HTP EL-110 User Manual

6
LP- 293 REV. 9.2.14
E. EXHAUST VENT AND INTAKE PIPE SIZING .......................................................................................................................... 33
F. LONGER VENT RUNS ............................................................................................................................................................. 33
G. EXHAUST VENT AND INTAKE PIPE INSTALLATION ............................................................................................................ 34
H. VENTING DRAWINGS ............................................................................................................................................................. 35
1. DIRECT VENT INSTALLATION OF EXHAUST VENT AND INTAKE PIPE ............................................................................... 35
2. VENTING THROUGH AN EXISTING SYSTEM .......................................................................................................................... 39
3. INDOOR COMBUSTION AIR INSTALLATION IN CONFINED OR UNCONFINED SPACE ...................................................... 41
PART 6 – GAS PIPING .............................................................................................................................................................. 43
A. GAS CONNECTION ................................................................................................................................................................. 43
B. GAS PIPING ............................................................................................................................................................................. 43
C. CHECK INLET GAS PRESSURE............................................................................................................................................. 44
D. BOILER GAS VALVE ............................................................................................................................................................... 45
PART 7 – FIELD WIRING .......................................................................................................................................................... 46
A. INSTALLATION MUST COMPLY WITH: .................................................................................................................................. 46
B. FIELD WIRING TERMINATIONS ............................................................................................................................................. 46
C. FIELD WIRING ......................................................................................................................................................................... 46
D. LINE VOLTAGE WIRING FOR STANDARD BOILER .............................................................................................................. 46
E. ALARM CONNECTIONS .......................................................................................................................................................... 47
F. LOW VOLTAGE CONNECTIONS FOR STANDARD BOILER ................................................................................................. 47
G. THERMOSTAT ........................................................................................................................................................................ 47
H. OUTDOOR SENSOR ............................................................................................................................................................... 47
I. INDIRECT SENSOR .................................................................................................................................................................. 48
J. OPTIONAL 0-10 VOLT BUILDING CONTROL SIGNAL ........................................................................................................... 48
K. OPTIONAL UL353 LOW WATER CUT-OFF INTERFACE KIT ................................................................................................ 48
L. WIRING OF CASCADE SYSTEM COMMUNICATION BUS .................................................................................................... 48
M. CASCADE MASTER PUMP AND SENSOR WIRING.............................................................................................................. 50
N. CASCADE FOLLOWER PUMP AND SENSOR WIRING ......................................................................................................... 50
PART 8 – START-UP PREPARATION...................................................................................................................................... 55
A. CHECK / CONTROL WATER CHEMISTRY ............................................................................................................................. 55
B. CHECK FOR GAS LEAKS ....................................................................................................................................................... 56
C. FREEZE PROTECTION (WHEN USED) .................................................................................................................................. 56
D. FILL AND TEST WATER SYSTEM .......................................................................................................................................... 56
E. PURGE AIR FROM WATER SYSTEM ..................................................................................................................................... 56
F. CHECK THERMOSTAT CIRCUIT(S) ....................................................................................................................................... 57
G. CONDENSATE REMOVAL ...................................................................................................................................................... 57
H. FINAL CHECKS BEFORE STARTING BOILER ...................................................................................................................... 58
I. CASCADE SYSTEM .................................................................................................................................................................. 58
J. LOCKOUT CONDITION ............................................................................................................................................................ 58
PART 9 – START-UP PROCEDURE ......................................................................................................................................... 59
A. CONTROL OVERVIEW ............................................................................................................................................................ 59
B. NAVIGATION OF THE DISPLAY ............................................................................................................................................. 59

HTP EL-110 Specifications

General

Brand	HTP
Model	EL-110
Category	Boiler
Language	English