Technical data

71
CTC EcoZenith i250
Installation
14.4 Electrical connection to heat pump
General
The CTCEcoAir406-410 or CTCEcoPart406-412 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.
14.4.1 Communication
The CTCEcoAir406-410, 520M or CTCEcoPart406-412 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.
The detailed illustration from
the wiring diagram shows the
communication connection.
Charge pump Molex switch
Charge pump PWM switch
Connection
communication.
G51, G52, G53
EcoZenith connection box
CTC EcoAir
Grey communication connector.
CTC EcoPart
Communication terminal
block.