GSW 73992 State of California, Location Requirements, Temperature and Pressure T&P Relief Valve

IV)INSTALLATION General

Applicable Codes

In addition to the installation instructions found in this man- ual, the water heater must be installed in accordance with all local and provincial or state codes or, in the absence of local and provincial or state codes, with the latest edition of “Canadian Electrical Code” (in Canada) or NFPA-70 “National Electrical Code” (in USA).

The requirements of these documents must be carefully fol- lowed in all cases. Authorities having jurisdiction shall be consulted before installations are made. Check your phone listings for the local authorities having jurisdiction over your installation.

Important: Installation and service must be performed by a qualified service technician.

State of California

Note: The water heater must be braced, anchored, or strapped to avoid moving dur- ing an earthquake. Contact local utilities for code requirements in your area.

FAILURE TO FOLLOW THE INSTRUCTIONS IN THIS MANUAL MAY RESULT IN DEATH, SERIOUS BODILY INJURY AND/OR PROPERTY DAMAGE. THOROUGHLY READ ALL INSTRUCTIONS BEFORE YOU ATTEMPT TO INSTALL, OPERATE OR MAINTAIN THIS HEATER.

Location Requirements

Refer to Figure 2 to determine the size of the various mod- els of the water heater.

1.A clear space of 457mm (18 in.) should be allowed in front of the heater to allow access to the controls and elements.

2.A clearance of 305mm (12 in.) is sufficient clearance from the top of the heater to adjacent surfaces.

3.It is suggested that the heater be located in the center of the water system or close to the point-of-use requiring the most hot water.

4.The water heater should be located in an area not sub- ject to freezing temperatures.

5.Water heaters located in unconditioned spaces (i.e., attics, basements, etc.) may require insulation of the water piping and drain piping to protect against freezing.

6.The drain and controls must be easily accessible for operation and service.

This water heater is not intended for space heating applications.

Temperature and Pressure (T&P) Relief Valve

All water heaters must be installed with a proper tempera- ture and pressure relief valve. In the United States this valve must be design certified by a nationally recognized testing laboratory that maintains periodic inspection of the produc-

Capacity	Height	Width	Nipple Size
(litres/USG)	(meters/inches)	(meters/inches)	(inches)
184 / 50	1.31 / 51.5	0.57 / 22.25	1.5
280 / 80	1.56 / 61.5	0.62 / 24.25	1.5
420 / 119	1.65 / 64.75	0.73 / 28.5	1.5

FIGURE 2: Rough-in Dimensions

tion of listed equipment or materials as meeting the require- ments for Relief Valves and Automatic Shut-off Devices for Hot Water Supply Systems, ANSI Z21.22.

Important: Only a new temperature and pressure relief valve should be used with your water heater. Do not use an old or existing valve as it may be damaged or not adequate for the working pressure of the new water heater. Do not place any valve between the relief valve and the tank.

The T&P Valve:

•Must be connected to an adequate discharge line.

•Must not be rated higher than the working pressure shown on the data plate of the water heater.

The Discharge Line:

•Must not be smaller than the pipe size of the relief valve or have any reducing coupling installed in the discharge line.

•Must not be capped, blocked, plugged or contain any valve between the relief valve and the end of the dis- charge line.

•Must terminate a maximum of 152mm (6 in.) above a floor drain or external to the building.

•Must be capable of withstanding 121°C (250°F) without distortion.

- 5 -