Specified Controls SC-T32-TS Installation Manual

1 Introduction ............................................................................................................................................4 Getting Started .......................................................................................................................................5 Installing the Thermostat .....................................................................................................................6-8 Disassembly ..........................................................................................................................6 Thermostat Location ..............................................................................................................6 Mounting the Subbase ........................................................................................................6-7 Terminal Designations ............................................................................................................8 Setting the System Switches ..................................................................................................................9 System Switch Functions .....................................................................................................................10 Installing the Batteries ..........................................................................................................................11 Typical System Wiring Diagrams .....................................................................................................12-20 Heat only (Gas) ....................................................................................................................12 Heat only (Electric)................................................................................................................13 Cool only (Single or Multi-stage) ...........................................................................................14 1 Heat / 1 Cool (Gas) .............................................................................................................15 2 Heat / 2 Cool (Gas) .............................................................................................................16 2 Heat / 1 Cool (Heat Pump) ..................................................................................................17 3 Heat / 2 Cool (Heat Pump) ..................................................................................................18

2 TABLE OF CONTENTS 2 Heat / 1 Cool (Dual Fuel) ....................................................................................................19 3 Heat / 2 Cool (Dual Fuel) ....................................................................................................20 Installer Setup Menu .......................................................................................................................21-43 Entering the Setup Menu ......................................................................................................21 Selecting the Programmable or Non-programmable Operation ............................................22 Selecting Number of Program Events ...................................................................................23 Selecting Mode ....................................................................................................................24 Selecting Programmable Fan ...............................................................................................25 Assigning Auxiliary Contacts ................................................................................................26 Selecting Touchscreen Lock Options ....................................................................................27 Selecting the Cooling Setpoint Limit .....................................................................................28 Selecting the Heating Setpoint Limit .....................................................................................29 Selecting Back Light Option ..................................................................................................30 Selecting Adaptive Recovery Option ....................................................................................31 Selecting First Stage Heating and Cooling Differential Option ...............................................32 Selecting Second Stage Heating and Cooling Differential Option ..........................................33 Selecting Third Stage Heating Differential Option .................................................................34 Selecting Demand Staging or Locked Staging Option ...........................................................35 Sensor Calibration ...............................................................................................................36 Selecting Low Balance Point Option .....................................................................................37 Selecting High Balance Point Option ....................................................................................38 Selecting Fahrenheit or Celsius ............................................................................................39 Selecting Audible ON/OFF ...................................................................................................40

3 Timed Ventilation Duration ...................................................................................................41 Timed Ventilation Low Temp Limit .........................................................................................42 Timed Ventilation High Temp Limit ........................................................................................43 Daylight Saving Time ............................................................................................................44 Remote Sensor Installation .............................................................................................................45-47 Remote Sensor Types ..........................................................................................................45 SC-T-S1 Indoor Sensor Installation .................................................................................45-46 SC-T-OTS Outdoor Sensor Installation ................................................................................46 Temperature/Resistance Chart ............................................................................................47 Display Functions .................................................................................................................................48 Testing ............................................................................................................................................49-53 Fan Operation ......................................................................................................................49 Conventional Heating ...........................................................................................................49 Conventional Cooling .....................................................................................................49-50 Conventional Heat Pump .....................................................................................................50 Dual Fuel ..............................................................................................................................51 Low Balance Point ..........................................................................................................51-52 High Balance Point ...............................................................................................................52 Adaptive Recovery .........................................................................................................52-53 Programmable Fan ..............................................................................................................53 Auxiliary Contacts ................................................................................................................53 Timed Ventilation Setup ..................................................................................................................54-55 Basic Troubleshooting .....................................................................................................................56-57 Specifications .......................................................................................................................................58

the HVAC equipment. Using a common sense approach to the installation will ensure this product is installed properly and to the customer’s satisfaction. Please take time to read and understand this manual so that installation and testing is performed in an efficient manner. This manual is to be used in conjunction with the supplied User Manual. Although great care has been taken in the preparation of this manual, Specified Controls takes no responsibility for errors or omissions contained herein. It is the responsibility of the installer to ensure that this thermostat and the equipment connected to it operate in a safe and efficient manner. Due to ongoing product improvements, Specified Controls reserves the right to change the specifications of the SC-T32-TS thermostat or its components without notice. All rights reserved. ©Specified Controls 2019. Intellectual rights apply. 4

Time taken during the installation process will be rewarded with fewer call-backs. The steps required to install the SC-T32-TS thermostat are as follows. 1. Read and understand this Installation Manual and User Manual. 2. Mount and wire the subbase. 3. Install the batteries. 4. Set the 4 system switches to match the equipment application. 5. Wire optional remote temperature sensor(s). 6. Power the thermostat. 7. Set the Advanced Installer settings. 8. Test the thermostat. 5

DISASSEMBLY There are two release slots located on the bottom of the thermostat. Gently push the flat blade of a small screwdriver into one slot at a time and pry upward until the catch disengages. Carefully swing the thermostat upward and away from the subbase. (Figure 1) THERMOSTAT LOCATION The thermostat should be installed in a location that represents the ambient space temperature. Do not install the thermostat in an area where drafts are present, near the floor, behind doors or on an external wall. Avoid placing the thermostat in areas where the air movement is limited, affected by direct sunlight or other areas not typical of the temperature in the space. MOUNTING THE SUBBASE When mounting the thermostat subbase, be aware that drafts may travel down wall cavities and enter the back of the thermostat through the control wire hole in the wall. It is important to seal the hole to prevent any drafts that might affect the internal temperature sensor. FIGURE 1 6

Pull the control wires through the large opening in the thermostat subbase. Next, level and mount the subbase on the wall using the supplied anchors and screws. (Figure 2) Do not over tighten the mounting screws as the subbase may warp causing the improper seating of the thermostat connecting pins to the terminal blocks. Use a properly sized screwdriver and back each screw terminal out (counter clockwise) before landing each wire to its dedicated terminal. Do not over tighten the terminal screws. Check to ensure that all wires are landed correctly and dressed properly to prevent any shorts. Refer to Typical System Wiring Diagrams in this manual for proper wiring. FIGURE 2 7 S2 SC S1 O/B AUX AUX Y1 Y2 W1 G R C WIRE ACCESS HOLE BATTERY COMPARTMENT MOUNTING HOLES MOUNTING HOLES W2 MOUNTING HOLE

TERMINAL DESIGNATIONS TERMINAL DESIGNATION S2 Outdoor Sensor SC Sensor Common S1 Indoor Sensor AUX Auxiliary Contacts W2/OB Second Stage Heat or Reversing Valve Y1 First Stage Cool or First Stage Compressor Y2 Second Stage Cool or Second Stage Compressor W1 First Stage Heat/Auxiliary/Emergency Heat G Fan R 24 VAC Hot C 24 VAC Common 8

The thermostat contains a set of four system switches located on the thermostat printed circuit board. (Figure 3) The switches are used to match the thermostat operation and relay outputs with the HVAC system requirements. Refer to the system switch functions on the next page to properly configure the thermostat. FIGURE 3 9 1 2 3 4 ON DIP SYSTEM SWITCHES . . . . . . . . . . . .

Switch 1 - Equipment Type Switch 1 sets the equipment type. For conventional heat/cool equipment, set the switch to the OFF position (factory default). For heat pump equipment set the switch to the ON position. Switch 2 - Fan or When Switch 1 is OFF Reversing Valve For gas heat, set the switch to the OFF position (factory default). For electric heat, set the switch to the ON position. When Switch 1 is ON For ‘O’ reversing valve, set the switch to the OFF position. (factory default) For ‘B’ reversing valve, set the switch to the ON position. Switch 3 - Equipment Stages Switch 3 sets the number of equipment stages. OFF = 1 heat / 1 cool gas / electric or 2 heat / 1 cool heat pump or dual fuel. ON = 2 heat / 2 cool gas / electric or 3 heat / 2 cool heat pump or dual fuel. Switch 4 - Dual Fuel Mode For conventional heat pump equipment, leave switch 4 in the OFF position (factory default). For dual fuel equipment, set switch 4 to the ON position. 10

The thermostat comes with two AA batteries. Even if the thermostat is hardwired, battery backup is recommended to maintain the real-time clock in the event of a power failure. All other memory is non-volatile in the event of battery or primary power loss. Press in on the battery access compartment and slide the drawer out. Install the two AA batteries matching the + and - orientation. Push the battery compartment in until it clicks shut. When the batteries are properly installed, the touchscreen display will light up. (Figure 4) FIGURE 4 +- 11

HEAT ONLY (GAS) Switch Settings OFF Switch 1 = Heat/Cool Switch 2 = Equipment controls fan on call for heat OFF Switch 3 = Single Stage OFF Switch 4 = Leave OFF OFF 12 SC S1 Y1 Y2 W1 G R C FAN RELAY LINE 24 V W2 O/B S2 OPTIONAL REMOTE SENSOR TERMINALS THERMOSTAT EQUIPMENT OUTDOOR SENSOR INDOOR SENSOR HEAT 1 RELAY AUX AUX

HEAT ONLY (ELECTRIC) Switch Settings OFF Switch 1 = Heat/Cool Switch 2 = Thermostat controls fan on call for heat ON Switch 3 = Single Stage OFF Switch 4 = Leave OFF OFF 13 SC S1 Y1 Y2 W1 G R C FAN RELAY LINE 24 V W2 O/B S2 OPTIONAL REMOTE SENSOR TERMINALS THERMOSTAT EQUIPMENT OUTDOOR SENSOR INDOOR SENSOR HEAT 1 RELAY AUX AUX

COOL ONLY (SINGLE OR MULI-STAGE) Switch Settings OFF Switch 1 = Heat/Cool Switch 2 = Fan energized on call for cooling OFF Switch 3 = = Single Stage = Multi-stage OFF/ON OFF ON Switch 4 = Leave OFF OFF 14 SC S1 Y1 Y2 W1 G R C FAN RELAY LINE 24 V W2 O/B S2 OPTIONAL REMOTE SENSOR TERMINALS THERMOSTAT EQUIPMENT OUTDOOR SENSOR INDOOR SENSOR COOL 1 RELAY COOL 2 RELAY AUX AUX

1 HEAT/1 COOL (GAS) Switch Settings OFF Switch 1 = Heat/Cool Switch 2 = Fan energized on call for cooling OFF Switch 3 = Single Stage OFF Switch 4 = Leave OFF OFF 15 SC S1 Y1 Y2 W1 G R C FAN RELAY LINE 24 V W2 O/B S2 OPTIONAL REMOTE SENSOR TERMINALS THERMOSTAT EQUIPMENT OUTDOOR SENSOR INDOOR SENSOR COOL 1 RELAY HEAT 1 RELAY AUX AUX

2 HEAT/2 COOL (GAS) Switch Settings OFF Switch 1 = Heat/Cool Switch 2 = Fan energized on call for cooling OFF Switch 3 = Multi-stage ON Switch 4 = Leave OFF OFF 16 SC S1 Y1 Y2 W1 G R C FAN RELAY LINE 24 V W2 O/B S2 OPTIONAL REMOTE SENSOR TERMINALS THERMOSTAT EQUIPMENT OUTDOOR SENSOR INDOOR SENSOR COOL 1 RELAY HEAT 1 RELAY HEAT 2 RELAY COOL 2 RELAY AUX AUX

2 HEAT/1 COOL (HEAT PUMP) Switch Settings ON Switch 1 = Heat Pump Switch 2 = = ‘O’ = ‘B’ OFF/ON OFF ON Switch 3 = 2 Heat / 1 Cool HP OFF Switch 4 = Leave OFF OFF 17 SC S1 Y1 Y2 W1 G R C FAN RELAY LINE 24 V W2 O/B S2 OPTIONAL REMOTE SENSOR TERMINALS THERMOSTAT EQUIPMENT OUTDOOR SENSOR INDOOR SENSOR COMP 1 RELAY AUX RELAY REV VALVE AUX AUX

3 HEAT/2 COOL (HEAT PUMP) Switch Settings ON Switch 1 = Heat Pump Switch 2 = = ‘O’ = ‘B’ OFF/ON OFF ON Switch 3 = 3 Heat / 2 Cool HP ON Switch 4 = Leave OFF OFF 18 SC S1 Y1 Y2 W1 G R C FAN RELAY LINE 24 V W2 O/B S2 OPTIONAL REMOTE SENSOR TERMINALS THERMOSTAT EQUIPMENT OUTDOOR SENSOR INDOOR SENSOR COMP 1 RELAY AUX RELAY REV VALVE COMP 2 RELAY AUX AUX

2 HEAT/1 COOL (DUAL FUEL) Switch Settings ON Switch 1 = Heat Pump Switch 2 = = ‘O’ = ‘B’ Reversing Valve OFF/ON OFF ON Switch 3 = 2 Heat / 1Cool dual fuel OFF Switch 4 = Locks out heat pump when furnace is energized ON 19 SC S1 Y1 Y2 W1 G R C FAN RELAY LINE 24 V W2 O/B S2 OPTIONAL REMOTE SENSOR TERMINALS THERMOSTAT EQUIPMENT OUTDOOR SENSOR INDOOR SENSOR COMP 1 RELAY AUX RELAY REV VALVE AUX AUX

3 HEAT / 2 COOL (DUAL FUEL) 20 SC S1 Y1 Y2 W1 G R C FAN RELAY LINE 24 V W2 O/B S2 OPTIONAL REMOTE SENSOR TERMINALS THERMOSTAT EQUIPMENT OUTDOOR SENSOR INDOOR SENSOR COMP 1 RELAY AUX RELAY REV VALVE COMP 2 RELAY Switch Settings ON Switch 1 = Heat Pump Switch 2 = = ‘O’ = ‘B’ Reversing Valve OFF/ON OFF ON Switch 3 = 3 heat / 2 cool dual fuel ON Switch 4 = Locks out heat pump when furnace is energized ON AUX AUX

ENTERING THE SETUP MENU Tap the display to bring the back light on then press and hold both the and Clock Mode section for 5 seconds to enter the Installer Menu. To advance through the menu, touch Next. To back up in the menu, touch Back. To exit the menu at any time and save changes, press and hold Next for 4 seconds. NOTE: Depending on thermostat configuration, some menu items may not appear. 21 AM DST 01/01/2012

SELECTING THE PROGRAMMABLE OR NON-PROGRAMMABLE OPERATION The first menu 01 selects programmable or non-programmable operation. Press the or UP DOWN 7 arrows to change the selection. The factory default is . Program Morning Day Evening Night 7 = 7-Day Programmable (Factory Default) 0 = Manual Mode (Non-programmable) Back Next 22 o1

SELECTING NUMBER OF PROGRAM SCHEDULES ( ) ONLY DISPLAYED WHEN 01 = 7 If menu 01 is set to 7, the thermostat can be configured for 4 or 2 schedules per day. The factory default is . 4 4 = 4 schedules per day (Factory Default) 2 = 2 schedules per day Back Next 23 o2

SELECTING MODE Menu 03 selects the mode of operation. The factory default is . 0 0 = Auto-changeover (Heat/Cool/Auto/Off for Heat/Cool) (Heat/Cool/Auto/EHeat/Off for Heat Pump (Factory Default) 1 = Manual Changeover (Heat/Cool/Off) or (Heat/Cool/E.Heat/Off) 2 = Heating Only (Heat/Off) or (Heat/E.Heat/Off) 3 = Cooling Only (Cool/Off) Program Back Next 24 o3

SELECTING PROGRAMMABLE FAN Menu 04 selects the Programmable Fan option which allows selecting continuous or auto fan operation for each program event when programmable mode is selected. The factory default is . 0 0 = No Programmable Fan (Factory Default) 1 = Programmable Fan Program Refer to the User Manual for selecting continuous or auto fan for each scheduled event when the Programmable Fan option is ON. Back Next 25 o4

ASSIGNING AUXILIARY CONTACTS Menu 05 assigns the auxiliary dry relay contacts (AUX) as Normally Open or Normally closed when the Programmable Fan Option 04 is ON. Whenever Programmable Fan is in the mode (constant ventilation) for a selected program period, the relay Always On contact will go open or closed based on the auxiliary relay option selection. The auxiliary contacts are also used to open an outside air damper when Timed Ventilation is selected. (See details on page 55 and 56) 1 = Relay contacts closed when Programmable Fan is ON (Factory Default) 2 = Relay contacts open when Programmable Fan is ON 3 = Relay contacts used for Timed Ventilation Back Next 26 o5

SELECTING TOUCHSCREEN LOCK OPTIONS Menu 06 allows you to prevent changes to all or part of the touchscreen functions. The factory default is . Touch the or arrows to change the selection. 0 UP DOWN 0 = All functions unlocked (Factory Default) 1 = All functions locked except setpoint adjustment 2 = All functions locked Back Next 27 o6

SELECTING THE COOLING SETPOINT LIMIT Menu 07 selects the minimum cooling setpoint. The factory default is . Touch the or 50 UP DOWN arrows to adjust the limit from 43° - 122°F. Set Back Next 28 o7

SELECTING THE HEATING SETPOINT LIMIT Menu 08 selects the maximum heating setpoint limit. The factory default is . Touch the 90 UP DOWN or arrows to adjust the limit from 41° - 120°F. Set Heat Back Next 29 o8

SELECTING BACK LIGHT OPTION Menu 09 allows you to select the back light option. The factory default is . Touch the 0 UP or arrows to change the display option. DOWN 0 = Back Light on for 10 seconds when screen is touched 1 = Back Light on high for 10 seconds when screen is touched and then low continuously. (Thermostat must be hardwired to 24VAC for this option) Back Next 30 o9

SELECTING ADAPTIVE RECOVERY OPTION Menu 10 allows you to select the Adaptive Recovery option. Only displayed when 01 is set to 7. Adaptive Recovery compares the space temperature deviation from setpoint and rate of recovery history to bring the equipment on and reach the setpoint at the scheduled start time. The factory default is . Touch the or arrows to select this option. 0 UP DOWN 0 = No Adaptive Recovery (Factory Default) 1 = Adaptive Recovery On (For programmable mode only) Back Next 31 1o

SELECTING FIRST STAGE HEATING AND COOLING DIFFERENTIAL OPTION Menu 11 is used to adjust the heating and cooling differential. The factory default is (1°F). This represents the temperature above the cooling setpoint or below the heating setpoint when the equipment is energized. Touch the or arrows to change the UP DOWN differential. 1 = 1°F Differential 2 = 2°F Differential 3 = 3°F Differential Back Next 32 11

SELECTING SECOND STAGE HEATING AND COOLING DIFFERENTIAL OPTION Menu 12 is used to adjust the second stage heating and cooling differential. The factory default is (2°F). This represents the temperature above the first stage cooling 2 differential or below the first stage heating differential when second stage is energized. Touch the or arrows to change the differential. UP DOWN Adjustable from 1 - 10°F in 1° increments Back Next 33 12

SELECTING THIRD STAGE HEATING DIFFERENTIAL OPTION Menu 13 is used to adjust the third stage heating differential. Only displayed when SW1 and SW 3 are ON. The factory default is (2°F). This represents the temperature below 2 the second stage heating differential when third stage heat is energized. Touch the or UP DOWN arrows to change the differential. Adjustable from 1 - 10°F in 1° increments Back Next 34 13

SELECTING DEMAND STAGING OR LOCKED STAGING OPTION Menu 14 is used to select how the thermostat will stage the equipment. The factory default is which = . Demand Staging allows the thermostat to upstage 0 Demand Staging or downstage the equipment based on the stage differential settings. In dual fuel setup, the thermostat will not downstage to compressor if fossil fuel is energized. = 1 Locked Staging. Locked Staging allows the thermostat to upstage the equipment based on the stage differential settings but locks in each stage until the setpoint is reached. (No down- staging) 0 = Demand Staging (Factory Default) 1 = Locked Staging Back Next 35 14

SENSOR CALIBRATION Menu 15 allows you to re-calibrate the internal or a single indoor remote sensor. When a remote sensor is wired to the SC and S1 terminals, the internal sensor is automatically disabled. The factory default is (0°F). Touch the or arrows to adjust the 0 UP DOWN calibration from -9° to +9°F. Back Next 36 15

SELECTING LOW BALANCE POINT OPTION Menu 16 allows you to select a low balance point setting when the thermostat is configured for Heat Pump or Dual Fuel and an outdoor sensor is used. When the outdoor temperature falls below the balance point setting, the compressor is locked out and only auxiliary electric heat or dual fuel furnace is used for heating. The factory default is . OFF Touch the or arrows to select a low balance point setting. UP DOWN Adjustable from OFF, 1° to 77°F Remote outdoor sensor must be used Back Next 37 16

SELECTING HIGH BALANCE POINT OPTION Menu 17 allows you to select a high balance point setting when the thermostat is configured for Heat Pump or Dual Fuel. When the outdoor temperature rises above the balance point setting, the auxiliary electric heat or dual fuel furnace is locked out and only the heat pump is used for heating. The factory default is . Touch the or OFF UP DOWN arrows to select a high balance point setting. Adjustable from OFF, 32° to 122°F Remote outdoor sensor must be used Back Next 38 17

SELECTING FAHRENHEIT OR CELSIUS Menu 18 allows you to select temperature readings and temperature setpoints in Fahrenheit or Celsius. The factory default is (Fahrenheit). Touch the or F UP DOWN arrows to select (Celsius). C Back Next 39 18

SELECTING AUDIBLE ON/OFF Menu 26 allows you to select an audible beep whenever the screen is touched or to silence the beep. The factory default is audible beep . Touch the or arrows ON UP DOWN to change the selection. ON = Audible Beep OFF = Audible Beep Silenced Back Next 40 26

TIMED VENTILATION DURATION Menu 27 is used to select Timed Ventilation when Menu 05 is set to 3. Timed Ventilation is used to bring outside air into the home at a controlled CFM rate based on ASHRAE 62.2 - 2013 Ventilation and Indoor Air Quality Standard. See Ventilation Reference Chart on page 54 to calculate ventilation minutes per hour. Range = 0-60 minutes in 1 minute increments. Factory Default = 15 minutes. Back Next 41 27

TIMED VENTILATION LOW TEMPERATURE LIMIT Menu 28 is used to select a low outdoor temperature when a remote outdoor sensor is installed. If the temperature is lower than or equal to the selected value, Timed Ventilation is suspended. Menu 28 is only displayed if thermostat is fitted with an outdoor sensor. Range = OFF - 0-50 degrees in 1 degree increments. Factory Default = OFF. Back Next 42 28

TIMED VENTILATION HIGH TEMPERATURE LIMIT Menu 29 is used to select a high outdoor temperature limit when a remote outdoor sensor is installed. If the temperature is higher than or equal to the selected value, Timed Ventilation is suspended. Menu 29 is only displayed if thermostat is fitted with an outdoor sensor. Range = OFF - 60-90 degrees in 1 degree increments. Factory Default = OFF. Back Next 43 29

DAYLIGHT SAVING TIME Menu 30 is used to enable or disable Daylight Saving Time (DST). In areas of the country where DST is not observed, the feature can be disabled. Touch the or arrows UP DOWN to change the selection. 1 = DST (Factory Default) 0 = DST Disabled Back Next 44 30

45 REMOTE SENSOR TYPES The thermostat can accommodate both an indoor and outdoor remote sensor. For indoor applications, the SC-T-S1 remote sensor can be wired to the thermostat and terminals. Each sensor contains two thermistors wired in SC S1 series with a switch to select one or both sensors. This reduces the total number of sensors required for series/parallel temperature averaging. Whenever an indoor remote sensor is used, the thermostats internal sensor is automatically disabled. The SC-T-OTS outdoor remote sensor is wired to the and terminals. The SC S2 outdoor sensor thermistor is housed in a waterproof encapsulation and is ideally suited for ambient conditions ranging from -40 to 140°F and humidity levels of 5 to 95% RH (non-condensing). SC-T-S1 INDOOR SENSOR INSTALLATION Locate the sensor in the same manner as the thermostat. Mount the sensor 18” away from any outside wall. Do not install the sensor behind doors, in corners or other dead air spaces. Keep the sensor away from direct air flow, supply registers or near sources of heat such as lamps and appliances.

46 Use a separate 18-2 shielded cable for sensor wiring. Prior to wiring the sensor to the thermostat, use an ohm-meter or multi-meter to measure the resistance of the sensor. Measure at the end of the wires that will connect to the thermostat. Confirm the resistance value (within 5%) to the temperature where the sensor is mounted. Refer to the Temperature/Resistance Chart on page 41 of this manual. Use a high quality, digital electronic thermometer to read the temperature at the sensor. Remove the sensor cover and place the thermometer probe next to the thermistor to verify an accurate reading. Disconnect power to the thermostat when wiring the sensor to the proper sensor terminals. Strip only as much insulation off of the wires as necessary to provide a good contact with the terminals. The sensor is not polarity specific so either sensor lead may be connected to either designated terminal on the thermostat. Refer to the SC-T-S1 installation guide for additional information. SC-T-OTS OUTDOOR SENSOR INSTALLATION When the SC-T-OTS is wired to the SC-T32-TS, it will display the outside air temperature as well as control high and low balance points for heat pump or dual fuel systems. Refer to the SC-T-OTS installation guide for additional information.

47 TEMPERATURE/RESISTANCE CHART Temperature Resistance Temperature Resistance (°F) (K ) ( F) (K ) Ω Ω º 30 34.6 70 11.9 40 26.1 80 9.4 50 19.9 90 7.4 60 15.3 100 5.9 NTC type 2 sensor - 10K @ 77° F Ω

Auto E. heat Mon Tue Wed Thu Fri Sat Sun Outside Air Temperature Automatic Always On OFF Morning Day Evening Night Clean Screen 88/88/2088 Cool Heat Set Back Next Hold DAYS OF THE WEEK TIME OF DAY 12 HOUR ONLY WITH AM/PM INDICATION MONTH, DAY, YEAR DAYLIGHT SAVINGS TIME DISPLAYED WHEN DST IS ACTIVE (DST CAN BE DISABLED) DISPLAYED WITH OUTSIDE AIR TEMPERATURE AND FLASHES WHEN ANY OUTDOOR LIMIT IS EXCEEDED (OPTIONAL OUTDOOR SENSOR REQUIRED) SET TEMPERATURE OR OUTDOOR TEMPERATURE DISPLAY FAHRENHEIT ONLY CLEAN SCREEN WHEN TOUCHED, ALLOWS 30 SECONDS TO CLEAN SCREEN WHILE THERMOSTAT FUNCTIONS ARE LOCKED LOCK ICON DISPLAYED WHEN A FUNCTION CAN NOT BE ACCESSED OR EXCEEDING A SET LIMIT FLASHING LOW BATTERY INDICATOR WITH AUDIBLE WARNING BEEP UP AND DOWN ARROWS USED TO SET TEMPERATURE, TIME, DAY, MONTH, YEAR AND OTHER VALUES SPACE TEMPERATURE FAHRENHEIT ONLY MODE USED TO SELECT HEAT, COOL, AUTO, OFF OR E. HEAT ALSO DISPLAYS HEATING AND COOLING STAGES MODE BLINKS WHEN COMPRESSOR TIME DELAY IS ACTIVE FAN USED TO SELECT AUTOMATIC OR ALWAYS ON OPERATION PROGRAM USED TO PROGRAM EVENTS IN PROGRAMMABLE MODE ERROR NO FUNCTION FAN FLASHES WHEN TIMED VENTILATION IS IN USE

is displayed. Touch FAN until the words Mode OFF Always On appear. After a brief moment, the internal fan relay ‘G’ will energize and the system fan should operate. Touch again until the word appears. FAN Automatic After a brief moment, the internal fan relay will de-energize and the system fan will shut off. CONVENTIONAL HEATING Touch until the word appears. Touch the arrow and raise the Mode Heat UP setpoint above the space temperature and the first stage differential. After a brief moment, the internal heating relay ‘W1’ will energize and the heating system should operate. The word will flash continuously. If the thermostat has been Heat configured for two stage heating, raise the setpoint above the second stage differential and will flash indicating the ‘W2’ heating relay is energized. Heat 2 Touch until the word is displayed. Mode OFF CONVENTIONAL COOLING Touch until appears. Touch the arrow and lower the setpoint Mode Cool DOWN below the space temperature and the first stage differential.

the cooling relay ‘Y1’ is energized. will flash to indicate the thermostat is in Mode time delay. After the time delay, the internal fan ‘G’ and cooling relay ‘Y1’ will energize. The word will flash. If the thermostat has been configured for two Cool stage cooling, lower the setpoint below the second stage differential and Cool 2 will flash indicating the ‘Y2’ cooling relay is energized. Touch until the word Mode OFF is displayed. CONVENTIONAL HEAT PUMP When the thermostat is configured for conventional heat pump operation, testing is the same as a heating and cooling system with the exception that a 3 minute time delay is activated before the ‘Y1’ compressor relay will energize on a call for heating or cooling. will flash to indicate the thermostat is in time delay. Mode Depending on the mode of operation and equipment configuration, or Heat Cool will flash when the ‘Y1’ compressor relay is energized. or will flash Heat 2 Cool 2 when the ‘Y2’ compressor relay is energized. will flash when the Heat 2 3 auxiliary ‘W1’ relay is energized. will flash when the mode is set to E.Heat emergency heat. After testing, touch until the word is displayed. Mode OFF

a heating and cooling system with the exception that a 3 minute time delay is activated before the ‘Y1’ compressor relay will energize on a call for heating or cooling. will flash to indicate the thermostat is in time delay. Depending on Mode the mode of operation and equipment configuration, or will flash when Heat Cool the ‘Y1’ compressor relay is energized. or will flash when the ‘Y2’ Heat 2 Cool 2 compressor relay is energized. will flash when the auxiliary ‘W1’ relay is Heat 3 energized. will flash when the mode is set to emergency heat. Whenever E.Heat the thermostat calls for auxiliary heat, the heat pump compressor or compressors will be de-energized and the auxiliary heat will remain on until the call is satisfied. LOW BALANCE POINT (Heat Pump or Dual Fuel) When an outdoor sensor is used with the thermostat, Installer Option 16 allows you to select a low balance point temperature. When the outdoor temperature falls below the low balance point setting, a call for heat from the thermostat automatically energizes the ‘W1’ relay and bypasses the ‘Y1’ compressor relay.

temperature and force a call for heating. Only the auxiliary heat relay ‘W1’ should energize. After testing, reset the low balance point setting to a normal operating range. HIGH BALANCE POINT (Heat Pump or Dual Fuel) High balance point is designed to prevent the auxiliary heat ‘W1’ relay from energizing when the outdoor temperature is above the balance point setting. To test the high balance point setting, set Option 17 below the displayed outdoor temperature and force a call for auxiliary heat. Only the compressor ‘Y1’ and/or ‘Y1’ and ‘Y2’ should energize. If the thermostat is placed in the E.Heat (emergency heat) mode, the ‘W1’ relay will energize. After testing, reset the high balance point setting to a normal operating range. ADAPTIVE RECOVERY Adaptive Recovery is only available in programmable mode (Installer Option 01 = 7) The Adaptive Recovery function of the thermostat permits the user to program a time that a desired set temperature is required. The thermostat then calculates the most energy efficient time to bring on the equipment to reach the setpoint at

PROGRAMMABLE FAN Programmable Fan (Installer Option 04 = 0) is used to program the fan operation along with the thermostat schedule. This is a very convenient feature that allows selecting continuous (Always ON) or Automatic fan operation for each scheduled event. When Programmable Fan is used, the fan operation can still be overridden at the thermostat and will remain in the override mode until the next scheduled event. AUXILIARY CONTACTS The Auxiliary Contacts (Installer Option 05) provide a selectable normally open (1) or normally closed (2) dry contact output that works in conjunction with the Programmable Fan feature when the thermostat is configured for programmable mode. When the fan is in continuous (Always ON) mode, the auxiliary relay coil is energized and de-energizes in Automatic mode. The Auxiliary Contacts may also be used for Timed Ventilation when Installer Option 05 is set to 3.

the Programmable Fan Option 04 is ON. They can also be used for Timed Ventilation when Option 05 is set to 3. Timed Ventilation is designed to improve residential indoor air quality by introducing fresh, outside air through a 2-wire, power open / spring closed motorized intake damper controlled by the thermostat. The thermostat controls the amount of fresh air required each hour based on ASHRAE 62.2 - 2013 Ventilation and Indoor Air Quality Standard. The reference chart on the next page provides the ventilation timer setting based on using an 8” outside air damper ducted to the return air plenum on the HVAC system. A separate 24 volt transformer should be used to power the damper. 54 THERMOSTAT AUX AUX LINE 24V PO/SC DAMPER SEPARATE 24V TRANSFORMER

<500 501-1000 1001-1500 1501-2000 2001-2500 2501-3000 3001-3500 3501-4000 4001-4500 4501-5000 NUMBER OF BEDROOMS ONE TWO THREE FOUR FIVE VENTILATION TIMER SETTING (MINUTES PER HOUR) 8 10 12 15 16 12 15 16 19 21 16 19 21 23 25 21 23 25 27 29 25 27 29 31 33 29 31 33 35 37 33 35 37 39 41 37 39 41 43 45 41 43 45 47 49 45 47 49 51 53 55 The reference chart below provides the ventilation timer setting (Installer Option 27) based on using 8” rigid straight duct with friction loss of 0.1” w.g. per 100 ft. This chart can be used for most applications.

No LCD display If the thermostat is battery powered only, remove the battery compartment and check to see that the positive (+) and negative (-) ends of each battery are oriented properly. Also make sure that the thermostat is securely attached to the subbase with no exposed gaps. Thermostat can not Installer Option 03 needs to be set to 0 to provide Heat/Auto/Cool/Off be set for auto changeover operation or Heat/Auto/Cool/Emergency Heat/Off for heat pumps. 03 = 1 Manual Changeover (Heat/Cool/Off) 03 = 2 Heat Only (Heat/Off) 03 = 3 Cool Only (Cool/Off) Temperature display Air from wall cavity may be leaking into the rear of the thermostat. inaccurate Seal hole where wiring enters subbase to prevent air infiltration. External influence from appliances, lighting or drafts may be affecting temperature accuracy. Move lamps or other sources of heat away from thermostat. Thermostat not displaying Check wiring at outdoor sensor and sensor terminals on subbase. outdoor temperature Outdoor sensor wires to terminals S2 and SC.

Heat or Cool is flashing This is not a fault but indicates that the thermostat heating or cooling relay is energized. Depending upon the equipment configuration, Heat 2 or Cool 2 will also be displayed if a second stage is energized. Heat 3 is also displayed for heat pumps having three heating stages. Lock icon is displayed This is not a fault. The thermostat heating and cooling limits are when trying to set a higher preventing setting a temperature above or below the limit values. or lower temperature These values can be changes in the Installer Menu. 07 = Cooling Limit. Factory default is 50° F. Adjustable from 43° F to 122° F. 08 = Heating Limit. Factory default is 90° F. Adjustable from 41° F to 120° F. The fan continues to run The thermostat fan mode may be set to Always On. Touch the fan icon after a heating or cooling and change it to Automatic. When the thermostat is configured as a call is satisfied programmable thermostat, the fan operation can be programmed for Automatic or Always On with each event. If the Programmable Fan feature is not required, set Option 04 = 1. Some functions cannot be Lock values have been set. Refer to Installer Option menu 06. To changed and a padlock remove all lock values, set 06 = 0.

20-30 VAC 50/60 Hz Relay Rating 24 VAC @ 1 Amp maximum per relay Battery Power (2) AA 1.5 V Operating Temperature 32° F to 150° F Operating Relative Humidity 0-95% RH (non-condensing) Storage Temperature 32° F to 150° F Overall Size 5.5” W x 3.75” H x 1.312” D LCD Display Size 4.125” W x 2.375” H Back Light Blue LED Short-cycle Delay 4 minutes Displayed Temperature Resolution 1° F Setpoint Range Heating 41° F - 120° F Cooling 43° F - 122° F Heating and Cooling Limits Fully adjustable Onboard and Remote Sensors NTC type 2 Resistance 10KΩ @ 77 F ° Tolerance + / - 3% @ 77 F ° Warranty 5 years SC-06-1324-101320 www.specifiedcontrols.com 888.359.0365