NTI Trinity TX Series Installation And Operation Manual page 29

Tx I&O Manual
When performing a pressure test on the gas line piping, be sure the boiler is disconnected
or isolated if the test pressure is expected to exceed 1/2 PSI (14" w.c.), as damage to the
gas valve could occur resulting in fire, property damage, serious injury or death.
Test all gas piping, internal and external to the boiler, for leaks. Failure to follow
these instructions may result in fire, property damage, serious injury or death.
Figure 7-1 Gas Line Connection (Typical)
Manual Gas Shutoff Valve
Should overheating occur or the gas
supply fail to shutoff, close the Manual
Gas Shutoff Valve to the boiler.
Rigid Gas Line Piping
Use only rigid gas line piping within the
boiler cabinet. Rigid piping must
protrude beyond the outside of the
cabinet wall.
Drip Leg
Union
Flexible Gas Line Piping
Recommended to eliminate strain on the
boiler gas components (only use if
acceptable by local codes).
│Gas Piping
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