Instruction Manual

16
1717
DSC Series
Leak Testing
Use a soap solution or equivalent for leak testing. Leak testing solution must be non-corrosive, and be
rinsed off immediately after the leak test. Never test for leaks with an open flame. Failure to comply could
result in personal injury, property damage or death.
Always leak test the final gas assembly for gas leaks according to the procedures outlined in NFPA 54
and all local codes/or standards.
For leak testing on pressures below ½ PSI
Before leak testing, close the field installed manual shut off valve shown in Figures 2.4 and 2.5 (pg.15) on
the supply line to isolate the gas valve from the pressure. NOTE: All factory installed gas connections
have passed an approved leak test.
For leak testing on pressures above ½ PSI
When leak testing with pressures above ½ PSI (14 inches W.C.) the unit’s gas controls must be isolated
from the supply pipe. Close the field installed manuals shut off valve, disconnect the supply line to the
unit, and temporarily cap the supply line for testing purposes.
2.0 Installation • Gas Supply • Leak Testing
WARNING
!
!
Gas pressures to the appliance controls must never exceed 14 inches W.C. (1/2 PSI).
Supply pressures greater than 14 inches W.C. can damage the controls, resulting in
personal injury, property damage, or death.
WARNING
!
!
Testing for gas leaks with an open flame or other sources of ignition may lead to a fire or
explosion and cause serious injury or death. Test in accordance with NFPA or local codes.
WARNING
!
!
Failure to install, operate or service this appliance in the approved manner may result in
property damage, injury or death. This heater must be installed and serviced by trained gas
installations and service personnel only.
The installation of this heater must conform with local building codes or, in the absence of
such codes, the National Fuel Code (NFPA 54).