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GB300 BOILER INSTALLATION AND OPERATION INSTRUCTIONS
Figure 100 | Gas Supply Piping | |
| TO GAS SUPPLY | |
MANUAL | PILOT SHUTOFF VALVE | |
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SHUTOFF | GAS PRESSURE | |
VALVE | ||
TEST TAPPING | ||
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| PILOT FILTER | |
| PILOT GAS PRESSURE | |
| REGGULATOR |
ELECTRICAL WIRING
Electrical Power Connections
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation! Verify proper operation after servicing.
The electrical connections to this boiler must be made in accordance with all applicable local codes and the latest revision of the National Electrical Code, ANSI/
INSTALL MANUAL SHUTOFF VALVE 5FT. ABOVE FLOOR WHERE REQUIRED BY LOCAL CODES.
TO PILOT(S) | GROUND | ||||||||||
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TO GAS
CONTROL(S)
SEDIMENT TRAP & DRIP LEG ( TO EXTEND TO FLOOR )
When applicable, provisions for vent, bleed and gas relief lines must be made in accordance with the latest revision of ANSI Z223.1.
Safe lighting and other performance criteria were met with the gas manifold and control assembly provided on the boiler. All gas connections MUST be leak tested before putting the boiler into operation.
WARNING: Never use an open flame to test for gas leaks. Always use an approved leak detection method. Failure to comply with this warning can cause extensive property damage, severe personal injury or death!
Whenever the gas supply piping is pressure tested the boiler gas controls must be protected. If the test pressure is equal to, or less than 1/2 psig (3.5 kPa) isolate the boiler by closing it's manual shut off valve. If the test pressure is greater than, or equal to 1/2 psig (3.5 kPa), disconnect the boiler and its individual shut- off valve.
Line voltage field wiring of any controls or other devices must conform to the temperature limitation of type T wire at 95°F(35°C) above room temperature. Use copper conductors with a minimum size of #14 awg.
The incoming line voltage is connected to the boiler using the supplied junction box and transformer. All high voltage connections must be contained inside the junction box leaving only 24 volt termination exposed. The junction box MUST be located on the side were the boiler controls are located and on the jacket panel in the upper right hand corner (1/2" max from the top and 1/2" max from the front side of the jacket panel). Failure to mount the junction box and transformer in this area will cause wire harness length to not be of the proper size, resulting in the inability to connect the termination points and harnesses together. See Figure 101 Transformer Location.
Figure 101 | Transformer Location |
