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WARNINGS 4
BEFORE INSTALLATION 5
Product Receipt 5
Model Identification 5
Ratings and Certifications 5
Installations at Elevation 5
Component Locations 6
General Information 7
GENERAL SAFETY 8
Time/Temperature Relationships in
Scalds 8
INSTALLATION 9
Installation Codes 9
Equipment Base 9
Stacking 9
Clearances 11
Combustion and Ventilation Air 12
Conventional Combustion Air Supply 13
Water Piping 14
Hydronic Heating 16
Gas Supply 20
Electrical Power Connections 22
Field Wiring Connection 23
Venting 25
Changing the Flue Outlet 27
Venting Installation Tips 28
Venting Configurations 28
Outdoor Installation 33
Controls 33
Heater Sequence of Operation 34
87%-Efficiency Boilers –
Special Instructions 45
Wiring Diagrams 50
START-UP 52
Pre Start-up 52
Start-Up 53
OPERATION 56
Lighting Instructions 56
To Turn Off Gas To Appliance 56
TROUBLESHOOTING 57
MAINTENANCE 58
Suggested Minimum
Maintenance Schedule 58
Preventative Maintenance Schedule 58
APPENDIX 60
Inside Air Contamination 60
WARRANTIES 61
Type H and WH 61
Type P 62
CONTENTS
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