41
7.2 Leak Check Gas Piping
Pressure test boiler and gas connection before placing
boiler in operation.
• Pressure test over 1/2 psig (3.5 kPa). Disconnect
boiler and its individual gas shutoff valve from
gas supply system.
• Pressure test at 1/2 psig (3.5 kPa) or less.
Isolate boiler from gas supply system by closing
manual gas shutoff valve.
• Locate leakage using gas detector, noncorrosive
detection fluid, or other leak detection method
acceptable to authority having jurisdiction. Do
not use matches, candles, open flames, or other
methods that can provide ignition source.
• Correct leaks immediately and retest.
NOTICE
Sediment trap shall be located upstream of gas
controls.
7 - GAS SUPPLY & PIPING
FIGURE 7-1 GAS LINE CONNECTION WITH MANUAL MAIN
SHUTOFF VALVE WITH UNION AND SEDIMENT TRAP
Illustration shown (GMCB150)
Supplied external manual main gas
shutoff valve (shown in open position)
with field supplied union, and sediment trap
Install field supplied
manual valve
within 6 ft.(183cm)
of the boiler and
5 ft. (152 cm) above
the floor where
required by local
codes
3" (8cm)
Minimum
Sediment Trap
PN 240012363 REV. B [03/29/2019]
Содержание GMCB150
Страница 49: ...49 8 ELECTRICAL CONNECTIONS FIGURE 8 12A WIRE DIAGRAM GMHB125 CENTRAL HEAT BOILER PN 240012363 REV B 03 29 2019...
Страница 51: ...51 8 ELECTRICAL CONNECTIONS FIGURE 8 13A WIRE DIAGRAM GMCB150 COMBI BOILER PN 240012363 REV B 03 29 2019...
Страница 52: ...52 FIGURE 8 13B 8 ELECTRICAL CONNECTIONS LADDER DIAGRAM GMCB150 COMBI BOILER PN 240012363 REV B 03 29 2019...
Страница 55: ...55 8 ELECTRICAL CONNECTIONS FIGURE 8 15A WIRE DIAGRAM GMCB200 COMBI BOILER PN 240012363 REV B 03 29 2019...
Страница 56: ...56 8 ELECTRICAL CONNECTIONS FIGURE 8 15B LADDER DIAGRAM GMCB150 COMBI BOILER PN 240012363 REV B 03 29 2019...
