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9
INSTALLATION
E-T
ech `S` T
ri Phase Control Circuit - With shunt circuit (f
actor
y wired)
CABLE COLOUR CODES
bk- black
br
- br
own
r-
re
d
w-white
y- yellow
o - orange
b - blue
v - violet
p - pink
gr - gr
ey
All bold numbers indicate a DIN rail ter
minal 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 Of
f
Switch
High T
e
mp
Limit
(manual r
eset)
W
ater
Pr
essur
e
Switch
Optional
Inter
nal Or
Exter
nal
Boiler Contr
ol
Clock
High T
e
mp
Limit
(Auto Reset)
Boiler Stat
(85 - 60°C)
Panel
Stage 1
Switch
Panel
Stage 2
Switch
Optional Inter
nal -
Exter
nal Clock Supply
Cir
culating
Pump
Stage 1
Power
Relay 1
Stage 1
Power
Relay 2
Stage 2
Power
Relay 1
Stage 2
Power
Relay 2
Stage 1
Delay
Timer
Heating V
alve
(Not Supplied)
Panel
Heating
Switch
Switch
Indicator
Switch
Indicator
Switch
Indicator
Remove Link If
Option Used
Optional
Exter
nal Heating
Clock or Stat
Switch
Indicator
Lockout
Indicator
Remove Link If
Clock Used
1
3
4
56
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
r
br
br
v
r
r
o
o
w
o
w
o
r
w
pg
r
w
o
y
w
v
r
y
r
r
r
o
21
bk
b
b
b
b
b
b
b
b
M
C
1
2
20
o
16
w
17
r
y
A2
A1
r
b
bk
Stage 2
Delay
Timer