Unical ALKON 50 kW - Page 34

34
Instructions for the installer
ACTUAL WIRING DIAGRAM for ALKON 70
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
VG
E. ACC
GIA/VER
ROSSO
TL
TF
SS
E. RIV.
WHITE
BLACK
DK
BROWN
LIGHT-BLUE
BLUE
LIGHT-BLUE
BROWN
Fs1
BLACK BLUE BROWN
ORANGE
PM
LIGHT-BLUE
BROWN
YELL-GREEN
PINK
(
MODULATION
)
GREY
(
-
)
WHITE
GREEN
GREEN
WHITE WHITE
LIGHT-BLUE
BLACK
WHITE
BROWN
Prearrangement for the
connection of the
additional safety devices
LIGHT-BLUE
LIGHT-BLUE
LIGHT-BLUE
BROWN
BROWN LIGHT-BLUE
LIGHT-BLUE
BROWN
E. ACC = Ignition electrode
E. RIV. = Detection electrode
DK = Minimum water pressure switch
MDV = Motor 3 way valve
PM = Modulatin pump
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.