EPH CONTROLS RDTP Recessed Room Thermostat Installation Guide

: June 13, 2024
: EPH CONTROLS

Table of Contents

EPH CONTROLS RDTP Recessed Room Thermostat
Product Information
Product Usage Instructions
Specifications
Mounting & Installation
Operating Instructions
Read User Manual Online (PDF format)
Download This Manual (PDF format)

EPH CONTROLS RDTP Recessed Room Thermostat

EPH-CONTROLS-RDTP-Recessed-Room-Thermostat-product

Product Information

The RDTP A recessed Room Thermostat is a programmable thermostat designed to control the temperature in a room. It offers various features and settings to customize and optimize the heating system. Below are the key features and specifications of the thermostat:

LCD Display : The thermostat features an LCD display that provides clear and easy-to-read information.
Buttons : The thermostat is equipped with buttons for easy navigation and operation.
Wiring: Proper wiring is essential for the correct functioning of the thermostat. Refer to the wiring section in the user manual for detailed instructions.
Mounting & Installation: The thermostat can be recessed into the wall for a clean and seamless look. The user manual provides step-by-step instructions for mounting and installation.
Adjusting the Target Temperature : The thermostat allows you to adjust the target temperature according to your comfort level. Refer to the operating instructions section for detailed steps.
Locking the Keypad : You can lock the keypad to prevent unauthorized access or accidental changes to the settings. The user manual provides instructions on how to lock the keypad.
Backlight : The thermostat features a backlight for easy visibility in low-light conditions. The backlight can be enabled or disabled as per your preference.
Mode Selection : The thermostat offers different operating modes such as Normal Mode, Optimum Start Control, and Time Proportional Integral Mode. Refer to the user manual for more information on each mode.
Setting the Date, Time, and Programming Mode: The thermostat allows you to set the date, time, and programming mode according to your schedule. Detailed instructions are provided in the user manual.
Holiday Mode: This feature allows you to set a different temperature during your absence, helping you save energy. Refer to the user manual for instructions on how to activate Holiday Mode.
Factory Program Setting: The thermostat comes with a factory program setting. You can customize the program according to your requirements. The user manual provides instructions on adjusting the program setting.
Temporary Override / Permanent Override: The thermostat allows you to temporarily or permanently override the programmed settings. Refer to the user manual for instructions on how to use this feature.
Boost Function : The boost function allows you to quickly increase the temperature for a certain period.

Instructions for using this function can be found in the user manual.

Menu Function: The thermostat has a menu function that allows you to access different settings and options. The user manual provides detailed information on each menu option.
High & Low Limits: You can set high and low-temperature limits to prevent extreme temperature fluctuations. Refer to the user manual for instructions on setting these limits.
Hysteresis: The thermostat offers hysteresis settings to control how quickly the heating system turns on and off. Instructions for adjusting the hysteresis can be found in the user manual.
Calibrate: The thermostat provides a calibration function to ensure accurate temperature readings. Refer to the user manual for instructions on calibrating the thermostat.
Frost Protection: This feature protects against freezing temperatures by activating the heating system when required. Instructions for setting up frost protection can be found in the user manual.
Resetting the Thermostat: If needed, you can reset the thermostat to its factory default settings. The user manual provides instructions on how to perform a reset.

Product Usage Instructions

Wiring: Before installation, ensure proper wiring according to the provided wiring instructions in the user manual.
Mounting & Installation: Follow the step-by-step instructions in the user manual to recess and install the thermostat into the wall.
Adjusting the Target Temperature: Use the thermostat’s buttons to adjust the target temperature according to your desired comfort level. Refer to the operating instructions section for detailed steps.
Locking the Keypad : To lock the keypad, follow the instructions in the user manual to prevent unauthorized access or accidental changes to the settings.
Backlight: Enable or disable the backlight as per your preference. The user manual provides instructions on how to adjust the backlight settings.
Mode Selection: Select the desired operating mode (Normal Mode, Optimum Start Control, Time Proportional Integral Mode) using the thermostat’s menu function. Refer to the user manual for detailed instructions.
Setting the Date, Time, and Programming Mode: Set the date, time, and programming mode according to your schedule. Follow the instructions in the user manual for accurate setup.
Holiday Mode : Activate Holiday Mode to set a different temperature during your absence. Refer to the user manual for instructions on how to enable and adjust Holiday Mode.
Adjusting the Program Setting: Customize the factory program setting according to your requirements. The user manual provides instructions on how to adjust the program settings.
Temporary Override / Permanent Override: Temporarily or permanently override the programmed settings when needed. Follow the instructions in the user manual for using this feature.
Boost Function: Use the boost function to quickly increase the temperature for a certain period. Refer to the user manual for instructions on activating and utilizing this function.
Menu Function: Access different settings and options using the thermostat’s menu function. The user manual provides detailed information on each menu option.
High & Low Limits: Set high and low-temperature limits to prevent extreme temperature fluctuations. Follow the instructions in the user manual for setting these limits.
Hysteresis: Adjust the hysteresis settings to control how quickly the heating system turns on and off. Refer to the user manual for instructions on adjusting the hysteresis.
Calibrate: Calibrate the thermostat for accurate temperature readings. Follow the instructions in the user manual for calibrating the thermostat.
Frost Protection: Set up frost protection to activate the heating system when required. Refer to the user manual for instructions on configuring frost protection.
Resetting the Thermostat: If needed, perform a reset to restore the thermostat to its factory default settings. Follow the instructions in the user manual for performing a reset.
Exiting the Menu: Exit the menu function by following the instructions provided in the user manual.

Note : For more detailed information and specific instructions, refer to the complete user manual included with the product.

Factory Default Settings

High and Low Temp. limitation: Off
Keypad lock: Off
Operating mode: Normal
Temperature indicator: ˚C
Frost protection: On (5˚C)
HYS On : 0.4˚C
HYS OFF : 0.0˚C

Specifications

Contacts: Volt Free
Power supply / Input: 230VAC
Power consumption : Operating <1W Standby 0.1 mW
Temperature range: 5 … 35˚C
Ambient temperature : 0 … 45˚C
Ambient admissible humidity: 5-95%RH
Contact rating: 10(3)A 230VAC
Dimensions: 95 x 95 x 40mm
Internal Temperature sensor: NTC 100K
External Temperature sensor: NTC 10K
Backlight: White
IP rating: IP20
Pollution degree: 2
Hysteresis (Switching differential): Adjustable from 0 to 1°C 0.1°C increments
Automatic action : 1C

LCD Display

Displays the current day of the week.
Displays when setting target temperature.
Displays current room temperature.
Displays when setting HIGH and LOW temperature limits.
Displays when the keypad is locked.
Displays when the thermostat is calling for heat.
Displays current time and date.
Displays when setting holiday mode.
Displays when the thermostat is in boost mode. LCD Display
Displays current operating mode.
Displays current / target temperature.
Displays current time program. $EPH-CONTROLS-RDTP-Recessed-Room-Thermostat-fig- $1$$

Buttons

$EPH-CONTROLS-RDTP-Recessed-Room-Thermostat-fig- $2$$

Wiring

Terminal Connections

L : Live In
N : Neutral In
Terminal 1 : OFF – N/C Normally closed connection
Terminal 2 : ON – N/O Normally open connection
Terminal 3 : COM – Common connection
Terminal 4 & 5 : External Temperature Sensor / Probe

Available as an accessory if required

Notes:

If mains output is required terminals L and 3 must be electrically linked.
If an external NTC 10K sensor is connected, the thermostat will automatically detect and read the temperature from the probe’s location.

Mounting & Installation

Caution!

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.

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 meters 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 as per the diagram on page 10.
Wire the thermostat according to the wiring diagram on page 7.
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. $EPH-CONTROLS-RDTP-Recessed-Room-Thermostat-fig- $4$$

Mains operated programmable Room Thermostat

Operating Instructions

Adjusting the Target Temperature

Press to increase the target temperature from 5-35˚C.
Press or wait 5 seconds. The target temperature is now saved.
Press to decrease the target temperature from 5-35˚C.
Press or wait 5 seconds. The target temperature is now saved.

Locking the Keypad

To lock the thermostat, press and hold for 10 seconds will appear on the screen. The buttons are now disabled.
To unlock the thermostat, press, and hold for 10 seconds will disappear from the screen. The buttons are now enabled.

Backlight AUTO

There are three settings for selection.

‘AUtO’ The backlight is on for 10 seconds when any button is pressed.
‘On’ The backlight is permanently on.
‘OFF’ The backlight is permanently off.

To adjust the backlight setting, press and hold for 10 seconds. ‘AUtO’ appears on the screen.

Use and change the mode between AUTO, ON, and OFF.
Press to confirm selection and to return to normal operation.

Mode Selection AUTO

There are three modes available for selection.

OFF means the thermostat is permanently off.
MAN or manual means that the thermostat is permanently on.
AUTO means that the thermostat will operate according to the times and temperatures that have been pre-programmed.
Press to change between ‘AUTO’, ‘OFF’ & ‘MAN’.

The current mode will be underlined on the screen.

Press again to scroll through the three modes.
Press or wait 5 seconds to confirm.
- When in Manual mode the thermostat will display the current room temperature and the word ‘MAN’.
- When in the OFF mode the thermostat will display the current room temperature and the word ‘OFF’.
- When in the AUTO mode the thermostat will display the current room temperature, the number of the current program and the word ‘AUTO’.

Setting the Date, Time, and Programming Mode

Press once, and the year will begin flashing.
Press and to adjust the year.
- Press .
Repeat this for the month, day, hour and minute.
- Press .
Press and adjust from 5/2d to 7d or 24h mode.
- Press .
Press and turn DST (Day Light Saving Time) On or Off.
Wait 20 sec or press the thermostat will return to normal operation.

Holiday Mode

Holiday mode will switch the thermostat off but will have frost protection enabled for the duration of the holiday period.

Press and hold for 5 seconds. ‘HOLIDAY FROM’ will appear on the screen.
Press, and set time for holiday mode to begin. ‘HOLIDAY TO’ will appear on the screen.
Press, and set the time for holiday mode to end. The thermostat will switch off for the holiday period.
Press to cancel the holiday function.

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 6 a.m., and if P2 is set to be 10˚C at 8 a.m., the thermostat will look for the temperature to be 21˚C between 6 a.m. and 8 a.m.

Factory Program Setting

5/2d

Mon-Fri

| 06:30| 08:00| 12:00| 14:00| 17:30| 22:00
---|---|---|---|---|---|---
21˚C| 10˚C| 10˚C| 10˚C| 21˚C| 10˚C

Sat-Sun

| 08:00| 10:00| 12:00| 14:00| 17:30| 23:00
21˚C| 10˚C| 10˚C| 10˚C| 21˚C| 10˚C

7 Day

Mon-Fri

| 06:30| 08:00| 12:00| 14:00| 17:30| 22:00
---|---|---|---|---|---|---
21˚C| 10˚C| 10˚C| 10˚C| 21˚C| 10˚C

Sat-Sun

| 08:00| 10:00| 12:00| 14:00| 17:30| 23:00
21˚C| 10˚C| 10˚C| 10˚C| 21˚C| 10˚C

24 Hour

Everyday

| 06:30| 08:00| 12:00| 14:00| 17:30| 22:00
---|---|---|---|---|---|---
21˚C| 10˚C| 10˚C| 10˚C| 21˚C| 10˚C

Programming Modes

The RDTP Room Thermostat has the following programming modes available:

5/2 Day mode: Programing Monday to Friday as one block and Saturday and Sunday as a 2nd block. Each block can have 6 different times and target temperatures.
7-Day mode: Programming all 7 days individually with different times and target temperatures.
24-hour mode: Programming all 7 days as one block with the same times and target temperatures.

If 7 D mode is selected, you can program each day of the week with 6 individual times and temperatures. If 24H mode is selected, you can only program each day of the week with the same 6 times and temperatures.

Adjust the Program Setting in 5/2 Day Mode

Press twice.

Programming for Monday to Friday is now selected.

Press and adjust the P1 time.
- Press .
Press and to adjust the P1 temperature.
- Press .
Repeat this process to adjust P2 to P6 times & temperatures. Press .

Programming for Saturday to Sunday is now selected.

Press and adjust the P1 time.
- Press .
Press and to adjust the P1 temperature.
- Press .
Repeat this process to adjust P2 to P6 times & temperatures.
- Press .
Press to return to automatic mode.

While in programming mode, pressing will jump to the next day (block of days).

Temporary Override

When in AUTO mode, press or adjust the target temperature. Press or wait 5 seconds, the thermostat will operate to this new target temperature until the next switching time.

Permanent Override

Press to select ‘MAN’ or manual mode (Permanent Override).
Press .
Press or adjust the target temperature.
Press or wait 5 seconds, and the thermostat will operate to this target temperature.
To cancel permanent override, press until the ‘AUTO’ or ‘OFF’ mode is selected.

Boost Function

The thermostat can be boosted to a specific temperature for 1, 2 or 3 hours while the thermostat is operating in all modes except for holiday mode.

Press 1, 2, or 3 times, and the end time of the boost program will appear flashing on the screen.
If you press the temperature will now flash. You can adjust the target temperature by pressing the or Press or wait for 5 seconds for the boost to activate.
‘BOOST TO’ will now be displayed on the screen with the end time for the boost program.
Press again to deactivate the boost, the thermostat will revert to its previous operating mode.

Menu Function
This menu allows the user to adjust additional functions.

To access the menu, press and hold & together for 5 seconds

P01 Operating Mode
(Normal / Optimum Start / TPI)

There are three settings for selection, Normal, Delay Start, or TPI mode. The default setting is Normal.

Press and hold & together for 5 seconds.
‘P01’ will appear on the screen.
Press to select.
Use and to select between:
nOr (Normal mode)
OS (Optimum start mode)
TPI (Time proportional integral mode)
Press to confirm the mode.

Normal Mode (Nor)

When the temperature falls below the target temperature , will appear and the thermostat will activate the demand for heat.
When the temperature rises above the target temperature , will disappear, and the thermostat will cancel the demand for heat.

$EPH-CONTROLS-RDTP-Recessed-Room-Thermostat-fig- $15$$ Optimum Start Control (OS)

When the thermostat is in Optimum Start mode, it will try to reach the target temperature by the start of the next switching time. This is done by setting the Ti (time interval) on the thermostat in this menu to 10, 15, 20, 25 or 30 minutes. This will allow the thermostat 10 to 30 minutes to increase the room temperature by 1°C.

To achieve the target temperature when the program starts, the thermostat will read:

The Room Temperature (RT)
The Setpoint Temperature (ST)
The Target Temperature Difference (TTD) is the difference between the setpoint temperature and the room temperature . The time (in minutes) that it will take to overcome (TTD) is called Optimum Start Time (OST) and its maximum value is 3 hours = 180 mins. This is subtracted from the start time.

As the temperature increases the thermostat will recalculate the OST.

For example when Ti = 20 Program 1 on the thermostat is 21°C for 06:30 am and the room temperature is 18°C. The thermostat will start the heating at 05:30 am to reach 21°C at 06:30 am @ Ti=20.

For example when Ti = 10 Program 1 on the thermostat is 21°C at 06:30am and the room temperature is 18°C. The thermostat will start the heating at 06:00 am to reach 21°C at 06:30 am @ Ti=10.

Time Proportional Integral Mode (TPI)
When the thermostat is in TPI mode and the temperature rises in the zone and falls into the Proportional Bandwith section, TPI will start to affect the operation of the thermostat. The thermostat will turn on and off as it gains heat so that it doesn’t overshoot the target by too much. It will also turn on if the temperature is falling so it doesn’t undershoot the target which will leave the user with a more comfortable level of heat.

2 settings will affect the thermostat operation

The number of heating cycles per hour
The Proportional Bandwith

CyC – Number of Heating Cycles per hour 6 Cycles This value will decide how often the thermostat will cycle the heating on and off when trying to achieve the target temperature. You can select 2/3/6 or 12.

Pb -Proportional Bandwith 2°C
This value 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.

$EPH-CONTROLS-RDTP-Recessed-Room-Thermostat-fig- $19$$

Once TPI mode is selected, ‘CYC’ and ‘06’ will appear on the screen.

Use and select from 2,3,6 or 12.
Press to confirm.

‘P Band’ and ‘2.0’ will appear on the screen.

Use and select from 1.5 to 3.0.
Press to confirm.
Press to return to normal operation.

P02 Setting High & Low Limits Hi 35°C Lo 5°C

This menu allows the installer to change the minimum and maximum temperatures that the thermostat can be set at. To access this setting, press and hold & together for 5 seconds. ‘P01’ will appear on the screen.

Press until ‘P02’ appears on the screen.
Press to select.
Use and select ‘ON’.
Press to select. ‘HI LIM’ will appear on the screen, and the temperature will begin to flash.
Use and select the high limit for the thermostat.
Press to confirm. ‘LO LIM’ will appear on the screen, and the temperature will begin to flash.
Use and select the low limit for the thermostat.
Press to confirm. The settings will be saved.
Press to return to the previous screen. When this setting is enabled, ‘LIM’ will appear permanently on the screen.

P03 Hysteresis HOn & HOff HOn 0.4°C HOFF 0.0°C

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.
- The settings will be saved.
Press to return to the previous screen.

P04 Calibrate

This menu allows the installer to calibrate the temperature of the thermostat.

To access this setting, press and hold & together for 5 seconds.
- ‘P01’ will appear on the screen.
Press until ‘P04’ appears on the screen.
Press to select.
- ‘CAL’ and the actual temperature will appear on the screen.
Press and to calibrate the temperature.
Press to confirm the temperature.

The current temperature will be saved and the user will be returned to the previous screen.

P05 Frost Protection On 5°C

This menu allows the installer to enable or disable frost protection on the thermostat. When ‘ON’ the thermostat will automatically call for heat when the temperature drops to 5˚C.

To access this setting, press and hold & together for 5 seconds.
- ‘P01’ will appear on the screen.
Press until ‘P05’ appears on the screen.
Press to select.
- ‘Fr’ will appear on the screen and ‘ON’ will begin to flash.
Use and turn frost protection ‘ON’ or ‘OFF’.
Press to confirm.
The setting will be saved and the user will be returned to the previous screen.

P06 Resetting the Thermostat

To reset the thermostat to factory settings, & Press and hold together for 5 seconds.
- ‘P01’ will appear on the screen.
Press until ‘P06’ appears on the screen.
Press to select.
- ‘FACt’ will appear on the screen and ‘no’ will begin to flash.
Press . ‘YES’ will flash on the screen.
Press to confirm.
The thermostat will restart and revert to its factory-defined settings.

P07 Exiting the Menu