White Rodgers Zone Valve Wiring Diagram and Installation Instructions

TYPE 1311

WHITE-RODGERS

HYDRONIC ZONE VALVES

(3 WIRE)

INSTALLATION INSTRUCTIONS

Operator: Save these instructions for future use!

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY AND/OR PROPERTY DAMAGE.

DESCRIPTION

These water valves provide a low cost system of zoned tem- perature control wherever hot water is the heating medium. In new construction, the heating piping system can be laid out to produce any number of independent temperature controlled zones by use of these valves.

In existing buildings, a variety of zone heating combinations can be obtained, depending on the particular piping lay-outs. Each zone requires one water valve and one thermostat, but only one circulator is required for the entire system. New con- struction properly piped, will not require flow control valves, since the water valve itself performs this function.

Existing construction, where flow control valves have been installed, will operate quite satisfactorily without removing the existing flow control valves.

PRECAUTIONS

This zone valve motor is intended for use with a low voltage system; do not use this zone valve with a millivolt or line voltage system. If in doubt about whether your wiring is millivolt, line or low voltage, have it inspected by a qualified heating contractor or electrician.

Do not exceed the specification ratings.

All wiring must conform to local and national electrical codes and ordinances.

!CAUTION

To prevent injuries from scalding always drain system before unlatching valve assembly from body.

!CAUTION

To prevent electrical shock and/or equipment damage, disconnect electric power to system at main fuse or circuit breaker box until installation is complete.

!WARNING

Do not use on circuits exceeding specified voltages. Higher voltages will damage control and could cause shock or fire hazard.

SPECIFICATIONS

All guarantees are void if these specifications are exceeded.

Maximum water temperature: 240°F (115°C)

Maximum system pressure: 50 PSI

Differential across valve: 15 PSI Electrical Rating:

Valve Motor: 25 VAC (.40 Amp.)

Auxiliary Contacts: Do not exceed 2.0 Amp. at 25 VAC (Terminals 2 and 3)

Timing: Approximately 45 seconds from full open to full close or full close to full open.

Friction loss equivalents:

3/4" valve – 2-1/2 ft. copper tubing 1" valves – 4 ft. copper tubing

1-1/4" valves – 7 ft. copper tubing

The schematic shows the valve in the closed position. As the thermostat calls for heat, the valve motor is energized and begins to open the valve. Soon thereafter side “A” of motor switch makes with the holding contacts. This contact provides a holding circuit to prevent the valve from stopping part way through its cycle if the thermostat is changed to the satisfied

PRINCIPLE OF OPERATION

position. Just before the valve reaches the full-open position, side “B” of motor switch closes (providing a low voltage auxiliary circuit for starting burner and/or circulator). The motor stops with the valve in the open position when side “A” of motor switch breaks the holding contact. (Completing a circuit through con- tact “6” and the thermostat anticipator.)

WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS RD., ST. LOUIS, MO. 63123
(314) 577-1300, Fax (314) 577-1517	Printed in U.S.A.
9999 HWY. 48, MARKHAM, ONT. L3P 3J3
(905) 475-4653, FAX (905) 475-4625

PART NO. 37-5421B

Replaces 37-5421A

9812