801
28
16
Fan
32
Central heating pump
34
C.H. flow temperature sensor
42
D.H.W. temperatuure sensor
43
Air pressure switch
46
Operator gas valve
47
Modulating regulator
(MODUREG) gas valve
49
Overheat cut-off thermostat
50
Heat exchan. limit thermostat
51
Heat exchan. frost thermostat
61
C.H. selector switch
62
Time clock (not fitted)
63
C.H. boiler thermostat
68
Control box with P.C.B.
12
1
TR1
X4
X6
2
3
4
X2
RY1
X1
2AT
230V
50Hz
1
11 10
7
2
6
3
5
12
9
10
1
2
P1
X3
6
5
3
4
1
F1
9 8 7 6 5 4 3 2 1
X8
1
2
3
4
5
6
7
8
9
X5
1
2
X7
JP4
13
L7
RY2
RY4
JP1
P2
SHORT CIRCUIT 12-13
- BOILER STARTS FOR C.H.
- WAITING TIME IS EXCLUDED
- MAX BURNER PRESSURE C.H.
CAN BE CHEDKED/SET WITH P1
A D.H.W. FLOW-
SWITCH (ON-OFF) CAN
BE CONNECTED TO
TERMINALS 1 AND 3
CONNECTOR X2
CONNECTOR X3
CONNECTOR X7
1-2 = 230 V
61.
C.H. selector switch
Heating timed
and hot water
Hot water only
Heating
continuous and
hot water
72
Room thermostat (not fitted)
80
Five pole terminal 240V + 24V
81
spark electrode
82
Flame sensing electrode
83
Automatic ignition control panel
84
1. gas valve operator
85
2. gas valve operator
86
automatic control reset knob
101
P.C.B.
114
Low water pressure switch
136
Flowmeter
145
C.H. pressure switch
157
D.H.W. thermostat
164
Fault diagnostic/temperature control panel
JP1
Is not required
JP4
Is not required
NOTE:
THE TRANSFORMER ON THE P.C.B. HAS A BUILT-IN
OVERHEAT PROTECTION.
IF THIS IS OPEN, ALL LED'S WILL BE OFF BUT THE C.H. PUMP
(32) WILL RUN
SWITCH OFF THE BOILER FOR AT LEAST
20 MINUTES
X6
12
14
7
6
5
2
13
1
3
81
8
X3
X4
X5
9
82
1
129
3
83
4
2
49
84
85
43
47
32
12
8
16
+
42
VMF7
X5
5 4
2 1
3
80
L
N
230V
24 V
11
230V ~ 50 Hz.
X1
10
OUT
9
136
4 3
34
8 7 6
1
1
2
3
1
2
5
2 1
4
13
7
2
6
1
3
5
9
10
12
6
X2
X4
X7
X3
X6
1
9
7
2
6
51
-
5
2
8
4 3
1
80
5
b
a
d
2
4
4
5
M
24V
72
1
2
3
50
114
X8
LD2
63
157
8
1
L6
L5
L4
L3
L2
L1
X1
P1
= C.H. max. output
P2
= D.H.W. temperature (factory set)
JP1 and JP4:
Jumpers
