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T6--PRH,T6--NRH
PREFERREDtSERIES
THERMIDISTAT
InstallationInstructions
A07045 A07044
Programmable Control Non---Programmable Control
NOTE: Read the entire instruction manual before starting the installation.
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TABLEOFCONTENTS PAGE SAFETY CONSIDERATIONS .................................... 2 INTRODUCTION .............................................. 3 INSTALLATION CONSIDERATIONS.............................. 4 INSTALLATION ............................................... 8 SYSTEM START--UP AND CHECKOUT .......................... 40 OPERATIONAL INFORMATION ................................ 51 TROUBLESHOOTING ......................................... 54 WIRING DIAGRAMS.....................................
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INTRODUCTION Bryant’s 7--day, 5/2--day, 1--day programmable and non--programmable Preferred Series Thermidistat Control is a wall--mounted, low--voltage control which combines temperature and humidity control in either a single unit or a two--piece unit. In two--piece configuration, the relays are located near the equipment and a two--wire connection is used between the Display Module and the Equipment Control Module. Single--piece installation requires more wiring and results in a higher profil
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INSTALLATIONCONSIDERATIONS Power Thiscontrolispoweredby24VAConly.Itrequires24VAC(Rh and/orRcandC terminals) of the low--voltage transformer to be connected to it for proper operation. It will not operate without these 2 connections. Rh and Rc are connected via PCB breakout jumper. See Fig. 1. For applications using two 24VAC transformers,onein theindoorunitand onein theoutdoorunit,connect the common from each to the C terminal. ConnectR from the indoorunit to the Rh terminal. Connect R from the
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A07052 Fig.1 -- PCBBreakoutJumper Models There are programmable and non--programmable models for all applications. They can be configured forAC orHP, 1--or2--speed compressor,and forHybrid Heatt installations, allowing it to be used in place of all Bryant thermostats. Programmable Thermidistat Controls may be configured as non--programmable ifuserdesires. HumidifyEquipmentandConnections Thehumidify outputconnectsdirectly to 24VAC operated humidifiers.Noother connection or interlock is required.
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! WARNING ELECTRICALOPERATIONHAZARD Failuretofollowthiswarningcouldresultinpersonalinjuryordeath. DO NOT connect furnace HUM terminal directly to Thermidistat Control HUM terminal. This will bypass furnace safety controls. See Low Voltage WiringDiagramsandnotesforproperconnection. DehumidifyEquipmentandConnections The dry contact output connects to the dehumidify input on variable--speed furnaces and fan coils. Additional dehumidification is done by controlling the compressor.A variety ofoperati
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RemoteIndoorTemperatureSensor A remote temperaturesensor may be used with theprogrammable model,where itisdesirabletoinstalltheThermidistatControlinalimitedaccesslocationwhile measuring the temperature in the living space. The remote room sensor may be used as a stand alone or average with local sensor. Two--PieceThermidistatConfiguration The Preferred Series Thermidistat Control can be installed in one of two configurations. The control may be installed as a single--piece Thermidistat or it may
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INSTALLATION Carton contains thefollowing components.See Fig.2 forT6--PRH orFig. 3 for T6--NRH. A07752 Fig.2 -- T6--PRHCartonContents 1. Display Module 2. Stand--offforEquipmentControlModule 3. Outside Air Temperature Sensor, screws and pigtail. 4. EquipmentControlModule 8
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A07753 Fig.3 -- T6--NRHCartonContents 1. Display Module 2. Stand--offforEquipmentControlModule 3. Outside Air Temperature Sensor, screws and pigtail. 4. EquipmentControlModule ThermidistatControlLocation ThermidistatControlshould bemounted: S Approximately5ft(1.5m)fromfloor. S Closetoorinafrequentlyusedroom,preferablyonaninsideparti- tioningwall. S Onasectionofwallwithoutpipesorductwork. ThermidistatControlshould NOT bemounted: S Closetoawindow,onanoutsidewall,ornexttoadoorleadingtothe outside.
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S Exposedtodirectlightorheatfromalamp,sun,fireplace,orother temperature--radiatingobjectswhichcouldcauseafalsereading. S Closetoorindirectairflowfromsupplyregistersandreturn--airregis- ters. S Inareaswithpooraircirculation,suchasbehindadoororinanal- cove. Installer should determine whether control will be installed as single--piece or two--piece. In single--piece configuration, as many as 14 wires may need to run to wall mounting location for connection to the control. In two--piece configuratio
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! CAUTION UNITDAMAGEHAZARD Failure to follow this caution may result in equipment damage orimproperoperation. Improper wiring or installation may damage Thermidistat Control. Check to make sure wiring is correct before proceeding with installation or turning on power. 1. Turn offallpowerto equipment. 2.If an existing Thermidistat Control is being replaced a. Remove existing control from wall. b. Disconnectwiresfrom existing control,1 atatime. c. As each wire is disconnected, record wire color an
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! CAUTION ENVIRONMENTALHAZARD Failure to follow this caution may result in environmental damage. Mercury is a hazardous waste. Federal regulations require that Mercury bedisposed ofproperly. Two--PieceInstallation The following steps should be followed for the installation of the two--piece configuration. NOTE: The 2--wire pigtail is not intended to support the weight of the User Interface. Do not hang the User Interface from the Equipment Control Module screw terminals. 1. Remove mounting plate
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A07225 Fig.4 -- PressTabstoRemoveBackplate A07226 Fig.5 -- TakeApart 13
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2. Route wires through large hole in mounting base. Level mounting base against wall (for aesthetic value only—Display Module need not be lev- eled for proper operation) and mark wall through 2 mounting holes. See Fig.6. A07165 Fig.6 -- BackplateMounting 3. Drill two 3/16--in. mounting holes in wall where marked. Thermidistat may be mounted to a standard junction box, if desired. Hole pattern on Thermidistat Control mounting base matches junction box mounting holes. 4. Secure rear plastic mounti
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6. Matchandconnectequipmentwirestoproperterminalsofeachconnector block, being careful not to over tighten the screws. Correct polarity must be observed when connecting the two wires from the EquipmentControl Module to the Thermidistat Control mounting base. If wires are con- nected incorrectly,theDisplay Modulewillnotoperate.See Fig.7, 8 and 9. Control Module Wiring Gu Control Module Wiring Guide ide Re Rellays ays OAT OAT Rc Rc OA OAT / T / RRS RRS Rh Rh RR RRS S ret retu urn rn { {SR SRTN T
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A07166 Fig.8 -- SecureWiresto TerminalStrip A07167 Fig.9 -- ConnectPigtailWirestoDisplayModule 16
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NOTE: The 2--wire pigtail is not intended to support the weight of the User Interface. Do not hang the User Interface from the Equipment Control Module screw terminals. S RedofthepigtailisV+ S BlackofthepigtailisVg 7. Push any excess wire into wall and against mounting base. Seal hole in wall to prevent air leaks. Leaks can affect operation and cause incorrect temperatureand/orhumidity measurement. 8. Make sure 2--wire pigtail is attached to Display Module mounting base. This should come attache
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10. Find suitable indoor mounting location for Equipment Control Module, eithernearoron equipment.SeeFig.11. IMPORTANT NOTE: Equipment ControlModule shouldnot bemounted to duct work or below any other controls or equipment (i.e. humidistat, humidifier,etc.). A07217 Fig.11 -- EquipmentControlModuleonEquipment 11. Route wires through rear of Equipment Control Module using either a clearanceholeorsupplied standoff.SeeFig.12. 18
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A07227 Fig.12 -- Standoff 12. Matchandconnectequipmentwirestoproperterminalsofeachconnector block being careful not to over tighten the screws. Correct polarity must be observed when connecting the two wires from the EquipmentControl Module to the Thermidistat Control mounting base. If wires are con- nected incorrectly,theDisplay Modulewillnotoperate.See Fig.7, 8 and 9. 13. Snap coverovertop ofEquipmentControlModule.SeeFig.13. 19
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A07218 Fig.13 -- CoveronEquipmentControlModule 14. Turn on power to equipment. On power up, all display segments will light for 5 sec. For the next 5 sec a 2--digit code appearson largedisplay which identifiesThermidistatControlconfiguration.Referto Option 33. a. AC — 1--stageairconditioner b. HP — 1--stage heat pump c. A2 — 2--stageairconditioner d. H2 — 2--stage heat pump e. hh — Hybrid Heatsystem with 1--stageheatpump f. h2 — Hybrid Heatsystem with 2--stageheatpump g. H — heating only system
