Honeywell RA889A User Manual

PRODUCT DATA
68- 0216- 2
® U.S. Registered Trademark
Copyright © 2000 Honeywell Inc. • All Rights Reserved
RA889A
Switching Relay
APPLICATION
The RA889A Switching Relay provides intermediate switching
of line- and low-voltage devices from a line- or low-voltage
controller and is typically applied in hydronic heating systems.
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.)
Contents
Application ........................................................................ 1
Features ........................................................................... 1
Specifications ................................................................... 2
Ordering Information ........................................................ 2
Installation ........................................................................ 3
Mounting ........................................................................... 3
Wiring ............................................................................... 4
Operation .......................................................................... 4
Checkout .......................................................................... 4
Troubleshooting ............................................................... 4

Honeywell RA889A Specifications

General

Voltage Rating	120 VAC
Frequency	60 Hz
Current Rating	10 A
Contact Configuration	SPDT
Contact Ratings	10 A at 120 VAC
Operating Temperature	-40 to 150°F (-40 to 66°C)

Summary

Features

Application

Specifications

Ordering Information

Installation

Mounting

Wiring

Operation

Checkout

Troubleshooting

Test Button

This connection is the same as a call for heat connection between the R(T) and W(T) terminals.

Relay LED

This LED lights whenever there is 120 Vac (L1) on the N.O. terminal (when COM/N.O. relay contacts are closed).