Technical data

12
ALPHA700
Index
CH1 1st Stage hours run meter
CH2 2nd Stage hours run meter
F1 6,3 AT protection fuse
TR1 1st Stage control thermostat
TR2 2nd Stage control thermostat
TS Limit thermostat
VM1 1st Stage indicator lamp
VM2 2nd Stage indicator lamp
VMT Power "ON" light
VSB Burner lockout lamp
VSC Boiler overheat lamp
ZB Burner ON/OFF switch
ZP Pump switch
ZT Test switch
Important: Maximum current that can switched per output is
2A (cos. o,7) which corresponds to an output of about 400W.
Provide a contractor relay for any output above that value.
Cable Colour Identification
R Red
O Orange
GY Gray
Y Yellow
BK Black
V Violet
G Green
B Blue
W White
BW Brown
Y/G Yellow/Green
Blue wire: N Neutral
Yellow/Green: Earth
Remove link D - G and install volt free contact to achieve
remote external on/off control
Remove link x-y and install volt free contact to achieve
remote high / low control - As appropriate and for high / low
burners only.
Y/G
O
R
B
BK
Y
Y
R
W
R
O
O
BK
BK
BK
B
B
B
1
2
3
3
1
2
BW G
B
B
G
G
WB
B
BW
W
GY
W
BK
R
Y/G
DG ENJ K L N FH
A1
A X Y B4 S3 T2 T1 N L1 N T8 T7
T6
B5
B
4
x7 x4
S
3
T
2
T
1
N L
1
T
8
T
7
T
6
B
5
Burner Cables
Casing
Panel
ZTZBZP
TSTR2TR1
CH1
VSB VM1 VM2 VSC VMT F1
CH2
Satety Interlock contacts
Phase
Neutral
Boiler Pump (if required)
2nd Stage External Control 1st Stage / on-off External Control
Power supply
240V-50 Hz
Burner Connection Plugs
hh
Notes:
Standard Boiler Control Panel Electrical Diagram