Desa CTR25NR - Manual (Page 12)

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INSTALLATION
Continued
Figure 16 - Checking Gas Joints for
Propane/LP Gas
Figure 14 - Equipment Shutoff Valve
Propane/LP
Supply Tank
Open
Closed
Equipment
Shutoff Valve
Figure 15 - Checking Gas Joints for
Natural Gas
Equipment
Shutoff
Valve
Gas
Meter
Thermostat Gas Valve
(Inside Heater)
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 14).
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 gas
(see Figure 15) or propane/LP supply tank for
propane/LP gas, to equipment shutoff valve
(see Figure 16). Apply a noncorrosive leak
detection fluid to all joints. Bubbles forming
show a leak.
4. Correct all leaks at once.
PRESSURE TESTING HEATER GAS
CONNECTIONS
1. Open equipment shutoff valve (see Figure 14).
2. For natural gas open main gas valve located
on or near gas meter. For propane/LP gas open
propane/LP supply tank valve.
3. Make sure control knob of heater is in the OFF
position.
4. Check all joints from equipment shutoff valve
to thermostat gas valve (see Figure 15 or 16).
Apply a noncorrosive leak detection fluid to
all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light heater (see Operating Heater, page 13).
Check all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to Appli-
ance, page 14).
8. Replace front panel.
Equipment
Shutoff
Valve
Thermostat Gas Valve
(Inside Heater)