WARNINGS 4
BEFORE INSTALLATION 5
Product Receipt 5
Model Identification 5
Ratings and Certifications 5
Installations at Elevation 5
Component Locations 6
General Information 6
GENERAL SAFETY 7
Time/Temperature Relationships in
Scalds 7
INSTALLATION 8
Installation Codes 8
Equipment Base 8
Clearances 8
Combustion and Ventilation Air 9
Conventional Combustion Air Supply 11
Water Piping 13
Hydronic Heating 15
Applications & Modes 16
Domestic Hot Water 17
Pool Heating 19
Gas Supply 21
Electrical Power Connections 22
Field Wiring Connection 24
Venting 27
Venting Installation Tips 30
Venting Configurations 30
Outdoor Installation 35
Controls 36
User Interface 38
WIRING DIAGRAM 44
START-UP 45
Pre Start-up 45
Start-Up 46
OPERATION 50
Lighting Instructions 50
To Turn Off Gas To Appliance 50
TROUBLESHOOTING 50
MAINTENANCE 53
Suggested Minimum
Maintenance Schedule 53
Preventative Maintenance Schedule 54
Filter Maintenance 55
Filter Replacement 55
APPENDIX 56
Inside Air Contamination 56
IMPORTANT INSTRUCTIONS FOR
THE COMMONWEALTH OF
MASSACHUSETTS 57
START-UP CHECKLIST 59
WARRANTY 60
CONTENTS
3
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