Technical data

76
CTC EcoZenith i250
Installation
Symbol for backup heating
thermostat:
15. First start
When the CTC EcoZenith i250 is delivered, the heat pump is blocked to avoid it
being started unintentionally. EcoZenith I250 can be installed and started before
the bedrock/ground source or air/water heat pump is put into operation.
The EcoZenith i250 can also be started without a room sensor being fitted as
the curve which has been set then regulates the heating. Deselect the room
sensor in the Settings menu. The sensor can however always be fitted for the
alarm LED function.
Before first start
1. Check that the EcoZenith I250 and system are full of water and have been
bled.
(The EcoZenith i250 is bled through the safety valve on the top cover of the
product.)
2. Ensure that the brine system is filled with water and antifreeze and that it is
bled, or ensure that the compressor is blocked.
3. Check that all connections are tight.
4. Check that sensors and the radiator pump are connected to the power
source.
5. The backup heating thermostat has OFF as its factory setting. The recom-
mended position is
= Antifreeze setting, around +7°C. The backup heat-
ing thermostat is reset on the electrical switchboard behind the front panel.
It is in the OFF position when it is turned anticlockwise as far as it will go (the
screwdriver slot should be vertical).
NB: On installation in a newly built dwelling, the regulations of the Swedish
National Board of Housing, Building and Planning (Boverket) must be
adhered to when setting maximum power output. The installer must key in
the four figure code 8818 under the menu: Service/Factory settings coded,
within one week – this locks maximum power. The maximum power output
must also be written on the rating plate with a marker.
NB: At the end of the installation, check the current transformers’
connection. In this situation it is important that you have switched off
any major consumers of electricity in the house. Also make sure that the
backup thermostat is turned off.