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 7
Time/Temperature Relationships in
Scalds 8
INSTALLATION 8
Installation Codes 8
Equipment Base 9
Clearances 9
Combustion and Ventilation Air 10
Conventional Combustion Air Supply 12
Water Piping 14
Hydronic Heating 16
Applications & Modes 17
Domestic Hot Water 19
Pool Heating 20
Gas Supply 21
Electrical Power Connections 22
Field Wiring Connection 23
Venting 28
Venting Installation Tips 31
Venting Configurations 31
Condensate Managment 36
Outdoor Installation 37
Controls 37
User Interface 40
INTERNAL FLOW DIAGRAM 45
WIRING DIAGRAMS 46
START-UP 47
Pre Start-up 47
Start-Up 47
OPERATION 52
Lighting Instructions 52
To Turn Off Gas To Appliance 52
TROUBLESHOOTING 52
MAINTENANCE 55
Suggested Minimum
Maintenance Schedule 55
Preventative Maintenance Schedule 56
Filter Maintenance 57
APPENDIX 58
Inside Air Contamination 58
IMPORTANT INSTRUCTIONS FOR THE
COMMONWEALTH OF MASSACHUSETTS
59
START-UP CHECKLIST 60
WARRANTY 61
CONTENTS
3