EPH CONTROLS CRTP2 Room Thermostat Instruction Manual

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Page 1 of 3  

Operating Instructions  

CRTP2 Room Thermostat Battery Operated  

Contents  

1. Factory default settings  

2. Specification & wiring  

3. Mounting  

CAUTION!  

4. Installation  

5. Wiring diagram  

6. Frost protection  

Before commencing any work on the electrical  

connections, you must first disconnect the thermostat  

from the mains. None of the 230V connections must be  

live until the installation has been completed and the  

housing is closed. Only qualified electricians or authorised  

service staff are permitted to open the thermostat.  

7. Button / symbol description  

8. Resetting the thermostat  

9. Keypad lock and unlock  

10. Setting the date, time and operating mode  

11. Factory default program settings  

12. Adjusting the program settings for 5/2d  

13. Temporary override (Manual)  

14. Permanent override (Hold)  

15. Adjusting the switching differential  

16. Replacing the batteries  

17. Installer Menu  

There are parts that may carry mains voltage behind the  

cover. The thermostat must not be left unsupervised  

when open. (Prevent non specialists and especially  

children from gaining access to it.)  

Important:  

Keep this document  

Prior to setting the thermostat, it is neccessary to complete all required settings described in this section.  

1. Factory default settings  

5. Wiring diagram  

Contacts:  

Volt Free  

INTERNAL WIRING DIAGRAM CRTP2  

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Temperature indicator:  

Switching differential:  

In built frost protection:  

°C  

0.4°C  

5°C  

ON COM  

High and Low temp. limitation: Off  

If mains voltage output is required, 230V must be connected to terminal 2.  

Clock:  

24 hours  

Off  

Keypad lock:  

5°C  

6. Frost protection  

2. Specifications & wiring  

Frost protection is built into this thermostat, it is pre fixed at 5°C and is not  

adjustable.  

Power supply:  

2 x AA Alkaline Battery  

8 VA  

Power consumption:  

Temp. control range:  

Ambient temperature:  

Contact rating:  

It will only be activated when the thermostat is in the stand by mode and  

the room temperature reaches 5°C.  

5 ... 35°C  

0 ... 50°C  

8A 230Vac  

Dimensions:  

84 x 84 x 30mm  

Temperature sensor:  

Switching differential:  

Frost protection:  

NTC 10K Ohm @ 25°C  

Adjustable from 0.2/0.4/0.6/0.8/1.0˚C  

Only operational in stand by mode  

7. Button / Symbol description  

Keypad lock symbol  

Heating ON symbol  

Current programme  

3. Mounting  

The mounting height should be 1.5 meters above the floor 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.  

Day of the week  

Program  

P3  

Choose the mounting location to prevent direct exposure to sunlight or other  

heating / cooling sources when mounted.  

On / Standby symbol  

Reset button  

The unit can be fitted to:  

1. Recessed conduit boxes  

2. Surface mounting boxes  

3. Directly on walls.  

Set point increase  

Set point decrease  

OK button  

Hold button  

4. Installation  

On / Standby button  

Set button  

Slacken the fastening screw on the bottom of the thermostat with a philips  

head screwdriver.  

The thermostat is hinged and can be opened 180 degrees.  

Mount the unit as described in section 3.  

Wire the thermostat according to the wiring diagram.  

Close the thermostat and tighten the fastening screw.  

EPH Controls Ireland  

EPH Controls UK  

technical@ephcontrols.com www.ephcontrols.com  

technical@ephcontrols.com www.ephcontrols.co.uk  

20221013_CRTP2_OpIns_PK  

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General	Details
Name	EPH CONTROLS CRTP2 Room Thermostat Instruction Manual
Make	EPH CONTROLS
Language	English
Filetype	PDF (Download)
File size	0.25 MB

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• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• EPH CONTROLS

EPH CONTROLS CRTP2 Room Thermostat Instruction Manual Overview

Summary of Contents

• Page 1: Operating instructions for CRTP2 room thermostat, battery operated. Factory default settings. Specification and wiring. Mounting height should be 1.5 meters above the floor level. The thermostat should be wall mounted in the room where heating is to be controlled. Frost protection is built into this thermostat, pre-fixed at 5°C and not adjustable. Power supply requires 2 x AA alkaline batteries. Temperature control range is from 5 to 35°C. The thermostat must not be left unsupervised when open. The unit can be fitted to recessed conduit boxes, surface mounting boxes, or directly on walls.
• Page 2: Operating instructions CRTP2 room thermostat battery operated Adjusting the program settings for 5/2d It is necessary to reset the thermostat prior to initial programming. Programming for Monday to Friday is now selected. If 7 D mode is selected, you can program each day of the week with 6 individual times and temperatures. Temporary override (manual) allows the thermostat to switch to the temperature set by the user until the next program is activated. Permanent override (hold) allows the thermostat to operate to the temperature set by the user. Factory program setting for 5/2d includes specific times and temperatures for weekdays and weekends. Replacing the batteries requires slacking the fastening screw and using 2 x AA alkaline batteries. The thermostat is hinged and can be opened 180 degrees.
• Page 3: Operating instructions for CRTP2 room thermostat, battery operated. Installer menu access requires holding OK for 5 seconds. In normal mode, the thermostat aims to reach the target temperature after program changes. Optimum start mode allows the thermostat to reach the target temperature by the next switching time. Ti (time interval) can be set to 10, 15, or 20 minutes to increase room temperature by 1°C. The thermostat reads room temperature, setpoint temperature, and target temperature difference. Optimum start time (OST) can be a maximum of 3 hours, which is subtracted from the start time. The thermostat recalculates OST if the temperature increases too quickly. Examples illustrate how the thermostat adjusts heating times based on Ti settings.