ALM CONTROL EL05 UNDERFLOOR HEATING DIGITAL THERMOSTAT User Manuals

The device has a clear and large LCD display with white backlight. Already during the design, great importance was attached to intuitive operation via touch control. The display is clearly arranged and the measured room temperature as well as the set point can be determined at a glance. The display shows the minutes, the hours and the respective day of the week. There are 7 standalone daily programs that you can set.

The Digital Thermostat has a display accuracy of 0.1 degrees Celsius. If a power failure no longer supplies your household with energy, all your data remains stored thanks to the backup battery. The thermostat can be used with protection class IP20 in different rooms of a house or apartment. The room thermostat display is divided into 4 main areas:

1. In the header area, time and date information including the key lock are displayed. The day of the week and daylight saving time are automatically calculated based on the set date. The automatic summer/winter time changeover can be activated or deactivated accordingly under Settings.
2. In the second area, the daily program with the temperature setpoint is displayed. The daily program is divided into 24 segments, representing the 24 hours of a day. In total, the 7 working days form the entire weekly program. A distinction is made between a comfort temperature (for presence) and an ECO temperature (for absence). The comfort temperature can be set differently for each day of the week, while the ECO temperature is valid for all days of the week and can be changed under advanced settings. The Digital Thermostat is delivered by the factory with the following weekly program.
3. Below the daily program, the measured room temperature is displayed. In the right area, the Digital Thermostat displays the current status symbols. The layout of the display thus enables an immediate reading of all relevant information.
4. The control buttons for controlling the room controller are shown in the foot area. There are a total of 5 buttons available that can be used to quickly make changes to the digital thermostat.

Wiring Diagram

Digital Thermostat Features

Backlight

During operation, the backlight is activated with 100% luminosity. If no further button action takes place after 2 minutes, the lighting is turned down. The strength of the dimm level can be adjusted in the settings depending on the requirement between 0% and 40%. The backlight can also be switched off completely within a certain time window, e.g. in order not to cause any light sources at sleep time in the bedroom.

Mode Selection

The room controller supports both heating and cooling modes. For cooling mode, the cooling function on your heat pump must also be activated. The effect of the switching contact is then reversed to the heating mode.

Sensor selection

The room controller has a total of 3 different options, which sensors should play a role in a control.

1. Internal sensor – possible location: water-bearing underfloor heating with actuator
   The room temperature is recorded via the internally installed sensor. The external sensor is not needed and does not need to be connected.

2. External sensor – possible location Example: water-bearing underfloor heating with actuator
   The room temperature is recorded via the external sensor. Depending on the requirements, the temperature can be recorded at a different location than the intended installation location of the room controller

3. Internal and external sensor – possible location Example: Electric heating
   The room temperature is recorded via the internally installed sensor. The external sensor must be positioned in the floor area when using electric heating mats. The external sensor acts as a heating limiter and ensures that the heating is switched off above a certain floor temperature to prevent floor overheating and combustion. It is imperative that the heating mats used include internal overheating protection.

Keylock

Unwanted changes to the settings by kids or outsiders can be prevented with the key lock. The On/Off button needs to be held down for at least three seconds in order to engage the key lock. The appropriate symbol in the display or the flashing symbol in the event that someone tries to press any key serve as indicators of an active key lock.

Adjusting the differential and calibrating the sensor

The deviation value from which the switching contact should be closed or opened can be determined using the switching difference. This can be used to quantify the heating system’s hysteresis’s size. The switching difference is doubled in value, which causes the hysteresis. The measured temperature value can be adjusted with the help of the sensor calibration. After 24 hours of continuous operation, a calibration should be performed as soon as possible to obtain final readings.

Control mode

There are two control options available for the room exciter:

Two-point controller (ideal for underfloor heating systems containing water)
A two-point controller regulates in accordance with the defined switching difference and is a proportional controller. The switching contact closes in the heating mode if the ambient temperature is lower than the setpoint and the switching difference. The switching contact opens in heating mode if the interior temperature is higher than the setpoint plus the switching difference. As a result, it is controlled by a hysteresis made up of a twofold switching difference. In heating mode, the active symbol “HEAT” denotes a closed switching contact. Similar to inverting, the phenomenon occurs in cooling mode.

Proportional-integral controller (PI controller)
Two components, a P-part and an I-part, make up a PI controller. The P-component, which acts proportionally, is comparable to the two-point controller previously mentioned. On the other hand, the I component depends on the length of the temporal deviation and does not have a defined relationship between the setpoint and the temperature variation. Based on the PI algorithm, the room controller strives to reach the chosen setpoint as efficiently as possible. The PI parameters can be modified in accordance with the settings’ requirements

Highlights

• a sizable LCD screen with touch buttons and a white backlight
• Displaying the setpoint temperature and the actual room temperature clearly
• Time (minutes, hours, day of the week) display
• Weekly schedule with 7 separate daytime shows
• Adjustable temperature measurement using an internal or external sensor
• In the daily program, the terms “comfort” and “ECO temperature” are defined.
• Data storage via a backup battery in the case of a power outage
• Heating and cooling, differential switching, calibration, frost protection, turning off the display at night, and many other features.

Delivery’s range

• White EL05 digital thermostat for electric and water-bearing underfloor heating
• exterior floor sensor (to be omitted with actuators or solely attached to electric heaters) 5mm x 26mm, 3m of wire, NTC 10K25
• German instruction manual (see TAB Download

FAQS

Q1: What is the ALM Control EL05 Underfloor Heating Digital Thermostat?
A1: The ALM Control EL05 Underfloor Heating Digital Thermostat is an advanced device designed to regulate and optimize underfloor heating systems, providing accurate temperature control and energy efficiency.

Q2: How does the EL05 thermostat differ from traditional thermostats?
A2: The EL05 features a digital interface that offers precise temperature adjustments and programmable scheduling, tailored specifically for underfloor heating systems.

Q3: What type of heating systems is the EL05 designed for?
A3: The EL05 is designed specifically for underfloor heating systems, ensuring even and comfortable heating across the entire floor area.

Q4: Can the EL05 thermostat set specific temperature levels?
A4: Yes, users can set specific temperature levels using the EL05 thermostat, ensuring consistent comfort in the living space.

Q5: Does the EL05 offer programmable scheduling?
A5: Yes, the EL05 provides programmable scheduling options, allowing users to create heating schedules that match their daily routines and conserve energy.

Q6: How does the EL05 contribute to energy efficiency?
A6: By enabling users to program heating schedules, the EL05 helps prevent unnecessary heating when rooms are unoccupied, leading to energy savings.

Q7: What type of interface does the EL05 feature?
A7: The EL05 comes with a digital interface, providing an intuitive and user-friendly way to adjust temperature settings and configure schedules.

Q8: Can the EL05 display the current temperature?
A8: Yes, the EL05 thermostat typically displays the current temperature, giving users real-time feedback on the indoor climate.

Q9: Is the installation of the EL05 thermostat complicated?
A9: The installation process can vary based on the specific underfloor heating system and manufacturer guidelines, but the EL05 is generally designed for relatively straightforward installation.

Q10: Can the EL05 be used in both residential and commercial spaces?
A10: Yes, the EL05 is suitable for both residential and commercial spaces that utilize underfloor heating systems.

Q11: What benefits does underfloor heating provide?
A11: Underfloor heating offers even and efficient heating throughout a room, eliminating cold spots and maximizing comfort.

Q12: How does the EL05 improve temperature control compared to traditional methods?
A12: The EL05’s digital interface allows users to set precise temperature levels, providing more accurate control over the indoor climate.

Q13: Can users adjust the heating schedule remotely?
A13: The EL05’s capabilities depend on the specific model. Some models might offer remote adjustments via apps, while others may require manual adjustments.

Q14: Is the EL05 compatible with all types of underfloor heating systems?
A14: The EL05 is designed for underfloor heating systems, but compatibility may vary depending on the specific system and manufacturer.

Q15: How can users ensure they get the most out of the EL05 thermostat?
A15: To make the most of the EL05 thermostat, users should carefully read the product manual, set personalized temperature schedules, and periodically check and adjust settings to maintain optimal comfort and energy efficiency.