5
LP- 293 REV. 9.2.14
C. GAS ............................................................................................................................................................................................ 8
D. WHEN SERVICING THE BOILER.............................................................................................................................................. 8
E. BOILER WATER......................................................................................................................................................................... 8
F. BOILER WATER CHEMISTRY* ................................................................................................................................................. 8
G. FREEZE PROTECTION FLUIDS ............................................................................................................................................... 9
PART 2 – BEFORE YOU START ................................................................................................................................................ 9
A. WHAT’S IN THE BOX ................................................................................................................................................................. 9
B. HOW BOILER OPERATES ........................................................................................................................................................ 9
C. OPTIONAL EQUIPMENT ......................................................................................................................................................... 10
PART 3 – PREPARE BOILER LOCATION ............................................................................................................................... 11
A. BEFORE LOCATING THE BOILER ......................................................................................................................................... 11
B. LEVELING AND DIMENSIONS ................................................................................................................................................ 12
C. CLEARANCES FOR SERVICE ACCESS ................................................................................................................................ 12
D. RESIDENTIAL GARAGE INSTALLATION ............................................................................................................................... 14
E. EXHAUST VENT AND INTAKE PIPE....................................................................................................................................... 14
1. DIRECT VENT INSTALLATION OF EXHAUST VENT AND INTAKE PIPE ............................................................................... 15
2. INDOOR COMBUSTION AIR INSTALLATION IN CONFINED OR UNCONFINED SPACE ...................................................... 15
F. PREVENT COMBUSTION AIR CONTAMINATION .................................................................................................................. 15
G. REMOVING A BOILER FROM A COMMON VENT SYSTEM ................................................................................................. 16
H. UNCRATING THE BOILER ...................................................................................................................................................... 17
PART 4 – BOILER PIPING ........................................................................................................................................................ 17
A. GENERAL PIPING INFORMATION ......................................................................................................................................... 17
B. RELIEF VALVE ........................................................................................................................................................................ 17
C. BACKFLOW PREVENTER ...................................................................................................................................................... 18
D. SYSTEM WATER PIPING METHODS ..................................................................................................................................... 18
E. CIRCULATORS ........................................................................................................................................................................ 19
F. HYDRONIC PIPING WITH CIRCULATORS, ZONE VALVES, AND MULTIPLE BOILERS ...................................................... 19
G. PIPING DETAILS* .................................................................................................................................................................... 19
H. PIPING INSTALLATION ........................................................................................................................................................... 24
I. CIRCULATOR SIZING ............................................................................................................................................................... 24
J. CHECK/CONTROL WATER CHEMISTRY ............................................................................................................................... 26
K. FILL AND PURGE HEATING SYSTEM .................................................................................................................................... 27
L. GLYCOL ANTIFREEZE SOLUTIONS ....................................................................................................................................... 27
M. ZONING WITH ZONE VALVES ............................................................................................................................................... 27
N. ZONING WITH CIRCULATORS ............................................................................................................................................... 28
O. MULTIPLE BOILERS ............................................................................................................................................................... 28
PART 5 – VENTING, COMBUSTION AIR, AND CONDENSATE REMOVAL ........................................................................... 28
A. GENERAL ................................................................................................................................................................................ 28
B. APPROVED MATERIALS FOR EXHAUST VENT AND INTAKE PIPE .................................................................................... 29
C. REQUIREMENTS FOR INSTALLATION IN CANADA ............................................................................................................. 29
D. EXHAUST VENT AND INTAKE PIPE LOCATION ................................................................................................................... 30
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