Technical data

70
CTC EcoZenith i250
Installation
Heat pump power supply.
The black connector
that only supplies any
connected heat pumps with
power is connected here.
Connection to display.
Terminal block: G41-G48.
Charge pump PWM:
G45-G46
Terminal block: G31-G40.
Return sensor: G31-G32
Extra VV/Night reduction: G33-G34
Current sensor: G37-G40
14.3 Positioning of electrical components
Electrical installation
CTC EcoZenith i250
L1 - 3x400 V/(1x230 V)
L2 - 3x400 V
L3 - 3x400 V
N
PE
Backup heating thermostat.
Terminal block: G11-G22.
Outdoor sensor: G11-G12
Primary flow sensor 1: G13-G14
Primary flow sensor 2: G15-G16
Room sensor 1: G17-G19
Room sensor 2: G20-G22
Terminal block: A11-A20.
Charge pump 1: A12
Mixing valve 2: A15-A17
Diverting valves VV: A18-A20
Terminal block: A21-A30.
Mixing valve 1: A27-A29
Max. thermostat.
Automatic circuit breakers.
Lower immersion heater.
Upper immersion heater.
Strain reliever.
Communication HP.
Terminal block: G51-G53
Brown cable: G51
White cable: G52
Green cable: G53
Contactors.
Terminal block: G61–G76.