HTP ELP-199 - Manual (Page 5)

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LP-294 REV. 2.20.14
B. LEVELING ................................................................................................................................................................................ 12
C. CLEARANCES FOR SERVICE ACCESS ................................................................................................................................. 13
D. RESIDENTIAL GARAGE INSTALLATION ................................................................................................................................ 14
E. EXHAUST VENT AND INTAKE PIPE ....................................................................................................................................... 14
F. PREVENT COMBUSTION AIR CONTAMINATION .................................................................................................................. 14
G. REMOVING A BOILER FROM A COMMON VENT SYSTEM .................................................................................................. 15
H. UNCRATING THE BOILER ...................................................................................................................................................... 15
PART 4 – BOILER PIPING ........................................................................................................................................................ 15
A. GENERAL PIPING INFORMATION .......................................................................................................................................... 16
B. RELIEF VALVE ......................................................................................................................................................................... 16
C. BACKFLOW PREVENTER ....................................................................................................................................................... 17
D. SYSTEM WATER PIPING METHODS ..................................................................................................................................... 17
E. CIRCULATORS ........................................................................................................................................................................ 17
F. HYDRONIC PIPING WITH CIRCULATORS, ZONE VALVES, AND MULTIPLE BOILERS ...................................................... 17
G. PIPING DETAILS* .................................................................................................................................................................... 18
H. PIPING INSTALLATION ........................................................................................................................................................... 24
I. CIRCULATOR SIZING ............................................................................................................................................................... 24
J. CHECK/CONTROL WATER CHEMISTRY ................................................................................................................................ 25
K. FILL AND PURGE HEATING SYSTEM .................................................................................................................................... 26
L. GLYCOL ANTIFREEZE SOLUTIONS ....................................................................................................................................... 27
M. ZONING WITH ZONE VALVES................................................................................................................................................ 27
N. ZONING WITH CIRCULATORS ............................................................................................................................................... 27
O. MULTIPLE BOILERS ................................................................................................................................................................ 27
PART 5 – VENTING, COMBUSTION AIR, AND CONDENSATE REMOVAL ........................................................................... 27
A. GENERAL ................................................................................................................................................................................. 28
B. APPROVED MATERIALS FOR EXHAUST VENT AND INTAKE PIPE .................................................................................... 28
C. REQUIREMENTS FOR INSTALLATION IN CANADA .............................................................................................................. 29
D. EXHAUST VENT AND INTAKE PIPE LOCATION.................................................................................................................... 30
E. EXHAUST VENT AND INTAKE PIPE SIZING .......................................................................................................................... 33
F. LONGER VENT RUNS ............................................................................................................................................................. 33
G. EXHAUST VENT AND INTAKE PIPE INSTALLATION ............................................................................................................ 34
H. SIDEWALL VENTING W/ TEE (INTAKE) AND COUPLING (EXHAUST) ................................................................................. 35
I. VERTICAL VENTING W/ TEE (INTAKE) AND COUPLING (EXHAUST) ................................................................................... 36
J. HORIZONTAL VENTING ........................................................................................................................................................... 37
K. UNBALANCED FLUE / VERTICAL VENT ................................................................................................................................ 38
L. VENTING THROUGH AN EXISTING SYSTEM ........................................................................................................................ 38
1. CONCENTRIC VENTING THROUGH AN EXISTING SYSTEM .................................................................................................. 39
2. VENTING AS A CHASE .............................................................................................................................................................. 40
M. INDOOR COMBUSTION AIR INSTALLATION IN CONFINED OR UNCONFINED SPACE .................................................... 40
PART 6 – GAS PIPING .............................................................................................................................................................. 42
A. GAS CONNECTION ................................................................................................................................................................. 42