Honeywell Prestige IAQ YTHX9421 User manual

Prestige®IAQ
with Equipment Interface Module
Installation Guide
TM
TM
TM
OR
2 Wires for Power
2 Wires for Power
RedLINK to Equipment Interface Module
RedLINK to TrueZONE Wireless Adapter

2
Current display. Button pressed in
signifies current display
Mode control buttons. Use to change
settings for Fan or System Heat/Cool.
Menu. Select options to: set schedules,
view equipment status, change IAQ
settings, access installer options*, etc.
Current schedule. Shows desired
temperature and schedule status.
Indoor conditions. Shows indoor
temperature and humidity.
Current date and time.
Current status. Shows system mode
(heat/cool), outdoor temperature and
humidity (with optional outdoor sensor).
USB port. Use USB device to load
settings and dealer information.
Reference to key features
* Password is date code.
Getting started
Follow these basic steps to install this
thermostat, link it with the equipment interface
module (EIM) and wireless accessories and
set installer options.
1 Installing the Equipment Interface
Module (EIM)
2 Installing the thermostat
3 Powering optional RedLINK accessories
4 Performing initial setup
5 Finding your password (Date Code)
• To add or remove RedLINK accessories
• To make changes to Installer Setup
• To perform an Installer Test
• To view Data Logs
1324
1324
Thermostat (back view)
Password
(Date Code)

3
NOTE: If an EIM is mounted inside a metal cabinet, it is recommended to use
a THM4000R1000 Wireless Adapter for extended wireless range. Mount the
Wireless Adapter outside the metal cabinet and connect to the ABCD terminals at
the EIM.
NOTE: When installing multiple
thermostats and EIMs, mount the
EIMs at least 2 feet apart for best
RedLINK performance.
1.1 Mount EIM.
Mount the EIM near the HVAC
equipment or on the equipment
itself.
Use screws and anchors as
appropriate for the mounting
surface.
1.2 Wire EIM as shown.
Refer to the table and wiring diagrams on pages 3-5.
NOTE: If you are installing discharge and return air sensors, refer to the mounting
instructions in the Alerts and Delta T Diagnostics Installation Instructions packed
in the kit.
1
Installing the equipment interface module (EIM)
Terminal Designations
Conventional System Heat Pump
Terminal Description Terminal Description
CCommon wire from 24 VAC
transformer. CCommon wire from 24 VAC transformer.
R* Power wire from 24 VAC
transformer. RPower wire from 24 VAC transformer.
RH* Heating power. RH Heating power.
RC* Cooling power. RC Cooling power.
W Heat Stage 1 O/B Changeover valve for heat pumps.
W2 Heat Stage 2 AUX 1 Backup Heat Stage 1/Emergency
Heat Stage 1
W3 Heat Stage 3 AUX 2 Backup Heat Stage 2/Emergency
Heat Stage 2
Y Compressor Stage 1 Y Compressor Stage 1
Y2 Compressor Stage 2 Y2 Compressor Stage 2
G Fan Relay G Fan Relay
AConnect to Economizer Module or
Lighting Panel (TOD). L/A
Connect to Compressor Monitor,
Zone Panel, Economizer Module or
Lighting Panel (TOD).
* Remove jumpers when separate transformers are used.
R
C
Y
Y2
G
W
O/B
W2
AUX1
W3
AUX2
A
L/A

4
Terminal Designations
Conventional System Heat Pump
Terminal Description Terminal Description
U1 / U1**
U2 / U2**
U3 / U3**
Universal relay for humidification,
dehumidification, ventilation, or
a stage of heating/cooling. U
terminals are dry contacts that
require power.
U1 / U1**
U2 / U2**
U3 / U3**
Universal relay for humidification,
dehumidification, ventilation, or
a stage of heating/cooling. U
terminals are dry contacts that
require power.
S1 / S1***
S2 / S2***
S3 / S3***
S4 / S4***
Universal input for a wired indoor
sensor, outdoor sensor, discharge
sensor, return sensor, dry contact
device for alerts or dry contact
device for remote setback.
S1 / S1***
S2 / S2***
S3 / S3***
S4 / S4***
Universal input for a wired indoor
sensor, outdoor sensor, discharge
sensor, return sensor, dry contact
device for alerts or dry contact
device for remote setback.
A
B
C
D
Connect to THM4000R1000
Wireless Adapter for extended
wireless range.
A
B
C
D
Connect to THM4000R1000
Wireless Adapter for extended
wireless range.
** See wiring diagrams on pages 4-5.
*** See wiring diagram below for wiring Dry Contact Devices to display alerts.
U1, U2, and U3 are normally
open dry contacts when set up
for a stage of heating or cooling.
Youmustinstallaeldjumperif
the stage of heating or cooling is
powered by the system trans-
former.DoNOTinstallaeld
jumper if the stage of heating has
its own transformer.
1
2
1
2
U3
U3
U2
U2
U1
U1
120
VAC
24
VAC
24
VAC
HEAT STAGE 3,
COOL STAGE 3,
COOL STAGE 4 OR
GEOTHERMAL
RADIANT HEAT
RH
RC
R
C
TRANSFORMER
Wiring dry contact devices to display alerts
DISCONNECT POWER BEFORE INSTALLATION.
Do not apply power to S1, S2, S3 or S4 terminals.
NOTE: The dry contact device must
be rated for low voltage.
Connect a dry contact device such as a
water sensor to S1, S2, S3 or S4 terminals.
The thermostat displays an alert when a
problem is detected.
MULTIPLE DRY CONTACT DEVICES
ON ONE SET OF TERMINALS
EIM
ONE DRY CONTACT DEVICE
Connecting a stage of heating or cooling to a universal relay
(U1, U2, U3)

5
POWERED
HUMIDIFIER
RH
RC
R
C
U3
U3
U2
U2
U1
U1
24
VAC
120
VAC
24
VAC
120
VAC
24
VA
C
1
FIELD INSTALLED
JUMPER BETWEEN
R AND U1
RH
RC
R
C
24 VAC
U3
U3
U2
U2
U1
U1
NON-POWERED
HUMIDFIER
24
VAC
120
VAC
1
POWERED
VENTILATOR
RH
RC
R
C
24
VA
C
U3
U3
U2
U2
U1
U1
24
VAC
120
VAC
24
VAC
120
VAC
1
POWERED
DEHUMIDIFIER
RH
RC
R
C
U3
U3
U2
U2
U1
U1
24
VAC
120
VAC
24
VAC
120
VAC
24
VA
C
1
FIELD INSTALLED
JUMPER BETWEEN
R AND U1
RH
RC
R
C
24
VAC
U3
U3
U2
U2
U1
U1
NON-POWERED
VENTILATOR
24
VAC
120
VAC
1
FIELD INSTALLED
JUMPER BETWEEN
R AND U1
RH
RC
R
C
24 VAC
U3
U3
U2
U2
U1
U1
OR
DEHUMIDIFICATION
WITH LOW SPEED FAN
24
VAC
120
VAC
1
2
Typicalhookupofpoweredhumidier Typical hookup of non-powered
humidier
Typical hookup of powered ventilation
Typicalhookupofpowereddehumidier
(whole house dehumidifer)
Typical hookup of variable speed blower
fordehumidicationinlowspeed
Typical hookup of non-powered
ventilation
Any combination of universal relays (U1, U2, U3) can be used. They are set in the
thermostat installer setup.
WiretheuniversalEIMrelaytothelowspeedfanfordehumidicationcontrolat
the equipment. The EIM relay can be set to be normally open or normally closed
in the thermostat installer setup.
1
2
Normally open, dry contacts
Normally closed, dry contacts
Wiring humidification, dehumidification and ventilation

6
2.1 Separate wallplate
from thermostat.
2.2 Mount wallplate as shown.
Mount new wallplate using
screws and anchors included
with the thermostat.
Drill 3/16-in holes for drywall.
Drill 7/32-in holes for plaster.
2.3 Connect power to
thermostat.
2.3a Connect thermostat to
the R and C terminals at
the EIM or to a separate
24 volt transformer (not
provided).
2.3b Push excess wire back
into the wall opening.
2.4 Insert coin cell battery.
Place coin cell battery in
thermostat as shown with +
side up.
NOTE: Coin cell battery saves
time and date during a power
loss.
2Installing the thermostat
R
C
1324
Thermostat (back view)
Thermostat (back view)
Wallplate (back view)
Wallplate
Wallplate
Coin cell
battery
1324

7
3.1 Install batteries in RedLINK
accessories.
• Portable Comfort Control
• Wireless Outdoor Sensor*
• Wireless Indoor Sensor*
• Wireless Entry/Exit Remote*
• Wireless Vent and Filter Boost
Remote*
* Requires setup. See Installer
Setup options in Step 4.5.
3.2 Connect gateway to internet and
connect to power.
3.2a Connect RedLINK Internet
Gateway to router or modem
with Ethernet cable (RJ45).
3.2b Connect gateway’s power cord
to an electrical outlet that is not
controlled by a wall switch.
3Powering optional RedLINK accessories
Thermostat
Wallplate
2.5 Mount thermostat on
wallplate.
Align thermostat to wallplate
and snap into place.
R
C
3.2a
3.2b

8
4Performing initial setup
Initialsetupoptionsdenethetypeofsystemyouareinstalling:
• Residential or commercial
• Non-zoned or zoned
• Used with or without an Equipment Interface Module (THM5421)
• Used with or without the TrueZONE Wireless Adapter (THM4000)
4.2 Link the thermostat to the equipment
interface module.
4.2a Press and quickly release the
CONNECT button on the EIM.
Make sure the “Connected” light is
flashing green.
NOTE: If the “Connected” light does
NOT flash green, another system may
be in the listening mode. Please exit the
listening mode at the other system and
then try again.
• Green Flashing: In Listening
Mode - system is ready to add
RedLINK devices.
• Green Steady: RedLINK devices are
communicating.
• Red: RedLINK device(s) are NOT
communicating. Check EIM and
RedLINK devices.
4.2b While the “Connected” light is
flashing green on the EIM, press
Next on the thermostat. After a
short delay, the screen will display
Device Connected.
4.1 Follow prompts on the screen to
select appropriate options.
NOTE: If you are connecting the
thermostat to the TrueZONE Wireless
Adapter (THM4000), refer to the
TrueZONE instructions to link the
thermostat and RedLINK accessories.
Then go to step 4.5. Next
CONNECT
CONNECTED
Next
Next

9
4.3 When you see the prompt Do you
have RedLINK accessories to
connect? Touch Yes or No.
• If you select Yes, you will be
prompted to Press Connect on all
new accessories. Continue to Step
4.4.
• If you select No, continue to Step 4.5.
4.4 Connect each RedLINK accessory.
NOTE: Make sure accessories are at
least 2 feet away from the EIM during
the linking process.
4.4a While the Add Device screen
is displayed (listening mode),
press and quickly release the
CONNECT button on each new
RedLINK accessory.
4.4b After a short delay (up to 20
seconds), check the thermostat
to confirm the connection of each
RedLINK accessory.
4.4c Touch Done at the thermostat after
all new RedLINK accessories are
connected.
NOTE: The thermostat displays a
countdown timer while in listening
mode. If it detects no activity for 15
minutes, it exits listening mode.
Done
4.5 Finish the initial setup.
Finish the setup by selecting the
desired options. Touch Done after
you select the last option you want to
change.
The thermostat now displays its Home
screen and the thermostat setup is
complete.
Listening mode
Listening mode

10
5Finding your password (Date Code)
• To add or remove RedLINK accessories
• To make changes to Installer Setup
• To perform Installer Test
• To view Data Logs
Finding your password
You can find the Date Code on the
back of the thermostat, or
1 Touch Menu.
2 Select Dealer Information.
Dealer Informa�on
OK
1324
1324
Thermostat (back view)
Password
(Date Code)