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CDT2 Room Thermostat Hardwired |
Operating Instructions |
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Contents
1.Factory default settings
2.Speci cation & wiring
3.Mounting
4.Installation
5.Wiring diagram
6.Frost protection
7.Button / symbol description
8.Resetting the thermostat
9.Adjusting the setpoint temperature
10.Keypad lock and unlock
11.High and Low temperature limitation
12.Adjusting the switching di erential
Prior to setting the thermostat, it is neccessary to complete all required settings described in this section.
1. Factory default settings
Contacts: |
Volt Free |
Temperature indicator: |
°C |
Switching di erential: |
0.4°C |
In built frost protection: |
5°C |
High and Low temp. limitation: |
O |
Blue backlight activated : |
for 10 secs after any button is pressed |
Keypad lock: |
O |
2. Speci cations & wiring
Power supply: |
230Vac 50Hz |
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Power consumption: |
8 VA |
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Temp. control range: |
5 ... 35°C |
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Ambient temperature: |
0 ... 50°C |
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Contact rating: |
8A 230Vac |
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Dimensions: |
84 x 84 x 30mm |
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Temperature sensor: |
NTC 10K Ohm @ 25°C |
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Switching di erential: |
Adjustable from 0.2/0.4/0.6/0.8/1.0˚C |
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Frost protection: |
Only operational in stand by mode |
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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: |
1. Recessed conduit boxes |
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2. Surface mounting boxes |
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3. Directly on walls. |
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.
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 
5. Wiring diagram
INTERNAL WIRING DIAGRAM CDT2 |
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3 |
2 |
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1 |
L |
N |
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ON |
COM OFF |
MAINS |
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SUPPLY |
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If mains voltage output is required, terminals L & 2 must be electrically linked.
6. Frost protection |
5°C |
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
Heating ON symbol
Room temperature
Reset button
On / Standby button 
Set point increase 
Set point decrease
Set button
8. Resetting the thermostat
It is necessary to reset the thermostat prior to initial use. Press and hold the Set button for 5 seconds.
dEL will appear on the screen.
Press the 
RESET button on the side of the thermostat.
9. Adjusting the setpoint temperature
Press the 
or 
buttons to adjust the temperature setpoint.
EPH Controls Ireland |
EPH Controls UK |
sales@ephcontrols.com www.ephcontrols.com |
sales@ephcontrols.co.uk www.ephcontrols.co.uk |
20180116__CDT2-Hardwired_OpIns_JW
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