Westinghouse WBRCNG140W Installation Manual page 5

Gas fired residential combi boiler

Installation, start-up, maintenance, parts, warranty (84 pages)

Table of Contents

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 ................................................................................................................................ 15

E. RESIDENTIAL GARAGE, CLOSET, AND ALCOVE INSTALLATIONS .................................................................................... 16

F. EXHAUST VENT AND INTAKE PIPE ....................................................................................................................................... 16

G. PREVENT COMBUSTION AIR CONTAMINATION ................................................................................................................. 16

H. REMOVING A APPLIANCE FROM A COMMON VENT SYSTEM ........................................................................................... 17

I. WALL-MOUNTING THE APPLIANCE ....................................................................................................................................... 18

J. FLOW RESTRICTOR ................................................................................................................................................................ 18

PART 5 - VENTING ................................................................................................................................................................... 20

A. INTAKE PIPE AND EXHAUST VENT GUIDELINES ................................................................................................................ 20

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

C. ALLOWED COMBINED VENT LENGTHS ............................................................................................................................... 22

D. TIGHTENING APPLIANCE COLLAR TO EXHAUST VENT AND INTAKE PIPE ..................................................................... 23

E. VENT TERMINATION .............................................................................................................................................................. 24

1. Two Pipe Roof and Sidewall Vent Terminations ..................................................................................................................... 24

2. Direct Vent, Optional Horizontal and Vertical Vent Kits ......................................................................................................... 25

3. Screen Installation ..................................................................................................................................................................... 25

PART 6 - INSTALL THE CONDENSATE DRAIN ..................................................................................................................... 26

PART 7 - GAS PIPING .............................................................................................................................................................. 27

A. GAS PIPE SIZING TABLES ..................................................................................................................................................... 27

1. Gas Pipe Sizing .......................................................................................................................................................................... 27

2. Natural Gas Pipe Sizing ............................................................................................................................................................ 27

3. LP (Liquid Propane) Gas Pipe Sizing ....................................................................................................................................... 28

B. GAS CONNECTION REQUIREMENTS ................................................................................................................................... 28

PART 8 - WATER PIPING ........................................................................................................................................................ 29

A. GENERAL PLUMBING CONNECTION GUIDELINES ............................................................................................................. 29

B. DHW PIPING ............................................................................................................................................................................ 31

C. CENTRAL HEATING PIPING SYSTEM WATER PIPING METHODS ..................................................................................... 31

D. CH AND DHW PRESSURE RELIEF VALVES ......................................................................................................................... 35

PART 9 - CONNECT ELECTRICAL POWER / INITIAL STARTUP ......................................................................................... 35

A. GENERAL OPERATING CONDITIONS ................................................................................................................................... 36

B. WIRING INFORMATION .......................................................................................................................................................... 36

C. DIP SWITCHES ....................................................................................................................................................................... 36

PART 10 - OPERATING SYSTEM INSTRUCTIONS ................................................................................................................ 42

A. CONTROL PANEL ................................................................................................................................................................... 42

WHL-012 REV. 12.17.14

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