Technical data

62
CTC EcoZenith i250
Installation
13.4 Electrical connection to heat pump
General
The CTC EcoAir 406-410 or CTC EcoPart 406-410 heat pumps receive their
power supply from the EcoZenith i250 via a separate connector.
Charge pump
The factory-installed charge pump for heat pumps is connected internally in the
CTC EcoZenith i250 L.
The charge pump is connected to CTC EcoZenith i250 H in the pre-
assembled connector (Molex and PWM) located under the electrical cabinet.
When working on the heat pump
Before starting any work on the heat pump the safety switch installed in front of
the CTC EcoZenith i250 should be activated.
13.4.1 Communication
The CTC EcoAir 406-410 or CTC EcoPart 406-410 heat pumps are controlled
from the EcoZenith i250. Other makes of heat pump cannot be controlled from
the EcoZenith. Communication between the products takes place via an LiYCY
(TP) communication cable, which is a 4-conductor shielded cable, where the
communication-bearing conductors are of twisted pair type. The connection
is made in the communication port on the PCB and in the heat pump in
accordance with its instruction manual.
G51 = Brown cable, G52 = white cable, G53 = green cable.
Grey communication connector.
The detailed illustration from
the wiring diagram shows the
communication connection.
Charge pump Molex switch
Charge pump PWM switch
Communication connection.
G51, G52, G53
Communication
terminal block.
CTC EcoAir 400 CTC EcoPart 400
EcoZenith connection box