HTP SSC-80 - When Servicing the Water Heating System; Piping

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TABLE OF CONTENTS

PART 1 – GENERAL SAFETY INFORMATION .......................................................................................................4

A. PRECAUTIONS ................................................................................................................................................................... 4

B. WHEN SERVICING THE WATER HEATING SYSTEM ....................................................................................................... 4

C. HEATER WATER ................................................................................................................................................................ 4

PART 2 – PREPARE THE WATER HEATER ...........................................................................................................4

A. SPECIFICATIONS AND PERFORMANCE RATINGS ......................................................................................................... 5

B. PERFORMANCE AND SIZING GUIDELINES ..................................................................................................................... 6

C. LOCATING THE WATER HEATER ..................................................................................................................................... 6

D. ANODE ROD ....................................................................................................................................................................... 7

PART 3 – HEATER PIPING .......................................................................................................................................7

A. PLUMBING .......................................................................................................................................................................... 7

B. BOILER CONNECTIONS .................................................................................................................................................... 7

C. COLD WATER INLET .......................................................................................................................................................... 8

D. SCALDING .......................................................................................................................................................................... 8

E. TEMPERATURE AND PRESSURE RELIEF VALVE ........................................................................................................... 9

F. HOT WATER OUTLET ........................................................................................................................................................ 9

G. POTABLE EXPANSION TANK .......................................................................................................................................... 10

H. PRESSURE DROP SIZING FOR CIRCULATOR .............................................................................................................. 10

I. INSTALLATION DIAGRAMS ............................................................................................................................................... 11

PART 4 – HEATER CONTROL AND WIRING ....................................................................................................... 16

A. CONTROL ......................................................................................................................................................................... 16

B. WIRING ............................................................................................................................................................................. 16

PART 5 – OPERATING THE HEATER .................................................................................................................. 16

PART 6 – MAINTENANCE AND TROUBLESHOOTING ....................................................................................... 17

HTP CUSTOMER INSTALLATION RECORD FORM ..................................................................................... 20