EPH Controls CP4M Operating instructions

Installation and Operation Guide
Mains Operated
Programmable Thermostat
CP4M

Installation Instructions
5
How your Programmable Thermostat works
8
Wiring diagram
9
Mounting & Installation
Operating Instructions
Table of contents
6
Factory Default Settings
6
Specications
15
Resetting the thermostat
16
Setting the date, time and programming mode
17
Factory Program Setting
14
Button Description
13
LCD Symbol Description
20
Copy Function
21
Temporary Override and Permanent Override
22
Boost Function
15
Keypad lock and unlock
23
Holiday Function
18
Programming Modes
19
Adjust the program setting in 5/2 Day mode

36
Installer menu (with OpenTherm® connected)
36
PO 6 Setting DHW temperature
37
PO 7 OpenTherm® Information
24
Backlight mode selection
38
PO 8 DHOP
38
PO 9 Set OpenTherm® Parameters
25
Installer menu
29
TPI
31
PO 2 Setting high & low limits
31
PO 3 Hysteresis HON and HOFF (Dierential)
26
Optimum Start
26
Normal
26
PO 1 Operating Mode
32
PO 4 Calibration
32
PO 5 Frost Protection
32
PIN Function
35
Exit
40
Exit
41
Service Interval

pMains Operated Programmable Thermostat
Installation Instructions

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EPH Controls Ltd.
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.
How your programmable thermostat works

6CP4M
Power supply: 200 - 240 Vac, 50-60 HZ
Power consumption: 630 mW
Temp. control range: 5 … 35˚C
Ambient temperature: 0 … 50˚C
Admissible ambient humidity: 5 - 95% RH
Specications
RFRP-OT Room Thermostat
Factory Default Settings
Contacts: Volt free contacts
Program: 5/2D
Backlight: Auto
Keypad: Unlocked
Clock type: 24 Hr Clock
Daylight saving: On
In built frost protection: 5˚C - Not adjustable
Switching dierential: 0.4˚C

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EPH Controls Ltd.
Dimensions: 140 x 99 x 30mm
Temperature sensor: NTC 100K Ohm @ 25˚C
Temperature indication: ˚C
Frost protection: OFF
Contact rating: 250Vac 7A
Program memory backup: 3 months
Battery: LIR2032
Backlight: Blue
IP Rating: IP20
Backplate: British System Standard
Pollution degree: Pollution Degree 2
Rated impluse voltage: 2,500V as per EN 60730
Automatic action: Type 1.C
Software: Class A
Ball pressure test temperature 70˚C

8CP4M
Wiring diagram
If mains voltage output is required, terminal L & 1 must be electrically linked.
The cable link is provided with this thermostat.
200-240Vac
50Hz-60Hz CONTACT RATING: 250Vac~/7A
OFFCOM ON

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EPH Controls Ltd.
Mounting & Installation
Caution!
Installation and connection should only be carried out by a qualied person.
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.
Prior to setting the thermostat, it is necessary to complete all required settings
described in the section.
This thermostat can be mounted in the following ways:
1) To a recessed conduit box
2) Directly mounted on wall

10 CP4M
1) The mounting height should be 1.5 metres above the oor level.
2) 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.
3) Fix the mounting plate directly to the wall with the screws provided.
4) Attach the thermostat to the mounting plate.
Mounting & Installation (Continued)

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EPH Controls Ltd.
1 2
140
99
34
5 6

pMains Operated Programmable Thermostat
Operating Instructions

13
EPH Controls Ltd.
LCD Symbol Description
Operating mode
Current program
Day / Month
Day of the week
Heating on symbol
Keypad lock symbol
Current Time
(Boost to time)
Temperature

14 CP4M
Button Description
Automatic mode Set Time/Date Set point increase
Manual mode Holiday mode Set point decrease
O mode Copy function Conrm button
Reset buttonProgram mode Boost mode
AUTO TIME
MAN HOL
OFF COPY OK
PROG BOOST
Manual
mode
O mode
Program mode
Holiday mode
Time / date
Copy function
Boost mode
Automatic
mode
(Back)
OK conrm button
Set point increase
Set point decrease
Reset button

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EPH Controls Ltd.
RFRP-OT Room Thermostat
Resetting the thermostat
Keypad lock and unlock OFF
To lock the keypad, press and hold the and buttons for 10 seconds.
will appear on the screen. The keypad is now locked.
To unlock the keypad, press and hold the and buttons for 10 seconds.
will disappear from the screen. The keypad is now unlocked.
Press the button on the side of the thermostat.
‘rst no’ will appear on the screen.
Press the button.
‘rst yes’ will appear on the screen.
Press the OK button to reset the thermostat.

16 CP4M
Press the TIME button once, the year will begin ashing.
Press the or buttons to adjust the year. Press OK .
Press the or buttons to adjust the month. Press OK .
Press the or buttons to adjust the day. Press OK .
Press the or buttons to adjust the hour. Press OK .
Press the or buttons to adjust the minute. Press OK .
Press the or buttons to adjust from 5/2d to 7d or 24h mode.
Press the or buttons to turn DST (Day Light Saving time) On or O.
Press the AUTO button or wait 5 seconds and the thermostat will return to
normal operation.
Setting the date, time and programming mode

17
EPH Controls Ltd.
Factory Program Setting 5/2d
5/2 Day
P1 P2 P3 P4 P5 P6
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
P1 P2 P3 P4 P5 P6
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
P1 P2 P3 P4 P5 P6
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

18 CP4M
The CP4M Main Operated Programmable 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 dierent times and
temperatures.
7 Day mode Programming all 7 days individually with
dierent times and temperatures.
24 Hour mode Programming all 7 days as one block with the
same time and temperatures.
Programming Modes
If 7d 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.

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EPH Controls Ltd.
Press the PROG button once.
Programming for Monday to Friday is now selected.
Press the or buttons to adjust the P1 time. Press OK .
Press the or buttons to adjust the P1 temp. Press OK .
Repeat this process to adjust P2 to P6 times and temperatures. Press OK .
Programming for Saturday to Sunday is now selected.
Press the or buttons to adjust the P1 time. Press OK .
Press the or buttons to adjust the P1 temp. Press OK .
Repeat this process to adjust P2 to P6 times and temperatures.
Press the AUTO button to return to automatic mode.
While in PROG Mode pressing the PROG button will jump from P1-P2 etc
without changing the temperature.
While in PROG Mode pressing the TIME button will jump to the next day
(block of days).
Adjust the program setting in 5/2 Day mode

20 CP4M
Copy Function
Copy function may only be used if the thermostat is in the 7d mode.
Set the times and temperatures for the day that you wish to copy from
in PROG Mode.
When still on the day press the COPY button.
The day of the week that you have selected will be shown with ‘COPY’
below it.
The next day will begin to ash on the top of the screen.
Press the button to copy the times and temperatures to that day.
Press the button to skip a day.
You can copy to multiple days using the button.
Press the OK button when copying has been completed.