13
107100
OWNER’S MANUAL
For more information, visit www.desatech.com
CHECKING GAS
CONNECTIONS
WARNING: Test all gas pip-
ing and connections for leaks
after installing or servicing. Cor-
rect all leaks at once.
WARNING: Never use an open
flame to check for a leak. Apply a
mixture of liquid soap and water
to all joints. Bubbles forming show
a leak. Correct all leaks at once.
CAUTION: Make sure exter-
nal regulator has been installed
between propane/LP supply and
heater. See guidelines under
Con-
necting to Gas Supply, page 12.
O
POSI
PO
Pressure Testing Gas Supply
Piping System
Test Pressures In Excess Of 1/2 PSIG
(3.5 kPa)
1.
Disconnect appliance with its appli-
ance main gas valve (control valve)
and equipment shutoff valve from gas
supply piping system. Pressures in ex-
cess 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 ei-
ther using compressed air or opening
propane/LP supply tank valve.
4.
Check all joints of gas supply piping
system. Apply mixture of liquid soap
and water to gas joints. Bubbles form-
ing show a leak.
5.
Correct all leaks at once.
6.
Reconnect heater and equipment
shutoff valve to gas supply. Check re-
connected fittings for leaks.
Open
Closed
Equipment
Shutoff
Valve
Figure 21 - Checking Gas Joints
Figure 20 - Equipment Shutoff Valve
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1.
Close equipment shutoff valve (see Fig-
ure 20).
2.
Pressurize supply piping system by ei-
ther using compressed air or opening
propane/LP supply tank valve.
3.
Check all joints from propane/LP sup-
ply tank to equipment shutoff valve (see
Figure 21). Apply mixture of liquid
soap and water to gas joints. Bubbles
forming show a leak.
4.
Correct all leaks at once.
Continued
INSTALLATION
Continued
Pressure Testing Heater Gas
Connections
1.
Open equipment shutoff valve (see Fig-
ure 20).
2.
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 Fig-
ure 21). Apply mixture of liquid soap
and water to gas joints. Bubbles form-
ing show a leak.
5.
Correct all leaks at once.
6.
Light heater (see Operating Heater,
pages 14 and 15). Check all other in-
ternal joints for leaks.
7.
Turn off heater (see To Turn Off Gas to
Appliance, page 14).
8.
Replace front panel.
Propane/LP
Supply Tank
Thermostat Gas
Valve Location
Equipment
Shutoff
Valve
