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Manual Honeywell THX9421

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  • Honeywell THX9421 - page 1

    THX932 1 /942 1 Pr estig e ® IA Q and R F EIM With wir eless accessories ® U.S . Registered T rademark. Copyright © 2011 Honeywell International Inc. All rights reser ved. S yste m Ins tallat ion Guide 69-2490-03 Control for up to 4 Heat/2 Cool heat pump systems or up to 3 Heat/2 Cool conventional systems for residential and commer cial applicat ...

  • Honeywell THX9421 - page 2

    Syst em Installa tion Guide 2 6 9 - 24 9 0 — 0 3 Y ou r Honey well advant age RedLINK™ Compatible Increaseyour contentand profitper jobby including RedLINK™accessories that meet yourcustomers comfort andconvenience needs. RedLINKaccessories includethe Wireless OutdoorS ...

  • Honeywell THX9421 - page 3

    T H X9 3 21/9 4 21 P r e s t i g e ® IAQ a nd RF EI M 3 6 9 - 24 9 0 — 0 3 MCR29241 MCR32386 Install thermostat 1 • THX9421:  Mountthe thermostat andwire toC and Rterminals of the Equipment InterfaceModule (EIM), orto a separate24 volt transformer (not provided). ...

  • Honeywell THX9421 - page 4

    Syst em Installa tion Guide 4 6 9 - 24 9 0 — 0 3 M32940 [If no wireless accessories are used, skip to Section 4.] Portable Comfort Control Install 2 fresh AAA alkaline batteries Install 3 fresh AA alkaline batteries Outdoor air sensor Indoor air sensor Install 2 fresh AA lithium batteries Pow er opt ional ac cessor ies 3 The HoneywellRedLIN ...

  • Honeywell THX9421 - page 5

    T H X9 3 21/9 4 21 P r e s t i g e ® IAQ a nd RF EI M 5 6 9 - 24 9 0 — 0 3 MCR32941 CONNECT CONNECTED S2 S2 S1 S1 Link th ermost at to the wir eless net work (if use d with an EIM or T r ueZONEW ireles s Adapter) 4 Next, linkall components andRedLINK ™  accessories tothe wirelessnetwork. In ...

  • Honeywell THX9421 - page 6

    Syst em Installa tion Guide 6 6 9 - 24 9 0 — 0 3 MCR32943 MCR32942 CONNECT WIRELESS SETUP MCR32935 MCR32934 While theAdd Device screenis displayed on thethermostat, press and r elease the CONNECT  buttonon each wirelessdevice, as described below . Accessoriesneed to beat leas ...

  • Honeywell THX9421 - page 7

    T H X9 3 21/9 4 21 P r e s t i g e ® IAQ a nd RF EI M 7 6 9 - 24 9 0 — 0 3 Ins tall opt ional sen sors 1 Mount thesensor on avertical exterior wall,at least 6inches below any overhang.Choose a location protectedfromdirect sunlight. 2 Place sensorsecurelyin bracket,? ...

  • Honeywell THX9421 - page 8

    Syst em Installa tion Guide 8 6 9 - 24 9 0 — 0 3 Setu p Inst aller opti ons ( ISU ) 7 Press CREA TE SETUP to set all system settings oneby one. Press VIEW/EDIT to select a specific function andmake quick changes. TIP : Y ou can use the ther mostat USB port to download all system configuration and installer options, incl ...

  • Honeywell THX9421 - page 9

    T H X9 3 21/9 4 21 P r e s t i g e ® IAQ a nd RF EI M 9 6 9 - 24 9 0 — 0 3 5080 Return Air Sensor T ype B 5090 T er minals Wired to Discharge Air Sensor B 5100 Discharge Air Sensor T ype B 5110 A-Coil Low T emperature Cutoff B 6000 Select the Dry Contacts in the System B 6010 T er minals Wired to Remote Setback Dry Contact C 6020 Remote Setback ...

  • Honeywell THX9421 - page 10

    Syst em Installa tion Guide 10 6 9 - 24 9 0 — 0 3 T ypicalwiring of aconventional system with upto 3-stage heatand 2-stage cool with onetransformer . EI M wiring gu ide — conventio nal system s See following pages f or additional ther mostat wiring guidlines for heat pumps, geothermal systems and ...

  • Honeywell THX9421 - page 11

    T H X9 3 21/9 4 21 P r e s t i g e ® IAQ a nd RF EI M 11 6 9 - 24 9 0 — 0 3 EI M wiring gu ide — heat pum p systems T ypicalwiring of aheat pump system withup to four -stage heatand two-stage cool withone transformer . 1 2 3 See guides on following pages f or ther mostat wiring and geother mal ...

  • Honeywell THX9421 - page 12

    Syst em Installa tion Guide 12 6 9 - 24 9 0 — 0 3 EI M wiring gu ide — geot hermal r adiant he at T ypicalwiring for geothermalradiant heat, geothermal for ced-air , and backup heat withone transformer . 1 2 3 U1, U2 or U3 terminals must be used for geothermal radiant heat (ISU 2010). Thermostat allows 2 s ...

  • Honeywell THX9421 - page 13

    T H X9 3 21/9 4 21 P r e s t i g e ® IAQ a nd RF EI M 13 6 9 - 24 9 0 — 0 3 Thermo stat wirin g guide s — Prest ige THX932 1 T ypicalwiring of a2-heat / 2-cool con- ventional systemwith one transformer T ypicalwiring of a3-heat / 2-cool heat pump systemwith one transformer T ...

  • Honeywell THX9421 - page 14

    Syst em Installa tion Guide 14 6 9 - 24 9 0 — 0 3 Prest ige TH X932 1 or EI M : Usin g univers al relays to co ntrol he ating o r 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 no ...

  • Honeywell THX9421 - page 15

    T H X9 3 21/9 4 21 P r e s t i g e ® IAQ a nd RF EI M 15 6 9 - 24 9 0 — 0 3 Wiring g uide — IAQ equip ment ( EIM or t hermos tat ) "U" terminalscan be usedfor humidification, dehumidificationor ventilation. With po wer supply Without pow er supply T yp ica l hoo ku p of non - pow er ed hu mid ifi er. T ypic ...

  • Honeywell THX9421 - page 16

    Syst em Installa tion Guide 16 6 9 - 24 9 0 — 0 3 Economizer Module wiri ng guides T ypicalwiring of aW7220 Economizer Module fora heat pumpsystem, using a PrestigeTHX9321 thermostator Equipment Interface Module. T ypicalwiring of aW7220 Economizer Module fora ...

  • Honeywell THX9421 - page 17

    T H X9 3 21/9 4 21 P r e s t i g e ® IAQ a nd RF EI M 17 6 9 - 24 9 0 — 0 3 Economizer Module wiri ng guides T ypicalwiring of aW7213/W7214 Economizer Module fora heat pumpsystem, using aPrestigeTHX9321 thermostat or EquipmentInterface Module. T ypicalwiring of aW7212 Eco ...

  • Honeywell THX9421 - page 18

    Syst em Installa tion Guide 18 6 9 - 24 9 0 — 0 3 The Economizercan greatlyreduceenergy costs if configur ed properly .In some climates thecooling system mayrun hundredsof hours, whenit may not be requir ed tomaintain indoor comfort.In some conditio ...

  • Honeywell THX9421 - page 19

    T H X9 3 21/9 4 21 P r e s t i g e ® IAQ a nd RF EI M 19 6 9 - 24 9 0 — 0 3 Heat pu mp with o utdoor tempe ratur e lockouts Heat pu mp and ba ckup heat op erati on Outdoor temperatur e lockoutsare optional.See Installer Setup options (ISU3120). Heat pump only Heat pump with backup heat as needed * Backup heat only H ...

  • Honeywell THX9421 - page 20

    Syst em Installa tion Guide 20 6 9 - 24 9 0 — 0 3 Backu p heat dif ferent ial an d upst age tim er Bas ic and Advan ced T em peratu re Contr ol Opt ions ( ISU 3 0 1 0 ) A backupheat differ ential andbackup heat upstage timercan be seton any system thathas morethan one typeof heatin ...

  • Honeywell THX9421 - page 21

    T H X9 3 21/9 4 21 P r e s t i g e ® IAQ a nd RF EI M 21 6 9 - 24 9 0 — 0 3 Humidification The thermostatcan be setto controlhumidification in allmodes (Heat, Off,Cool [ISU 8060]).A discharge airsensor is requir ed tohumidify in thecool mode. If both humidi ...

  • Honeywell THX9421 - page 22

    Syst em Installa tion Guide 22 6 9 - 24 9 0 — 0 3 Commercial dehumidification Dehumidification EquipmentOptions: (ISU 9000) • A/C withLow Speed Fan • A/C withHigh Speed Fan • Hot GasBypass • Dehumidifier When setfor A/C with Low Speed Fan , A/C with High Speed Fan or Hot Gas B ...

  • Honeywell THX9421 - page 23

    T H X9 3 21/9 4 21 P r e s t i g e ® IAQ a nd RF EI M 23 6 9 - 24 9 0 — 0 3 Southern Dehumidification Aw ay Mode This featur e lowersthe temperatureup to 3° Fbelow the setpointas needed to preventexcessive humiditywhile the home isunoccupied. Southern Dehumidification Away? ...

  • Honeywell THX9421 - page 24

    Syst em Installa tion Guide 24 6 9 - 24 9 0 — 0 3 Indoor sensor oper ation Wireless indoor sensor T emperature control The thermostatcan be setto respondto its internal temperaturesensor , or to anoption- al r emote indoorsensor . Ifmultiple sensors areused, thethermostat? ...

  • Honeywell THX9421 - page 25

    T H X9 3 21/9 4 21 P r e s t i g e ® IAQ a nd RF EI M 25 6 9 - 24 9 0 — 0 3 Delta T Fault Sensitivity is adjustab le in the Installer Setup (ISU 13180) Delta T diagnostics is only for non-zoned f orced air systems. Aler ts and diagnostic s Maintain closecontact with yourcustomers by providingmorecomfort and effi- ...

  • Honeywell THX9421 - page 26

    Syst em Installa tion Guide 26 6 9 - 24 9 0 — 0 3 Replacing s ystem components T o replace an Equipment In terface Module ( E IM ) or thermostat Follow stepsbelow to disconnect the thermostat andRedLINK accessories. See pages 5-6to re-link devices. At the thermostat (skip this step if no EIM is used) 1 ...

  • Honeywell THX9421 - page 27

    T H X9 3 21/9 4 21 P r e s t i g e ® IAQ a nd RF EI M 27 6 9 - 24 9 0 — 0 3 Specifications & replacement part s Operating Ambient T emperature Thermostat: 32 to120° F (0to 48.9°C) Portable Comfort Control: 32to 120°F (0to 48.9°C) Wir eless Outdoor Sensor:  -40to 140°F (-40to ...

  • Honeywell THX9421 - page 28

    Regulator y inform ation FCC Compliance Statement ( Part 1 5. 1 9 ) (USA only) This device complies with P art 15 of the FCC Rules. Oper ation is subject to the following two conditions: 1 This device ma y not cause harmful interference, and 2 This device m ust accept any interference receiv ed, including interference that ma y cause undesired oper ...

Manufacturer Honeywell Category Thermostat

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