)
meter for natural gas or open propane/LP
supply tank valve.
position.
to gas control (see Figures 16 and 17). Apply
noncorrosive leak detection fluid to all joints.
Bubbles forming show a leak.
Check all other internal joints for leaks.
Control Valve
Location
Control Valve
Location
15

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