Chapter 6 - Gas Piping; Gas Supply Piping Connection; Fig. 13 - Recommended Gas Supply Piping - TriangleTube PRESTIGE Excellence 110 Installation & Maintenance Manual

CHAPTER 6 - GAS PIPING

6.1.

Gas Supply Piping Connection

NOTICE
The gas supply piping must be installed in ac-
cordance to all applicable local, state, national
codes, and utility requirements.
1. Install a 1/2" NPT pipe union at the gas nipple, for
ease of service.
2. Install a manual shutoff valve in the gas supply piping
as shown in Fig. 13 on the right. For installations in Can-
ada, the installer must tag and identify the main shutoff
valve.
3. Install a sediment trap (drip leg) on the gas supply
line prior to connecting to the PRESTIGE Excellence
gas train as shown in Fig. 13 on the right.
4. Support the gas piping using hangers. Do not sup-
port the piping by the unit or its components.
5. Purge all air from the gas supply piping.
6. Before placing the PRESTIGE Excellence into opera-
tion, check and test all connections for leaks.
• Close the manual shutoff valve during any pres-
sure test with less than 13"w.c..
• Disconnect the PRESTIGE Excellence and its gas
valve from the gas supply piping during any
pressure test greater than 13"w.c..
WARNING
Do not check for gas leaks with an open flame.
Use a gas detection device or bubble test. Fail-
ure to check for gas leaks can cause substantial
property damage, serious injury, or death.
7. Use pipe dope compatible with natural and pro-
pane gases. Apply sparingly only to the male
threads of pipe joints so that pipe dope does not
block gas flow.
WARNING
• Failure to apply pipe dope as detailed
above can result in substantial property
damage, serious injury, or death.
WARNING
• Use a two-wrench method when tight-
ening field piping onto the boiler piping
connections. Use one wrench to prevent
the boiler connections from turning and
the second to tighten field piping. Failure
to support the boiler piping connections
could damage piping, causing a leak, re-
sulting in substantial property damage,
serious injury, or death.
Gas Flow
External Manual
Gas Shut Off Valve
(Must Be Within 6'
of the Boiler )
Tee Fitting
Sediment Trap
Min. Length of
3"

Fig. 13 - Recommended Gas Supply Piping

Union Fitting
Cap
25