Honeywell RA889A User Manual

RA889A

Switching Relay

PRODUCT DATA

FEATURES

• High load switching capability.

• Troubleshooting LED.

• Push-to-test button.

• Replaceable transformer fuse.

• Long-life DC relay drive control technology.

• Relay for use with external 24 Vac or 24 Vdc supply, with line-voltage control, or with internal 24V transformer supply.

• One model replaces many Honeywell models. (See Table 1 Replacement Cross Reference.)

APPLICATION

The RA889A Switching Rel ay provides intermedi ate switching of line- and low-voltage devices from a line- or low-voltage controller and is typically applied in hydronic heating systems.

Contents

Application ........................................................................ 1

Features ........................................................................... 1

Specifications ................................................................... 2

Ordering Information ........................................................ 2

Installation ........................................................................ 3

Mounting ........................................................................... 3

Wiring ............................................................................... 4

Operation .......................................................................... 4

Checkout .......................................................................... 4

Troubleshooting ............................................................... 4

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RA889A SWITCHING RELAY

SPECIFICATIONS

IMPORTANT

The specifications given in this publication do not include normal manu facturi ng tole rances. Th eref ore, this unit may not exactly match the listed specifications. Also, this product is tested and calibrated under closely controlled conditions, and some minor differences in performance can be expected if those conditions are changed.

TRADELINE® Model:

RA889A Switching Relay with 24V

controller for switching one-line voltage load.

Electrical Ratings:

Voltage: 120 Vac, 60 Hz. Thermostat Heat Anticipator Setting : 0.12A.

Transformer Ratings:

Primary: 120 Vac, 60 Hz. Secondary: 24 Vac, 12 VA maximum, 9 VA available for exter-

nal loads. Secondary protected by replaceable 1A automotive fuse.

Contact Ratings:

15 AFL, 30 ALR; maximum connected load

2000 VA.

Temperature Ratings:

Ambient: -20°F to 120°F (-29°C t o

49°C).

Humidity Ratings: Switching Action:

0 to 90% rh, non-condensing.

Spdt, plus Powerpile® rated low voltage

Spst relay.

Electrical Connections:

No. 8 captivated wire clamp screw

terminals.

Finish:

Zinc plated steel.

Knockouts:

Case Bottom: Three 1/2 in. (13 mm) for conduit box. Case Top: One 7/8 in. (22 mm) for wiring.

Approvals:

Underwriters Laboratories Inc. Listed: File no. E4436, Guide

no. XAPX.

Canadian Underwriters Laboratories Inc. Listed: Guide no.

XAPX7.

Dimensions:

7/8(22) DIAMETER

7/32 (6) DIAMETER MOUNTING HOLE

KNOCKOUT FOR 1/2 (13) CONDUIT (3)

Fig. 1. RA889A dimensions in in. (mm).

See Fig. 1.

1-3/8 (35)

3/16 (5) DIAMETER 3/8 (10) DIAMETER

1-1/16

(27)

4-7/16 (118)

3-11/16 (94) 5/16

1-1/4 (32)

(8)

2-1/8

(54)

KEYHOLE TYPE MOUNTING HOLE

5-3/8 (137)

6-1/4

(159)

5/16 (8)

3-1/2

2-3/16

(56)

M17512

(89)

ORDERING INFORMATION

When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the TRADELINE® Catalog or price sheets for complete ordering number.

If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:

Your local Home and Building Control Sales Office (check white pages of your phone directory).

Home and Building Control Customer Logistics Honeywell Inc., 1885 Douglas Drive North

Minneapolis, Minnesota 55422-4386 (612) 951-1000 In Canada—Honeywell Limited/Honeywell Limitée, 155 Gordon Baker Road, North York, Ontario M2H 3N7. International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

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RA889A SWITCHING RELAY

Cross Reference:

models. See Table 1 for additional cross reference information.

Thermostat Compatibility:

and most electromechanical 2- or 3-wire. Select thermostats with 0.12A heating anticipator setting to match the electrical rating of the switching relay.

Manu-

facturer Model

Honeywell RA889A L1 L2 COM N.O. N.C. X1 X2 W(T) R(T) C —

Honeywell

RA889A has one set of COM/N.O. relay contacts. Use R8845U if two sets are required.

RA89A has lower output load rating. Check load requirements.

The RA889A replaces many Honeywell

All Honeywell electromechanical

Table 1. RA889A Replacement Cross Reference.

Connections

Input Line

Voltage Power Relay

RA89A R182A

R182B 1 2 8 6 7 B R Requires jumper between X1 and R182C

R482B 1 2 8 6 7 ——Jumper R(T) to R482C R482J

R882A R882B ——867——W — B

R882C R882J

123 4 ———TT——

127 8 — B R See Fig. 6

128 6 7 BR

128 6 7 ——

126 8 7 —— Line voltage inputs go to L1 and L2.

——87———W — B —

——867——W — B

——687——1 — 2

Replacement Parts:

32002190-001 Replacement Relay. Relay Fuse: 1A automotive fuse.

Low

Voltage

Relay Thermostat

thermostat connections

W(T).

Comments

Jumper L1 to COM and between X1 and R(T) in RA889A.

R(T). Line voltage switch ed inputs go to L1

and L2. See Fig. 7B.

See Fig. 7B.

INSTALLATION

When Installing this Product . . .

Read these instructio ns c aref ull y. Failure to follow them could damage the product or cause a hazardous condition.

Check the ratings given in the instructions and on the product to make sure the product is suitable for your application.

Installer must be a trained, experienced service technician.

After installation is complete, check out product operation as provided in these instructi ons .

Follow local codes for installation and application.

WARNING

Electrical Shock Hazard. Power supply can cause severe injury or death.

Transformer core not bonded. Disconnect power supply before wiring.

MOUNTING

In replacement applic atio ns , m oun t the ne w rela y i n th e s am e location as the old relay. For new installations, locate the rela y vertically on a solid wall or part ition as clos e as possible to the device to be controlled. Select a location that is easily accessible for installation and service.

NOTE: To reduce the possible transformer hum and relay

noise that is sometimes amplified by mounting surfaces such as sheet metal, plasterboard, and similar materials, place rubber or felt washers between the case and the mounting surface.

Position the relay and mark the mounting holes. See Fig. 1.

Start a screw in the upper right corner for the keyhole type mounting hole. Screw it down within about 1/8 in. (3 mm) of the surface.

Hang the relay on the screw , pos ition the case, and start the bottom screw.

Tighten both screws.

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