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Table of Contents
I. Product Description 7
II. Specications 7
III. Before Installing 8
IV. Locating The Boiler 9
V. Mounting The Boiler 11
VI. Air For Ventilation 14
VII. Venting 15
A. Vent System Design 15
B. Design Requirements Unique to Horizontal Twin Pipe Venting Systems 22
C. Design Requirements Unique to Vertical Venting Systems 28
D. Design Requirements Unique to Split Vent Systems 36
E. Assembly of CPVC/PVC Vent Systems 44
F. Assembly of DuraVent PolyPro Vent Systems 51
G. AssemblyofSelkirkPolyueVentSystems 56
H. Assembly of Centrotherm InnoFlue Vent Systems 60
I. Assembly of Stainless Steel Vent Systems 64
J. Condensate Trap and Drain 66
K. Removing An Existing Boiler From Common Chimney 67
VIII. Gas Piping 68
IX. System Piping 70
A. General System Piping Precaution 70
B. Standard Piping Installation Requirements 71
C. Near Boiler Piping Design 73
D. Piping For Special Situations 79
X. Domestic Hot Water Piping 80
XI. Wiring 82
XII. Start-Up and Checkout 93
XIII. Operation 101
XIV. Service and Maintenance 124
XV. Troubleshooting 131
XVI. Repair Parts 140
Appendix A: Instructions for High Altitude Installation Above 2,000 ft. 153
Appendix B: Special Requirements For Side-Wall Vented Appliances
In The Commonwealth of Massachusetts 156