Technical data

74
CTC EcoZenith i250
Installation
14.3 Component list, wiring diagram
No. Component. Terminal block no.
A1 Display
A2 Relay/main card
B1 Primary flow sensor 1 G13, G14
B2 Primary flow sensor 2 G15, G16
B5 Upper tank sensor G63, G64
B6 Lower tank sensor G67, G68
B7 Return sensor G31, G31
B11 Indoor sensor 1 G17, G18, G19
B12 Indoor sensor 2 G20, G21, G22
B15 Outdoor sensor G11, G12
COM HP Communication heat pump G51 = Brown cable, G52 = white cable, G53 = green cable.
E13 Backup heating thermostat E13
F1 Automatic circuit breaker 10 A
F2 Automatic circuit breaker HP 10
A
F10 Max. thermostat
G1 Radiator pump 1 A31, A33, PE
G2 Radiator pump 2 A34, A36, PE
G11 Charge pump 1
K1 Contactor 1
K2 Contactor 2
K19 Pressure/level switch G73, G74
K20 Night red/circulation/extra DHW G33, G34
X1 Terminal block, incoming supply L1, L2, L3, N, PE
X10 Terminal block, HP supply Black connector
Y1 Mixing valve 1 A27, A28, A29
Y2 Mixing valve 2 A15, A16, A17
Y21 Diverting valve DHW A18, A19, A20
Y22 Diverting valve DHW A18, A19, A20