Instructions / Assembly

ManualsBrandsWestinghouse ManualsHeating, Ventilation, and Air ConditioningCondensing 93.2% Combination Natural Gas Floor Mount Boiler/Water Heater with 140,000 BTU Input

WHL-015 REV. 8.24.16

E. WATER QUALITY .................................................................................................................................................................... 10

F. FREEZE PROTECTION ........................................................................................................................................................... 10

G. SCALDING ............................................................................................................................................................................... 10

H. HIGH ELEVATION INSTALLATIONS....................................................................................................................................... 10

PART 3 – TECHNICAL SPECIFICATIONS ............................................................................................................................... 11

PART 4 – PREPARE APPLIANCE LOCATION ........................................................................................................................ 14

A. UNCRATING THE APPLIANCE ............................................................................................................................................... 14

B. BEFORE LOCATING THE APPLIANCE .................................................................................................................................. 15

C. LEVELING ................................................................................................................................................................................ 16

D. CLEARANCES FOR SERVICE ACCESS ................................................................................................................................ 17

E. RESIDENTIAL GARAGE AND CLOSET INSTALLATIONS ..................................................................................................... 17

F. EXHAUST VENT AND INTAKE PIPE ....................................................................................................................................... 18

G. PREVENT COMBUSTION AIR CONTAMINATION ................................................................................................................. 18

H. REMOVING A APPLIANCE FROM A COMMON VENT SYSTEM ........................................................................................... 18

PART 5 – VENTING ................................................................................................................................................................... 19

A. INTAKE PIPE AND EXHAUST VENT GUIDELINES ................................................................................................................ 19

B. APPROVED VENT MATERIALS .............................................................................................................................................. 21

C. ALLOWED COMBINED VENT LENGTHS ............................................................................................................................... 21

D. TIGHTENING APPLIANCE COLLAR TO EXHAUST VENT AND INTAKE PIPE ..................................................................... 22

E. VENT TERMINATION .............................................................................................................................................................. 23

1. Direct Vent, Two Pipe Roof and Sidewall Vent Terminations ................................................................................................ 23

2. Direct Vent, Optional Horizontal and Vertical Vent Kits ......................................................................................................... 24

3. Screen Installation ..................................................................................................................................................................... 24

4. Power Vent, Indoor Combustion Air Installation in Confined or Unconfined Space ........................................................... 25

PART 6 – INSTALL THE CONDENSATE DRAIN ..................................................................................................................... 27

PART 7 – GAS PIPING .............................................................................................................................................................. 28

A. GAS PIPE SIZING TABLES ..................................................................................................................................................... 28

1. Gas Pipe Sizing .......................................................................................................................................................................... 28

2. Natural Gas Pipe Sizing ............................................................................................................................................................ 28

3. LP (Liquid Propane) Gas Pipe Sizing ....................................................................................................................................... 29

B. GAS CONNECTION REQUIREMENTS ................................................................................................................................... 29

PART 8 – WATER PIPING ........................................................................................................................................................ 31

A. GENERAL PLUMBING CONNECTION GUIDELINES ............................................................................................................. 31

B. DHW PIPING ............................................................................................................................................................................ 32

C. CENTRAL HEATING PIPING SYSTEM WATER PIPING METHODS ..................................................................................... 33

D. CIRCULATOR SIZING ............................................................................................................................................................. 38

E. PRESSURE RELIEF VALVE .................................................................................................................................................... 38

PART 9 – CONNECT ELECTRICAL POWER / INITIAL STARTUP ......................................................................................... 39

A. GENERAL OPERATING CONDITIONS ................................................................................................................................... 39

B. WIRING INFORMATION .......................................................................................................................................................... 39

C. DIP SWITCHES ....................................................................................................................................................................... 40