Connecting The Electrical Circuits - Baxi MK SYSTEM Installation, User And Service Manual

6.3.2

Connecting the electrical circuits

Fig.21 Connection with an outdoor unit AURIGA M/T-A
CB-05
DIFF DISJ
Typ A Typ C
230V
30 mA 10A
~
EHC Indoor unit EHC-14 PCB
T out Terminal block for outdoor temperature sensor
DIF* Residual current circuit breaker (RCCB)
7856310 - v02 - 21122023
1 2 3 4 5 6 7 8 9 10 11 12 13 1415
3 x 0,75 mm²
A B A B A B A B X Y E
P Q E P Q E P Q E P Q E P Q E P Q E P Q E P Q E P Q E P Q E P Q E P Q E
BUS
EHC
Tout
16 17 18 19 20 21 22 23 24 25 26 27 28 29
E X Y
3 x 0,75 mm²
shielded
H1 H1 H2
Type C Protection circuit breaker
shielded Shielded cable
BUS Outdoor unit X/Y/E connection terminal block
Important
The cable cross-sections are given as a guide only.
Use a shielded cable for the BUS connection between the indoor
unit and the outdoor unit to avoid communication problems.
2 x 0,35 mm²
< 30 m
< 15 m
6 Installation
17