Instructions / Assembly

ManualsBrandsWestinghouse ManualsPlumbing Product50 gal. 10 Year 76,000 BTU Liquid Propane Gas Fired Water Heater

WHL-001 REV. 9.3.14

In Canada – CGA No. B149 (latest version), from Canadian Gas Association Laboratories, 55 Scarsdale Road, Don Mills, Ontario,

Canada M3B 2R3. Also, Canadian Electrical Code C 22.1, from Canadian Standards Association, 5060 Spectrum Way, Suite 100,

Mississauga, Ontario, Canada L4W 5N6.

Code for the installation of Heat Producing Appliances (latest version), from American Insurance Association, 85 John Street, New

York, NY 11038.

The latest version of the National Electrical Code, NFPA No. 70.

NOTE: The gas manifold and controls met safe lighting and other performance criteria when undergoing tests specified in ANSI

Z21.10.3 – latest edition.

TABLE OF CONTENTS

PART 1 – GENERAL SAFETY INFORMATION .......................................................................................................................... 6

A. PRECAUTIONS ................................................................................................................................................................................................ 6

B. IMPROPER COMBUSTION .............................................................................................................................................................................. 6

C. GAS ................................................................................................................................................................................................................. 7

D. WHEN SERVICING THE HEATER ................................................................................................................................................................... 7

E. HEATER WATER ............................................................................................................................................................................................. 7

PART 2 – BEFORE YOU START ................................................................................................................................................ 7

A. WHAT’S IN THE BOX ....................................................................................................................................................................................... 7

B. HOW THE HEATER OPERATES ..................................................................................................................................................................... 7

C. OPTIONAL EQUIPMENT ................................................................................................................................................................................. 8

PART 3 – PREPARE WATER HEATER LOCATION .................................................................................................................. 9

A. BEFORE LOCATING THE HEATER ................................................................................................................................................................. 9

B. LEVELING ...................................................................................................................................................................................................... 10

C. CLEARANCES FOR SERVICE ACCESS ....................................................................................................................................................... 10

D. RESIDENTIAL GARAGE INSTALLATION ...................................................................................................................................................... 10

E. EXHAUST VENT AND INTAKE PIPE ............................................................................................................................................................. 11

1. DIRECT VENT INSTALLATION OF EXHAUST AND INTAKE ............................................................................................................................ 11

2. INDOOR COMBUSTION AIR INSTALLATION IN CONFINED OR UNCONFINED SPACE ................................................................................ 11

F. PREVENT COMBUSTION AIR CONTAMINATION ......................................................................................................................................... 12

G. REMOVING A HEATER FROM A COMMON VENT SYSTEM ....................................................................................................................... 12

H. WATER CHEMISTRY ..................................................................................................................................................................................... 13

PART 4 – HEATER PIPING ....................................................................................................................................................... 16

A. GENERAL PIPING INFORMATION ................................................................................................................................................................ 16

B. SCALDING ..................................................................................................................................................................................................... 17

C. TEMPERATURE AND PRESSURE RELIEF VALVE ...................................................................................................................................... 17

D. BACKFLOW PREVENTER ............................................................................................................................................................................. 17

E. POTABLE EXPANSION TANK ....................................................................................................................................................................... 17

F. WATER PIPING .............................................................................................................................................................................................. 18

G. AUXILIARY CONNECTIONS ......................................................................................................................................................................... 18

H. FILLING THE HEATER .................................................................................................................................................................................. 18

I. IMPORTANT NOTICE...................................................................................................................................................................................... 19

J. PIPING DIAGRAMS ........................................................................................................................................................................................ 20