17
5.4 Trim Piping
• Temperature - Pressure Gauge. Install temperature
pressure gauge using piping provided with boiler. See
Figure 5-1.
• Some boiler models may have integral drain valve located
inside jacket directly underneath pump. Install provided
external drain valve as required.
5.5 System Piping
• Ensure caps are removed from boiler water connections.
•
See Figure 5-9 for basic system piping configurations.
•
Systems with automatic fill valves require back flow
prevention device.
• Single boiler system. See Figures 5-4, 5-5, for general
guidance. Additional considerations:
• Boiler control is designed for single central heating
pump. Installer responsible for integration of
multiple central heating pumps.
• Boiler control allows domestic hot water
prioritization. Function could be lost if central heating
pump is not directly connected to control system.
• Multiple boiler system. Considerations:
• Control system requires equivalent water
temperatures entering each boiler to properly sequence
and adjust system supply temperature.
WARNING
Burn and scald hazard. Verify all plastic caps are
removed from boiler connections. Failure to follow
these instructions could result in death or serious
injury.
!
•
Thoroughly flush all hydronic piping.
•
Secure all valves/fittings to boiler.
5 - HYDRONIC PIPING
• Ensure washers supplied are utilized.
•
Face valves and fittings to rear wall.
• Fit union bends to valves.
A. If soldering to boiler union bends, ensure bends are
not connected to the valves, otherwise internal seals
may be damaged.
B.
Verify 3/4" [22.2 mm] isolating valve with filter is
fitted to heating return connection.
C. Fit pressure relief valve connection vertically before
heating isolating valve.
• Connect system valve pipe work to the boiler.
•
Route pressure relief valve discharge piping to the floor.
Follow local code with respect to necessary distance to the
floor.
See Figure 5-2.
• Verify all valves are closed.
240011941 REV B, [03/31/2018]
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: ......
