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Bryant PREFERREDT A07044 User's Manual

1. terminal can be configured to be energized in either heating mode or in cooling mode depending on heat pump operation O is used to describe a heat pump system that energizes its reversing valve in cooling B is used to describe a heat pump system that energized its reversing valve in heating H Reversing valve output O W2 B is energized when HEAT mode is selected C Reversing valve output O W2 B is energized when COOL mode is selected Default is 29 Option 11 Deadband Setting Between Heat amp Cool This option is not available on Heat Only and Cool Only systems The selection allows the installer to choose how much differential exists between the heating and cooling setpoints Allowable selections are 1 6 Default is 2 Option 12 Smart Recovery Smart Recovery OF off means setpoints change precisely at setback recovery time Thirty 60 or 90 selects the number of minutes recovery starts before programmed recovery time Recovery takes place smoothly during the selected recovery time ending at the recovery time and temperature which is programmed Not available with non programmable Thermidistat Controls or when Thermidistat Control is configured as non programmable Default is 90 Option 13 Room Air Temperature Offset Adjust The number of F to be added to the displayed temperature to calibrate or deliberately miscalibrate the measured room temperature 5 to 5 F Default is 0
2. 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 appears on large display which identifies Thermidistat Control configuration Refer to Option 33 AC HP pP gt 1 stage air conditioner 1 stage heat pump 2 stage air conditioner 2 stage heat pump Hybrid Heat system with 1 stage heat pump Hybrid Heat system with 2 stage heat pump heating only system cooling only system 20 Single Piece Installation The following steps should be followed for the installation of the single piece configuration 1 Remove cover from Equipment Control Module by pressing the two tabs on the bottom edge and pulling away Route wires through large hole in Equipment Control Module Level Equipment Control Module against wall for aesthetic value only Equipment Control Module need not be leveled for proper operation and mark wall through 2 mounting holes 2 Drill two 3 16 in mounting holes in wall where marked Thermidistat Control may be mounted to a standard junction box if desired Hole pat tern on Equipment Control Module matches junction box mounting holes 3 Secure rear plastic Equipment Control Module to wall with 2 screws and anchors provided Additional mounting holes are available for more se cure mounting if needed Make sure all wires extend through hole in Equipment Control Module 4 Adjust length and routing of each wire to reach pr
3. Heat Stage 1 oe Compressor Low Compressor High Y Y2 24VAC Hot Heating T _R_ 24VAC Hot Cooling Dry Contact 1 rL p 4 Dry Contact 2 Aux Connection 24VAC Common C Hr Humidify Humidifier Solenoid Outdoor Air Temp 7 Valve Remote Room Sensor Outdoor Sensor n OATIRRS Com L T Remoa Room Sensor I A06578 Fig 23 Fan Coil Shown w Aux Connection 2 Heat Pump Air Conditioner removed for clarity Indicates connection may not be required available 64 Thermostat Fan Coil Heat Pump RVS Heat Stage 2 O B W2 f Heat Stage 1 Compressor Low Compressor High 2 24VAC Hot Heating Rh F 24VAC Hot Cooling Dry Contact 1 Dry Contact 2 24VAC Common Humidify Humidifier Solenoid Outdoor Air Temp Valve A Remote Room Sensor Outdoor Sensor OAT RRS Com OAT RRS Remote Room Sensor A06579 Fig 24 FV FK Fan Coil w 1 Stage Heat Pump ndicates connection may not be required available 65 Typical Thermostat Fan Coil RVS Heat Stage2 OBw2 f __w3__ Heat Stage 1 L ww _ w2_ Compressor Low Compressor High Y Y2 Fan Lic 24VAC Hot Heating Rh F RT 24VAC Hot Cooling Dry Contact 1 Dry Contact 2 L 24VAC Common c Humidify Humidifier Solenoid Outdo
4. Cooling Lockout Below 55 F Selection only available if outdoor air sensor is present Zoning Auxiliary Heat Lockout Temperature Setting only available when heat pump is used and when outdoor air temperature sensor is present Heat Pump Lockout Temperature Reversing Valve Adjustable Setpoint Deadband not available on Heat Only and Cool Only systems Smart Recovery programmable models only Room Air Temperature Offset Adjustment Humidity Offset Adjustment Enable Auto Mode Cycles Per Hour Time Between Stages Backlight Configuration 79 E Configuration Options cont Option 19 Dry Contact programmable models only Option 20 Outdoor Air Temperature Offset Adjustment Option 21 Keypad Lockout Option 22 High Cool Latch Temperature Option 23 High Heat Latch Temperature Option 24 Programmable Non Programmable programmable models only Option 25 Number of Programmable Periods Per Day programmable models only Option 26 Minimum Cooling Setpoint Option 27 Maximum Heating Setpoint Option 28 UV Light Reminder Option 29 Humidifier Pad Reminder Option 30 Programmable Fan programmable models only Option 31 Daylight Savings Time Configuration programmable models only Option 32 Furnace Heat Staging Option 33 Single or Two Piece Installation Options with an asterisk can also be set changed by the homeowner 2007 Bryant Heating amp Cooling Systems 7310 W Morris St Indianapolis IN 46231 Printed in
5. Option 14 Humidity Display Offset Adjust The percentage to be added to the displayed humidity to calibrate or deliberately miscalibrate the measured room humidity 9 to 9 RH Default is 0 Option 15 Enable Auto Mode This selection is not available if the Thermidistat Control is configured as Heat Only or Cool Only in Option 1 This allows the homeowner to select auto changeover mode in addition to heat and cool This allows the Thermidistat 30 Control to automatically change between heating mode and cooling mode when sufficient demand for heating or cooling exists On Auto mode is available OF Auto mode is not available Default is On Option 16 Maximum Cycles Per Hour This selection limits the number of cycles per hour that the Thermidistat Control allows the system to operate Selections are 2 4 6 2 The heating and cooling outputs will be energized no more than 2 times per hour When an output is energized it will not be energized again for 30 minutes 4 The heating and cooling outputs will be energized no more than 4 times per hour When an output is energized it will not be energized again for 15 minutes 6 The heating and cooling outputs will be energized no more than 6 times per hour When an output is energized it will not be energized again for 10 minutes Default is 4 Option 17 Time Between Equipment Stages This selection is only available for heat pump systems This determi
6. This provides power to energize the dehumidify terminal on the cooling equipment when the dry contact is closed See Wiring Diagrams for more information Default is OF off Option 20 Outdoor Air Temperature Offset Adjustment This selection allows the calibration or deliberate miscalibration of the outdoor air temperature sensor reading The selection ranges from 5 to 5 F Default is 0 Option 21 Keypad Lockout programmable models only This selection allows the installer to limit access to the keypad Selections are OF off 1 2 3 OF off The user has full access to the keypad 1 The user has access to modify setpoints time of day 2 The user has access to change the setpoints only 33 3 The entire keypad is locked When a button is pressed the backlight will turn on but none of the operating parameters will be changed When the keypad lock selection is turned on the padlock icon will be displayed To unlock the keypad press and hold the UP DOWN buttons simultaneously for five seconds When the keypad is unlocked the padlock icon will turn off The keypad will remain unlocked for two minutes after the last button press After two minutes with no button presses the keypad will lock again The keypad will not lock in the software configuration mode or in the installer test mode Default is OF off Option 21 Keypad Lockout non programmable models only This selection allows the instal
7. field supplied jumper between and Rh Depending on the installation up to 14 wires may be required Installation as two piece unit is recommended Only 2 wires are required for connection between Display Module and Equipment Control Module These two wires V and Vg do not provide ordinary 24VAC They carry a combination of power and communications data that is unique to these products S TWIST OFF A07052 Fig 1 PCB Breakout Jumper Models There are programmable and non programmable models for all applications They can be configured for AC or HP 1 or 2 speed compressor and for Hybrid Heat installations allowing it to be used in place of all Bryant thermostats Programmable Thermidistat Controls may be configured as non programmable if user desires Humidify Equipment and Connections The humidify output connects directly to 24VAC operated humidifiers No other connection or interlock is required Any of several installer selectable operating modes are available 7 WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death DO NOT connect furnace HUM terminal directly to Thermidistat Control HUM terminal This will bypass furnace safety controls See Low Voltage Wiring Diagrams and notes for proper connection Dehumidify Equipment and Connections The dry contact output connects to the dehumidify input on variable speed furnaces and fan coils Additional
8. minutes When staging between compressor and electric heat or between compressor and furnace heat the time is configurable The timer is configurable via Option 17 This timer is overridden if temperature error is greater than 5 F usually due to a large change in desired temperature and equipment stages up in 60 second intervals Defrost When defrost occurs in a Hybrid Heat system the furnace will operate during the defrost cycle At the end of the defrost cycle the furnace and heat pump will be de energized while the fan is energized for 2 minutes allowing the heat exchanger to cool down At the end of the 2 minute time the heat pump will be re energized if a call for heat still exists Detection of defrost will not work properly if the installer has configured the O W2 B output to function as a B output During heat pump heating a defrost 51 signal shall be considered valid if the compressor output is energized and the defrost signal has been active for less than 15 consecutive minutes Any defrost signal present for longer than 15 minutes shall be considered invalid Heat pump fan coil and hybrid heat systems shall use this input to Detect that defrost is in progress and energize the auxiliary heat to provide homeowner comfort during the defrost cycle e Allow a defrost cycle to run to completion regardless of the system demand Three Minute Minimum on Time In normal operation when a stage turns on it will not turn off for
9. more secure mounting if needed Make sure all wires extend through hole in mounting base Adjust length and routing of each wire to reach proper connector block and terminal on mounting base with 1 4 in extra wire 14 6 Match and connect equipment wires to proper terminals of each connector block being careful not to over tighten the screws Correct polarity must be observed when connecting the two wires from the Equipment Control Module to the Thermidistat Control mounting base If wires are con nected incorrectly the Display Module will not operate See Fig 7 8 and 9 Control Module Wiring Guide a Q I a OAT D retum SRTN D ae used pr di single stage contact D2 D cooling ct wur interface Vg D Y1 used for multi speed cooling Y1 stage 1 Y2 stage 2 A07687 Fig 7 Control Module Wiring Guide Red is V Black is Vg 15 A07166 Fig 8 Secure Wires to Terminal Strip A07167 Fig 9 Connect Pigtail Wires to Display Module 16 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 Red of the pigtail is V Black of the pigtail is Vg 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 incorre
10. return to normal operation If the DOWN key is released early the number will return to 10 and the reset will not occur SYSTEM START UP AND CHECKOUT The Thermidistat Control is designed with a built in installer test capability It allows easy operation of equipment without delays or setpoint adjustments to force heating or cooling To enable installer test mode press and hold the fan button for 15 seconds After 10 seconds the Thermidistat Control will enter Configuration Mode Continuing to hold the Fan button through 15 seconds will cause the Thermidistat Control to enter Installer Test Mode Pressing the Mode button will change the system operating mode to test the heating and cooling equipment Auto Mode is not available during Installer Test Mode If no buttons are pressed for 15 minutes the installer test mode will be terminated Pressing DONE at any time will exit installer test mode Heat The first stage of heating will be energized for three minutes then the first and second stages if a second stage exists will turn on for an additional three minutes During the first stage of heating the HEAT ON icons will be displayed During the second stage of heating if one exists the 2 next to the On will be displayed if the system has a two stage compressor A2 h2 or H2 unit types The auxiliary heat on icon will be displayed if the second stage is electric heat HP unit type For Hybrid Heat installation or heat p
11. the UV Light reminder will be displayed CHECK UV LIGHT Default is OF off Option 29 Humidifier Pad Reminder This selects the number of months after which the Humidifier Pad Reminder icon will be displayed This is not based on run time OF off The Humidifier Pad Reminder is disabled and will never be displayed 1 24 The number of months after which the Humidifier Pad Reminder icon will be displayed CHECK HUM PAD Default is OF off 37 Option 30 Programmable Fan programmable models only This selection allows the homeowner to program the fan selection to Auto or On fan operation for each of the program schedule periods This selection is only available on programmable Thermidistat Controls OF off Programmable fan is disabled and the homeowner must manually select Auto or On for fan operation On Programmable fan is enabled The homeowner can program Auto or On fan operation along with the heat and cool setpoints for each programmed period When the program schedule is running the programmed heat setpoint cool setpoint and fan selection for that period will be used If the homeowner overrides the programmed fan setting by pressing the fan button the override selection will remain in effect until the next programmed period time Default is OF off Option 31 Daylight Savings Time Configuration programmable models only This selectio
12. the soft keys to move the box around the digits to be set and the UP DOWN buttons to change the setting Concurrent presses of 42 the set button will cycle through the calendar daily schedule and vacation settings Calendar may be changed by using the soft keys to select the Month Day or Year The UP DOWN buttons are used to change the Month Day or Year setting when the box surrounds it Day of the week Mon Sun is determined by calendar settings and is not directly adjustable When changing daily schedule settings the soft keys are used to set the days period times heating setpoints and cooling setpoints The UP DOWN buttons are used to change the setting with the box around it ALL PROGRAM PERIODS WAKE DAY EVE SLEEP MUST OCCUR WITHIN THE SAME 24 HOUR PERIOD When changing Vacation settings the soft keys are used to choose the selection to be adjusted and the UP DOWN buttons are used to change the setting Humidify setting may only be changed when heat mode is selected and Dehumidify setting may only be changed when cool mode is selected Humidity Control Features The various humidity control features of the Thermidistat Control are explained below They are grouped into 2 sections humidification and dehumidification Instructions on how to select each feature are given at the end of each section Humidification The Thermidistat Control directly connects to a standard 24VAC humidifier to control humidification in t
13. 24VAC Common c__ Humidify HUM _ Humidifier Solenoid Valve A Outdoor Sensor Outdoor Air Temp OAT e Remote Room Sensor RRS gt OAT RRS Com OAT RRS Remote Room L Sensc A06583 Fig 28 Typical Fan Coil Cooling Only Indicates connection may not be required available 69 Thermostat Furnace Heat Pump RVS Heat Stage 2 O B W2 Heat Stage 1 W W1 Compressor Low Compressor High Fan 24VAC Hot Heating 24VAC Hot Cooling Dry Contact 1 Dry Contact 2 24VAC Common Humidify Humidifier Solenoid Outdoor Air Temp Valve Remote Room Sensor Outdoor Sensor OAT RRS Com Remote Room Sensor A06584 Fig 29 Variable Speed Multi Stage Furnace w 2 Stage Heat Pump Indicates connection may not be required available 70 Thermostat RVS Heat Stage 2 Heat Stage 1 Compressor Low Compressor High Fan 24VAC Hot Heating 24VAC Hot Cooling Dry Contact 1 Dry Contact 2 24VAC Common Humidify Outdoor Air Temp Remote Room Sensor OAT RRS Com Single Stage Furnace Humidifier Solenoid Valve Outdoor Sensor Remote Room Sensor Single Stage Heat Pump Fig 30 Single Stage Furnace w Heat Pump Indicates connection may not be required available 71 A006585 Thermostat Furnace Air Con
14. Control is configured as a heat pump and emergency heat is selected all Y signals are locked out and W becomes energized upon a call for heat Programmable Fan programmable models only The fan output can be programmed based on period of the day When programming for each day and period the fan can be set to On or AUTO Dry Contact On the programmable models the dry contact that can be used for control of an auxiliary device The dry contact may be configured to be closed for a specific number of minutes per hour for each period of the program schedule This can be used to operate a ventilator damper system blower or other auxiliary device There are two terminals D1 and D2 On both the programmable and non programmable models when configured as a dehumidify output it will operate cooling equipment capable of dehumidify function When configured for dehumidification the terminal must be connected to one of the dry contact terminals The other dry contact terminal is connected to the dehumidify terminal on the furnace or fan coil This provides 53 power to energize the dehumidify terminal on the cooling equipment when the dry contact is closed If it is desired to operate a ventilator or other device the D1 and D2 terminals can be connected directly to the equipment This will provide a closed contact for the specified number of minutes per hour See Option 19 If timed control of the system blower is required the dry c
15. Humidity 3 Dehumidify Off Dehumidification can be turned off completely This can be done without changing existing setpoints To Select Dehumidification programmable between NORMAL COOL TO and OFF Press the soft key below the dehumidify icon button to bring up dehumidify selections Dehumidify options are only available when in Cooling mode When 47 system is in AUTO mode dehumidify options are available if the last system operation was a call for cooling To Select Dehumidification non programmable between NORMAL COOL TO and OFF Press the features button three times The first press displays the outdoor air temperature the second press displays the humidify options and the third press will display the current dehumidify selections The mode button is used to cycle through the dehumdify selections Additional Dehumidify Comments Dehumidification can be enhanced with some efficiency loss by turning blower off immediately at the end of each cooling cycle eliminating normal 90 sec blower off delay Where maximum humidity removal is desired this should be done Fan coils have the capability of removing this off delay On FK or FV Fan Coils set delay tap to 0 0 On standard fan coils a jumper can be cut to disable off delay Refer to fan coil Installation Instructions for details If FAN is set for continuous operation fan On icon displayed G output is turned off for 5 minutes at the end of each cooling cycle as lo
16. S Com Remote Room A06588 Fig 33 Variable Speed Multi Stage Furnace w Single Stage Heat Pump ndicates connection may not be required available 74 Single Stage Thermostat Furnace RVS Heat Stage 2 Heat Stage 1 dria Hw Compressor Low Compressor High 2 24VAC Hot Heating Rn T 8 24VAC Hot Cooling Dry Contact 1 L Dry Contact 2 24vAC Common F T cow Humidify ab Humidifier Solenoid Outdoor Air Temp OAT 83 Valve Remote Room Sensor RRS x Outdoor Sensor OAT RRS Com OAT RRS Remote Room Fig 34 Single Stage Furnace Heating Only ndicates connection may not be required available 75 Variable Speed Multi Stage Thermostat Furnace Air Conditioner RVS Heat Stage 2 Heat Stage 1 Compressor Low Compressor High Fan 24VAC Hot Heating 7 24VAC Hot Cooling Dry Contact 1 Fl TLI A Dry Contact 2 24VAC Common Humidify HUM Humidifier Solenoid Outdoor Air Temp OAT Valve Remote Room Sensor RRS Outdoor Sensor OATIRRS Com OAT RRS Remote Room Sensor A06590 Fig 35 Variable Speed Multi Stage Furnace w Single Stage Air Conditioner 76 Thermostat RVS Heat Stage 2 Heat Stage 1 Compressor Low Compressor High Fan 24VAC Hot Heat
17. T6 PRH T6 NRH PREFERRED SERIES THERMIDISTAT B S ui A07045 A07044 Programmable Control Non Programmable Control NOTE Read the entire instruction manual before starting the installation TABLE OF CONTENTS PAGE SAFETY CONSIDERATIONS 2 INTRODUCTION dint Bekok gals he C e edes 3 INSTALLATION CONSIDERATIONS 4 INSTALLATION AES ee SEA LAS eee hale 8 SYSTEM START UP AND CHECKOUT 40 OPERATIONAL INFORMATION 51 TROUBLESHOOTING Gee ent ole 54 WIRING DIAGRAMS omnee eReheshtgee ee ete RI 58 THERMIDISTAT CONFIGURATION RECORD 78 SAFETY CONSIDERATIONS Read and follow manufacturer instructions carefully Follow all local electrical codes during installation All wiring must conform to local and national electrical codes Improper wiring or installation may damage Thermidistat Control Recognize safety information This is the safety alert symbol AN When you see this symbol on the equipment and in the instruction manual be alert to the potential for personal injury Understand the signal words DANGER WARNING and CAUTION These words are used with the safety alert symbol DANGER identifies the most serious hazards which will result in severe personal injury or death WARNING signifies a haza
18. U S A Edition Date 09 07 Catalog No IIT6 PRH 02 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Replaces IIT6 PRH 01 80
19. a minimum of 3 minutes If the setpoint is changed this timer is canceled allowing the equipment to turn off immediately when the demand is removed Heat Cool Setpoints Desired Temperature A minimum difference of 1 F and maximum of 6 F is enforced between heating and cooling desired temperatures This is done by allowing 1 setting to push the other to maintain this difference This difference is adjustable via Configuration Option 11 Equipment On Indicators When cooling equipment is on a COOL ON icon is displayed While cooling equipment operation is delayed by the time guard or cycle timer COOL ON will flash The same is true for HEAT ON icon During second stage compressor operation a 2 will be displayed with the HEAT ON or COOL ON icon This is displayed when the Thermidistat Control is configured as H2 A2 or h2 When the W is energized in a heat pump or Hybrid Heat system the auxiliary heat on icon will be displayed 52 Humidify and Dehumidify Indicators When the Display Module door is closed the humidify icon will be displayed when humidification is active and the dehumidify icon will be displayed when dehumidification is active Auto Changeover When auto changeover mode is selected a change from heat to cool or vice versa will not occur until an opposite mode demand has existed for 20 minutes If setpoint is changed 20 minute requirement is deleted Emergency Heat Mode When Thermidistat
20. agram Reference Chart and Fig 2 through 19 in Wiring Diagram section at the back of this piece literature The furnace dehumidify input acts differently depending on which style of variable speed select single stage or multi stage furnace control you have Vacation programmable models only A vacation selection is available specifically for times where the home will not be occupied for an extended period Vacation mode has an automatic hold meaning that setpoints are not affected by the programmed schedule Vacation mode is active for a specified period of time While in vacation mode the system provides temperature and humidity protection for the home in the selected mode but not comfort When vacation mode is active an arrow will be displayed beside VACATION in the upper left corner of the display 49 Vacation Setpoints A special set of temperature and humidity setpoints exist which are active in vacation mode They are adjustable by the homeowner are exclusively for vacation mode and are remembered from one vacation selection to the next See Table 3 for default values Table 3 Vacation Setpoints Default Values MODE AUTO Fan Auto Heat Setpoint 55 Cool Setpoint 85 Humidify Setpoint 20 Dehumidify Setpoint 60 Vacation Humidification Normal humidify is available using vacation setpoints Auto humidification is available adjusting its setpoint with outdoor temperature the same as w
21. an also be user configured as a non programmable Thermidistat Control When operating as non programmable the Thermidistat Control will still have both temperature and humidity control The non programmable Thermidistat Control features Touch N settings for quick and easy temperature change without complicated programming schedules The non programmable Thermidistat Control will still have both temperature and humidity control And its Touch N Go technology enables the user to switch between three different user configurable settings through intuitive buttons located just below the display INSTALLATION CONSIDERATIONS Power This control is powered by 24VAC only It requires 24VAC Rh and or and terminals of the low voltage transformer to be connected to it for proper operation It will not operate without these 2 connections Rh and are connected via PCB breakout jumper See Fig 1 For applications using two 24VAC transformers one in the indoor unit and one in the outdoor unit connect the common from each to the C terminal Connect R from the indoor unit to the Rh terminal Connect R from the outdoor unit to the Rc terminal Then break jumper on the circuit board The W and HUM signals are taken from the Rh power and the G signal is taken from the Rc power If Thermidistat Control has been installed in a two transformer application that is later changed to a single transformer installation installer must install a
22. ct temperature and or humidity measurement 8 Make sure 2 wire pigtail is attached to Display Module mounting base This should come attached from the factory Attach two wire pigtail to the back of the Display Module via 2 pin keyed connector 9 Reattach Display Module body to mounting base by first setting on at top of mounting base and then push bottom corners of Display Module to snap into place See Fig 10 A07169 Fig 10 Attach Display to Backplate 17 10 Find suitable indoor mounting location for Equipment Control Module either near or on equipment See Fig 11 IMPORTANT NOTE Equipment Control Module should not be mounted to duct work or below any other controls or equipment i e humidistat humidifier etc 07217 Fig 11 Equipment Control Module on Equipment 11 Route wires through rear of Equipment Control Module using either a clearance hole or supplied standoff See Fig 12 18 A07227 Fig 12 Standoff 12 Match and connect equipment wires to proper terminals of each connector block being careful not to over tighten the screws Correct polarity must be observed when connecting the two wires from the Equipment Control Module to the Thermidistat Control mounting base If wires are con nected incorrectly the Display Module will not operate See Fig 7 8 and 9 13 Snap cover over top of Equipment Control Module See Fig 13 19 A07218 Fig 13 Cover on Equipment Control Module
23. d cool only systems Smart Recovery programmable models only Room Temperature Offset Adjustment Humidity Offset Adjustment Enable Auto Mode Cycles Per Hour Time Between Stages Backlight Configuration Dry Contact Outdoor Air Temperature Offset Adjustment Keypad Lockout High Cool Latch Temperature High Heat Latch Temperature Programmable Non Programmable programmable models only Number of Programmable Periods per Day programmable models only Minimum Cooling Setpoint Maximum heating Setpoint UV Light Reminder Humidifier Pad Reminder Programmable Fan programmable models only 25 Option 31 Daylight Savings Time Configuration programmable models only Option 32 Furnace Heat Staging Option 33 Single or Two Piece Installation Option 99 Reset to Factory Defaults TO ENTER CONFIGURATION MODE Press and hold FAN button for approximately 10 sec The Display Module is now in configuration mode It will automatically exit this mode if no button is pressed for 3 minutes Pressing the DONE button will exit configuration mode immediately WHILE IN CONFIGURATION MODE The option number is displayed in the heat setpoint location and the configuration setting is displayed in the cool setpoint location On the T6 PRH programmable model a box will surround the option number The mode button is used to move the box between the two displayed values The soft keys below the listed values may also be used t
24. dehumidification is done by controlling the compressor A variety of operating modes are available The dry contact must be configured for dehumidification in setup Option 19 See Wiring Diagrams for more information Outdoor Temperature Sensor Outdoor air temperature sensor is included in the box with the Thermidistat Control Optimum performance is obtained when an outdoor temperature sensor is used with the Thermidistat Control Plan installation so that 2 wires can be run from Equipment Control Module to an outdoor location preferably on the north side of the house or refer to Installation Instructions included with the outdoor temperature sensor for simplified connection Sensor can be mounted to outdoor unit and existing control wires may be used for its connection Details are provided in sensor instructions Remote Indoor Temperature Sensor A remote temperature sensor may be used with the programmable model where it is desirable to install the Thermidistat Control in a limited access location while measuring the temperature in the living space The remote room sensor may be used as a stand alone or average with local sensor Two Piece Thermidistat Configuration 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 be split into two pieces and mounted in separate locations As a single piece unit all required wiring must be broug
25. ditioner RVS Heat Stage 2 Heat Stage 1 Compressor Low Compressor High Fan 24VAC Hot Heating 24VAC Hot Cooling Dry Contact 1 Dry Contact 2 24VAC Common Humidify Humidifier Solenoid Outdoor Air Temp Valve f Remote Room Sensor Outdoor Sensor OAT RRS Com OATRRS Remote Room Sensor A06586 Fig 31 Variable Speed Multi Stage Furnace w 2 Stage Air Conditioner Indicates connection may not be required available 72 Single Stage Single Stage Thermostat Furnace Air Conditioner RVS Heat Stage 2 Heat Stage 1 Compressor Low Compressor High Fan 24VAC Hot Heating 24VAC Hot Cooling Dry Contact 1 Dry Contact 2 24VAC Common Humidify e Humidifier Solenoid Outdoor Air Temp Valve Remote Room Sensor Outdoor Sensor OAT RRS Com Remote Room A06587 Fig 32 Single Stage Furnace w Air Conditioner Indicates connection may not be required available 73 Thermostat Furnace Heat Pump RVS Heat Stage 2 O B W2 f Heat Stage 1 WMW1_ f Compressor Low Ya Compressor High Y Y2 F Fan 24VAC Hot Heating 24VAC Hot Cooling Dry Contact 1 Dry Contact 2 24VAC Common Humidify Y Humidifier Solenoid Outdoor Air Temp Valve Remote Room Sensor RRS Outdoor Sensor Sensor OAT RR
26. dule Connection ndicates connection may not be required available 58 Thermostat Fan Coil Heat Pump RVS Heat Stage2 o BW2 Heat Stage 1 W W1 Compressor Low T Compressor High YN2 s Fan Le F 24VAC Hot Heating 4 Rh u 24VAC Hot Cooling Dry Contact 1 IL Dry Contact 2 S 24VAC Common Humidify HUM f Humidifier Solenoid Outdoor Air Temp OAT Valve Remote Room Sensor RRS Outdoor Sensor OAT RRS Com OAT RRS Remote Room Sensor Fig 18 FV FK Fan Coil w 2 Stage Heat Pump ndicates connection may not be required available 59 A06573 Typical Single Stage Thermostat Fan Coil Heat Pump RVS Heat Stage 2 O B W2 F Heat Stage 1 W W1 f Compressor Low Compressor High YN2 gt Fan Le F 24VAC Hot Heating 24VAC Hot Cooling Dry Contact 1 Dry Contact 2 24VAC Common Humidify Humidifier Solenoid Outdoor Air Temp Valve Remote Room Sensor RRS Outdoor Sensor OAT RRS Com OAT RRS Remote Room Sensor A06574 Fig 19 Typical Fan Coil w Heat Pump Indicates connection may not be required available 60 Thermostat RVS Heat Stage 2 Heat Stage 1 Compressor Low Compressor High Fan 24VAC Hot Heating 24VAC Hot Cooling Dry Contact 1 Dry Contact 2 24VAC Common Humidify Outdoor Air Temp Remote Room Sensor OAT RRS Com cub OAT Valv
27. e Humidifier Solenoid RRS Outdoor Sensor ra AT RRS Sensor Remote Room Fig 20 Fan Coil Shown w Aux Connection 1 Heat Pump Air Conditioner removed for clarity ndicates connection may not be required available 61 Aux Connection iat A06575 Thermostat RVS Heat Stage 2 Heat Stage 1 Fan Coil ors wa wm F Air Conditioner Compressor Low Compressor High Fan 24VAC Hot Heating 24VAC Hot Cooling Dry Contact 1 Dry Contact 2 24VAC Common Humidify Humidifier Solenoid Outdoor Air Temp Valve Remote Room Sensor Outdoor Sensor OAT RRS Com Remote Room Sensor A06576 Fig 21 FV FK Fan Coil w 2 Stage Air Conditioner ndicates connection may not be required available 62 Typical Single Stage Thermostat Fan Coil Air Conditioner RVS Heat Stage 2 O B W2 Heat Stage 1 W W1 Compressor Low Compressor High Fan 24VAC Hot Heating 24VAC Hot Cooling Dry Contact 1 Dry Contact 2 24VAC Common Humidify S Humidifier Solenoid Outdoor Air Temp Valve I Remote Room Sensor Outdoor Sensor Sensor OAT RRS Com OAT RRS Remote Room A06577 Fig 22 Typical Fan Coil w Air Conditioner ndicates connection may not be required available 63 Thermostat Fan Coil RVS Heat Stage 2 O B W2
28. e system is to be left in operation after installation is complete use MODE button to select between HEAT COOL or AUTO to provide desired operation of heating cooling or auto 41 On the programmable models the default setpoints and programmed schedule conform to the Energy Star requirements of the U S Department of Energy for both heating and cooling These provide energy saving temperature settings Refer to Table 1 Table 1 Energy Star Default Schedule SCHEDULE HEAT COOL Wake 6 00 AM 68 F 78 F Day 8 00 AM 60 F 85 F Evening 5 00 PM 68 F 78 F Sleep 10 00 PM 60 F 82 F If the programmed schedule is to be used make sure the triangle icon next to the FOLLOW SCHEDULE icon is turned on Pressing the Schedule button will cycle the triangle icon through the FOLLOW SCHEDULE HOLD and VACATION selections If fixed temperatures are desired use SCHEDULE button to turn on arrow icon next to HOLD This will maintain setpoints not allowing them to change with programmed schedule The FAN button may be used to select between AUTO fan on only with equipment and On fan on continuously fan modes For further information on temperature selection and programming refer to Homeowner s Guide Setting The Clock Calendar Daily Schedule and Vacation Settings programmable models only To set the clock press the SET button once The Clock will be displayed at the bottom center of the screen Use
29. g to the outside Exposed to direct light or heat from a lamp sun fireplace or other temperature radiating objects which could cause a false reading e Close to or in direct airflow from supply registers and return air regis ters e nareas with poor air circulation such as behind a door or in an al 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 configuration the Display Module and Equipment Control Module are connected by two wires Install Thermidistat Control A WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death Before installing Thermidistat Control turn off all power to equipment There may be more than 1 power disconnect 10 4 CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation 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 off all power to equipment 2 If an existing Thermidistat Control is being replaced a b c d Remove existing control from wall Disconnect wires from existing control 1 at a time As each wire is disconnected record wire color and termina
30. he home A humidify setpoint between 10 and 4646 in 296 increments relative humidity is selected by the homeowner or all humidification can be turned off When humidity in home drops below setpoint humidifier will be turned on to raise humidity level Humidification can only occur while heating See Table 2 for reference 43 Table 2 Humidification Selections HUMIDIFY SETPOINT SELECTION FAN DISPLAY DISPLAY Normal Humidify Blank 10 46 Auto Humidify AUTO 1 9 Humidify Off Blank OF Off 1 Humidify In normal humidify humidifier will be on if there is humidity demand and any heating equipment is on This will include furnace heat pump or auxiliary heat 2 Auto Humidify Thermidistat control will automatically adjust the humidity setpoint ac cording to the outdoor temperature As the outdoor temperature de creases the humidity setpoint also decreases Settings ranging from 1 to 9 1 being the lowest and 9 the highest will be visible to the homeowner See Fig 15 for outdoor temperature indoor humidity relationship in auto humidify mode Humidify Off The humidify function can be turned off completely This does not re quire changing existing setpoints To Select Humidification programmable Press the soft key below the humidify icon to bring up humidity select screen Humidify options are only available when in Heating mode When system is in AUTO mode humidify options are available if the
31. hen occupied Vacation humidification can be turned off independently of occupied humidification While setting the Vacation setpoints the Vacation humidify setpoint is accessible by pressing the soft key below the humidify icon when the box is around the heating setpoint Vacation Dehumidification Normal Dehumidify Cool to Dehumidify and Dehumidify OFF are all available in vacation mode and selection of one of these can be different from that of occupied Vacation dehumidification selection and setpoints are remembered the next time vacation is used While setting Vacation setpoints the Vacation dehumidify setpoint is accessible by pressing the soft key below the dehumidify icon when the box is around the cooling setpoint 50 OPERATIONAL INFORMATION Timers Five Minute Compressor Timeguard This timer prevents compressor from starting unless it has been off for at least 5 minutes It can be overridden for 1 cycle by simultaneously pressing FAN and UP buttons Cycle Timer Based on the selection of 2 4 or 6 cycles per hour this timer is set to 30 15 or 10 minutes This much time must elapse from the start of one cycle before another cycle can start It serves to impose the cycles per hour limits It can be defeated for one cycle by simultaneously pressing the FAN and UP buttons Ten Minute Staging Timer In multistage heating or cooling this timer prevents any higher stage from turning on until preceding stage has been on for 10
32. hr Recommended selections are disposable filter 800 to 2400 hr media filter 2400 to 3200 hr or electronic air cleaner 1600 to 2400 hr of blower operation For higher efficiency filters please consult filter s Installation Instruction for details Option 03 Fahrenheit Centigrade Select between Fahrenheit F and Centigrade C operation Factory default is Fahrenheit F Option 04 Fan G On With W W1 This selection determines whether fan G output is to be On or OFF when any W W1 furnace or strip heat output is On Most furnaces and fan coils manage 27 their own blowers and do not require separate G signal For these applications select OFF Some auxiliary heaters require separate G signal to turn on blower In this case select On Default is OF off Option 05 Room Air Temperature Sensing programmable models only This selection determines which sensor the control will use for measuring room air temperature Room air temperature can be sensed in one of three ways the local sensor L located on the Display Module the remote room air sensor r or the average of local and remote sensors Lr Settings are L r Lr Default is L Option 06 Cooling Lockout Below 55 F This selection disables cooling when outdoor temperature is below 55 F It requires an outdoor temperature sensor Setting is not available if valid outdoor sensor is not connected Set to OF off to allow cooling below 55 F Set to On to pre
33. ht to the Equipment Control Module for connection to the terminal strip In two piece configuration the Display Module can be mounted in the living space while the Equipment Control Module may be mounted near the indoor furnace or fan coil Connection from the display to the Equipment Control Module requires only two wires All other control wires are connected to the Equipment Control Module from the HVAC equipment This configuration results in a slimmer display and locates the Equipment Control Module containing the switching relays away from the main living space where relay clicking will not be heard INSTALLATION Carton contains the following components See Fig 2 for T6 PRH Fig 3 for T6 NRH 07752 Fig 2 T6 PRH Carton Contents 1 Display Module 2 Stand off for Equipment Control Module 3 Outside Air Temperature Sensor screws and pigtail 4 Equipment Control Module A07753 Fig 3 T6 NRH Carton Contents 1 Display Module 2 Stand off for Equipment Control Module 3 Outside Air Temperature Sensor screws and pigtail 4 Equipment Control Module Thermidistat Control Location Thermidistat Control should be mounted Approximately 5 ft 1 5m from floor e Close to or in a frequently used room preferably on an inside parti tioning wall Onasection of wall without pipes or duct work Thermidistat Control should NOT be mounted Close to a window on an outside wall or next to a door leadin
34. i AVS C 2 Single stage Hybrid Heat 25 YIY2 OM2 B wi wii RVS H 56 Table 4 Equipment Configuration Outputs cont EM EQUIPMENT COOL COOL HEAT HEAT HEAT CONFIGURATION HARDWARE STAGE STAGE STAGE STAGE STAGE STAGE OPTION 1 CONFIGURATIO 1 2 1 2 3 i Two stage y1 Y1 1 Hybrid Heat 28 Yi wnt wnt RISC OWAB Two stage y1 1 Y1 Hybrid Heat 28 wnt wnt nig 2 OWAB ops Heat Only Unit HP ww 28 Cool Only Unit 28 Yi M I y YN2 AC Cool Only Unit HP 2 2 57 WIRING DIAGRAMS Display module Display module wall mount Equipment Control Module Fan Coil Heat Pump V V RVS Heat Stage 2 O B W2 n w3 J Lg w2 n Heat Stage 1 wwi w2 Compressor YN2_ 4 Y Not Used Yi G E EUR 24VAC Hot Heating q Rh 24VAC Hot Cooling Re DryContact1 Di DryContact2 Hoz 24VAC Common c H COM Outdoor Air Temp OAT_ gt Remote Room Sensor T Outdoor Sensor OATIRRS Com OATRRS P Romae Room ensor A07164 Fig 17 Display to Equipment Control Mo
35. ing 24VAC Hot Cooling Dry Contact 1 Dry Contact 2 24VAC Common Humidify Outdoor Air Temp Remote Room Sensor OAT RRS Com Single Stage Furnace O B W2 W W1 Humidifier Solenoid Outdoor Sensor OAT RRS Remote Room Sensor Valve Single Stage Air Conditioner A07760 Fig 36 Single stage Furnace with Air Conditioner and Split Power ndicates connection may not be required available NOTE Rc Rh jumper is cut on the Equipment Control Module TI THERMIDISTAT CONFIGURATION RECORD Installer Model Number Date A Hardware Configuration Z Seal Hole In Wall B Mode Settings Mode Off Heat Cool Auto Em Heat Heating Setpoint Value Cooling Setpoint Value Fan Auto or On C Home Away Sleep Settings Heat Cool Home Away Sleep D Schedule For Programmable Thermidistat Controls Period 1 Period 2 Period 3 Period 4 Time Heat Cool Time Heat Cool Time Heat Cool Time Heat Cool All Days Weekdays Weekend 78 E Configuration Options Option 01 Option 02 Option 03 Option 04 Option 05 Option 06 Option 07 Option 08 Option 09 Option 10 Option 11 Option 12 Option 13 Option 14 Option 15 Option 16 Option 17 Option 18 Equipment Type Clean Filter Timer Adjustment Fahrenheit Centigrade Selection Fan G on with W W1 Selection Room Air Temperature Sensing programmable models only
36. inish the cooling cycle on high stage If the cooling equipment is energized to satisfy a dehumidify demand only no cooling demand the latch will not be applied On The Y1 and Y Y2 outputs are simultaneously energized to satisfy all cooling demands Default is OF off Option 23 High Heat Latch Temperature This selection is only available when Option 1 is set to H2 or h2 and Option 7 zoning is set to OF off Configuration settings are OF off 20 25 30 35 40 45 50 On OF off Heating always starts in low stage Y1 and stages up to high stage Y1 and Y Y2 when demand is sufficient and staging timer constraints have been satisfied 20 50 F Outdoor temperature below which both first and second stages of the compressor are energized to satisfy all heating demands When a cycle starts under a high heat latch it will finish the heating cycle on high stage 35 On The Y1 and Y Y2 outputs are simultaneously energized to satisfy all heating demands Default is OF off Option 24 Programmable Non Programmable programmable models only This selection allows the installer to configure the Thermidistat Control as either programmable or non programmable Selections are P nP Default is P Option 25 Number of Programmable Periods programmable models only This selection allows the installer to configure the Thermidistat Control for two or four periods per day Two periods is a common commercial a
37. l indicate in the outdoor temperature location E4 If Thermidistat Control s internal memory fails E4 will be displayed Replace Thermidistat Control ES If Thermidistat Control cannot properly read humidity E5 will be displayed Replace Thermidistat Control If both Humidify and Dehumidify have been set to OF the humidity value will be shown as when viewed from the humidity menu but no E5 will be shown in the display Table 4 can be used as a troubleshooting tool for determining which outputs will be active for a particular configuration and each operating mode 55 Table 4 Equipment Configuration Outputs EM EQUIPMENT COOL COOL HEAT HEAT HEAT CONFIGURATION HARDWARE STAGE STAGE STAGE STAGE stace HEAT OPTION 1 CONFIGURATION 1 2 1 2 3 STAGE 1 Single stage AC AC 2 wii Single stage AC 25 2 WW OM2 B Single stage HP 2 2 1 RVS C YY Www I YIY2 Single stage HP YIV2 N RVS H vna O W2 B on NOR Single stage HP YIY2 2 RVS C 5 ONW2JB 2 ww WW 2 Single stage HP 2 7 RVS H 5 vive wing YIY2 wii Two stage AC 28 1 Y WW OW2B Y1 Y1 Two stage HP Y1 Y1 28 2 Y1 YIY2 WM RVS C O W2 B OW2 B YIY2 wit 1 1 Two stage HP 1 1 2 RVS H 2s y YN2 pug Owa WMI wi Single stage YIN2 Hybrid Heat 28 2 wii wi
38. l marking New or additional wire may be needed to accommodate added hu midity outputs Discard or recycle old control 11 4 CAUTION ENVIRONMENTAL HAZARD Failure to follow this caution may result in environmental damage Mercury is a hazardous waste Federal regulations require that Mercury be disposed of properly Two Piece Installation 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 from back of Display Module by pressing the two tabs on the bottom edge and pulling away See Fig 4 and 5 12 A07225 Fig 4 Press Tabs to Remove Backplate A07226 Fig 5 Take Apart 13 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 E o Fig 6 Backplate Mounting A07165 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 Secure rear plastic mounting base to wall with 2 screws and anchors pro vided Additional mounting holes are available for
39. last system operation was a call for heat 44 To Select Humidification non programmable Press the features button twice The first press displays the outdoor air temperature and the second press displays the humidity value and humidify target Pressing the mode button shall cycle through the available humidification selections Off Humidify and Auto Humidify Additional Humidify Comments The humidifier is actually turned on when humidity is 1 below setpoint and turned off when it reaches 1 above setpoint This built in hysteresis prevents humidify output from toggling on and off when humidity level is near setpoint Dehumidification Dehumidification is done only during cooling Depending on type of equipment used compressor speed blower speed setpoint adjustment and equipment cycling are modified to provide added dehumidification A dehumidification setpoint separate from humidification setpoint is available to the homeowner It can range from 46 to 66 relative humidity When actual humidity is higher than setpoint a dehumidification demand exists The Thermidistat Control responds by activating the dry contact when enabled in Option 19 It may also control the compressor and blower depending on equipment type and dehumidify selection choice The 3 available selections are described below A mandatory 5 minute blower off delay will be enforced if there has been a call for dehumidification during a cooling call The amo
40. ler to limit access to the keypad Selections are OF off 1 2 OF off The user has full access to the keypad 1 The user has access to change the setpoints 2 The entire keypad is locked When a button is pressed the backlight will turn on but none of the operating parameters will be changed When the keypad lock selection is turned on the padlock icon will be displayed To unlock the keypad press and hold the UP DOWN buttons simultaneously for five seconds When the keypad is unlocked the padlock icon will turn off The keypad will remain unlocked for two minutes after the last button press After two minutes with no button presses the keypad will lock again The keypad will not lock in the software configuration mode or in the installer test mode Default is OF off 34 Option 22 High Cool Latch Temperature An outdoor sensor is required for high cool latch feature This selection is only available when Option 1 is set to H2 A2 or h2 and when Option 7 zoning is set to OF off Configuration settings are OF off 80 85 90 95 100 105 110 On OF off Cooling always starts in low stage Y1 and stages up to high stage Y1 and Y Y2 when demand is sufficient and staging timer constraints have been satisfied 80 110 F Outdoor temperature above which both first and second stages of the compressor are energized to satisfy all cooling demands When a cycle starts under a high cool latch it will f
41. n allows the installer to set the Thermidistat Control to automatically change by one hour on the specified day month and week specified OF off Daylight Savings Time Function disabled 1 2 On The first time the UP DOWN button is pressed the value of this selection changes from OF off to 1 When 1 is displayed the days of the week and clock digits will be turned on The installer will set the start date Spring for Daylight Savings Time by setting the day of the week by selecting the appropriate triangle icon next to the days of the week the month of the year will be set in the clock hours location range 1 12 and the week of the month will be set in the clock minutes location The week of the month selections will be F 2 3 4 and L for First 2nd 3rd 4th and Last So for the first Sunday in April the display would show SUN 4 F When 2 is displayed the installer will then 38 choose the end date for daylight savings time Fall To activate the function the installer changes the 2 by pressing the up button and On is displayed The setting shall be left On to enable the Daylight Savings Time function Default is On on Option 32 Furnace Heat Staging Control available only when the Thermidistat Control is configured to operate AC or A2 equipment 1 Thermidistat Control controls W1 output only and furnace controls the turn on and turn off of higher stages of heat 2 Thermidistat Contr
42. nes the minimum number of minutes of equipment operation on the highest compressor stage before allowing the transition to auxiliary heat Available selections are 10 15 20 and 25 The time between stages of any individual piece of equipment such as low speed and high speed compressor or fan coil stages will be fixed at 10 minutes Default is 15 31 Option 18 Backlight Configuration When OF off the backlight will be lit for 10 seconds after a button is pressed After 10 seconds of no button presses the backlight turns off When On the backlight will normally be on and dim in appearance The backlight brightness becomes brighter when a button is pressed After 10 seconds of no button presses the backlight will return to the dimmer level until another button press occurs The range of brightness is 1 through 5 with 5 being full brightness Default is 3 Option 19 Dry Contact Configuration programmable models only There are 3 available selections OF 1 and 2 OF The dry contact is always de energized 1 The dry contact will be energized for the specified number of minutes per hour This selection is programmable by period When this selection is changed from OF to 1 the period icons are shown and the minute segments of the clock display are shown The triangle icon next to the WAKE period will be on and a value between 0 and 60 will be shown in the minutes display See Operational Information and Wiring Diagram
43. ng as dehumidify demand exists Like humidify dehumidify actions are initiated when humidity is 1 above setpoint and are terminated when humidity drops to 1 below setpoint This prevents unnecessary toggling of dehumidify actions when humidity is near setpoint Dehumidify Output and Equipment Connections When there is a dehumidify demand dry contact is activated meaning that a 24VAC signal is removed from the DHUM output terminal In other words dehumidify output logic is reversed output is turned On when no dehumidify demand exists and is turned OFF when demand exists 48 Bryant FK and FV series variable speed fan coils all variable speed furnaces and select single and multi stage furnaces with the dehumidify connection have dehumidify inputs which connect directly to Thermidistat Control dry contact Refer to the furnace literature for dehumidification options The FK and FV series fan coils have a terminal marked DH which should be connected to the Thermidistat control dry contact output Jumper J1 on fan coil MUST be removed It is located behind the DH terminal Additionally blower delay tap on fan coil should be set to 0 0 no On delay and no OFF delay when using cool to dehumidify With this selection the blower stops when G signal is removed preventing re evaporation of water from the coil which would occur during the normal 90 sec blower off delay See fan coil installation instructions for more information See Wiring Di
44. ntrol for a particular installation Most are not presented to the homeowner and therefore must be properly set by the installer Only those marked with an asterisk below are available to the homeowner The homeowner configurations are described in the owner s manual A special procedure allows entry into the configuration mode While in configuration mode up to 33 selections can be made Description of each selection and how to use the configuration mode follows CONFIGURATION OPTIONS SUMMARY Option 01 Equipment Type Option 02 Clean Filter Timer Adjustment Option 03 Fahrenheit Centigrade Selection Option 04 Fan on with W W1 Selection Option 05 Room Air Temperature Sensing programmable models only Option 06 Cooling Lockout Below 55 F Selection only available if outdoor air sensor is present Option 07 Zoning Option 08 Auxiliary Heat Lockout Temperature Setting only available when heat pump is used and when outdoor air temperature sensor is present Option 09 Heat Pump Lockout Temperature Option 10 Reversing Valve 24 Option 11 Option 12 Option 13 Option 14 Option 15 Option 16 Option 17 Option 18 Option 19 Option 20 Option 21 Option 22 Option 23 Option 24 Option 25 Option 26 Option 27 Option 28 Option 29 Option 30 Adjustable Setpoint Deadband not available on heat only an
45. o move the box between selected values The value inside the box is changed by using the UP DOWN buttons On the T6 NRH non programmable model one of the values will be flashing The mode button is used to change which value is flashing or the Home and Sleep buttons may also be used to select which value to flash The value that is flashing is changed by using the UP DOWN buttons All changes made are saved at the time of selection and will be saved in the event of the 3 minute time out or when installer exits from configuration menu Configuration Options Selection Option 01 Equipment Type Range H2 A2 HP AC hh h2 C 26 H2 operates a two speed heat pump with fan coil HP operates a single speed heat pump with a fan coil A2 operates a two speed AC AC operates a single speed AC hh operates a single speed heat pump with a furnace h2 operates a two speed heat pump with a furnace H operates a heat only system Furnace or fan coil only no outdoor unit C operates a cool only system Outdoor AC unit with an indoor fan coil with no strip heaters Default is H2 Option 02 Clean Filter Timer Select hours of blower operation heating cooling or fan before CHECK FILTER icon is displayed With OF selected icon will never come on disabling this feature Time selection can range from 800 to 7200 hr by selecting numbers 1 through 9 Time is 800 X number selected Default is 4 3200
46. ol will control the W1 and O W2 B outputs Default is 1 Option 33 Single or Two Piece Installation This configuration allows the Thermidistat Control to compensate for the amount of heat generated by the Thermidistat Control electronics to allow more accurate sensing of the temperature sensor The amount of heat compensation will be different between single installation and two piece installation Range 1P or 2P 1P The installation is single piece 2P The installation is two separate pieces Default is 2P Option 99 Reset to Factory Defaults Use this capability to reset the Thermidistat to out of the box conditions BEWARE configuration settings program settings clock and calendar which have been manually entered will be lost When this option is selected the configuration number 99 will appear on the left and 10 will appear on the right To perform the reset first use the MODE key 39 to move the box from the 99 to the 10 programmable model or to flash the 10 non programmable model Then press and hold the DOWN key The 10 will start counting down toward zero If the DOWN key is kept pressed until the count reaches zero the reset will be performed When the value reaches zero the heat setpoint shall display The cool setpoint shall display and the room air temperature shall display Fd When the factory defaults have been restored the Thermidistat Control will act as if power was cycled and
47. ontact can be used for this function The G terminal can be connected to one of the dry contact terminals with the other terminal being connected to Rc and or Rh for timed control of the fan Note that this is not the same as programmable fan Option 30 See Wiring Diagrams for more information TROUBLESHOOTING If the display module doesn t power up after power is applied check the Rc Rh and C terminals for 24VAC If 24VAC is present check the voltage between Vg and V This voltage will be approximately 12 20VDC If voltage is present check the polarity to make sure it is wired correctly The display will not power up if polarity is reversed Error Codes If Thermidistat Control cannot properly read room temperature display will indicate and all outputs except fan if on will turn off In the case where the installer has selected to average the local sensor and the remote room sensor the Thermidistat Control display will alternate between for the failed sensor and the temperature sensed by the working sensor every 10 54 seconds The control will operate from the temperature sensed by the working sensor El If the Display Module and the Equipment Control Module cannot communicate via two wire connection an E1 will be displayed E2 There is no E2 error message E3 If Thermidistat Control cannot properly read outdoor temperature and it is needed for proper operation display wil
48. oper connector block and terminal on Equipment Control Module with 1 4 in extra length See Fig 14 21 A07219 Fig 14 Equipment Control Module Match and connect equipment wires to proper terminals of each connector block Push any excess wire into wall and against Equipment Control Module Seal hole in wall to prevent air leaks Leaks can affect operation and cause incorrect temperature and or humidity measurement Remove 2 wire pigtail from Thermidistat Control mounting base and at tach to Equipment Control Module terminal block terminals V and Vg Attach two wire pigtail to the back of the Display Module via 2 pin keyed connector Reattach Display Module body to Equipment Control Module by first setting on at top and then push bottom corners to snap into place See Fig 15 22 A07221 Fig 15 Reattach Display Module 9 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 appears on large display which identifies Thermidistat Control configuration Refer to Option 33 AC HP Pe hoe P o gt p 1 stage air conditioner 1 stage heat pump 2 stage air conditioner 2 stage heat pump Hybrid Heat system with 1 stage heat pump Hybrid Heat system with 2 stage heat pump heating only system cooling only system 23 Set Thermidistat Control Configuration Configuration options enable the installer to configure the Thermidistat Co
49. or Air Temp OAT y Valve DO Remote Room Sensor RRS a Outdoor Sensor OAT RRS OATIRRS Remote Room Sensor A06580 Fig 25 Typical Fan Coil Heating Only Indicates connection may not be required available 66 Thermostat RVS Heat Stage 2 Heat Stage 1 Compressor Low Compressor High Fan 24VAC Hot Heating 24VAC Hot Cooling Dry Contact 1 Dry Contact 2 24VAC Common Humidify Outdoor Air Temp Remote Room Sensor OAT RRS Com Fig 26 Thermidistat Control w Dry Contact Control for Fan Run Time Indicates connection may not be required available lt Ik o N HUM OAT RRS OAT RRS 67 Thermostat Fan Coil Air Conditioner RVS Heat Stage 2 Heat Stage 1 Compressor Low Compressor High Fan 24VAC Hot Heating 24VAC Hot Cooling Dry Contact 1 Dry Contact 2 24VAC Common Humidify Humidifier Solenoid Outdoor Air Temp Valve Remote Room Sensor Outdoor Sensor i OAT RRS Com Remote Room Sensor A06582 Fig 27 FV FK Fan Coil w 1 Stage Air Conditioner Indicates connection may not be required available 68 Typical Single Stage Thermostat Fan Coil Air Conditioner RVS Heat Stage 2 O B W2 Heat Stage 1 W W1 Compressor Low Compressor High YN2 F 1 F F 24VAC Hot Cooling Dry Contact 1 Dry Contact 2 T
50. pplication and four periods is more common for residential This selection is not available if Option 24 has been set to nP to configure the Thermidistat Control for non programmable operation 2 Periods DAY and SLEEP are available 4 Periods WAKE DAY EVE and SLEEP are available Default is 4 Option 26 Minimum Cooling Setpoint This selection allows the installer to configure the minimum cooling setpoint that the user is allowed to set The range is based on the value of the adjustable deadband Option 11 such that the minimum of the range is 50 F plus the adjustable deadband and the maximum is 90 F Default is 52 F based on the adjustable deadband default 2 36 Option 27 Maximum Heating Setpoint This selection allows the installer to configure the maximum heating setpoint The range is based on the adjustable deadband value Option 11 such that the minimum of the range is 50 F and the maximum is 90 F minus the deadband Default is 88 F based on the adjustable deadband default 2 Option 28 UV Light Reminder This selection allows the installer to select the number of months after which the UV Light icon will be displayed to indicate to the homeowner that it is time to call the dealer to have the UV Lights replaced Selections available are OF off 6 12 18 24 30 36 42 48 OF off The UV Light reminder is turned off and will never be displayed 6 48 The number of months after which
51. rd which could result in personal injury or death CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage NOTE is used to highlight suggestions which will result in enhanced installation reliability or operation 2 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 profile The Preferred Series Thermidistat has no need for batteries to store user configured settings in memory During power loss its internal memory saves settings for unlimited time and the clock continues to run for at least 24 hours An extension of Bryant s proven line of thermostats it provides separate setpoints for heating and cooling in addition to humidification and dehumidification In the Preferred Series Thermidistat Control s programmable configuration different heating and cooling setpoints and times are programmable for 4 periods per day or 2 periods per day Programming can be done for 7 days per week 5 2 days per week or 1 day The programmable Thermidistat Control c
52. s for further explanation of dry contact configuration and use To change the period or minutes press the soft key below the period or minutes and then use the UP DOWN buttons to change to the desired value 2 The dry contact will operate as a DEHUM relay This relay is reverse logic When the humidity level is above the dehumidify setpoint the dry contact D1 D2 will be opened When the humidity level is below the dehumidify setpoint D1 D2 will be closed There is a 2 hysteresis around the dehumidify setpoint to prevent rapid on off cycling of the DEHUM output When configured for dehumidification the Rc terminal must be connected to one of the dry contact terminals This provides power to energize the dehumidify 32 terminal on the cooling equipment when the dry contact is closed See Wiring Diagrams for more information Default is OF off Option 19 Dry Contact Configuration non programmable models only OF The dry contact is always de energized ON The dry contact will operate as a DEHUM relay This relay is reverse logic When the humidity level is above the dehumidify setpoint the dry contact D1 D2 will be opened When the humidity level is below the dehumidify setpoint D1 D2 will be closed There is a 2 hysteresis around the dehumidify setpoint to prevent rapid on off cycling of the DEHUM output When configured for dehumidification the terminal must be connected to one of the dry contact terminals
53. ump 40 installation only 1 stage of auxiliary heat is available Any staging of auxiliary heat must be managed by the furnace or fan coil While the heating test is active the humidify output can be toggled On the programmable models pressing the button below the humidify icon shall toggle the state of the humidify output On the non programmable models pressing the features button shall toggle the state of the humidify output Installer test for cooling is the same as described for heating above COOL ON will be displayed during cooling in Installer Test Mode While the cooling test is active the dehumidify icon shall be displayed if the dry contact has been configured as a DEHUM output On the programmable models pressing the button below the dehumidify icon shall toggle the state of the dry contact output On the non programmable models pressing the features button shall toggle the state of the dry contact In a heat pump application when the mode is set to em heat the auxiliary heat will turn on for 3 minutes The clock display will count down from 180 to 0 during this test TO TEST FAN Fan button switches FAN icon between AUTO and On While On is displayed G output will be energized turning fan on Allow up to 10 sec after button is pressed for fan to turn On and off On some fan coils fan continues to operate for 90 sec after G signal is removed Final Settings Be sure to press DONE to exit installer setup mode If th
54. unt of extra dehumidification available is very dependent on the type of equipment in the home Without a variable speed blower the system s ability to adjust dehumidification is very limited 45 1 Normal Dehumidify Operation When normal dehumidify is selected the compressor will not turn on without a cooling demand If dehumidify demand exists while cooling dry contact will also be active 24VAC removed This output commands variable speed blowers to reduce their airflow which improves water re moval from the cooled air 2 Cool to Dehumidify The cool to dehumidify selection tells the system to operate the compres sor within limits when there is a dehumidify demand even if there is no cooling demand The limits are that the system may overcool up to 3 F but no more while attempting to satisfy a dehumidify demand Within this 3 F range there is an additional balance between overcooling and humidity satisfaction When overcooling must occur the dehumidify set point is adjusted upward by 2 per degree of overcooling For example a cooling setpoint of 76 F and a dehumidify setpoint of 60 is equiva lent to a cooling setpoint of 75 F and a dehumidify setpoint of 62 This dehumidify setpoint change is internal to the Thermidistat Control and is not shown on the display 46 45 0 Target Humidity 20 45 40 5 D 5 10 15 20 25 a0 35 40 45 50 Outside Temperature A06599 Fig 16 Auto
55. vent cooling below 55 F Factory default is OF off Option 07 Zoning This selection should be set to On when the Thermidistat Control is to be used as part of a zoning system It is assumed that the zoning equipment will take care of time guard and cycle timers The minimum On time is still controlled by the Thermidistat Control Default is OF off Option 08 Auxiliary Heat Lockout Temperature This selection is available on heat pump systems with a valid outdoor temperature sensor connected Available settings are Off 5 10 15 20 25 30 35 40 45 50 55 28 OF off function is disabled Auxiliary heat is allowed to operate whenever sufficient demand for heat is available 5 55 F Outdoor temperature above which the auxiliary heat is not allowed to operate unless MODE is set to Emergency Heat Default is OF off Option 09 Heat Pump Lockout Temperature This selection is only available on Hybrid Heat systems A Hybrid Heat system is selected via the Option 1 Equipment Type configuration Configurations settings are OF off 5 10 15 20 25 30 35 40 45 50 55 OF off the heating cycle will always start with heat pump heating 5 55 F the outdoor temperature below which heat pump operation is not allowed When emergency heat mode is selected only auxiliary heat will operate Default is OF off Option 10 Reversing Valve This selection is only available on heat pump systems

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