CWI Series Manuals


Table of Contents
I.
 Product Description .................................................. 1
II.    Specifications ............................................................. 2
III.   Before Installing ......................................................... 3
IV.   Locating the Boiler ...................................................... 3
V.  Air for Combustion & Ventilation .............................. 4
VI.   Venting ....................................................................... 8
VII.  Gas Piping ................................................................ 11
VIII. System Piping .......................................................... 12
IX. Tankless Heater Piping.......................................................17
X.  Wiring ........................................................................ 19
XI.    Start-Up & Checkout ............................................... 25
XII.   Service & Maintenance .......................................... 34
XIII.  Troubleshooting ..................................................... 36
XIV. Parts ......................................................................... 43
Appendix A: Knockdown Boiler Assembly...........................49
I  Product Description
The CWI series boilers are low pressure cast iron gas fired hot water boilers designed for use in closed hot water heating
systems. These boilers are Category I draft diverter equipped appliances, which must be vented by natural draft using a lined
masonry or listed metal chimney system. An adequate supply of air for combustion, ventilation and dilution of flue gases must
be available in the boiler room.
The CWI may be used on forced or gravity hot water heating systems. It is available with an optional tankless heater for
domestic hot water generation.
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