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EPH CONTROLS CRTP2 Room Thermostat Instruction Manual

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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

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

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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Get the free PDF manual for the EPH CONTROLS CRTP2 Room Thermostat Instruction Manual and access setup steps, usage instructions, and troubleshooting tips. 👉 View online or download now to keep your thermostat running smoothly!

EPH Controls CRTP2 Manual: Questions and Answers

EPH Controls CRTP2 specifications

Power supply	2 x AA Alkaline Battery
Maximum load	8A 230Vac
Sensor	NTC 10K Ohm @ 25°C
Operating temperature	0 ... 50°C
Dimensions	84 x 84 x 30mm
Power consumption	8 VA

Full specifications, page 1

Can a battery-operated thermostat work with mains voltage heating systems?

Yes. The CRTP2 is battery powered but can control mains voltage output. Connect 230V to terminal 2 in the wiring diagram to enable mains voltage switching. Instruction Manual, p. 1

What does the On/Standby symbol mean on the EPH Controls CRTP2 display?

It indicates whether the thermostat is actively heating or in standby mode. In standby, frost protection activates if room temperature drops to 5°C. Instruction Manual, p. 1

EPH Controls CRTP2 compared with other EPH Controls thermostats

Specification	EPH Controls CRTP2	EPH Controls CDT2-24	EPH Controls CDTP2 Hardwired	EPH Controls CP4B
Power supply	2 x AA Alkaline Battery	24Vac 50Hz	230Vac 50Hz	2 x AA Alkaline Batteries
Maximum load	8A 230Vac	7A 24Vac	8A 230Vac	8A 230Vac
Sensor	NTC 10K Ohm @ 25°C	NTC 10K Ohm @ 25°C	NTC 10K Ohm @ 25°C	NTC 100K Ohm @ 25˚C
Operating temperature	0 ... 50°C	0 ... 50°C	0 ... 50°C	0 … 45˚C
Dimensions	84 x 84 x 30mm	84 x 84 x 30mm	84 x 84 x 30mm	130 x 99 x 25mm