Specifications

8
INSTALLATION
ELECTRICAL CONNECTIONS
Control circuit power supply
The control circuit is automatically powered from the power circuit. It is
also protected by a magneto-thermal circuit breaker.
Control wiring diagram
It is important to switch the boiler off before
carrying out any work.
1
3
4
5
6
7
8
9
C
2
C
2.1. 2.2.
1.1. 1.2.
A1 A2
1
2
1
10 11
12 13
14 15
18
19
br
br
v
r
r
o
o
w
o
w
o
r
w
pgr
w
o
y
w
v
r
y
r
r
r
o
21
bk
b
b
b
b
b
b
b
b
C
1
2
20
o
bk
E-Tech `S` Single Phase Control Circuit - With shunt circuit (factory wired)
CABLE COLOUR CODES bk- black br- brown r-red w-white y- yellow o - orange b - blue v - violet p - pink gr - grey
All bold numbers indicate a DIN rail terminal connection
Boiler Stat (78 - 53°C)
PLEASE NOTE: Due to the potential risk of ELECTRIC SHOCK this section of the manual is intended for use by a service engineer or qualified electrician, not the user
230 - 240 V ac
3 amp MCB
Panel On Off Switch
High Temp Limit (manual reset)
Water Pressure Switch
Optional Internal Or External Boiler Control Clock
High Temp Limit (Auto Reset)
Boiler Stat (85 - 60°C)
Panel Stage 1 Switch Panel Stage 2 Switch
Optional Internal - External Clock Supply Circulating Pump
Stage 1 Power Relay 1
Stage 1 Power Relay 2 Stage 2 Power Relay 1
Stage 1 Delay Timer
Heating Valve (Not Supplied)
Panel Heating Switch
Switch Indicator
Switch Indicator
Switch Indicator
Remove Link If
Option Used
Optional External Heating Clock or Stat
M
Switch Indicator
Lockout Indicator
Remove Link If
Clock Used
r