9
105684
OWNER’S MANUAL
For more information, visit www.desatech.com
INSTALLATION
Continued
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.
WARNING: Test all gas pip-
ing and connections for leaks
after installing or servicing. Cor-
rect all leaks at once.
CHECKING GAS
CONNECTIONS
Pressure Testing Gas Supply
Piping System
Test Pressures In Excess Of 1/2 PSIG
(3.5 kPa)
1.
Disconnect heater with its appliance
main gas valve (control valve) and
equipment shutoff valve from gas sup-
ply 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 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.
CAUTION: Make sure exter-
nal regulator has been installed
between propane/LP supply and
heater. See guidelines under
Con-
necting to Gas Supply, page 8.
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1.
Close equipment shutoff valve (see Fig-
ure 8).
2.
Pressurize supply piping system by either
using compressed air or opening propane/
LP supply tank valve.
3.
Check all joints from gas meter to equip-
ment shutoff valve (see Figure 9). Apply
mixture of liquid soap and water to gas
joints. Bubbles forming show a leak.
4.
Correct all leaks at once.
ON
POSIT
O
POS
Figure 8- Equipment Shutoff Valve
Closed
Equipment
Shutoff
Valve
Open
Figure 9 - Checking Gas Joints
Control Valve Location
Propane/LP
Supply Tank
Equipment Shutoff Valve
Continued
Pressure Testing Heater Gas
Connections
1.
Open equipment shutoff valve (see Fig-
ure 8).
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 control valve (see Figure 9).
Apply mixture of liquid soap and wa-
ter to gas joints. Bubbles forming show
a leak.
5.
Correct all leaks at once.
6.
Light heater (see Operating Heater,
pages 11 and 12). Check all other in-
ternal joints for leaks.
7.
Turn off heater (see To Turn Off Gas to
Appliance, page 12).
