NTI Matrix Installation And Operation Instructions Manual page 22

Installation and Operation Instructions
Strain on the gas valve and fittings may result in vibration, premature component failure
and leakage and may result in a fire, explosion, property damage, serious injury or death.
Flexible gas piping cannot be used within the boiler cabinet and cannot pass through the
cabinet wall, use rigid piping as shown in Figure 7-1. Failure to follow these instructions
may result in fire, property damage, serious injury or death.
Do not use an open flame to test for gas leaks. Failure to follow these instructions may
result in fire, property damage, serious injury or death.
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
valve could occur resulting in fire, property damage, serious injury or death.
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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.
Union
Drip Leg
Flexible Gas Line Piping
Recommended to eliminate strain on the
boiler gas components (only use if
acceptable by local codes).
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.
Matrix