Honeywell RA889A, User Manual

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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