18
5.3 Definitions
1.
Coaxial piping
– Exhaust and air intake pipe have a
common axis.
5 - COMBUSTION AIR AND VENT PIPING
2.
Twin Pipe –
Exhaust and intake air are separate
pipes, can be terminated using single wall
terminals from the vent manufacturer or field built
configuration using elbows or tees.
5.2 Removal of Existing Boiler From Common Vent
System
When existing boiler is removed from common venting
system, common venting system is likely to be too large
for proper venting of appliances remaining connected to
it.
After removal of existing boiler, following steps shall be
followed with each appliance remaining connected to
common venting system placed in operation, while other
appliances remaining connected to common venting
system are not in operation:
• Seal any unused openings in common venting
system.
• Visually inspect venting system for proper size and
horizontal pitch. Determine there is no blockage or
restrictions, leakage, corrosion and other deficiencies
which could cause an unsafe condition.
• When practical, close all building doors, windows,
and all doors between space in which appliances
remaining connected to common venting system are
located and other spaces of building. Turn on clothes
dryer and any appliance not connected to common
venting system. Turn on exhaust fans, such as range
hoods and bathroom exhaust so they will operate at
maximum speed. Do not operate summer exhaust
fan. Close fireplace dampers.
• Turn on appliance being inspected. Follow lighting
instructions. Adjust thermostat so appliances will
operate continuously.
• Test for spillage at draft hood relief opening after
5 minutes of main burner operation. Use flame of
match or candle, smoke from cigarette, cigar or pipe.
• Determine each appliance remaining connected to
common venting system properly vents when tested
as outlined above. Then return doors, windows,
exhaust fans and any other gas-burning appliance to
their previous condition of use.
• Any improper operation of common venting system
should be corrected so installation conforms with
National Fuel Code, ANSI Z223.1/NFPA 54 and/or
Natural Gas and Propane Installation Code, CAN/
CSA B149.1. When re-sizing any portion of common
venting system, common venting system should be
re-sized to approach minimum size as determined
using appropriate tables in Chapter 13 of the National
Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or Natural
Gas and Propane Installation Code, CAN/CSA B149.1.
240013371 REV B, [10/01/2021]
Содержание MACF-115
Страница 2: ...MACF 150 ...
Страница 4: ...MAHF 125 ...
Страница 74: ...70 A 1 MODEL 100 Heat Only APPENDIX A WIRING DIAGRAMS 240013371 REV B 10 01 2021 ...
Страница 75: ...71 A 2 MODEL 125 Heat Only APPENDIX A WIRING DIAGRAMS 240013371 REV B 10 01 2021 ...
Страница 76: ...72 APPENDIX A WIRING DIAGRAMS A 3 MODEL 165 Heat Only 240013371 REV B 10 01 2021 ...
Страница 77: ...73 APPENDIX A WIRING DIAGRAMS A 4 MODEL 115 Combi 240013371 REV B 10 01 2021 ...
Страница 78: ...74 A 5 MODEL 150 Combi APPENDIX A WIRING DIAGRAMS 240013371 REV B 10 01 2021 ...
Страница 79: ...75 A 6 MODEL 205 Combi APPENDIX A WIRING DIAGRAMS 240013371 REV B 10 01 2021 ...
Страница 80: ...76 NOTES 240013371 REV B 10 01 2021 ...
Страница 81: ...77 NOTES 240013371 REV B 10 01 2021 ...
Страница 82: ...78 NOTES 240013371 REV B 10 01 2021 ...
Страница 117: ...33 MODEL 100 Heat Only 100 HEAT ONLY WIRING DIAGRAM PN 240012875 REV C 10 01 2021 ...
Страница 118: ...34 MODEL 125 Heat Only 125 HEAT ONLY WIRING DIAGRAM PN 240012875 REV C 10 01 2021 ...
Страница 119: ...35 MODEL 165 Heat Only 165 HEAT ONLY WIRING DIAGRAM PN 240012875 REV C 10 01 2021 ...
Страница 120: ...36 115 COMBI WIRING DIAGRAM MODEL 115 Comb PN 240012875 REV C 10 01 2021 ...
Страница 121: ...37 MODEL 150 Combi 150 COMBI WIRING DIAGRAM PN 240012875 REV C 10 01 2021 ...
Страница 122: ...38 MODEL 205 Combi 205 COMBI WIRING DIAGRAM PN 240012875 REV C 10 01 2021 ...
Страница 127: ...43 LOW WATER CUTOFF DETAIL LOW WATER CUTOFF NO NO YES PN 240012875 REV C 10 01 2021 ...
Страница 132: ...48 3 FAULT SOLUTION SECTIONS PN 240012875 REV C 10 01 2021 ...
Страница 135: ...51 Parameter ID Changed From Changed To Date Reason PARAMETER CHANGE HISTORY PN 240012875 REV C 10 01 2021 ...