Honeywell REDLINK ERM5220R User Manual

PRODUCT DATA
33-00205-01
ERM5220R
Equipment Remote Module
WITH REDLINK™ WIRELESS TECHNOLOGY
CAUTION
Read these installation instructions completely
and follow them carefully.
Installation must be performed by a qualified
service technician and must comply with local
codes.
Disconnect power to all relevant devices before
installing or servicing the ERM.
Failure to connect the device according to these
instructions may result in damage to the device,
the controls, and/or personal injury.
About the ERM5220R
Fig. 1.
FEATURES
• Wireless RedLink™ communication between
condensing unit/compressor or boiler and thermostat.
• Eliminates the need to run additional wires to your
outdoor condenser, multistage compressor, heat pump
or dual fuel applications, or if original wiring has been
damaged, or equipment has been relocated.
• Suitable for outdoor use.
• Temperature sensor terminals for outdoor temp
sensors or indoor freeze protection.
• LEDs for easy installation checkout.
• May reduce damage to homes since wiring/drilling is
eliminated.
MCR35654
ERM
WIRE
CONDENSING
UNIT
THERMOSTAT
ERM
BOILER
Contents
Specifications ............................................................................... 2
Compatible Products ................................................................. 3
Model Numbers ........................................................................... 3
Buttons, LEDs and Terminals ................................................. 4
Terminal Designations .............................................................. 5
Installation Checklist ................................................................. 6
Mounting ERM ............................................................................. 6
Installation and Wiring ......................................................... 7-13
Linking ERM to a new thermostat. ....................................... 14
Linking ERM to an existing thermostat. ............................ 16
Checkout ......................................................................................... 18
Operation ........................................................................................ 19
Troubleshooting ........................................................................... 20
Frequently Asked Questions ................................................... 27
Outdoor Sensor ............................................................................ 28
5 Year Warranty ............................................................................ 30

Honeywell REDLINK ERM5220R Specifications

General

Model	ERM5220R
Communication Protocol	REDLINK
Power Supply	24 VAC
Humidity Range	5% to 90% RH, non-condensing
Compatibility	Compatible with REDLINK enabled devices
Operating Temperature	0°C to 50°C
Weight	0.5 lbs

Summary

PRODUCT DATA

FEATURES

Key features and benefits of the ERM5220R Equipment Remote Module.

COMPATIBLE PRODUCTS

BUTTONS, LEDS AND TERMINALS

Installation Checklist

Mounting ERM

Instructions and visual guides for physically mounting the ERM unit.

INSTALLATION

Wiring

Steps for preparing and connecting wires to the ERM unit.

WIRING DIAGRAMS

LINKING ERM5220R TO A NEW COMPATIBLE THERMOSTAT

EQUIPMENT INTERFACE MODULE (EIM) THM5421R. WHEN IS IT USED?

Necessity and conditions for using an EIM with ERM and thermostats.

LINKING ERM5220R TO AN EXISTING COMPATIBLE THERMOSTAT

OPERATION

ERM USED FOR OUTDOOR UNIT: CALL FOR COOLING

ERM operation during cooling calls for outdoor units.

ERM USED FOR OUTDOOR UNIT: CALL FOR HEATING (HEATPUMP ONLY)

ERM USED FOR BOILER: CALL FOR HEATING

HEATPUMP GOES INTO DEFROST

COMPRESSOR FAULT MONITOR ENERGIZES L ON ERM

TROUBLESHOOTING

UNABLE TO LINK ERM TO THERMOSTAT

BOILER DOES NOT RUN WITH A CALL FOR HEAT FROM THERMOSTAT

OUTDOOR UNIT STAGE 1 DOES NOT RUN WITH A CALL FOR COOLING

OUTDOOR UNIT STAGE 1 DOES NOT RUN WITH A CALL FOR HEAT (HEAT PUMP APPLICATIONS)

HEAT RUNS WITH A CALL FOR COOLING (HEATPUMP)

COOLING RUNS WITH A CALL FOR HEAT (HEAPUMP).