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Gas-fired • Cast-iron • Hot Water Boilers
Sealed Combustion — Direct Vent
WALL MOUNT
HOT WATER BOILER
INSTRUCTION MANUAL
Contents
...............................................
Page
• Planning Ahead .........................................2
• Installation Procedures..............................4
• Operation Procedures .............................12
• Maintenance Procedures ........................15
• Troubleshooting .......................................16
REFERENCES FOR YOUR USE
Boiler Failure Codes.....................................................16
Boiler Location Requirements .......................................2
Blower Speed Calibration ...........................................13
Components Identification ............................................2
Data (Boiler) ..................................................................3
Diagnostic Indicator Light ...........................................16
Dimensions ...................................................................3
Freeze Protection .........................................................15
Gas Valve Calibration...................................................13
Indicator Light Panel ...................................................12
Input Rate Verification Procedure ...............................13
Jacket Installation ........................................................11
Lighting Instructions ....................................................20
Measuring Equipment ..................................................12
Orifice (Gas and Air) Sizes .........................................24
Purge Heating System ..................................................9
Replacement Parts .....................................................15
Safety Controls.............................................................14
Sequence of Operation ...............................................21
Thermostat Heat Anticipator .......................................11
Venting Location Requirements ....................................2
Water Treatment ..........................................................15
Wiring Diagram (Boiler) ..............................................22
Models KC-45 and KC-90
Boiler Packing List
SEE BACK PAGE OF THIS MANUAL
Additional Tools Needed
•
Differential pressure gage: 0 - 1.0" w.c. range with
.02" increments.
•
Plastic gage hookup tubing: 2 lengths of 3/16" I.D.
tubing with female service fitting adapters.
•
Microampmeter: 0-25 microamp range with
1 microamp increments.
Printed in USA 100
PUBLICATION P-40
Part No. 65-0646
Rev. G
This manual must be left with owner, hung on or
adjacent to the boiler. Owner should retain
manual for future reference.
®
Summary of Contents for Prodigy 21 KC-45
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