26
6 - COMBUSTION AIR AND VENT PIPING
Twin Pipe Maximum Vent Lengths
125/150
165/205
3" [80 mm] 3" [80 mm] 2" [ 50 mm]
Intake Vent
L1
49 ft
100 ft
85 ft
Exhaust Vent
L2
51 ft
100 ft
85 ft
Combined Vent
L1+L2
100 ft
200 ft
170 ft
Single Wall Elbows - Equivalent Length
3"
2"
45° bend
0.82 ft [0.25 m]
3 ft [0.91m]
90° bend
1.64 ft [0.50 m]
5 ft [1.5 m]
NOTE: Two pipe separated flue can run horizontal or vertical.
FIGURE 6-7 - Twin Pipe Separated Horizontal Flue
Termination
6.8 Twin Pipe Systems
Twin pipe venting allows exhaust flue and intake flue to be
separated from each other. Fresh air is drawn in at a different
area from the flue terminal location.
A.
Twin Pipe CPVC System
CPVC is approved for boiler exhaust. CPVC or PVC are both
approved for air intake.
To transition from Coaxial at the top of the boiler to Twin Pipe
CPVC/PVC a kit is available.
B.
Twin Pipe Polypropylene System
Single wall polypropylene is used for both exhaust and air
intake piping.
To transition from Coaxial at the top of the boiler to Twin Pipe
polypropylene venting an adapter kit is available.
C.
Twin Pipe Separated Flue
Exhaust and combustion air intake are not located in same
general location.
D.
Twin Pipe - Common Atmospheric Zone
Termination
FIGURE 6-8 - Twin Pipe on Roof Combustion Air On
Sidewall
Vent Terminal
Combustion Air
Ground
Level
Combustion Air
FIGURE 6-9 - Twin Pipe Flue On Sidewall, Combustion
Air On Roof
240011941 REV B, [03/31/2018]
12" (305mm)
Anticipated Snow Line
Vent - T Terminal
Summary of Contents for MAC-150
Page 2: ...MAC 205 ...
Page 4: ...MAH 165 ...
Page 65: ...61 APPENDIX A WIRING DIAGRAMS A 1 MODELS 125 Heat Only 240011941 REV B 03 31 2018 ...
Page 66: ...62 APPENDIX A WIRING DIAGRAMS A 2 MODELS 165 Heat Only 240011941 REV B 03 31 2018 ...
Page 67: ...63 APPENDIX A WIRING DIAGRAMS A 3 MODELS 150 Combi 240011941 REV B 03 31 2018 ...
Page 68: ...64 APPENDIX A WIRING DIAGRAMS A 4 MODELS 205 Combi 240011941 REV B 03 31 2018 ...
Page 69: ...65 NOTES 240011941 REV B 03 31 2018 ...
Page 70: ...66 NOTES 240011941 REV B 03 31 2018 ...
Page 81: ...9 125 WITH ZONE CIRCULATOR PUMPS 125 with Zone Circulator Pumps PN 240011430 REV G 03 31 18 ...
Page 84: ...12 125 WITH ZONE VALVES PIPING DIAGRAM 125 with Zone Valves PN 240011430 REV G 03 31 18 ...
Page 90: ...18 165 with Zone Valves 165 WITH ZONE VALVES PIPING DIAGRAM PN 240011430 REV G 03 31 18 ...
Page 94: ...22 150 205 WITH ZONE PUMPS WIRING DIAGRAM 150 205 With Zone Pumps PN 240011430 REV G 03 31 18 ...
Page 102: ...30 MODEL 125 Heat Only 125 HEAT ONLY WIRING DIAGRAM PN 240011430 REV G 03 31 18 ...
Page 103: ...31 MODEL 165 Heat Only 165 HEAT ONLY WIRING DIAGRAM PN 240011430 REV G 03 31 18 ...
Page 104: ...32 MODEL 150 Combi 150 COMBI WIRING DIAGRAM PN 240011430 REV G 03 31 18 ...
Page 105: ...33 MODEL 205 Combi 205 COMBI WIRING DIAGRAM PN 240011430 REV G 03 31 18 ...
Page 110: ...38 Low Water Cutoff Detail LOW WATER CUTOFF NO NO YES PN 240011430 REV G 03 31 18 ...
Page 111: ...39 NOTES PN 240011430 REV G 03 31 18 ...
Page 112: ......
Page 115: ......
