41
7.3 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.
7.4 Gas Orifice
- See Figure 7-2
• Models 75, 100, 115 = 4.6 mm ( Natural & LP)
• Models 125, 150 = 5.8 mm ( Natural & LP)
• Models 165, 205 = 9.0 mm ( Natural & LP)
Figure 7-1 - Gas Piping
FIGURE 7-2 Gas Orifice Location
Gas Valve
7 - GAS SUPPLY PIPING
NOTICE
Sediment trap shall be located upstream of gas
controls.
Gas Orifice (Stamped
Side Down - Toward gas
valve)
240013509 REV A, [03/15/2022]
Summary of Contents for Dunkirk DCBF
Page 2: ...DCCF 150...
Page 4: ...DCBF 125...
Page 38: ...34 FIGURE 6 2 Piping Diagram LWCO Location 6 HYDRONIC PIPING 240013509 REV A 03 15 2022...
Page 77: ...73 A 1 MODEL 75 100 Heat Only APPENDIX A WIRING DIAGRAMS 240013509 REV A 03 15 2022...
Page 78: ...74 A 2 MODEL 125 Heat Only APPENDIX A WIRING DIAGRAMS 240013509 REV A 03 15 2022...
Page 79: ...75 APPENDIX A WIRING DIAGRAMS A 3 MODEL 165 Heat Only 240013509 REV A 03 15 2022...
Page 80: ...76 APPENDIX A WIRING DIAGRAMS A 4 MODEL 115 Combi 240013509 REV A 03 15 2022...
Page 81: ...77 A 5 MODEL 150 Combi APPENDIX A WIRING DIAGRAMS 240013509 REV A 03 15 2022...
Page 82: ...78 A 6 MODEL 205 Combi APPENDIX A WIRING DIAGRAMS 240013509 REV A 03 15 2022...
Page 117: ...33 PN 240012875 REV D 03 15 2022 MODEL 75 100 HEAT ONLY 75 100 HEAT ONLY WIRING DIAGRAM...
Page 118: ...34 PN 240012875 REV D 03 15 2022 MODEL 125 HEAT ONLY 125 HEAT ONLY WIRING DIAGRAM...
Page 119: ...35 PN 240012875 REV D 03 15 2022 MODEL 165 HEAT ONLY 165 HEAT ONLY WIRING DIAGRAM...
Page 120: ...36 PN 240012875 REV D 03 15 2022 115 COMBI WIRING DIAGRAM MODEL 115 COMBI...
Page 121: ...37 PN 240012875 REV D 03 15 2022 MODEL 150 COMBI 150 COMBI WIRING DIAGRAM...
Page 122: ...38 PN 240012875 REV D 03 15 2022 MODEL 205 COMBI 205 COMBI WIRING DIAGRAM...
Page 128: ...44 PN 240012875 REV D 03 15 2022 LOW WATER CUTOFF LOW WATER CUTOFF DETAIL NO NO YES...
Page 133: ...49 PN 240012875 REV D 03 15 2022 3 FAULT SOLUTION SECTIONS...
