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Digital
Digital
Thermostat
Thermostat
Stages: 2-Heat, 1-Cool
Battery or System Powered
Auxiliary Heat Indicator
Back-Lit Digital Display
Fahrenheit or Celsius
Service Filter Indicator
Bi-Color LED
(when system powered)
Use with most 1 or 2 Stage Heat Pump Heat and 1 stage Heat Pump Cool units
INSTALLATION
INSTALLATION
INSTRUCTIONS
INSTRUCTIONS
Venstar Inc. 05/08
residential
THERMOSTAT
T1045
5+2 DAY
5+2 DAY
PROGRAMMABLE
PROGRAMMABLE
up to
up to
2-heat
2-heat
& 1-cool
& 1-cool
HEAT
HEAT
PUMP
PUMP
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Table of Contents
Troubleshooting
Related Manuals for Venstar T1045
Summary of Contents for Venstar T1045
- Page 1 Auxiliary Heat Indicator Back-Lit Digital Display Fahrenheit or Celsius Service Filter Indicator Bi-Color LED (when system powered) Use with most 1 or 2 Stage Heat Pump Heat and 1 stage Heat Pump Cool units INSTALLATION INSTALLATION INSTRUCTIONS INSTRUCTIONS Venstar Inc. 05/08...
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Page 2: Table Of Contents
INSTALLATION INSTRUCTIONS T1045 Contents Page # Safety Warnings Preparation Remove Old Thermostat Battery Replacement Wire Connections Test Operation Troubleshooting Warranty Page 2... -
Page 3: Safety Warnings
INSTALLATION INSTRUCTIONS T1045 Safety Warnings P/N T1045 Follow Installation Instructions carefully. CAUTION DISCONNECT POWER TO THE HEATER - AIR CONDITIONER BEFORE REMOVING THE OLD THERMOSTAT AND INSTALLING WARNING THE NEW THERMOSTAT. CAUTION The two Alkaline “AA” batteries must be replaced at least once every 12 months to ensure proper operation. -
Page 4: Preparation
INSTALLATION INSTRUCTIONS T1045 Preparation Proper installation of the thermostat will be I2:00 accomplished by following these step by step instructions. If you are unsure about any of these steps, call a qualified technician for assistance. These tools will be required:... -
Page 5: Remove Old Thermostat
INSTALLATION INSTRUCTIONS T1045 Remove & Replace Old Thermostat Remove the cover of the old thermostat. I2:00 If it does not come off easily check for screws. Loosen the screws holding the thermostat I2:00 base or subbase to the wall, and lift away. -
Page 6: Battery Replacement
INSTALLATION INSTRUCTIONS T1045 Battery Replacement Battery Replacement The batteries are easily accessible from the battery slot located on the front of the thermostat (fig. 1). To open the battery slot, press down on the battery cover (fig. 1) and pull out (fig. 2). -
Page 7: Wire Connections
INSTALLATION INSTRUCTIONS T1045 Wire Connections If the terminal designations on your old I2:00 thermostat do not match those on the new thermostat, refer to the chart below or the wiring diagrams that follow. Install on the Wire from the new thermostat... -
Page 8: Sample Wiring Diagrams
INSTALLATION INSTRUCTIONS T1045 Sample Wiring Diagrams 4 Wire, 1 Stage Cooling, 1 Stage Heat-Heat Pump with O reversing valve. Residential Heat Pumps, split systems & package units, with no auxiliary heat. Common wire optional O B G W Y R C... - Page 9 INSTALLATION INSTRUCTIONS T1045 Sample Wiring Diagrams 5 Wire, 1 Stage Cooling, 2 Stage Heat-Heat Pump with O reversing valve. Residential Heat Pumps, split systems & package units, with auxiliary heat. Common wire optional O B G W Y R C...
- Page 10 INSTALLATION INSTRUCTIONS T1045 Sample Wiring Diagrams 4 Wire, 1 Stage Cooling, 1 Stage Heat-Heat Pump with B reversing valve. Residential Heat Pumps, split systems & package units, with no auxiliary heat. Common wire optional O B G W Y R C...
- Page 11 INSTALLATION INSTRUCTIONS T1045 Sample Wiring Diagrams 5 Wire, 1 Stage Cooling, 2 Stage Heat-Heat Pump with B reversing valve. Residential Heat Pumps, split systems & package units, with auxiliary heat. Common wire optional O B G W Y R C...
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Page 12: Test Operation
INSTALLATION INSTRUCTIONS T1045 Test Operation Turn on the power to the Heat Pump. I2:00 On the thermostat, slide the Mode Switch I2:00 to HEAT. Press the COOLER or WARMER button until the set temperature is 10 degrees above room temperature. The HVAC unit should energize in the heating mode. - Page 13 INSTALLATION INSTRUCTIONS T1045 Test Operation On the thermostat, slide the Mode Switch I2:00 to COOL. Press the COOLER or WARMER buttons until the set temperature is 10 degrees below room temperature. The HVAC unit should energize in the cooling mode (Page 6 of the Owner’s Manual)
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Page 14: Troubleshooting
INSTALLATION INSTRUCTIONS T1045 Trouble Shooting SYMPTOM: The slide switches on the thermostat I2:00 are very difficult to move. CAUSE: The backplate of the thermostat is screwed too tightly into a wall that is not perfectly flat. REMEDY: Loosen the screws holding the thermostat into the wall. - Page 15 INSTALLATION INSTRUCTIONS T1045 Trouble Shooting SYMPTOM: Aux Heat does not turn on. I2:00 CAUSE: The Aux Heat Switch is set for Lockout. REMEDY: Consult the Aux Heat section of this manual to slide the Aux Heat Switch to Normal (Page 7 of the Owner’s Manual)
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Page 16: Warranty
INSTALLATION INSTRUCTIONS T1045 Warranty One-Year Warranty - This Product is warranted to be free from defects in material and workmanship. If it appears within one year from the date of original installation, whether or not actual use begins on that date, that the product does not meet this warranty, a new or remanufactured part, at the manufacturer’s sole option to replace any defective part, will be...
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