8.1
ILLUSTRATED WIRING DIAGRAM
8 WIRING DIAGRAM
Alpha E-Tec Hybrid - Wiring Diagram
Colour Code
Bk
......
Blac
k
Bl
.......
Blue
Br
.......
Bro
wn
G
........
Green
Gy
......
Gre
y
G/Y
....
Green/Y
ello
w
Or
.......
Or
ange
P
........
Pur
ple
R
........
Red
V
........
Violet
W
.......
White
Y
........
Yello
w
S4
............
DHW flo
w s
witch
S5
............
System pressure s
witch
T1
............
Ignition tr
ansf
or
mer
Y1
............
Gas v
alv
e
1
..............
Engineers palmtop connection
2
..............
Fr
ame ear
th
3
..............
Output rela
y
R
OOM
THERMOST
A
T CONTR
OL P
ANEL
The connection of the Smar
tech receiv
er unit (A30) is required
for the Alpha heat pump to oper
ate
.
Component identification
A23
..........
Alpha outdoor heat pump
A30
..........
Smar
tech receiv
er unit
B1
............
Flo
w sensor
B2
............
DHW sensor
B5
............
Retur
n sensor
B9
............
DHW inlet sensor (optional)
B10
..........
Flue sensor
E3
............
Ignition and detection electrode
M1
............
Boiler pump
M20
..........
Fa
n
M30
..........
3-w
ay v
alv
e motor
R
..............
120 Ohm resistor
Low voltage
connections
230
V
connections
B2
S4
1
G
GY
GY
G
Fuse
3.15
AF
230
V
-Vcc
HS
+UB
GND
+Vcc
M2
0
Bl
W
R
Bk
Br
Br
R
Bl
W
Bk
1
5
J3
6
1
9
1
X1
X6
X5
7
1
T1
J2
4
1
J1
3
1
Bl
Br
Bk
Bl
Y
Or
Br
X3
4
1
X9
4
1
Bk
Y
Br
X2
1
5
Gy
Gy
G
G
Bl
X4
1
6
Y
Y
R
Bk
Or
Y1
W
P
M3
0
B1
B5
B1
0
A23
A3
0
S5
P
P
R
W
R
W
Or
Or
G/Y
G/Y
B9
R
Or
Y
Bk
Y
W
Bl
Y
44
41
25
24
38
48
For testing
only
Bk
Bl
R
Br
2
E3
XF1
X16
X10
R
R
W
W
W
P
P
P
Or
Or
Bl
R
Br
Bk
Y
Br
PWM
GND
FEED
L
N
Br
G/Y
Bl
Y
Bk
Br
M1
Y
R
Br
Br
Bk
Bl
M
D-
D+
3
Or
G/
Y
Bk
Bl
Br
G/Y
Br
Bl
G/Y
L
N
A
B
1
2
5
6
Bk
Bl
Bl
Y
L
N
Mains Supply
230 V ~ 50 Hz
X3 D-
X3 D+
X2 OT
X2 OT
X1
X1
R
B
U
S
C
L
O
U
D
P
W
R
B
L
E
R
E
S
E
T
35