EPH Controls RFRP-OT User Manual

CAUTION!
The thermostat must not be left unsupervised
when open. (Prevent non specialists and especially
children from gaining access to it.)
Only qualied electricians or authorised service
sta are permitted to open the thermostat.
If the thermostat is used in a way not specied by
the manufacturer, its safety may be impaired.
Operating Instructions
Page 1 of 4
RFRP-OT Room Thermostat Wireless
4. Installation
1. Factory default settings
How your programmable thermostat works
6. LCD Symbol / button description
5. Frost protection
2. Specications
Temperature indicator: °C
Switching dierential: 0.4°C
In built frost protection: 5°C - Not adjustable
Clock: 24 hours
Keypad lock: O
Operating mode: 5/2 day
5°C
Operating mode
Current program
Day / Month
Day of the week
Temperature
Battery low symbol
Wireless symbol
Heating on symbol
Keypad lock symbol
Current Time
(Boost to time)
3. Mounting
Contents
1. Factory default settings
2. Specications
3. Mounting
4. Installation
5. Frost protection
6. LCD symbol / buttons description
7. Resetting the thermostat
8. Keypad lock and unlock
9. Setting the date, time and operating mode
10. Factory program settings
11. Adjusting the program settings for 5/2d
12. Copy Function
13. Temporary override
14. Permanent override
15. Boost function
16. Holiday function
17. To connect the RFRP-OT thermostat to an RF1A-OT receiver
18. To disconnect the RFRP-OT thermostat from an RF1A-OT receiver
19. Backlight mode selection
20. Battery low warning
21. Replacing the batteries
22. Installer Menu (without OpenTherm® connected)
Prior to setting the thermostat, it is neccessary to
complete all required settings described in this section.
6.1 LCD Symbol description
EPH Controls Ireland
sales@ephcontrols.com www.ephcontrols.com
EPH Controls UK
sales@ephcontrols.co.uk www.ephcontrols.co.uk
Boiler Plus
RFRP-OT Room Thermostat Wireless
20190627_RFRP-OT_OpIns_JW
Important: Keep this document
Power supply: 2 x AA Alkaline Battery
Power consumption: 2 mW
Battery replacement: Once a year
Temp. control range: 5 ... 35°C
Ambient temperature: 0 ... 45°C
Dimensions: 130 x 99 x 25mm
Temperature sensor: NTC 100K Ohm @ 25°C
Temperature indication: ˚C
Switching dierential: 0.4˚C
Frost protection: Only operational in OFF mode
Pollution degree: Pollution degree 2
The mounting height should be 1.5 metres above the oor level.
The thermostat should be wall mounted in the room where the heating is to
be controlled.
The place of installation should be chosen so that the sensor can measure the
room temperature as accurately as possible.
Choose the mounting location to prevent direct exposure to sunlight or other
heating / cooling sources when mounted.
The unit can be tted to:
1. Directly on walls.
2. Table mounting with stand provided.
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 dierent programs per day - each with a time and a temperature.
There is no OFF time, only a higher and a lower 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 setpoint 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.
Frost protection is built into this thermostat.
It is pre xed at 5°C and is not adjustable.
It will only be activated when the thermostat is in the OFF mode and the
room temperature falls below 5°C.
Lower the ap at the front of the thermostat.
There is a battery compartment located below the buttons.
Apply downward pressure to remove the cover.
Insert the 2 x AA batteries and the thermostat will turn on.
Close the battery compartment.

EPH Controls RFRP-OT Specifications

General

Type	Programmable Room Thermostat
Mounting	Wall-mounted
Connectivity	Wireless
OpenTherm	Yes
Temperature Range	5°C to 30°C
Accuracy	±0.5°C
Display	LCD
Programs	7-day programmable
Weight	150g
Control Mode	Modulating
Power Source	230V AC (Receiver)
Voltage	230V AC
Switching Current	3A (resistive)
Battery Backup	Yes

Summary

Understanding the Thermostat

How your programmable thermostat works

Explains the AUTO mode operation based on programmed times and temperatures.

Factory default settings

Details the thermostat's default configuration for temperature, clock, and operating mode.

Specifications

Lists technical details including power, range, dimensions, and sensor type.

Mounting

Provides guidance on the optimal height and location for thermostat installation.

Installation

Steps for inserting batteries and preparing the thermostat for initial use.

Frost protection

Describes the fixed 5°C frost protection feature active in OFF mode.

LCD symbol / buttons description

Explains the icons and buttons on the thermostat's display and interface.

Thermostat Operation and Settings

Resetting the thermostat

Procedure to restore the thermostat to its factory default settings.

Keypad lock and unlock

Instructions for locking and unlocking the thermostat's keypad to prevent accidental changes.

Setting the date, time and operating mode

Guide to configuring the date, time, and selecting operational modes like 5/2d, 7d, or 24h.

Factory program settings

Details the pre-set temperature and time schedules for 5/2d, 7d, and 24h modes.

Adjusting the program settings for 5/2d

How to modify program times and temperatures for weekdays and weekends.

Copy function

Enables copying program settings from one day to another within 7d mode.

Temporary override

Allows temporary adjustment of the setpoint, which reverts at the next scheduled time.

Permanent override

How to set a constant temperature manually, overriding programmed schedules.

Advanced Functions and RF Connectivity

Boost function

Temporarily increases heating for a set duration (1-3 hours) in various modes.

Holiday function

Sets a period where the heating system remains off between specified start and end times.

To connect the RFRP-OT thermostat to an RF1A-OT receiver

Procedure for establishing a wireless connection between the thermostat and receiver.

To disconnect the RFRP-OT thermostat from an RF1A-OT receiver

Steps to unpair the thermostat from its associated RF receiver.

Backlight mode selection

Configuration options for the LCD backlight behavior (OFF, AUTO).

Battery low warning

Indicates when batteries are low and need replacement to prevent shutdown.

Replacing the batteries

Instructions for safely opening the compartment and replacing the AA batteries.

Installer Menu Configuration

Installer menu (without OpenTherm® connected)

Access and navigation for advanced installer settings.

PO 1: Mode (Normal / Optimum Start / Tpi)

Selects heating control mode: Normal, Optimum Start, or Time Proportional Integral.

PO 2: Hi Lo (limiting the thermostat)

Sets the minimum and maximum temperature limits for user adjustments.

PO 3: Hysteresis (differential)

Configures the temperature difference before heating turns on/off.

PO 4: Calibration

Allows recalibration of the thermostat's temperature sensor.

PO 5: Frost Protection

Enables or disables the frost protection feature.

PO 6: Exit

Exits the installer menu and returns to normal operation.