33
Instructions for the installer
WIRING DIAGRAM for
ALKON 70
21
BLACK (-)
BROWN (PWM)
BLUE (TACHO)
4
5
BLUE (N)
12
BROWN (L1)
3
RIL./REG.
ALIM.
120V
SRR
SR
BR
O
W
N
BR
O
W
N
BL
U
E
YE
L
L
/G
R
EE
N
E. RIV.
WH
IT
E
BLACK
DK
BR
O
W
N
BL
U
E
BL
U
E
BLUE
BROWN
Fs
1
BLACK
BLUE
BROWN
ORANGE
P
BL
U
E
BR
O
W
N
YELL-GREEN
GREEN
GREEN
WHITE
WHITE
WH
IT
E
BR
O
W
N
BLUE
BROWN
IG
VM
L1
N
120 V - 60 Hz
BL
U
E
-
N
BR
O
W
N
- L
E. ACC
TR. ACC
BLUE
BROWN
RED
YE
L
/GR
E
E
N
VG
YEL/GREEN
TL
TF
B
LA
C
K
1 (NC)
BL
U
E
PF
BROWN
3 ( C )
WHITE
BLUE
BL
U
E
CDS-1
YELL-GREEN
BR
O
W
N
BL
U
E
P
BOILER
SYSTEM
P SYST.
= Pump system
Note: Any accessories shown in the drawn
are not available for this model of boiler
= Minimum water pressure switch
= Ignition electrode
= Detection electrode
= Power switch On-Off
= Pump boiler
= CH sensor
= CH return sensor
= Limit thermostat
= Smoke thermostat (only pre-arrangement)
= Ignition transformer
= Gas valve
= Modulating fan detection/adjustment
DK
E. ACC
E. RIV.
IG
P
SR
SRR
TL
TF
TR.ACC
VG
VM
CSD - 1
Prearrangement for the
connection of the
additional safety devices
Label all wires prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation.
