HTP EL-399NVWH - Manual (Page 5)

5
LP- 346 REV. 3.20.14
H. HIGH VELOCITY CIRCULATOR PUMP .................................................................................................................................. 19
I. PIPING ....................................................................................................................................................................................... 21
J. PIPING DETAILS ...................................................................................................................................................................... 23
PART 5 – VENTING, COMBUSTION AIR, AND CONDENSATE REMOVAL ........................................................................... 26
A. GENERAL ................................................................................................................................................................................ 26
B. APPROVED MATERIALS FOR EXHAUST VENT AND INTAKE PIPE .................................................................................... 27
C. REQUIREMENTS FOR INSTALLATION IN CANADA ............................................................................................................. 28
D. EXHAUST VENT AND INTAKE PIPE LOCATION ................................................................................................................... 29
E. EXHAUST VENT AND INTAKE PIPE SIZING .......................................................................................................................... 32
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. HEATER 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 HEATER ............................................................................................................. 45
E. ALARM CONNECTIONS .......................................................................................................................................................... 45
F. LOW VOLTAGE CONNECTIONS FOR STANDARD HEATER ................................................................................................ 46
G. TANK SENSOR OR MECHANICAL CONTROL ...................................................................................................................... 46
H. SYSTEM / PIPE SENSOR ....................................................................................................................................................... 47
I. OPTIONAL 0-10 VOLT BUILDING CONTROL SIGNAL ............................................................................................................ 47
J. OPTIONAL UL353 LOW WATER CUT-OFF INTERFACE KIT ................................................................................................. 47
K. WIRING OF CASCADE SYSTEM COMMUNICATION BUS .................................................................................................... 47
L. CASCADE MASTER PUMP AND SENSOR WIRING............................................................................................................... 48
M. CASCADE FOLLOWER PUMP AND SENSOR WIRING ........................................................................................................ 48
PART 8 – START-UP PREPARATION...................................................................................................................................... 53
A. CHECK / CONTROL WATER CHEMISTRY ............................................................................................................................. 53
B. CHECK FOR GAS LEAKS ....................................................................................................................................................... 53