EPH CONTROLS RDTP-24 24V Recessed Room Thermostat Instruction Manual

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RDTP-24  

24V Recessed Room Thermostat  

Installation and Operation Guide  

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General	Details
Name	EPH CONTROLS RDTP-24 24V Recessed Room Thermostat Instruction Manual
Make	EPH CONTROLS
Language	English
Filetype	PDF (Download)
File size	0.5 MB

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• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• EPH CONTROLS

EPH CONTROLS RDTP-24 24V Recessed Room Thermostat Instruction Manual Overview

Summary of Contents

• Page 1: 24V recessed room thermostat Installation and operation guide
• Page 2: Table of contents Installation instructions Factory default settings Specifications LCD display Buttons Wiring Mounting & installation Operating instructions Adjusting the target temperature Locking the keypad Backlight Mode selection Setting the date, time and programming mode Holiday mode How your programmable thermostat works Factory program setting Programming modes Adjust the program setting in 5/2 day mode
• Page 3: Temporary override / permanent override Boost function Menu function Operating mode Normal mode (Nor) Optimum start control (OS) Time proportional integral mode (TPI) Setting high & low limits Hysteresis HOn & HOFF Calibrate
• Page 4: 24V programmable room thermostat Installation instructions
• Page 5: Factory default settings include high and low temperature limitations. The keypad lock is set to off. The operating mode is normal. The temperature indicator is displayed in degrees Celsius. Frost protection is activated at 5 degrees Celsius. The hysteresis (HYS) is set to 0.4 degrees Celsius. HYS can also be turned off.
• Page 6: Specifications Switch output: SPDT Volt Free 24Vac Power consumption: Operating <1W, Standby 0.1 mW Ambient temperature: 5 … 35˚C, 0 … 45˚C Ambient admissible humidity: 5 - 95%RH Contact rating: 5(1)A 24Vac Dimensions: 95 x 95 x 40mm Internal temperature sensor: NTC 100K External temperature sensor: NTC 10K Program memory backup: Battery LIR2032, 3 months Hysteresis (Switching differential): Adjustable from 0 to 1°C, 0.1°C increments
• Page 7: LCD display features include: - Displays current day of the week. - Displays when setting target temperature. - Displays current room temperature. - Displays when setting high and low temperature limit. - Displays when keypad is locked. - Displays when the thermostat is calling for heat. - Displays current time and date. - Displays when setting holiday mode. - Displays when thermostat is in boost mode. - Displays current operating mode.
• Page 8: Menu button OK button Time +1h Down button Up button
• Page 9: Wiring Temp Sensor 24Vac Supply Terminal Connections 24Vac Live In 24Vac Neutral In Normally closed connection Normally open connection Common connection
• Page 10: Mounting & installation Installation and connection should only be carried out by a qualified person. Only qualified electricians or authorised service staff are permitted to open the thermostat. If the thermostat is used in a way not specified by the manufacturer, its safety may be impaired. Prior to setting the thermostat, it is necessary to complete all required settings described in this section. Before commencing installation, the thermostat must be first disconnected from the mains. This thermostat can be mounted to a recessed conduit box.
• Page 11: Remove the thermostat from its packaging. Choose a mounting location so that the thermostat can measure the room temperature as accurately as possible. Mount the thermostat 1.5 metres above the floor level. Prevent direct exposure to sunlight or other heating/cooling sources. Use the fastening clip on the base of the thermostat to release the front housing from the rear wiring box. Wire the thermostat according to the wiring diagram. Screw the rear wiring box to the recessed back box. Attach the front housing to the rear wiring box until it clips securely into place.
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• Page 13: 24V programmable room thermostat Operating instructions
• Page 14: Adjusting the target temperature allows you to set it from 5 - 35˚C. Press to increase or decrease the target temperature. The target temperature is saved after waiting 5 seconds. Locking the keypad disables the buttons for security. To lock the thermostat, press and hold specific buttons for 10 seconds. A lock icon will appear on the screen when locked. To unlock the thermostat, press and hold the same buttons for 10 seconds. The lock icon will disappear when unlocked.
• Page 15: Backlight settings include three options: 'AUtO', 'On', and 'OFF'. In 'AUtO', the backlight is on for 10 seconds when any button is pressed. In 'On', the backlight is permanently on. In 'OFF', the backlight is permanently off. To adjust the backlight setting, press and hold for 10 seconds. 'AUtO' will appear on the screen. Use the designated buttons to change the mode between AUTO, ON, and OFF. Press the confirm button to finalize the selection and return to normal operation.
• Page 16: Mode selection allows for three options: OFF, MAN, and AUTO. OFF means the thermostat is permanently off. MAN means the thermostat is permanently on. AUTO means the thermostat operates according to pre-programmed times and temperatures. Press to change between AUTO, OFF, and MAN. The current mode will be underlined on the screen. In Manual mode, the thermostat displays the current room temperature and the word 'MAN'. In OFF mode, it displays the current room temperature and the word 'OFF'. In AUTO mode, it shows the current room temperature, the program number, and the word 'AUTO'.
• Page 17: Setting the date, time and programming mode involves pressing specific buttons to adjust the year, month, day, hour, and minute. You can switch between 5/2d and 24h mode. There is an option to turn Daylight Saving Time on or off. After adjustments, the thermostat will return to normal operation after 20 seconds or by pressing a button. Holiday mode switches the thermostat off while enabling frost protection. You can set the start and end time for holiday mode. The thermostat will remain off during the holiday period. There is an option to cancel the holiday function by pressing a button for 5 seconds.
• Page 18: How your programmable thermostat works When the thermostat is in the AUTO mode, it will operate according to the times and temperatures that have been programmed. The user can select from 6 different programs per day, each with a time and a temperature. There is no OFF time, only a higher and a lower target temperature. If the user wants the thermostat to be OFF at a certain time, set the temperature for this time to be low. The thermostat will turn ON if the room temperature is lower than the target temperature for the current period. Example: If P1 is set to be 21˚C at 6am, and if P2 is set to be 10˚C at 8am, the thermostat will look for the temperature to be 21˚C between 6am and 8am.
• Page 19: Factory program setting includes various time and temperature settings for different days. The schedule is divided into three programs: P1, P2, and P3. Each program has specific temperature settings at designated times throughout the day. Typical settings include 21˚C in the morning and evening, with lower temperatures during the day. The program is designed for weekdays (Mon-Fri) and weekends (Sat-Sun). There is also a 24-hour program option available. The temperature settings vary from 10˚C to 21˚C based on the time of day. The document outlines the factory default settings for the device. EPH Controls Ltd. is mentioned as the manufacturer. The settings are structured to optimize comfort and energy efficiency.
• Page 20: Programming modes of the RDTP-24 Room Thermostat include 5/2 Day mode, 7 Day mode, and 24 Hour mode. 5/2 Day mode allows programming Monday to Friday as one block and Saturday and Sunday as a second block, with 6 different times and target temperatures for each block. 7 Day mode enables programming all 7 days individually with different times and target temperatures. 24 Hour mode allows programming all 7 days as one block with the same times and target temperatures. In 7 Day mode, each day can be programmed with 6 individual times and temperatures. In 24 Hour mode, each day can only be programmed with the same 6 times and temperatures.
• Page 21: Adjust the program setting in 5/2 day mode. Programming for Monday to Friday is now selected. Press to adjust the P1 time. Press to adjust the P1 temperature. Repeat this process to adjust P2 to P6 times and temperatures. Programming for Saturday to Sunday is now selected. Press to adjust the P1 time. Press to adjust the P1 temperature. Repeat this process to adjust P2 to P6 times and temperatures. Press to return to automatic mode.
• Page 22: Temporary override allows adjustment of the target temperature in AUTO mode. Pressing specific buttons will change the target temperature. The thermostat will maintain this new target until the next switching time. Permanent override can be activated by selecting MAN mode. Adjustments can be made in manual mode as well. To cancel permanent override, specific buttons must be pressed until AUTO or OFF mode is selected.
• Page 23: Boost function allows the thermostat to be set to a specific temperature for 1, 2, or 3 hours. This function is available in all modes except for holiday mode. Pressing 1, 2, or 3 times will display the end time of the boost program on the screen. Adjust the target temperature by pressing the appropriate buttons. Pressing again or waiting for 5 seconds will activate the boost. The screen will display 'BOOST TO' along with the end time for the boost program. Pressing again will deactivate the boost. The thermostat will revert to its previous operating mode after deactivation.
• Page 24: Menu function allows the user to adjust additional functions. To access the menu, press and hold specific buttons together for 5 seconds. P01 operating mode has three settings: Normal, Delay Start, or TPI mode. The default setting is Normal. Press and hold specific buttons together for 5 seconds to access the mode selection. ‘P01’ will appear on the screen for mode selection. Use specific buttons to select between Normal mode, Optimum start mode, and Time proportional integral mode. Press a specific button to confirm the selected mode.
• Page 25: Normal mode activates when the temperature falls below the target temperature. The thermostat will demand heat when this occurs. The demand for heat is canceled when the temperature rises above the target temperature. A graph illustrates the normal mode with on/off control. The target temperature is set at 21˚C. The temperature readings range from 17˚C to 22˚C. Time is measured in minutes from 0 to 100.
• Page 26: Optimum Start Control (OS) allows the thermostat to reach the target temperature by the start of the next switching time. The Ti (time interval) can be set to 10, 15, 20, 25, or 30 minutes to increase the room temperature by 1°C. To achieve the target temperature, the thermostat reads the room temperature (RT), setpoint temperature (ST), and target temperature difference (TTD). TTD is the difference between the setpoint temperature and the room temperature. The time to overcome TTD is called Optimum Start Time (OST), with a maximum value of 3 hours (180 minutes). OST is subtracted from the start time. As the temperature increases, the thermostat recalculates the OST.
• Page 27: Optimum start control graph with Ti = 20. Optimum start control graph with Ti = 15. Optimum start control graph with Ti = 10. Example when Ti = 20: The thermostat will start the heating at 05:30am to reach 21°C for 06:30am. Example when Ti = 10: The thermostat will start the heating at 06:00am to reach 21°C for 06:30am. Target temperature difference. Program 1 on the thermostat is 21°C for 06:30am and the room temperature is 18°C. Target temperature difference ˚C. EPH Controls Ltd.
• Page 28: Operating mode Time proportional integral mode (TPI) When the thermostat is in TPI mode, it will start to affect the thermostat's operation as the temperature rises and falls within the proportional bandwidth section. The thermostat will turn on and off to avoid overshooting the target temperature. It will also activate if the temperature is falling to prevent undershooting the target. There are two settings that will affect the thermostat's operation: the number of heating cycles per hour and the proportional bandwidth. The number of heating cycles per hour determines how often the thermostat cycles the heating on and off. You can select from 2, 3, 6, or 12 cycles per hour.
• Page 29: Proportional bandwidth refers to the temperature below the target at which the thermostat will start to operate in TPI control. You can set this temperature from 1.5°C to 3.0°C in 0.1°C increments. Graph (27.1) illustrates TPI control with target and actual temperatures. The target temperature is set at 22°C. The proportional bandwidth is shown between 19°C and 21°C. The graph indicates the heating on and off times in minutes. Heating operation is depicted over a time span of 100 minutes. The document is associated with EPH Controls Ltd. The temperature range for operation is critical for effective thermostat function. TPI control is essential for maintaining desired temperature levels.
• Page 30: Operating mode Time proportional integral mode (TPI) Once TPI mode is selected, ‘CYC’ and ‘06’ will appear on the screen. Use to select from 2, 3, 6 or 12. Press to confirm. ‘P Band’ and ‘2.0’ will appear on the screen. Use to select from 1.5 to 3.0. Press to confirm. Press to return to normal operation.
• Page 31: Setting high and low limits allows the installer to change the minimum and maximum temperatures that the thermostat can be set at. To access this setting, press and hold specific buttons together for 5 seconds. ‘P01’ will appear on the screen. Press to select ‘P02’. Press to select ‘ON’. ‘HI LIM’ will appear on the screen, and the temperature will begin to flash. Use buttons to select the high limit for the thermostat. Press to confirm. ‘LO LIM’ will appear on the screen, and the temperature will begin to flash. When this setting is enabled, ‘LIM’ will appear permanently on the screen.
• Page 32: Hysteresis HOn & HOff This menu allows the installer to change the switching differential of the thermostat when the temperature is rising and falling. If ‘HYS ON’ is set at 0.4˚C and the setpoint is 20˚C, then the thermostat will switch on when the temperature drops below 19.6˚C. If ‘HYS OFF’ is set at 0.2˚C and the setpoint is 20˚C, then the thermostat will switch off when the temperature reaches 20.2˚C. To access this setting, press and hold & together for 5 seconds. ‘P01’ will appear on the screen. Press until ‘P03’ appears on the screen. Press. ‘HOn’ will appear on the screen and the differential temperature will begin to flash. Use & to select the ‘HOn’ temperature, press to confirm. ‘HOFF’ will appear on the screen and the differential temperature will begin to flash. Use & to select the ‘HOFF’ temperature, press to confirm.
• Page 33: Calibrate menu allows the installer to calibrate the temperature of the thermostat. To access this setting, press and hold specific buttons together for 5 seconds. ‘P01’ will appear on the screen. Press until ‘P04’ appears on the screen. ‘CAL’ and the actual temperature will appear on the screen. Press and specific buttons to calibrate the temperature. Press to confirm the temperature. The current temperature will be saved. The user will be returned to the previous screen.
• Page 34: Frost protection can be enabled or disabled on the thermostat. When enabled, the thermostat will call for heat at 5˚C. To access the frost protection setting, press and hold specific buttons for 5 seconds. ‘P01’ will appear on the screen when accessing the setting. Navigate to ‘P05’ to select frost protection. ‘Fr’ will appear on the screen with ‘ON’ flashing. Use designated buttons to turn frost protection ‘ON’ or ‘OFF’. Press to confirm the setting. The setting will be saved, returning the user to the previous screen. This feature is important for preventing freezing conditions.
• Page 35: Resetting the thermostat To reset the thermostat to factory settings, press and hold the appropriate buttons together for 5 seconds. ‘P01’ will appear on the screen. Press until ‘P06’ appears on the screen. ‘FACt’ will appear on the screen and ‘nO’ will begin to flash. Press ‘YES’ will flash on the screen. The thermostat will restart and revert to its factory defined settings. Exiting the menu To exit from the installer menu at any time, press the designated button. Alternatively, navigate to P07 and press the appropriate button.
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