Delta PG PLUS-25 - Manual (Page 43)

37
Gas Piping
SECTION VII - Gas Piping
Gas Supply Piping Connection
The gas supply piping must be installed
in accordance to all applicable local,
state and national codes and utility
requirements.
1. Remove the burner jacket hood. Refer to
Figure 27 to pipe gas supply to the burner.
a. Install a pipe union at the factory sup-
plied gas nipple, for ease of service.
b. Install a manual shutoff valve in the gas
supply piping as shown in Figure 27.
For installations in Canada the installer
must tag and identify the main shutoff
valve.
c. Install a drip leg on the gas supply line
prior to connecting to the PERFOR-
MANCE PLUS gas train as shown in
Figure 27.
2. Support the gas piping using hangers. Do
not support the piping by the unit or its
components.
3. Purge all air from the gas supply piping.
4. Before placing the PERFORMANCE
PLUS into operation, check and test all
connections for leaks.
Close the manual shutoff valve during
any pressure test with less than 13”w.c..
Disconnect the PERFORMANCE
PLUS and its gas valve from the gas
supply piping during any pressure test
greater than 13”w.c..
Do not check for gas leaks with an open
flame. Use a gas detection device or bub-
ble test. Failure to check for gas leaks
can cause severe personal injury, death
or substantial property damage.
5. Use pipe dope compatible with natural and
propane gases. Apply sparingly only to the
male threads of pipe joints so that pipe
dope does not block gas flow.
Failure to apply pipe dope as detailed
above can result in severe personal
i n j u ry, death or substantial pro p e rt y
damage.
Use a two-wrench method of tightening
gas piping near the unit and its gas valve.
Use one wrench to prevent the gas valve
line connection from turning and the sec-
ond to tighten adjacent piping. Failure
to support the gas valve connection pip-
ing could damage the valve and the gas
line components.
WARNING
WARNING
WARNING
NOTICE
Fig. 27: Recommended Gas Supply Piping