2
CONTENTS
1 KEY TO SYMBOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 WARNINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 GENERAL WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 PRODUCT RECEIPT . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
. . . . . . . . . . . . . . . . . . . . . . . . . 7
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4.8 ADJUSTING THE HEATING WATER TEMPERATURE WITHOUT
AN OUTDOOR TEMPERATURE SENSOR CONNECTED
4.9 ADJUSTING THE HEATING WATER TEMPERATURE WITH AN
OUTDOOR TEMPERATURE SENSOR CONNECTED
4.10 ADJUSTMENT OF THE DOMESTIC HOT WATER TEMPERATURE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.12 SCALDING TIME/TEMPERATURE RELATIONSHIPS
. . . . . . . . . . . . . . . . . . . . . . 10
4.14 LIGHTS AND FAULTS / RESET PROCEDURE
5 HOW TO... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
5.1 HOW TO INCREASE THE SYSTEM PRESSURE
5.2 HOW TO SHUT DOWN THE SYSTEM FOR SHORT PERIODS
5.3 HOW TO SHUT DOWN THE SYSTEM FOR LONG PERIODS
5.4 DRAINING THE HEATING CIRCUIT OF THE BOILER
5.5 EMPTYING THE DOMESTIC HOT WATER SYSTEM
6 WHAT IF... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
6.1 WHAT IF I SUSPECT A GAS LEAK
. . . . . . . . . . . . . . . . . . . 13
6.2 WHAT IF I HAVE FREQUENTLY TO INCREASE THE SYSTEM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.3 WHAT IF THE APPLIANCE IS DUE ITS ANNUAL SERVICE
6.4 WHAT IF I NEED TO CALL A SERVICE TECHNICIAN
7 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
7.1 SUGGESTED MINIMUM MAINTENANCE SCHEDULE
7.2 ANNUAL SERVICING CHECK LIST
. . . . . . . . . . . . . . . . . . . 14
8 COMMONWEALTH OF MASSACHUSETTS. . . . . . . . . . . . .15
8.1 IMPORTANT INSTRUCTIONS FOR THE COMMONWEALTH OF
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
9 WARRANTY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16