Sime ALU HE, User, Installation And Servicing Instructions

Page: 77 / 100

77
EN
5.12 Electrical connections
Sime ALU HE
boilers require the connections given below which
must be carried out by the installer or by professionally qualified
personnel. Some of the cabling is to the MC terminal board and
some to the electronic circuit board connectors.
To access the MC terminal board:
– take off the top panel (1) to access the electronic circuit board
– take off the front panel (2)
– undo the screws (3) that attach the control panel and rotate
it forward
– undo the screws on the back of the control panel and take off
the cover (4).
The cables must go into the back of the boiler and must be
locked when the job is completed with the tear-proof cable clip
that's already fitted. Once the connections have been made,
reassemble what was previously dismantled.
1
2
b
d
3
4
a
c
Fig. 24
Connections to be made by the installer
L
N
PE
Pc
p
N
PE
AC
S
N2
RISc
N3
SF
SF1
PC
PC1
GND
PWM
MC
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
230 V
50 Hz
Pcp
L N
PM VD
SRF
PB
VG
1
PM
Fig. 25
KEY:
MCP Primary circuit pump (4A - 230V)
L Line
N Neutral
PB Tank pump (4A - 230V)
PM Modulating pump (4A - 230V)
VD Diverter valve
PWM-GND Modulation for modulating pump (if present)
SF-SF1 Flue gas damper consent (Max 4A - 230V)
PC-PC1 Connections for pump operating signal
SRF Flue gas damper
Connections to electronic circuit board
BLU
CN2 CN3
CN4
CN5
CN6
CN7
CN9
CN14
CN13
CN12
49 50 58
1 1
2
3
4
5
6
7
8
9
10
4
5
N
L
6
7
10
69
72
11 17
18
F1
JP1
F2
BLU MARRONE
TA1 230V
N
AR
VZ
N
AUX
L
AUX
L
VZ
AR
11 12 13 14 16 16 17
SB/SA
TS
SE
TA1
TA2
0...10VDC
CR
KA
VD2
KA
VD1
Fig. 26
KEY:
L Line
N Neutral
SE External sensor
CR Remote control (instead of air thermostat)
SB/SA Storage tank sensor or auxiliary sensor
TA1-TA2 Air thermostat
JP1 Dial jumper or 0...10V DC or TA2 (**)
AUX Auxiliary connection
VZ Zone valve
TA1 (230V) Air thermostat
AR Remote alarm
(**) JP1 engaged = TA2 usable; 0 ... 10V DC not usable; JP1
disengaged = TA2 not usable; 0 ... 10V DC usable
m
WARNINGS
It is compulsory:
– to use an omnipolar cut-off switch, disconnect
switch, in compliance with EN standards (contact
opening of at least 3 mm)
– to respect connection L (Live) - N (Neutral)
– to refer to the electrical diagrams in this manual for
any electrical intervention
– to connect the earth wire to an effective earthing
system (*).
d
IT IS FORBIDDEN
– to use cables with a cross-section of less than 1 mm
2
– to use the water pipes to earth the appliance.
(*) The manufacturer is not responsible for any damage
caused by failure to earth the appliance or failure to
observe the information provided in the wiring diagrams.