Heatmiser DT-B Instruction Manual
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Heatmiser DT-B Instruction Manual

Heatmiser DT-B Instruction Manual

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Model: DT-B

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Summary of Contents for Heatmiser DT-B

  • Page 1 Model: DT-B...
  • Page 2 Model: DT-B Battery Series...

  • Page 3: Table Of Contents

    What is a Room Thermostat? Installation Procedure Installing the Batteries Replacing the Batteries LCD Display 11-12 Temperature Display Locking the Thermostat Temperature Control Power ON / OFF Frost Protection Optional Features 17-19 Re-calibrating the Thermostat Factory Reset Wiring Diagrams 21-22 Model: DT-B...

  • Page 4: What Is A Room Thermostat

    What is a Room Thermostat? Section Header A room thermostat simply switches the heating system on and off as necessary. It works by sensing the air temperature, switching on the heating when the air temperature falls below the thermostat setting, and switching it off once this set temperature has been reached.
  • Page 5 Room thermostats need a free flow of air to sense the temperature, so they must not be covered by curtains or blocked by furniture. Nearby electric fires, televisions, wall or table lamps may also prevent the thermostat from working properly. Model: DT-B...

  • Page 6: Installation Procedure

    Installation Procedure Section Header Mount the thermostat at eye level. Read the instructions fully so you get the best from our product. Don’t Do not install near to a direct heat source as this will affect functionality. Do not push hard on the LCD screen as this may cause irreparable damage. This wireless thermostat is designed to be surface mounted.
  • Page 7 Section Header Model: DT-B...

  • Page 8: Installing The Batteries

    Installing the Batteries Section Header 2x AAA batteries have been supplied with this thermostat. To access the battery holder, push and release the compartment door located on the bottom face of the thermostat. Battery Series...
  • Page 9 Section Header Insert the batteries in the empty battery holder, ensuring that each battery is orientated for the correct polarity + / - . Model: DT-B...
  • Page 10 Section Header Push the battery holder back inside the thermostat until it is secured in its closed position. Battery Series...

  • Page 11: Replacing The Batteries

    Batteries have a fixed lifespan and will need to be replaced occasionally to ensure the thermostat operates correctly. The thermostat will inform you when the batteries need to be replaced by displaying the battery icon on screen. Battery Icon (Flashes) Model: DT-B...
  • Page 12 Section Header Battery Series...

  • Page 13: Lcd Display

    Set - Displayed when the target temperature is adjusted. Current Temp - Indicates the current sensor temperature. Battery Level - Indicates when the batteries require replacement. Keypad Lock Indicator - Displayed when the keypad is locked. Units of Temperature - Degrees Celsius or Fahrenheit. Model: DT-B...

  • Page 14: Temperature Display

    Temperature Display Section Header The temperature display information is driven by two different inputs; the sensor measurement and the target temperature you have set. Room Temperature Set Temperature This is the current room temperature. This is the temperature you are trying to achieve in your home.

  • Page 15: Locking The Thermostat

    You will see the lock symbol appear on screen ..........• To unlock, repeat the steps above until the lock symbol disappears. Keypad Lock Indicator Note: The keypad lock indicator is only displayed when the lock is active. Model: DT-B...

  • Page 16: Temperature Control

    Temperature Control Section Header The Up/Down keys allow you to adjust the set temperature ....... When you press either of these keys, you will see the word SET and the desired temperature will be displayed on screen. Use the Up/Down keys to adjust the SET value ..........Press A to confirm settings and return to main display ..........
  • Page 17 (see page 17). Should the heating be turned on whilst in frost mode, the flame icon will be displayed. To cancel the frost protect mode, press the button once. Frost Protection Mode Enabled Model: DT-B...
  • Page 18 Optional Features Explained Section Header THE FOLLOWING SETTINGS ARE OPTIONAL AND IN MOST CASES NEED NOT BE ADJUSTED Feature 01 - Temperature Format: This function allows you to select between °C and °F. Feature 02 – Switching Differential: This function allows you to increase the switching differential of the thermostat.

  • Page 19: Adjusting The Optional Settings

    Use the Clock key to cycle through the features ............• Use the Up/Down keys to change the setting ........... • Press A to confirm settings ....................• Press the Power button once again to turn the thermostat back ON ....Model: DT-B...

  • Page 20: Frost Protection

    Optional Settings - Feature Table Section Header FEATURE DESCRIPTION SETTING Temperature Format 00 = °C 01 = °F (°C = Default) Switching Differential 01° - 03°C (01°C = Default) Frost Mode 00 = Enabled 01 = Disabled (00 = Default) Frost Protection Temperature 07°...

  • Page 21: Re-Calibrating The Thermostat

    All of the icons will be displayed on screen ............• When the icons have disappeared from the screen, the thermostat has been successfully reset. • Press the Power button once to turn the thermostat back ON ......Model: DT-B...

  • Page 22: Wiring Diagrams

    Wiring Diagram - DT-B Switched Live & Valve Systems Section Header DT-B NO C NC Permanent Live from boiler or Fused Spur Switched Live to boiler or valve Note: When connecting to a valve, the valve auxiliary switch is used to enable the boiler.

  • Page 23: Wiring Diagrams

    Wiring Diagram - DT-B Voltfree & Combi Boiler Systems Section Header DT-B NO C NC Please check boiler wiring diagram for final connections Boiler Connections Note: LS & LR may be labelled differently but they are normally the boiler’s room thermostat connections.
  • Page 24 Want More Information? Call our support team on: +44 (0)1254 669090 Or view technical specifications directly on our website: www.heatmiser.com Twitter: @heatmiseruk Facebook: facebook.com/thermostats Rev.1.2...

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