HTP EL-399 - Manual (Page 6)

6
LP- 293 REV. 5.20.14
F. LONGER VENT RUNS ............................................................................................................................................................. 32
G. EXHAUST VENT AND INTAKE PIPE INSTALLATION ............................................................................................................ 33
H. SIDEWALL VENTING .............................................................................................................................................................. 34
I. VERTICAL VENTING................................................................................................................................................................. 35
J. HORIZONTAL VENTING .......................................................................................................................................................... 36
K. UNBALANCED FLUE / VERTICAL VENT ................................................................................................................................ 37
L. VENTING THROUGH AN EXISTING SYSTEM ........................................................................................................................ 37
1. CONCENTRIC VENTING THROUGH AN EXISTING SYSTEM ................................................................................................. 38
2. VENTING AS A CHASE .............................................................................................................................................................. 39
M. INDOOR COMBUSTION AIR INSTALLATION IN CONFINED OR UNCONFINED SPACE .................................................... 40
PART 6 – GAS PIPING .............................................................................................................................................................. 42
A. GAS CONNECTION ................................................................................................................................................................. 42
B. GAS PIPING ............................................................................................................................................................................. 42
C. CHECK INLET GAS PRESSURE............................................................................................................................................. 43
D. BOILER GAS VALVE ............................................................................................................................................................... 44
PART 7 – FIELD WIRING .......................................................................................................................................................... 45
A. INSTALLATION MUST COMPLY WITH: .................................................................................................................................. 45
B. FIELD WIRING TERMINATIONS ............................................................................................................................................. 45
C. FIELD WIRING ......................................................................................................................................................................... 45
D. LINE VOLTAGE WIRING FOR STANDARD BOILER .............................................................................................................. 45
E. ALARM CONNECTIONS .......................................................................................................................................................... 46
F. LOW VOLTAGE CONNECTIONS FOR STANDARD BOILER ................................................................................................. 46
G. THERMOSTAT ........................................................................................................................................................................ 46
H. OUTDOOR SENSOR ............................................................................................................................................................... 46
I. INDIRECT SENSOR .................................................................................................................................................................. 47
J. OPTIONAL 0-10 VOLT BUILDING CONTROL SIGNAL ........................................................................................................... 47
K. OPTIONAL UL353 LOW WATER CUT-OFF INTERFACE KIT ................................................................................................ 47
L. WIRING OF CASCADE SYSTEM COMMUNICATION BUS .................................................................................................... 47
M. CASCADE MASTER PUMP AND SENSOR WIRING.............................................................................................................. 49
N. CASCADE FOLLOWER PUMP AND SENSOR WIRING ......................................................................................................... 49
PART 8 – START-UP PREPARATION...................................................................................................................................... 54
A. CHECK / CONTROL WATER CHEMISTRY ............................................................................................................................. 54
B. CHECK FOR GAS LEAKS ....................................................................................................................................................... 55
C. FREEZE PROTECTION (WHEN USED) .................................................................................................................................. 55
D. FILL AND TEST WATER SYSTEM .......................................................................................................................................... 55
E. PURGE AIR FROM WATER SYSTEM ..................................................................................................................................... 55
F. CHECK THERMOSTAT CIRCUIT(S) ....................................................................................................................................... 56
G. CONDENSATE REMOVAL ...................................................................................................................................................... 56
H. FINAL CHECKS BEFORE STARTING BOILER ...................................................................................................................... 57
I. CASCADE SYSTEM .................................................................................................................................................................. 57
J. LOCKOUT CONDITION ............................................................................................................................................................ 57