3
Table of Contents
I. Product Description 4
II. Specications 4
III. Before Installing 5
IV. Locating The Boiler 6
V. Mounting The Boiler 8
VI. Air For Ventilation 11
VII. Venting 12
A. Vent System Design 12
B. Design Requirements Unique to Horizontal Twin Pipe
Venting Systems 18
C. Design Requirements Unique to Vertical Venting Systems 24
D. Design Requirements Unique to Split Vent Systems 32
E. Assembly of CPVC/PVC Vent Systems 39
F. Assembly of DuraVent PolyPro Vent Systems 46
G.AssemblyofSelkirkPolyueVentSystems 51
H.AssemblyofCentrothermInnoueVentSystems 55
I. Condensate Trap and Drain 59
J. Removing An Existing Boiler From Common Chimney 60
VIII. Gas Piping 62
IX. System Piping 64
A. General System Piping Precaution 64
B. Near Boiler Piping Design 65
C. Standard Piping Installation Requirements 73
D. Piping For Special Situations 75
X. Wiring 76
XI. Start-up and Checkout 84
XII. Operation 91
XIII. Service and Maintenance 106
XIV. Troubleshooting 113
XV. Parts 121
Appendix A: LP Gas Conversion Instructions 136
Appendix B: Special Requirements For Side-Wall 142
Vented Appliances In The Commonwealth
of Massachusetts