Emerson 1F98EZ-1621, Blue Wireless Easy Install 1F98EZ-1621 Installation Instructions Manual

1F98EZ-1621

Emerson® Blue™ Wireless Easy Install™

Provides Wireless Control for up to 4 Heat/2 Cool Heat Pump Stages

or up to 2 Heat/2 Cool Stages on Conventional Systems

INSTALLATION INSTRUCTIONS

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

Comfort Interface

Optional Remote

[

Sensor(s) not included

Comfort Interface

Equipment Control

Module

[

Includes Comfort/User Interface, Equipment Control

1F98EZ-1621 will accept

up to 3 remote sensors

congured for indoor and 1

remote sensor congured

Model 1F98EZ-1641

for outdoor.

and one Wireless Remote Sensor

Return Air Sensor

(RAS)

Remote Sensor
(outdoor location)

Equipment Control

Module

www.emersonclimate.com

PART NO. 37-7235A

www.white-rodgers.com

1114

!

INDEX

Mount Return Air Sensor and Equipment Control
Equipment Control Module Wiring to HVAC Equipment
Install Batteries
Installer Quick Reference

Congure Comfort Interface for System

Check System Operation
Locate and Mount Comfort Interface
View Wireless Devices
Troubleshooting

APPLICATIONS

Page

3
4
5
5
6
7
8
8

10

Conguration Options Applications

Single Stage Gas, Oil, Electric, Heat Only, Cool Only or Heat Cool Systems

Multi-Stage Gas, Oil, Electric, Heat Only, Cool Only or Heat Cool Systems

Heat Pump Single or Two Compressor Systems with up to 2 Stages of Aux / Em Heat

Heat Pump with Dual Fuel Single or Two Compressor Systems with up to 2 Stages of Fossil fuel Heat

Maximum

SPECIFICATIONS

Electrical Rating:

Input-Hardwire ....................................................... 20 to 30 VAC

Terminal Load ................................................................ 1.0A per terminal, 2.5A maximum all terminals combined

Setpoint Range .............................................................. 45° to 99°F (7° to 37°C)

Operating Ambient ........................................................ 32°F to +105°F (0° to +41°C)

Operating Humidity ....................................................... 90% non-condensing max.

Shipping Temperature Range ......................................... -40° to +150°F (-40° to +65°C)

Dimensions Interface ..................................................... 4-1/2”H x 6”W x 1-1/4”D

Dimensions Control ....................................................... 5-1/2”H x 5-3/4”W x 1-1/2”D

Stages

1/1

2/2

4/2

4/2

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

Comfort Interface installation and all components of the
control system shall conform to Class II circuits per the NEC
code.

2

ATTENTION: MERCURY NOTICE

This product does not contain mercury. However, this product
may replace a product that contains mercury.

Mercury and products containing mercury must not be
discarded in household trash. Do not touch any spilled
mercury. Wearing non-absorbent gloves, clean up any spilled
mercury and place in a sealed container. For proper disposal of
a product containing mercury or a sealed container of spilled
mercury, place it in a suitable shipping container. Refer to
www.thermostat-recycle.org for location to send product
containing mercury.

MOUNT RETURN AIR SENSOR AND EQUIPMENT CONTROL

IMPORTANT

Return Air

Sensor (RAS)

The RAS monitors temperature of the return air and is needed at
all times for system operation.

Drill 1/4” hole in return air duct at least 18” upstream from

humidier, dehumidier or any other HVAC accessories.

Insert RAS into duct and fasten with two sheet metal screws.

If the system is hydronic, locate return air sensor in conditioned
space.

Return Air Duct

Return

Air Sensor

(Required)

Equipment Control

Module

Supply

Duct

Do not provide battery power to Comfort Interface or remote
sensor (if installed) until instructed. All wireless components
in the kit are congured to communicate at the factory.

Mount Equipment Control Module on wall near HVAC equipment,
or on the air handler. Do not install Equipment Control Module
inside of the HVAC equipment. Use screws to securely fasten
control in place. Do not drill into critical furnace components. Wall
anchors and screws are provided for dry wall mounting (3/16”).
See next page for wiring.

Wiring Steps

1. Remove the cover from the Equipment Control Module.

2. Plug Return Air Sensor (RAS) lead into return air sensor

connection on the Equipment Control Module (required).
Route the sensor lead into the wiring channel and out the top
of the control.

3. Use thermostat wire to make the connections from Equipment
Control Module to the HVAC equipment or terminal strip. Strip
the sheath of the wire bundle back approximately 10”.

4. Insert wire bundle into the bottom of Equipment Control
Module. Two slots are provided if more than one bundle of wire
are required.

5. Route two wires from the bundle to the left side of the
Equipment Control Module for terminals R and C.

6. Route the rest of the wires in the bundle to the right side of the
Equipment Control Module and fasten loosely with wire ties.

7. Trim wires to length for each connection required, strip ends
and insert into control quick connect block.

Refer to wiring diagram for terminal functions and wire routing.

Note: Ten (10) feet of wire is supplied with the RAS.

R and C

from HVAC

Terminal Strip

or System

Transformer

Wire Tie

To Return Air Sensor (RAS) Required

POWER

R

R

RC

RC
RH

C

C

Connect

Equipment Control Module

Wire Tie

LED On/Off

SYS

SYS

W/E

W2

Y2

O/B

HM

HM2

DRY

DHM

DHM2

Y

G

L

DRY

W/E

to terminal

W2

connections on

Y

HVAC equipment

Y2

G

O/B

L
R
C

HM

DHM2 DHM HM2 HM LSYSTEM

HM2

DHM

DHM2

3

EQUIPMENT CONTROL WIRING TO HVAC EQUIPMENT

Return Air Duct

- Connect dehumidifier to DHM and DHM2

**To use the HVAC transformer to power humidification/dehumidification switch HM/DHM

switches to “SYS” position:

- Connect humidifier to HM

- Connect dehumidifier to DHM

If humidifier or dehumidifier has a separate transformer switch HM or DHM switch to “DRY” position:

- Connect humidifier to HM and HM2 (or)

**HM Switch

Button Switch

Connect Push

Status LED

Connect

Terminal Strip

Transformer

from HVAC

or System

RC

RH

C

R and C

RC

POWER

R

Sensor Socket

7-Segment LED

Status/Fault

LED On/Off

Return Air Sensor (RAS) Required

**DHM Switch

disconnecting one transformer, the two commons must be jumpered

together.

* For two transformer system, cut and tape off one transformer. If

transformer safety circuits are only in one of the systems, remove

the transformer of the system with NO safety circuits. If required,

replace remaining transformer with a 75 VA Class II transformer. After

NEUTRAL

*HVAC Transformer

24 VAC

120 VAC

SYS

DHM2

DHM

DRY

DHM2 DHM HM2 HM LSYSTEM

DHM2

DHM

Humidification Relay / Connection (for dry contacts)

Humidification Relay / Connection

HOT

SYS

HM2

HM

DRY

HM2

HM

Dehumidification Relay / Connection (for dry contacts)

Dehumidification Relay / Connection

O/B

Y2

G

L

R

C

L

24 VAC Transformer Hot

Comfort Alert Connection

24 VAC Transformer Neutral

Y

O/B

Y2

G

Y

O/B

Y2

G

Y

Changeover Relay Heat Pump

Fan Relay

Stage 1 - Outdoor Condenser (Conventional or HP)

Stage 2 - Outdoor Condenser (Conventional or HP)

W2

W2

W2

Button Switch

LED Push

W/E

W/E

W/E

Heat Stage 2 - Indoor Unit or Furnace (Conventional Gas, Oil, Elec) or HP 2 Stage Aux/Em

Heat Stage 1 - Indoor Unit or Furnace (Conventional Gas, Oil, Elec) or HP 1 Stage Aux/Em

O/B

Y2

C

Y

Indoor Air Handler/Furnace Connections

(if Heat Pump)

Outdoor Condenser

(A/C or Heat Pump)

4