Unical ALKON 50 kW - Practical Connection Diagrams

33
Instructions for the installer
3.18 - ACTUAL WIRING DIAGRAM for ALKON 50
E. ACC = Ignition electrode
E. RIV. = Detection electrode
DK = Minimum water pressure switch
SR = CH sensor
SRR = CH return sensor
SS = DHW sensor (optional)
TL = Limit thermostat
TF = Smoke thermostat (only pre-arrangement)
VG = Gas valve
VM = Modulating fan detection/adjustment
Note: The pictures shown on the actual
wiring diagram, is purely indicative.
21
VM
ORANGE +
BLACK (-)
BROWN (PWM) BLUE (TACHO)
4
5
LIGHT-BLUE (N)
12
BROWN (L1)
3
RIL./REG.
ALIM.
230V
SRR
SR
BROWN
BROWN
BLUE
YELL/GREEN
L1N
230 V - 50 Hz
GREEN
GREEN
WHITE
WHITE
LIGHT-BLUE
LIGHT-BLUE BROWN
VG
E. ACC
LIGHT-BLUE BROWN
YELL/GREEN
RED
TL
TF
BLACK
SS
E. RIV.
WHITE
BLACK
DK
WHITE
BROWN
LIGHT-BLUE
BLUE
LIGHT-BLUE
LIGHT-BLUE BROWN BROWN
Fs1
NERO BLU MA R RO N E
ARANCI O
BROWN
Prearrangement for the
connection of the
additional safety devices
LIGHT-BLUE
LIGHT-BLUE