AMBIENTE PRT-E 43500 (01) PDF Document

A programmable room thermostat like the AMBIENTE PRT-E 43500 is both a programmer and a room thermostat. A programmer allows you to set “On” and “Off” periods to suit your lifestyle. A room thermostat works by sensing the air temperature, switching on the heating when the air temperature falls below the thermostat setting, and switching it off once the set temperature has been reached.

This allows you to choose what times you want the heating to be on and what temperature it should reach while it is on. You can select different temperatures for your home at different times of the day (and days of the week) to meet your particular needs and preferences.

Setting a programmable room thermostat to a higher temperature will not make the room heat up any faster. How quickly the room heats up depends on the design and size of the heating system. Similarly, reducing the temperature setting does not affect how quickly the room cools down. Setting the thermostat to a lower temperature will result in the room being controlled at a lower temperature and saves energy.

The best way to set and use your AMBIENTE PRT-E 43500 is to find the lowest temperature settings that you are comfortable with for the different times you have chosen, and then leave it alone to do its job. To do this, set the thermostat to a low temperature, for example 18°C, and then turn it up by 1°C each day until you are comfortable. You won’t have to adjust the thermostat further. Any adjustment above this setting will waste energy and cost more money.

Programmable 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.

This thermostat is designed to be flush mounted and requires a back box of 35mm (minimum depth) to be sunk into the wall prior to installation.

Do:

Mount the thermostat at eye level.

Read the instructions fully to get the best from the product.

Don’t:

Do not install near a direct heat source as this will affect functionality.

Do not push hard on the LCD screen as this may cause irreparable damage.

Installation Steps:

Step 1: Carefully separate the front half of the thermostat from the back plate by placing a small flat head terminal driver into the slots on the bottom face of the thermostat.

Step 2: Place the thermostat front somewhere safe. Terminate the thermostat as shown in the wiring diagrams.

Step 3: Screw the thermostat back plate securely into the back box.

Step 4: Clip the front of the thermostat back onto the thermostat back plate.

1. Room/Floor Temp: Indicates the current temperature sensor mode.

2. Day Indicator: Displays the current day (Sun, Mon, Tue, Wed, Thu, Fri, Sat).

3. Frost Icon: Displayed when the thermostat is in frost protection mode.

4. Flame Icon: Displayed when the thermostat is calling for heat. The flame icon will flash when the optimum start function is in operation.

5. Floor Temp Limit Icon: Displayed when the floor sensor probe has reached the temperature limit set on feature 09.

6. Temperature Hold: When a Temp Hold is active, HOLD FOR and the remaining time period is displayed.

7. Set: Indicates when changes are being made to programs or temperature set points.

8. Holiday Indicator (Suitcase Icon): Displayed when the thermostat is in holiday mode.

9. Current Temp: Indicates the current sensor temperature.

10. Program Cycle Indicator (WAKE, LEAVE, RETURN, SLEEP): Displayed during programming only to show which period is being altered.

11. Keypad Lock Indicator (Lock Icon): Displayed when the keypad is locked.

12. Units of Temperature: Degrees Celsius (°C) or Fahrenheit (°F).

13. Clock: Digital clock display in 24h format.

The AMBIENTE PRT-E 43500 thermostat has 4 main operating modes:

Mode 00: Non-programmable with air sensor only.

Mode 01: Non-programmable with floor / air sensor options.

Mode 02: Programmable with air sensor only.

Mode 03: Programmable with floor / air sensor options (default).

Important: Mode 00 or 02 MUST NOT be used to control electric underfloor heating. Mode 01 or 03 (default) with floor sensor option must be used.

To select the mode that best suits your needs:

1. Press and hold the Power button to turn the thermostat OFF.

2. Press and hold the H key for 10 seconds.

3. Use the Up/Down keys to select the mode you require.

4. Press A to confirm settings.

5. Press the Power button once to turn the thermostat back ON.

To set the clock, follow these steps:

1. With the thermostat turned ON, press the Clock key twice.

2. Use the Up/Down keys to set the hours.

3. Press H to confirm settings.

4. Use the Up/Down keys to set the minutes.

5. Press H to confirm settings.

6. Use the Up/Down keys to set the day of the week.

7. Press A to confirm settings and return to the main display.

The AMBIENTE PRT-E 43500 can be set up to use an air sensor, floor sensor, or both. The display will clearly show which sensor is being controlled by showing either “ROOM TEMP” or “FLOOR TEMP”.

When the thermostat is set to use both sensors, the room temperature will be displayed by default. To view the floor temperature, press and hold the A key until “FLOOR TEMP” is displayed on the screen.

Note: The built-in air sensor only MUST NOT be used to control electric underfloor heating. The floor sensor only or the built-in air & floor sensor together must be used.

The thermostat offers Weekday/Weekend or 7 Day Programming options. The default times and temperatures are:

08:00 – 21°C (Wake)

09:30 – 16°C (Leave)

16:30 – 22°C (Return)

23:00 – 17°C (Sleep)

If you only want to use 2 levels, you should program the unused levels to –:–.

To program comfort levels:

1. Press the Clock key once.

2. Use the Up/Down keys to enter the required WAKE time.

3. Press H to confirm settings.

4. Use the Up/Down keys to enter the required WAKE temperature.

5. Press H to confirm settings.

6. You will now see “LEAVE” displayed on the screen. Repeat the programming steps for each period (LEAVE, RETURN, SLEEP) until complete.

7. For unused periods, enter –:– and the thermostat will ignore the setting.

8. Press A to confirm settings and return to the main display.

Note: In 7 Day programming mode, you can repeat for each day independently. In Weekday/Weekend programming mode, you will see Sat Sun displayed on screen and can repeat for the weekends.

To activate the keypad lock facility, follow these steps:

1. Press and hold the A and Down keys together for 10 seconds.

2. You will see the lock symbol appear on the screen.

To unlock, repeat the steps above until the lock symbol disappears. The keypad lock indicator is only displayed when the lock is active.

1. The Up/Down keys allow you to adjust the set temperature. When you press either key, you will see the word SET and the desired temperature will be displayed on the screen.

2. Use the Up/Down keys to adjust the SET value.

3. Press A to confirm settings and return to the main display.

Note: This override will be maintained until the next programmed comfort level.

The temperature hold function allows you to manually override the current operating program and set a different temperature for a desired period.

1. Press H to commence temperature hold.

2. Use the Up/Down keys to enter the required Hold time.

3. Press H to confirm settings.

4. Use the Up/Down keys to enter the required Hold temperature.

5. Press A to confirm settings and return to the main display.

You will see the HOLD FOR indication displayed on the screen. The time will countdown the set duration and then revert to the normal program. To cancel the temperature hold, follow the same steps but reduce the hold time to 00:00 hours.

The holiday function reduces the set temperature in your home to the frost protection temperature setting. The thermostat will maintain this temperature for the duration of the holiday and will then automatically return to the program schedule on your return.

1. Press H three times (until you see the suitcase icon on screen).

2. Use the Up/Down keys to enter the number of days for the holiday.

3. Press A to confirm settings and return to the main display.

The display will show a suitcase indicating the thermostat is in holiday mode.

Note: A holiday period does not start until 00:00 the next day. For example, if you set a holiday period on Friday for 2 days, Saturday will be counted as the first day and the thermostat will revert back to the programmed schedule at 00:00 on Monday.

To cancel, follow the same steps but reduce the holiday duration to 00 days.

Pressing the Power button once will place the thermostat in frost protect mode. In this mode, the thermostat will display the frost icon and will only turn the heating on should the room temperature drop below the set frost temperature. Should the heating be turned on whilst in frost protect mode, the flame icon will be displayed.

To cancel the frost protect mode, press the Power button once again.

The heating is indicated ON when the flame icon is displayed. When the flame icon is absent, there is no requirement for heating to achieve the set temperature but the thermostat remains active.

To turn the thermostat OFF completely, press and hold the Power button. The display and heating output will be turned OFF completely.

To turn the thermostat back ON, press the Power button once again.

Feature 01 – Temperature Format: Select between °C and °F.

Feature 02 – Switching Differential: Adjusts the temperature swing for switching the heating on/off. Default is 1°C.

Feature 03 – Frost Protect: Set whether the thermostat will maintain the frost temperature when the display is turned off (enabled by default).

Feature 04 – Frost Protect Temperature: Set the temperature for frost protect mode (range 07 – 17°C, default 12°C).

Feature 05 – Output Delay: Set a delay (0-15 minutes) to prevent rapid switching.

Feature 06 – Communication Address: Set a unique address (01-32) when connected to a network system.

Feature 07 – Temperature Up/Down Limit: Limits the adjustment range of the up/down keys.

Feature 08 – Sensor Selection: Select between air temperature only, floor temperature, or both. When using both, the floor sensor acts as a limiting sensor.

Feature 09 – Floor Temp Limit: Set a floor limiting temperature between 20-45°C (default 28°C).

Feature 10 – Optimum Start: Delays the heating start-up to the latest possible moment to be warm at the programmed time.

Feature 11 – Rate of Change: Number of minutes to raise the temperature by 1°C, used by Optimum Start.

Feature 12 – Weekday/Weekend or 7 Day Programming: Choose between two programming methods.

To adjust the optional settings, follow these steps:

1. Press and hold the Power button to turn the thermostat OFF.

2. Press and hold the Clock key until the feature number and setting value appear on the display.

3. Use the Clock key to cycle through the features (01-12).

4. Use the Up/Down keys to change the setting for the selected feature.

5. Press A to confirm settings.

6. Press the Power button once again to turn the thermostat back ON.

If your thermostat displays an error code, it indicates the following:

E0: The internal sensor has developed a fault. You should contact your thermostat retailer for assistance.

E1: The remote floor probe has not been connected, has been wired incorrectly, or the probe is faulty.

E2: The remote air probe has not been connected, has been wired incorrectly, or the probe is faulty.

If you need to re-calibrate the thermostat, follow these steps:

1. Press and hold the Power button to turn the thermostat OFF.

2. Press and hold BOTH the Power and Down keys together until the temperature appears on the screen.

3. Use the Up/Down keys to configure the new temperature.

4. Press A to confirm settings.

5. Press the Power button once to turn the thermostat back ON.

The thermostat has a reset function to restore all settings to their factory defaults. To perform a factory reset, follow these steps:

1. Press and hold the Power button to turn the thermostat OFF.

2. Press and hold the Power and Up keys together until the LCD powers up. All of the icons will be displayed on screen.

3. When the icons have disappeared from the screen, the thermostat has been successfully reset.

4. Press the Power button once to turn the thermostat back ON.