5
WHL-015 REV. 12.17.14
E. WATER QUALITY .................................................................................................................................................................... 10
F. FREEZE PROTECTION ........................................................................................................................................................... 10
PART 3 – TECHNICAL SPECIFICATIONS ............................................................................................................................... 11
PART 4 – PREPARE APPLIANCE LOCATION ........................................................................................................................ 13
A. UNCRATING THE APPLIANCE ............................................................................................................................................... 13
B. BEFORE LOCATING THE APPLIANCE .................................................................................................................................. 14
C. LEVELING ................................................................................................................................................................................ 15
D. CLEARANCES FOR SERVICE ACCESS ................................................................................................................................ 16
E. RESIDENTIAL GARAGE, CLOSET, AND ALCOVE INSTALLATIONS .................................................................................... 16
F. EXHAUST VENT AND INTAKE PIPE ....................................................................................................................................... 17
G. PREVENT COMBUSTION AIR CONTAMINATION ................................................................................................................. 17
H. REMOVING A APPLIANCE FROM A COMMON VENT SYSTEM ........................................................................................... 17
PART 5 – VENTING ................................................................................................................................................................... 18
A. INTAKE PIPE AND EXHAUST VENT GUIDELINES ................................................................................................................ 18
B. APPROVED VENT MATERIALS .............................................................................................................................................. 20
C. ALLOWED COMBINED VENT LENGTHS ............................................................................................................................... 20
D. TIGHTENING APPLIANCE COLLAR TO EXHAUST VENT AND INTAKE PIPE ..................................................................... 21
E. VENT TERMINATION .............................................................................................................................................................. 22
1. Two Pipe Roof and Sidewall Vent Terminations ..................................................................................................................... 22
2. Direct Vent, Optional Horizontal and Vertical Vent Kits ......................................................................................................... 23
3. Screen Installation ..................................................................................................................................................................... 23
PART 6 – INSTALL THE CONDENSATE DRAIN ..................................................................................................................... 24
PART 7 – GAS PIPING .............................................................................................................................................................. 25
A. GAS PIPE SIZING TABLES ..................................................................................................................................................... 25
1. Gas Pipe Sizing .......................................................................................................................................................................... 25
2. Natural Gas Pipe Sizing ............................................................................................................................................................ 25
3. LP (Liquid Propane) Gas Pipe Sizing ....................................................................................................................................... 26
B. GAS CONNECTION REQUIREMENTS ................................................................................................................................... 26
PART 8 – WATER PIPING ........................................................................................................................................................ 27
A. GENERAL PLUMBING CONNECTION GUIDELINES ............................................................................................................. 27
B. DHW PIPING ............................................................................................................................................................................ 28
C. CENTRAL HEATING PIPING SYSTEM WATER PIPING METHODS ..................................................................................... 29
D. CIRCULATOR SIZING ............................................................................................................................................................. 32
E. PRESSURE RELIEF VALVE .................................................................................................................................................... 33
PART 9 – CONNECT ELECTRICAL POWER / INITIAL STARTUP ......................................................................................... 34
A. GENERAL OPERATING CONDITIONS ................................................................................................................................... 34
B. WIRING INFORMATION .......................................................................................................................................................... 34
C. DIP SWITCHES ....................................................................................................................................................................... 35
PART 10 – OPERATING SYSTEM INSTRUCTIONS ................................................................................................................ 40
A. CONTROL PANEL ................................................................................................................................................................... 40
B. LCD DISPLAY DESCRIPTIONS .............................................................................................................................................. 40