Venstar Slimline Residential Phone Controllable Thermostat (T1700) Installation Manual
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residential THERMOSTAT Digital Thermostat T1700 1-DAY PROGRAMMABLE up to 2-heat & 1-cool HEAT COOL CONFIGURABLE IN SETUP: Auto or Manual changeover Programmable or Non-Programmable HEAT PUMP Control up to 2 Heat & 1 Cool Stages Backlit Display & Button Legends Aux Heat Indicator Outdoor Sensor Ready Accepts EZ Programmer Accepts Optional IR Remote Control Accepts Comfort Call Phone Control Accessory Use with most Air Conditioning & Heating Systems including: 1 or 2 Stage Electric Cooling & 3 Stage Gas Heating, Heat Pump, Electric or Hydronic Heat. INSTALLATION INSTRUCTIONS Venstar Inc. 08/07 CAUTION Follow the Installation Instructions before proceeding. Set the thermostat mode to “OFF” prior to changing settings in setup or restoring Factory Defaults. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Thermostat T1700 c FC Tested to Comply with FCC Standards 4Z95 FOR HOME OR OFFICE USE Page i Table of Contents Preparation Remove & Replace the Old Thermostat Wire Connections Sample Wiring Diagrams Test Operation Calibrating the Thermostat Sensors TroubleShooting Page iii 1 2 3 4 5 6 7 SECTION 1 Preparation 1 I2:00 Pm 74 COOL AUTO 72 HEAT Proper installation of the thermostat will be accomplished by following these step by step instructions. If you are unsure about any of these steps, call a qualified technician for assistance. Assemble tools I2:00 Pm 74 COOL AUTO 72 HEAT Flat Blade Screwdriver I2:00 Pm 74 COOL AUTO 72 HEAT I2:00 Pm 74 COOL AUTO 72 HEAT I2:00 Pm 74 COOL AUTO 72 HEAT Wire cutter & Stripper Make sure your Heater/Air Conditioner is working properly before beginning installation of the thermostat. Carefully unpack the thermostat. Save the screws, bracket, and instructions. Turn off the power to the Heating/Air Conditioning system at the main fuse panel. Most residential systems have a separate breaker for disconnecting power to the furnace. Page 1.1 SECTION 2 Remove & Replace the Old Thermostat I2:00 Pm 74 COOL AUTO 72 HEAT I2:00 Pm 74 COOL AUTO 72 HEAT I2:00 Pm 74 COOL AUTO 72 HEAT I2:00 Pm 74 COOL AUTO 72 HEAT Remove the cover of the old thermostat. If it does not come off easily check for screws. 2 Loosen the screws holding the thermostat base or subbase to the wall, and lift away. Disconnect the wires from the old thermostat. Tape the ends of the wires as you disconnect them, and mark them with the letter of the terminal for easy reconnection to the new thermostat. Keep the old thermostat for reference purposes, until your new thermostat is functioning properly. Page 2.1 SECTION 3 Wire Connections I2:00 Pm If the terminal designations on your old thermostat do not match those on the new thermostat, refer to the chart below, or the wiring diagrams that follow. 74 COOL AUTO 72 HEAT 3 Wire from the old thermostat terminal marked Function Install on the new thermostat connector marked G or F Fan G Y1, Y or C Cooling Y1 W1, W or H Heating W1/O/B Rh, R, M, Vr, A Power R C Common C Rev. Valve W1/O/B* O/B W2 RS+5 2nd Stage Heat W2 Remote Sensor +5vdc RS+5 RSGND Remote Sensor Ground RSGND RS2 Remote Sensor Signal #2 RS2 * O/B is used if your system is a Heat Pump. Page 3.1 SECTION 4 Sample Wiring Diagrams Section 4 Contents: 4 HVAC Equipment Wiring............4.2 Installing the Outdoor Sensor....4.6 Page 4.1 6 Wire, 1 Stage Cooling, 1 Stage Heat Residential & Commercial 1 Stage Cooling, with 1st stage Gas Heat OR Commercial Heat Pump 1 Stage Cooling with 2 Stage Heat 4 W2 W1/O/B Y1 G RS2 RS+5 R C RSGND GAS (FAN) ELEC HP ELEC GAS (FAN) GAS HP GAS B O W1 B 6 Conductor 18 gauge unshielded cable from the thermostat to the equipment. W2 Y1 G RS2 O RS+5 R RSGND 24 vac return R fan relay G compressor relay W2 W1 Y1 24 vac common C C 1st stage heat circuit 2nd stage heat circuit Page 4.2 6 Wire, 1 Stage Cooling, 1 Stage Heat Residential & Commercial 1 Stage Cooling, with 1st stage Electric Heat 4 W2 W1/O/B Y1 G RS2 RS+5 R C RSGND GAS (FAN) ELEC HP ELEC GAS (FAN) GAS HP GAS B O W1 Y1 B G O 6 Conductor 18 gauge unshielded cable from the thermostat to the equipment. W2 RS2 RS+5 R 24 vac return R fan relay G compressor relay W2 W1 Y1 24 vac common C C 1st stage heat circuit 2nd stage heat circuit RSGND Page 4.3 6 Wire, 1 Stage Cooling, 2 Stage Heat Residential Heat Pump with O Reversing Valve 1 Stage Cooling, with 2 stage Heat 4 W2 W1/O/B Y1 G RS2 RS+5 R C RSGND GAS (FAN) ELEC HP ELEC GAS (FAN) GAS HP GAS B O W1 B 6 Conductor 18 gauge unshielded cable from the thermostat to the equipment. W2 Y1 G RS2 O RS+5 R RSGND R Fan Relay Reversing Valve O 2nd stage heat circuit W2 Compressor Relay Y1 24 vac return G 24 vac common C C Page 4.4 6 Wire, 1 Stage Cooling, 2 Stage Heat Residential Heat Pump with b Reversing Valve 1 Stage Cooling, with 2 stage Heat 4 W2 W1/O/B Y1 G RS2 RS+5 R C RSGND GAS (FAN) ELEC HP ELEC GAS (FAN) GAS HP GAS B O W1 Y1 B G O 6 Conductor 18 gauge unshielded cable from the thermostat to the equipment. W2 RS2 RS+5 R R Fan Relay Reversing Valve b 2nd stage heat circuit W2 Compressor Relay Y1 24 vac return G 24 vac common C C RSGND Page 4.5 Installing the Outdoor Sensor The Outdoor Sensor measures outdoor air temperature and sends this information to the thermostat; it measures temperature with a range of -40 to 127 F. 4 The Outdoor Sensor should be connected to the thermostat using solid conductor CAT 5, CAT 5e, or CAT 6 type network communication cable. This is an unshielded cable with four twisted pairs of 24 gauge solid wire; DO NOT use stranded cable. The cable length should not exceed 250 feet. If less than 75 feet of cable is required to connect the thermostat to the Remote Sensor, a three conductor thermostat cable (18-24 gauge) may be used; this cable is NOT suitable for any length greater than 75 feet. IMPORTANT: Do no use shielded wire. Do not run sensor wiring in the same conduit as the 24VAC thermostat wiring. Electrical interference may cause the sensor to give incorrect temperature readings. See the Outdoor Sensor accessory for further details. Page 4.6 SECTION 5 Test Operation I2:00 Pm 74 COOL AUTO 72 HEAT I2:00 Pm 74 COOL AUTO 72 HEAT I2:00 Pm 74 COOL AUTO 72 HEAT I2:00 Pm 74 COOL AUTO 72 HEAT Turn the power on to the Heating/Air Conditioning system. 5 Press the MODE button repeatedly until the HEAT icon appears on the display. Press the Up or Down buttons until the set temperature is 10 degrees above room temperature. The furnace should turn on. Press the MODE button repeatedly until the COOL icon appears on the display. Press the Up or Down buttons until the set temperature is 10 degrees below room temperature. The air conditioner should turn on. NOTE: Most equipment has a time delay of 5 minutes between cool cycles. This feature is defeatable on the thermostat. Consult the Owner's Manual under Setup, cycles per hour. Press the UP button until the setpoint is equal to the room temperature. Press the FAN button to Fan On. The fan should turn on and run continuously. Page 5.1 SECTION 6 Calibrating the Thermostat Sensors Under normal circumstances it will not be necessary to adjust the calibration of the temperature and humidity sensors. If calibration is required, please contact a trained HVAC technician to correctly perform the following procedure. 6 I2:00 Su MODE MODE FAN Place the thermostat in the OFF mode. Press and hold the MODE button. While holding the MODE button, press and hold the FAN button for 5 seconds. All icons will appear on the display. 72 88 I88 88 Pm OFF I8:88 Am Program On Setup Pm StartStop Service Filter AUTO OFFON Morning DayNight Evening FanOn COOL Outside AUXHEAT PRESS THERMOSTAT SENSOR Press the UP and DOWN buttons at the same time twice. The thermostat temperature will be displayed and may be calibrated using the UP or DOWN buttons. TWICE After calibration is complete, press the MODE button once to return to normal operation. Page 6.1 CALIBRATE SECTION 7 TroubleShooting I2:00 Pm 74 COOL AUTO 72 HEAT SYMPTOM: The air conditioning does not attempt to turn on. CAUSE: The compressor timer lockout may prevent the air conditioner from turning on, for a period of time. REMEDY: Consult the Owner's Manual in the Setup section to defeat the cycles per hour and compressor timeguard. 7 I2:00 Pm 74 COOL AUTO 72 HEAT I2:00 Pm 74 COOL AUTO 72 HEAT I2:00 Pm 74 COOL AUTO 72 HEAT SYMPTOM: The display is blank. CAUSE: Lack of proper power. REMEDY: Make sure power is turned on to the furnace and that you have 24vac between R & W. If C is used, 24vac between R & C. SYMPTOM: The air conditioning does not attempt to turn on. CAUSE: The cooling setpoint is set too high. REMEDY: Consult the Owner's Manual in the Setup section to lower the cooling setpoint limit. SYMPTOM: The heating does not attempt to turn on. CAUSE: The heating setpoint is set too low. REMEDY: Consult the Owner's Manual in the Setup section to raise the heating setpoint limit. Page 7.1 TroubleShooting I2:00 Pm 74 COOL AUTO 72 HEAT SYMPTOM: When controlling a residential heat pump, and asking for cooling, the heat comes on. CAUSE: The thermostat reversing valve jumper is set for “b”. REMEDY: Set the reversing valve jumper for “O”. See pages 5.4 and 5.5. 7 I2:00 Pm 74 COOL AUTO 72 HEAT SYMPTOM: When calling for cooling, both the heat and cool come on. CAUSE: The thermostat equipment jumper is configured for “HP” and the HVAC unit is a Gas/Electric. REMEDY: Set the equipment jumper for “Gas”. See pages 5.2 and 5.3. Page 7.2 P/N 88-596 Rev. 1
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