DORCHESTER DR-FC 25, Installation, Commissioning And Maintenance Instructions

Page: 96 / 98

Appendices
96 Instruction Manual DR-FC
A
is
A.2 Electrical diagram
DR-FC
TERMINAL STRIP CONNECTIONS:
A
Earth
N Neutral
L
1
Phase input of controller
L
2
Phase input of isolating transformer (primary side)
L
3
Phase output of isolating transformer (secondary side)
L
4
Phase input of program-controlled pump
L
5
Phase input of continuous pump
COMPONENTS:
A Controller
B Flame probe
C Hot surface igniter
D Gas control valve
E Burner earth connection
F Extra ON mode switch
G Continuous pump
H Program-controlled pump
J Extra error signal
K Isolating transformer
L Double-pole local isolator
M ON/OFF switch control
N Display/Flat cable
O Fan
P Temperature sensor (T2 - bottom of heater)
Q Dummy
R Temperature sensor (T1 - top of heater)
S Selection resistor
T Pressure switch
CONTROLLER CONNECTIONS:
J2 Connector for power supply to controller
J19 Connector for extra error signal
J20 Connector for gas control
J21 Connector for program-controlled pump
J24 Connector for fan
J36 Connector for display to controller
JP2 Connector for flame probe and hot surface igniter
JP3 Connector for temperature sensor T2
JP4 Connector for dummy
JP5 Connector for temperature sensor T1
JP6 Connector for selection resistor and pressure switch
JP8 Connector for extra ON mode switch
F1 Fuse
F3 Fuse
Figure A.1 Electrical diagram DR-FC
E
2
2
4 4 3 1 4 4
F
1 2 3
N
4
L
5 6
z H 0 5 C A V 0 3 2
0 1 7 8 9
D
C
B
4 4 3
X X
0
I
M
4
4
XX
8 P J
9 2 J
X X X X
X X
2 1 P J
X X
6 P J
X
X
X
X
6
X
X
6
X
X
6
2 P J
X
9 1 J
1 2 J
X X
3
X X
X X X
X
2
X
1
3
X
X
X
4
4
X
X X
2
0 2 J
X
1
4
5 P J
4 P J
X
X
6
X
6
X
6
6
X
X
6
6
X
X
6
3 P J
1 1 P J
X
6
6
X
XX
XX
X
X
3 F
X
3
X
2
1 F
1
X 2 J
R
Q
P
4
4
4
1
2
3
O
T
6
6
2 1 1 1 6 1 5 1 4 1 3 1 9 1 8 1 4 2 0 2 7 1 2 2 1 2 3 2
N L
r i a m i r P
L N L N
r i a d n u c e S
N L
2
1
1 2
1
3 2 2 2 1 1 1 3 3 3
3 3 J
L N
K
L
J H G
A
S
4 5 1
3 2
8 3 J
7 3 J
X X
4 3 J
5 3 J
9 3 J
6 3 J
X X X
4 4
N
X X
4
X
2
1
3 1 2
1 2 3
1 2
3
4 2
1
5 1
6 2
3 7
8
4
5
1
5 1
6 1
2
1
4
1
2 5
6 3
6 1
4 2
3 1
7 1
1 2
9
7
5
3
1
1 1
3 1
5 1
0 1
4
2
8
6
6 1
2 1
4 1
7
1
6 2 4
5 3 1
5 1
1 3
2 4
= white (flat cable)
= grey/beige
= brown
= blue
= yellow/green
= black = brown