Table Of Contents - Westinghouse WGRTNG199 Nstallation & Maintenance Manual

Residential tankless water heater

User's information manual (12 pages)

Table of Contents

INSTALLATIONS MUST COMPLY WITH:

Local, state, provincial, and national codes, laws, regulations and ordinances.

The latest version of the National Fuel Gas Code, ANSI Z223.1, from American Gas Association Laboratories, 8501 East Pleasant

Valley Road, Cleveland, OH 44131.

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 the water heater underwent tests specified

in ANSI Z21.10.3 - latest edition.

PART 1 - ITEMS SHIPPED WITH THE WATER HEATER ......................................................................................................... 6

PART 2 - SAFETY REGULATIONS ........................................................................................................................................... 6

A. OPERATION AND INSTALLATION WARNINGS ....................................................................................................................... 6

C. IMPROPER COMBUSTION ....................................................................................................................................................... 8

D. GAS ............................................................................................................................................................................................ 8

E. WHEN SERVICING THE WATER HEATER .............................................................................................................................. 8

F. WATER QUALITY....................................................................................................................................................................... 8

G. FREEZE PROTECTION ............................................................................................................................................................. 8

PART 3 - TECHNICAL SPECIFICATIONS ................................................................................................................................. 9

PART 4 - PREPARE WATER HEATER LOCATION ................................................................................................................ 11

A. BEFORE LOCATING THE WATER HEATER .......................................................................................................................... 12

B. LEVELING ................................................................................................................................................................................ 13

C. CLEARANCES FOR SERVICE ACCESS ................................................................................................................................ 13

D. RESIDENTIAL GARAGE INSTALLATION ............................................................................................................................... 13

E. EXHAUST VENT AND INTAKE PIPE....................................................................................................................................... 13

F. PREVENT COMBUSTION AIR CONTAMINATION .................................................................................................................. 14

G. REMOVING A WATER HEATER FROM A COMMON VENT SYSTEM .................................................................................. 14

H. UNCRATING THE WATER HEATER ....................................................................................................................................... 15

I. WALL-MOUNTING THE WATER HEATER ............................................................................................................................... 15

PART 5 - VENTING ................................................................................................................................................................... 16

A. INTAKE PIPE AND EXHAUST VENT GUIDELINES ................................................................................................................ 16

B. APPROVED VENT MATERIALS .............................................................................................................................................. 18

C. ALLOWED SCHEDULE 40 VENT LENGTHS (PVC, CPVC, PP) ............................................................................................. 18

D. TIGHTENING WATER HEATER COLLAR TO EXHAUST VENT AND INTAKE PIPE ............................................................. 19

E. VENT TERMINATION .............................................................................................................................................................. 19

1. Two Pipe Roof and Sidewall Vent Terminations ..................................................................................................................... 19

2. Direct Vent, Optional Horizontal and Vertical Vent Kits ......................................................................................................... 20

WHL-004 REV. 12.17.14