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TABLE OF CONTENTS
PRODUCT AND SAFETY INFORMATION ......................................................................... VII
CHAPTER 1 - PRE-INSTALLATION ...................................................................................... 1
1.1. Codes Compliance .......................................................................................................................... 1
1.2. Codes Restrictions .......................................................................................................................... 1
1.3. Operating Restrictions .................................................................................................................... 1
1.4. Locating Water Heater ....................................................................................................................2
1.5. Recommended Clearances ............................................................................................................2
CHAPTER 2 - INSTALLATION - PIPING .............................................................................. 3
2.1. Temperature & Pressure (T&P) Relief Valve .................................................................................3
2.1.1 Standard Installation ............................................................................................................. 3
2.1.2 Commonwealth of Massachusetts Installation ..................................................................3
2.1.3 T&P Relief Valve Discharge Piping .......................................................................................3
2.2. Drain Valve .......................................................................................................................................4
2.2.1 Standard Installation ............................................................................................................. 4
2.2.2 Commonwealth of Massachusetts Installation ..................................................................4
2.3. Manual Air Vent ...............................................................................................................................4
2.4. Thermal Expansion .........................................................................................................................4
2.5. Water Hammer ................................................................................................................................4
2.6. Vacuum Breaker ..............................................................................................................................4
2.7. General Piping .................................................................................................................................4
2.8. Domestic Piping ..............................................................................................................................4
2.9. Thermostatic Mixing Valve .............................................................................................................5
2.10. Recirculation Piping. .......................................................................................................................5
2.11. Multiple Water Heater Systems .....................................................................................................5
2.12. Boiler Piping.....................................................................................................................................6
CHAPTER 3 - INSTALLATION - WIRING ........................................................................... 15
3.1. Wiring Requirements .................................................................................................................... 15
3.2. Circulators .....................................................................................................................................15
3.3. Zone Valves....................................................................................................................................15
3.4. Snap Set Connection .................................................................................................................... 15
CHAPTER 4 - WATER HEATER START-UP ....................................................................... 21
4.1. Filling the Inner (Domestic Water) Tank ...................................................................................... 21
4.2. Filling the Outer (Boiler Water) Tank ........................................................................................... 21
4.3. Adjusting the Water Heater Thermostat .................................................................................... 22