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Celcia 20 is a digital clock thermostat and weather
compensator for controlling the room temperature. This
document describes its main functions and is sufficient for the
majority of its uses.
A special document for advanced use has been written for the
installer. You can download this from our Internet site,
uk.remeha.com, or order it separately from us.
2.1 Mounting location
If you are using Celcia 20 as a clock thermostat or as a wea-
ther compensator with room temperature compensation,
mount it in a reference room, such as the living room at 1.5 m
above floor level.
Choose an internal wall for this, where the air can circulate
freely.
Do not mount Celcia 20 above a heat source such as a candle,
TV or radiator.
This affects its proper working.
Fig. 1 Photo of the controller with open lid and designation of the buttons
Fig. 2 Drawing of the base plate and the position of the terminals
1. Foreword
2. Mounting and putting into operation
OT-BUS
DIGI
rotary knob
plus/min
reset
Info
OK
Escape
ENGLISH
