OCS4 Central Controller

Comfort System 4™ offers maximum comfort in all areas, from installation through operation to servicing.

Notice: Discontinued product

Documents FAQ

OCS4-10Maximum comfort - from installation to operation

Comfort System 4™ offers maximum comfort in all areas, from installation through operation to servicing. It ensures minimum energy consumption by intelligent radio controlled thermostats following a group’s 4-event programme.
The wireless controller and thermostats are recommended for controlling multi-room heating systems with up to 16 rooms.
Green Comfort – Save up to 36% CO2

  • Remote access via Gateway
  • Saves at least 20% energy
  • Easy read-out of energy costs
  • Easy set-up – 5 built-in schedules ready for use
  • Just 20mm deep, wireless installation and snap mounting of front cover
  • Automatic daylight saving times and battery backup of clock and calendar
  • Easy, animated menu navigation and programming
  • Innovative – ready for external SMS modem control

Product Documents

Product Sheets
Product Sheet, OCS4, English
File type/size:PDF ( 407.19 KB )
Product Sheet, OCS4, German
File type/size:PDF ( 487.01 KB )
Product Sheet, OCS4, Portuguese
File type/size:PDF ( 548.04 KB )
Product Sheet, OCS4, Russian
File type/size:PDF ( 550.12 KB )
User Manuals
User Manual, OCS4 / OSA4 / MCS4 / MSA4, English
File type/size:PDF ( 5.57 MB )
Instructions, OCS4 / MCS4, English
File type/size:PDF ( 1.01 MB )

Product FAQ

Where to connect the ground wire of floor mats?

The ground wire in the floor mat must be connected directly to the ground wire of the supply.

What is the recommended night setback?

The recommended night setback is max 5°C/41°F

Does the adaptive function reset when making a factory reset?

Yes the adaptive function is reset during a factory reset.

What is the maximum length of the sensor cable?

In general, it is recommended that the maximum sensor cable length should be 164 feet/50 meters, the length might be shorter. Read the instructions for the precise maximum length.

How can I cure the E2 error message?

"E2" means defective, damaged or disconnected floor sensor. Sensor resistance should be 10 or 12 kOhm at 25°C (77°F). The onstruction or quick guide holds informatiom for the specific thermostats.


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