Installation Manual

6
WHL-016 REV. 3.4.15
L. GLYCOL ANTIFREEZE SOLUTIONS ....................................................................................................................................... 33
M. ZONING WITH ZONE VALVES ............................................................................................................................................... 33
N. ZONING WITH CIRCULATORS ............................................................................................................................................... 33
O. MULTIPLE BOILERS ............................................................................................................................................................... 33
PART 6 – VENTING, COMBUSTION AIR, AND CONDENSATE REMOVAL ........................................................................... 34
A. GENERAL ................................................................................................................................................................................ 34
B. APPROVED MATERIALS FOR EXHAUST VENT AND INTAKE PIPE .................................................................................... 35
C. REQUIREMENTS FOR INSTALLATION IN CANADA ............................................................................................................. 35
D. EXHAUST VENT AND INTAKE PIPE LOCATION ................................................................................................................... 36
E. EXHAUST VENT AND INTAKE PIPE SIZING .......................................................................................................................... 40
F. LONGER VENT RUNS ............................................................................................................................................................. 41
G. EXHAUST VENT AND INTAKE PIPE INSTALLATION ............................................................................................................ 41
H. VENTING DRAWINGS ............................................................................................................................................................. 42
1. DIRECT VENT INSTALLATION OF EXHAUST VENT AND INTAKE PIPE ....................................................................................................... 42
2. VENTING THROUGH AN EXISTING SYSTEM ................................................................................................................................................. 45
3. INDOOR COMBUSTION AIR INSTALLATION IN CONFINED OR UNCONFINED SPACE .............................................................................. 47
PART 7 – GAS PIPING .............................................................................................................................................................. 49
A. GAS CONNECTION ................................................................................................................................................................. 49
B. GAS PIPING ............................................................................................................................................................................. 49
C. CHECK INLET GAS PRESSURE............................................................................................................................................. 50
D. BOILER GAS VALVE ............................................................................................................................................................... 51
PART 8 – FIELD WIRING .......................................................................................................................................................... 52
A. INSTALLATION MUST COMPLY WITH: .................................................................................................................................. 52
B. FIELD WIRING TERMINATIONS ............................................................................................................................................. 52
C. FIELD WIRING ......................................................................................................................................................................... 52
D. LINE VOLTAGE WIRING FOR STANDARD BOILER .............................................................................................................. 53
E. ALARM CONNECTIONS .......................................................................................................................................................... 53
F. LOW VOLTAGE CONNECTIONS FOR STANDARD BOILER ................................................................................................. 53
G. THERMOSTAT ........................................................................................................................................................................ 53
H. OUTDOOR SENSOR ............................................................................................................................................................... 54
I. INDIRECT SENSOR .................................................................................................................................................................. 54
J. OPTIONAL 0-10 VOLT BUILDING CONTROL SIGNAL ........................................................................................................... 54
K. OPTIONAL UL353 LOW WATER CUT-OFF INTERFACE KIT ................................................................................................ 55
L. WIRING OF CASCADE SYSTEM COMMUNICATION BUS .................................................................................................... 55
M. CASCADE MASTER PUMP AND SENSOR WIRING.............................................................................................................. 56
N. CASCADE FOLLOWER PUMP AND SENSOR WIRING ......................................................................................................... 56
PART 9 – START-UP PREPARATION...................................................................................................................................... 59
A. CHECK / CONTROL WATER CHEMISTRY ............................................................................................................................. 59
B. CHECK FOR GAS LEAKS ....................................................................................................................................................... 60
C. FREEZE PROTECTION (WHEN USED) .................................................................................................................................. 60
D. FILL AND TEST WATER SYSTEM .......................................................................................................................................... 60