Technical data

104
CTC EcoZenith i550 Pro
For the installer
16.2 Heat pump power supply
16.3 Communication between the
EcoZenith and CTC EcoAir/
CTCEcoPart
The communication cable used is an LiYCY (TP) which is 4-conductor
shielded cable, where the communication-bearing conductors are of twisted
pair type. This should be installed between the terminal blocks in the
EcoZenith: G51 (Brown), G52 (White), G53 (Green) and heat pump A1, from
which the other heat pumps can be connected in series.
16.4 Low voltage 230V /400V (Heavy
current)
Supply
400 V 3N ~ 50 Hz and protective earth
The size of the group fuse is given in the Technical data chapter in the
section for the property owner.
Connected to the blocks marked L1, L2, L3, N, PE
Max thermostat
If the heat pump has been stored in an extremely cold place, the max
thermostat may have been triggered. It is reset by pressing in the button on
the thermostat behind the front panel.
Always check on installation that the max thermostat has not tripped.
Alarm 1-pole alternating relay (Output for alarm to an external unit)
230 V 1N ~
Connected to the circuit card:
ALARM
NC
NO
!
NB: The heat pump is powered separately.
Not from the CTC EcoZenith i550 Pro.
Detailed illustration from wiring
diagram