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LP-171 Rev. 3.3.15

F. CIRCULATORS......................................................................................................................................................................... 17

G. HYDRONIC PIPING WITH CIRCULATORS, ZONE VALVES, AND MULTIPLE HEATERS .................................................... 18

H. CIRCULATOR SIZING .............................................................................................................................................................. 18

I. ZONING WITH ZONE VALVES.................................................................................................................................................. 19

J. ZONING WITH CIRCULATORS ................................................................................................................................................ 19

K. MULTIPLE HEATERS ............................................................................................................................................................... 19

L. FILL AND PURGE HEATING SYSTEM .................................................................................................................................... 20

M. PIPING DETAILS ..................................................................................................................................................................... 21

PART 6 – PIPING WITH OPTIONAL VISION 1 SYSTEM ......................................................................................................... 28

A. VISION 1 SYSTEM PIPING ...................................................................................................................................................... 28

B. ZONING WITH ZONE VALVES USING VISION 1 .................................................................................................................... 28

C. ZONING WITH CIRCULATORS USING VISION 1 ................................................................................................................... 28

D. PIPING DETAILS WITH THE VISION 1 SYSTEM .................................................................................................................... 29

PART 7 – VENTING, COMBUSTION AIR, AND CONDENSATE REMOVAL ........................................................................... 39

A. GENERAL ................................................................................................................................................................................. 39

B. APPROVED MATERIALS FOR EXHAUST VENT AND INTAKE PIPE .................................................................................... 40

C. REQUIREMENTS FOR INSTALLATION IN CANADA .............................................................................................................. 40

D. EXHAUST VENT AND INTAKE PIPE LOCATION.................................................................................................................... 41

E. ROTATING THE FLUE ADAPTER ........................................................................................................................................... 44

F. EXHAUST VENT AND INTAKE PIPE SIZING .......................................................................................................................... 45

G. LONGER VENT RUNS ............................................................................................................................................................. 45

H. EXHAUST VENT AND INTAKE PIPE INSTALLATION ............................................................................................................ 46

I. VENTING DRAWINGS ............................................................................................................................................................... 46

PART 8 – GAS PIPING .............................................................................................................................................................. 48

A. GAS CONNECTION ................................................................................................................................................................. 48

B. GAS PIPING ............................................................................................................................................................................. 50

C. CHECK INLET GAS PRESSURE ............................................................................................................................................. 50

D. GAS VALVE .............................................................................................................................................................................. 51

PART 9 – FIELD WIRING .......................................................................................................................................................... 52

A. INSTALLATION MUST COMPLY WITH: .................................................................................................................................. 52

B. FIELD WIRING.......................................................................................................................................................................... 52

C. LINE VOLTAGE WIRING .......................................................................................................................................................... 52

D. THERMOSTAT ......................................................................................................................................................................... 52

PART 10 – FIELD WIRING – VISION 1 OPTION ...................................................................................................................... 55

PART 11 – START-UP PREPARATION.................................................................................................................................... 57

A. CHECK/CONTROL WATER CHEMISTRY ............................................................................................................................... 57

B. FREEZE PROTECTION (WHEN USED) .................................................................................................................................. 58

C. FILL AND TEST WATER SYSTEM .......................................................................................................................................... 58

D. AIR PURGING PROCEDURE FOR HEAT EXCHANGER ........................................................................................................ 58

E. PURGE AIR FROM WATER SYSTEM ..................................................................................................................................... 59

F. CHECK FOR GAS LEAKS ........................................................................................................................................................ 60

Brand	HTP
Model	MC80
Category	Heater
Language	English

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