36
Instruction for the installer
MDV
2
3
1
SS
YE
L
/G
R
EE
N
Y
E
L
/G
R
EEN
LIG
H
T
B
L
U
E
VG
TL
DK
WH
IT
E
BR
O
W
N
LI
G
H
T
B
L
U
E
P
230 V-50 Hz
E.ACC./RIL.
SE
OT
TA
A14
A15
BL
A
C
K
BL
AC
K
WH
IT
E
WH
IT
E
YE
L
L
O
W
YE
L
L
O
W
BLACK
A7
A16
A18
A17
LI
G
H
T
B
L
U
E
BR
O
W
N
YEL
/G
R
E
E
N
N
L1
BR
O
W
N
LI
G
H
T
B
L
U
E
BR
O
W
N
RE
D
(CH)
WH
IT
E
(D
HW
)
GR
E
E
N
VM
5
2
4
1
BROWN(PWM)
BLUE (TACHO)
BLACK
ORANGE
1
2
3
YEL/GREEN
LIGHT BLUE
BROWN
A13
LIG
H
T
B
L
U
E
T5
RE
D
A12
RED
RED
SRR
GREEN
GREEN
SR
WHITE
WHITE
BL
A
C
K
FL
WH
IT
E
JP1
FUNCTIONAL FLOW WIRING DIAGRAM
ALKON 09 C 18 - C 24
A7...A18
=
Connectors
DK
=
Safety pressure switch against lack of water
E. ACC./RIL. =
Combined ignition/ionisation electrode
FL
=
Minimum flow switch
MVD
=
Motor of Diverting Valve
P
=
Circulating pump
SR
=
Heating flow temperature sensor
SRR
=
Heating return temperature sensor
SS
=
D.H.W. temperature sensor
TL
=
Limit thermostat
VG
=
Gas valve
VM
=
Modulating fan
SE
=
Terminals for outer temperature sensor
O T
=
Terminals for Modulating Room Thermostat
(REGOLAFACILE)
TA
=
Terminals for ON-OFF Room Thermostat
Note:
The figures shown on the above wiring
diagram are purely indicative
JP1:
selection type of gas: NATURAL - GPL
Jp1
GPL
NATURAL
Summary of Contents for ALKON R 18
Page 1: ...ALKON 09 R 18 C 18 R 24 C 24 00333176 2nd edition 10 2011 INSTALLATION AND SERVICING MANUAL...
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