Manuals / Brands / Household Appliance / Thermostat / Honeywell / Household Appliance / Thermostat

Honeywell THX9321, THX9421 Prestige THX9321 or EIM: Using universal relays to control heating or cooling

1 28

Download 28 pages, 3.61 Mb

System Installation Guide

14

69-2490 —03

Prestige THX9321 or EIM: Using universal relays to control heating or cooling

Poweringuniversalrelaywithseparate

heatingtransformer(THX9321shown)

Poweringuniversalrelaywithsystem

transformer(THX9321shown)

1

2

3

U1/U2/U3 terminals are normally open dry contacts when set up for a stage of heating or cooling.

You must install a field jumper if the stage of heating or cooling is powered by system transformer. Do NOT install a field

jumper if the stage of heating has its own transformer.

U1/U2/U3 terminals are assigned to a stage of heating or cooling in the Installer Setup. Options are:

• Heat--Stage3(laststageofheating)--ISU2100,2140,or2170

• Cool:Stage3--ISU2080

• Cool:Stage4--ISU2090

• Geothermalradiantheat:Stage1--(seewiringguideonpages12-13)

• Geothermalradiantheat:Stage2--(seewiringguideonpages12-13)

HEAT STAGE 3 or

COOL STAGE 3 or

COOL STAGE 4

120

VAC

C

Rc

R

U1

U1

U2

U2

24

VAC

Transformer

Thermostat

C

R

1

1

2

3

MCR32952

HEAT STAGE 3

120

VAC

C

Rc

R

U1

U1

U2

U2

24

VAC

Transformer

120

VAC

24

VAC

Transformer

Thermostat

C

R

C

R

1

1

2

3

MCR32953

69-2490_B.indd 14 7/13/2011 1:41:57 PM

Contents

Main THX9321/9421 Prestige IAQ and RF EIM With wireless accessories System Installation Guide Installation guide for: Quick start guide Your Honeywell advantage Install thermostat Install Equipment Interface Module (if used ) Power optional accessories 3 RedLINK Internet Gateway Link thermostat to the wireless network (ifusedwithanEIMor TrueZONEWirelessAdapter) 4 Next,linkallcomponentsandRedLINKaccessoriestothewirelessnetwork. Initial powerup configuration Setup options for THX9421 Link optional accessories to wireless network Portable Comfort Control Wireless outdoor sensor Wireless indoor sensor RedLINK Internet Gateway Install optional sensors 6 To install outdoor air sensor To install indoor air sensor To install discharge/return air sensor Setup Installer options (ISU ) THX9321/9421 P restige IAQ and RF EIM 9 Installer options (ISU) EIM wiring guide conventional systems EIM EIM wiring guide heat pump systems L/A EIM EIM wiring guide geothermal radiant heat L/A EIM Thermostat wiring guides Prestige THX9321 Typicalwiringofa2-heat/2-coolcon- ventionalsystemwithonetransformer 69-2490_B.indd 13 7/13/2011 1:41:56 PM 6 Typicalwiringofa3-heat/2-coolheat pumpsystemwithonetransformer Prestige THX9321 or EIM: Using universal relays to control heating or cooling Poweringuniversalrelaywithseparate heatingtransformer(THX9321shown) 69-2490_B.indd 14 7/13/2011 1:41:57 PM Poweringuniversalrelaywithsystem transformer(THX9321shown) 15 Wiring guide IAQ equipment (EIM or thermostat ) 69-2490_B.indd 15 7/13/2011 1:41:59 PM = NORMALLY CLOSED, DRY CONTACTS = NORMALLY OPEN, DRY CONTACTS "U"terminalscanbeusedforhumidification,dehumidificationorventilation. Economizer Module wiring guides Economizer Module wiring guides Economizer and TOD operation (ISU 2220 ) Commercial use only Heat pump with outdoor temperature lockouts Heat pump and backup heat operation Outdoortemperaturelockoutsareoptional.SeeInstallerSetup options(ISU3120). Backup heat differential and upstage timer Basic and Advanced Temperature Control Options (ISU 3010) Humidification Residential dehumidification Commercial dehumidification Southern Dehumidification Away Mode Ventilation Indoor sensor operation Wireless indoor sensor Alerts and diagnostics Replacing system components To replace an Equipment Interface Module (EIM) or thermostat To remove accessories from an EIM or thermostat Specifications & replacement parts Regulatory information Need Help?