Operating instructions

WARNINGS 4
Pay Attention to These Terms 4
BEFORE INSTALLATION 5
Product Receipt 5
Model Identification 5
Ratings and Certifications 5
Installations at Elevation 5
Component Locations 6
General Information 6
Time/Temperature Relationships
in Scalds 7
GENERAL SAFETY 7
INSTALLATION 8
Installation Codes 8
Equipment Base 8
Clearances 8
Combustion and Ventilation Air 9
Conventional Combustion Air Supply 13
Water Piping 14
Hydronic Heating 15
Gas Supply 19
Electrical Power Connections 20
Field Wiring Connection 22
Venting 22
Venting Installation Tips 24
Venting Configurations 24
Outdoor Installation 29
Controls 30
Heater Sequence of Operation 36
WIRING DIAGRAMS 40
Models 1005 & 1505 40
Model 2005 41
START-UP 42
Pre Start-up 42
Pre Start-up Check 42
Initial Start-up 43
Preparation 43
Start-Up 43
OPERATION 47
Lighting Instructions 47
To Turn Off Gas To Appliance 47
TROUBLESHOOTING 48
UDB Fault History 49
MAINTENANCE 49
Suggested Minimum
Maintenance Schedule 49
Preventive Maintenance
Schedule 50
APPENDIX 51
Inside Air Contamination 51
Important Instructions for the
Commonwealth of
Massachusetts 52
WARRANTIES 53
CONTENTS
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California Hot Water Supply, Inc.
[phone]
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