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CDT2 Room Thermostat

Contents

Factory default settings

Speci cation & wiring

Mounting

Installation

Wiring diagram

Frost protection

Button / symbol description

Resetting the thermostat

Keypad lock and unlock

10. High and Low temperature limitation

11. Adjusting the switching di erential

12. Adjusting the setpoint temperature

13. Changing the thermostat mode

14. Normal control mode (On / O )

15. Delay start control mode

16. Time Proportional Integral Mode (TPI)

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

1. Factory default settings

Contacts:

Temperature indicator:

Switching di erential:

In built frost protection:

High and Low temp. limitation: O

Blue backlight activated :

Keypad lock:

2. Speci cations & wiring

Power supply:

Power consumption:

Temp. control range:

Ambient temperature:

Contact rating:

Dimensions:

Temperature sensor:

Switching di erential:

Frost protection:

3. Mounting

The mounting height should be 1.5 meters 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:

4. Installation

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

[email protected] www.ephcontrols.com

Volt Free

°C

0.4°C

5°C

for 10 secs after any button is pressed

230Vac 50Hz

8 VA

5 ... 35°C

0 ... 50°C

7A 230Vac

84 x 84 x 30mm

NTC 10K Ohm @ 25°C

Adjustable from 0.2/0.4/0.6/0.8/1.0˚C

Only operational in stand by mode

1. Recessed conduit boxes

2. Surface mounting boxes

3. Directly on walls.

with Delay Start

5. Wiring diagram

INTERNAL WIRING DIAGRAM CDT2

If mains voltage output is required, terminals L & 2 must be electrically linked.

6. Frost protection

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 stand by mode and

the room temperature reaches 5°C.

7. Button / Symbol description

Room temperature

On / Standby button

8. Resetting the thermostat

It is necessary to reset the thermostat prior to initial use.

Press and hold the

dEL will appear on the screen.

Press the

RESET

9. Keypad lock and unlock

To lock the keypad, press and hold the

will appear on the screen. The keypad is now locked.

To unlock the keypad, press and hold the

will disappear from the screen. The keypad is now unlocked.

EPH Controls UK

[email protected] www.ephcontrols.co.uk

Page 1 of 3

Operating Instructions

CAUTION!

Before commencing any work on the electrical

connections, you must rst 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 quali ed electricians or authorised

service sta are permitted to open the thermostat.

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

3 2 1 L N

COM

OFF

MAINS

SUPPLY

5°C

Set button

Set

button for 5 seconds.

button on the side of the thermostat.

OFF

and

Heating ON symbol

Reset button

Set point increase

Set point decrease

buttons for 5 seconds.

20221103_CDT2-230-DS-TPI_Opsins_PK