5
LP-171 Rev. 4.10.14
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 .................................................................................... 39
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. DIAGRAMS FOR SIDEWALL VENTING .................................................................................................................................... 47
J. DIAGRAMS FOR VERTICAL VENTING .................................................................................................................................... 48
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
