5
LP-179 REV. 11.26.14
2. VENTING THROUGH AN EXISTING SYSTEM .................................................................................................................................................. 36
3. INDOOR COMBUSTION AIR INSTALLATION IN CONFINED OR UNCONFINED SPACE ................................................................................ 38
I. CONDENSATE REMOVAL SYSTEM ........................................................................................................................................ 40
PART 6 – WIRING ..................................................................................................................................................................... 40
A. LINE VOLTAGE INPUT ............................................................................................................................................................ 40
B. LINE VOLTAGE CONDENSATE OUTPUT ............................................................................................................................... 41
C. LOW VOLTAGE OUTDOOR SENSOR INPUT ......................................................................................................................... 41
D. ALARM CONNECTIONS .......................................................................................................................................................... 41
E. OPTIONAL 0-10 VOLT BUILDING CONTROL SIGNAL ........................................................................................................... 41
D. INTERNAL WIRING DIAGRAM ................................................................................................................................................ 42
PART 7 – GAS CONNECTIONS ............................................................................................................................................... 44
A. GAS PIPING ............................................................................................................................................................................. 44
B. GAS TABLE .............................................................................................................................................................................. 44
C. GAS VALVE .............................................................................................................................................................................. 45
PART 8 – START-UP PROCEDURE ......................................................................................................................................... 46
A. OPERATING INSTRUCTIONS ................................................................................................................................................. 46
B. OVERALL WATER HEATER AND CONTROL OPERATION ................................................................................................... 46
C. STATUS MENU ........................................................................................................................................................................ 46
D. OUTDOOR RESET ................................................................................................................................................................... 47
E. TEST MODE ............................................................................................................................................................................. 48
F. MAINTENANCE ........................................................................................................................................................................ 48
PART 9 – SHUTDOWN.............................................................................................................................................................. 49
A. SHUTDOWN PROCEDURE ..................................................................................................................................................... 49
B. VACATION PROCEDURE ........................................................................................................................................................ 49
C. FAILURE TO OPERATE ........................................................................................................................................................... 49
PART 10 – TROUBLESHOOTING ............................................................................................................................................ 49
A. ERROR CODE .......................................................................................................................................................................... 49
B. HEATER ERROR...................................................................................................................................................................... 49
C. LOCKOUT ................................................................................................................................................................................ 49
PART 11 - MAINTENANCE ....................................................................................................................................................... 54
MAINTENANCE NOTES ........................................................................................................................................................................................ 57
HTP CUSTOMER INSTALLATION RECORD FORM ............................................................................................................................................. 58
LIMITED WARRANTY .................................................................................................................................................................................................... 59
PART 1 – GENERAL SAFETY INFORMATION
A. PRECAUTIONS
This water heater is for indoor installations only. Clearance to combustible materials: 0” top, bottom, sides and back. Unit must have
room for service: 24” front and 12” sides are minimum recommended service clearances. (A combustible door or removable panel is
acceptable front clearance.) This water heater has been approved for closet installation, and installation on combustible flooring. Do not
install this water heater directly on carpeting. Use only Category IV vent systems.
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