Venstar T2900 Owner's Manual

Venstar Inc. 08/07Meets Commercial California Title 24Use with most Air Conditioning & Heating Systems including: 1 or 2 Stage E

HUMIDIFICATION OPERATION - SECTION 9 of the Owner’s ManualIf your HVAC unit is equipped with a humidification system and the Humidity Module (sold sep

ECON JUMPER SETTINGIf the jumper for MISC2 and MISC3 is set to ECON, MISC screw terminal on the backplate will be connected to an economizer.the corr

Page 4.1SECTION 4Wire Connections4If the terminal designations on your old thermostat do not match those on the new thermostat, refer to the chart be

Page 5.1Section 5 Contents: HVAC Equipment Wiring...5.2 MISC1, MISC2, and MISC3 Wiring...5.6 Remo

Y1GRCMISC2CK1CKGNDW1/O/BMISC1RS+5RS1RSGNDW26 Conductor 18 gauge unshielded cable from the thermostat to the equipment.24 vac return Fan relayCompresso

Y1GRCMISC2CK1CKGNDW1/O/BMISC1RS+5RS1RSGNDW26 Conductor 18 gauge unshielded cable from the thermostat to the equipment.24 vac return Fan relayCompresso

Y1GRCMISC2CK1CKGNDW1/O/BMISC1RS+5RS1RSGNDW26 Conductor 18 gauge unshielded cable from the thermostat to the equipment.24 vac return Fan RelayCompresso

Y1GRCMISC2CK1CKGNDW1/O/BMISC1RS+5RS1RSGNDW26 Conductor 18 gauge unshielded cable from the thermostat to the equipment.24 vac return W2 GR CY1RS2Reside

Y1GRCMISC2CK1CKGNDW1/O/BMISC1RS+5RS1RSGNDW22nd Stage CoolingY2W3RS2Adding a (MISC1), Exterior Lighting System (MISC2), and 3rd Stage of Heating (MI

CK1CKGNDHPGASBOELECGAS(FAN)W1Y1GRCMISC2W2MISC1RS2MISC3RSGNDRS+5INSTALL HUMIDITY MODULE WITH SENSINGELEMENT OUTWARDHUMNO HUMECONW3PROGHUMDEHUM MISC3 MI

Page iNOTE: Due to variations in environmental conditions, it is not always possible to achieve the desired humidification or dehumidification setpoi

DRY CONTACT SWITCH - The terminals are ‘normally open’ (may be programmed for normally closed operation, see page 16.2 of the Owner’s Manual).

Press the MODE button repeatedly until the HEAT icon appears on the display. Press UP or DOWN buttons until the set temperature is 10 degrees above r

Page 7.1SECTION 7Calibrating the Thermostat Sensors7After calibration is complete, press the MODE button twice to return to normal operation.AUTOOFFON

Page 8.1SECTION 8TroubleShooting8SYMPTOM: The air conditioning does not attempt to turn on.CAUSE: The compressor timer lockout may prevent t

SYMPTOM: When controlling a residential heat pump, and asking for cooling, the heat comes on.CAUSE: The thermostat reversing valve jumper is

82136745PreparationRemove & Replace the Old ThermostatConfiguring the MISCOutputsSample Wiring DiagramsCalibrating the Thermostat SensorsTest Ope

Page 1.1SECTION 1Preparation1Assemble tools Flat BladeScrewdriverWire cutter& StripperMake sure your Heater/Air Conditioner is working properly be

Page 2.1SECTION 2Remove & Replace the Old Thermostat2Remove the cover of the old thermostat.If it does not come off easily check for screws.Loosen

3Page 3.1Section 3 Contents: Configuring the Jumpers...3.2 Explanation of Jumper Settings...3.3 SECTION 3Co

3Configuring the JumpersECONPage 3.2For additional flexibility, your thermostat has three configurable outputs. These outputs are designed to have di

PROG JUMPER SETTINGIf the jumper for MISC1, MISC2, or MISC3 is set to PROG, terminal on the backplate will control a pilot relay or other accessory.th