Electrical Connections - State Water Heaters 310C Installation Manual And Owner's Manual

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Installation manual and owner's manual (52 pages)

Table Of Contents

Table of Contents

The water heater has a high-temperature shutoff switch built in as a standard safety feature (called a

Hi-Limit switch). Therefore, a "pressure only" relief valve is required.

• This unit does not come with an approved pressure relief valve.

• An approved pressure relief valve must be installed on the hot water outlet.

• The pressure relief valve must conform to the current edition of ANSI Z21.22 or CAN 1-4.4 and instal-

lation must follow local codes.

• The discharge capacity must be at least 140,000 BTU/h for the 110C model, 190,000 BTU/h for the

310C model, and 199,000 BTU/h for the 510C model.

• The pressure relief valve must be rated for a maximum of 150 psi (1 MPa).

• The discharge piping for the pressure relief valve must be directed so that the hot water cannot splash

on anyone or on nearby equipment.

• Attach the discharge tube to the pressure relief valve and run the end of the tube to within 6 in.

(152 mm) from the floor. This discharge tube must allow free and complete drainage without any

restrictions.

• If the pressure relief valve installed on the water heater discharges periodically, this may be due to a

defective thermal expansion tank or defective pressure relief valve.

• The pressure relief valve must be manually operated periodically to check for correct operation. In

doing so, the prevention of scalding due to hot water under pressure should be provided. The contact

of discharge may cause property damage and/or bodily harm.

• No valve must be placed between the relief valve and the water heater.

Follow the electrical code requirements of the local authority having jurisdiction.

In the absence of such requirements, follow the current edition of the National

Electrical Code ANSI/NFPA 70 in the U.S. or the current edition of CSA C22.1

WARNING

Canadian Electrical Code Part 1 in Canada

When servicing or replacing parts within the water heater, label all wires prior to

disconnection to facilitate an easy and error-free reconnection. Wiring errors can

cause improper and dangerous operation. Verify proper operation after servicing.

CAUTION

All concentric vent models come with a power plug.

1. The water heater requires 120 VAC, 60 Hz electrical power

supply that is properly grounded.

• A proper disconnect (i.e. on/off switch, power plug, etc.)

controlling the main power to the water heater must be

provided for service reasons. (Must comply with local

codes.)

2. The use of a surge protector is recommended in order to

protect the unit from power surges.

-Pressure relief valve-