Venstar T1035 Owner's Manual

Use with most Air Conditioning & Heating Systems including: 1 Stage Electric Cooling & 1 Stage Gas Heating, Heat Pump, Electric or H

Sample Wiring DiagramsGas or Electric HeatPage 104 Wire, 1 Stage Cooling, 1 Stage Heating-Heat Pump with B reversing valve.Residential Heat Pumps, spl

Sample Wiring DiagramsGas or Electric HeatPage 113 Wire, 1 Stage HeatingResidential Gas or Electric Heat units with a separately controlled fan.For ju

Sample Wiring DiagramsGas or Electric HeatPage 122 Wire, 1 Stage Gas HeatResidential Gas or Millivolt units.For jumper configuration see page 14.Commo

Page 13Sample Wiring DiagramsGas or Electric HeatDual Transformer 5 Wire, 1 Stage Cooling, 1 Stage HeatingResidential Gas or Electric Heat, Electric C

Page 14Jumper Configuration*Output active depending on O/B jumper configuration - For normal operation do not connect to equipment.OUTPUTSNo Demand

Page 15Jumper ConfigurationOUTPUTSNo Demand With DemandCooling ModeHeating ModeO/B*Y, G, O/B*O/B* W, G, O/B**Output active depending on O/B jumper con

Jumper ConfigurationCooling and Heating - Heat Pump with O reversing valve.Residential Heat Pumps, split systems & package units, with no auxiliar

Jumper ConfigurationCooling and Heating - Heat Pump with B reversing valve.Residential Heat Pumps, split systems & package units, with no auxiliar

Test OperationOn the thermostat, slide the Mode Switch to HEAT. Press the COOLER or WARMERbutton until the set temperature is 10 degreesabove room te

Page 19Trouble ShootingSYMPTOM: The slide switches on the thermostat are very difficult to move.CAUSE: The backplate of the thermostat is

Page 2ContentsPage #Remove Old ThermostatSafety WarningsPreparationBattery ReplacementWarrantyTest OperationTroubleshootingWire ConnectionsJumper Conf

Page 20Trouble ShootingSYMPTOM: The Heating does not attempt to turn on.CAUSE: The heating setpoint is set too high, the Mode Switch

Page 21WarrantyOne-Year Warranty - This Product is warranted to be free from defects in material and workmanship. If it appears within

CAUTIONFollow Installation Instructions carefully.DISCONNECT POWER TO THE HEATER - AIR CONDITIONER BEFORE REMOVINGTHE OLD THERMOSTAT AND INSTALLINGTHE

Page 4These tools will be required: Flat BladeScrewdriverWire cutter& StripperMake sure your Heater/Air Conditioneris working properly before begi

Remove the cover of the old thermostat.If it does not come off easily check forscrews.Loosen the screws holding the thermostatbase or subbase to the w

SuPMI2:00:Page 6INSTALLATION INSTRUCTIONS T1035The batteries must be replaced immediately when the thermostatdisplays the low battery ico

Page 7INSTALLATION INSTRUCTIONS T1035SuPMI2:00:Wire ConnectionsIf the terminal designations on your oldthermostat do not match those on t

Page 8Sample Wiring DiagramsGas or Electric HeatCommon wire is optional in all installations. If a common wire is not used thethermostat must be powe

Page 9Sample Wiring DiagramsGas or Electric Heat4 Wire, 1 Stage Cooling, 1 Stage Heating-Heat Pump with O reversing valve.Residential Heat Pumps, spli