J4
RS485
J2
NC
NO
IN
J1
L1
K2
K1
L2/N
K4
K3
FUSE
FUSE
TRANSFORMER
J3
OVERHEA
T
CIRCULA
TION
PUMP
FLOW
SWITCH
TEMP
.SENSOR
{
{
{
{
Control
circuit board
www.pahlen.com
Midi Heat Digital ( 3~ 220-240V )
Electric heater with electronic thermostat
18-60kW
K1B
K2B
K3B
K4B
K1A
K2A
K3A
K4A
H2
H3
H4
L1
10mm²
10mm²
10mm²
10mm²
10mm²
10mm²
10mm²
10mm²
10mm²
10mm²
10mm²
L2/N
E10071-7
2019-02-12 ASA
3~ 220V- 230V
3~ 220V- 230V
3~ 220V-230V
3~ 220V-230V
P2:
P1:
1
2
L1
N
M
A1
13
14
A1
A1
A1
A1
A1
A1
A1
A2
A2
A2
A2
A2
A2
A2
A2
L1
L2
L3
M
Flow
switch
+45°
T
emp.
sensor
pool
F1
F2
F3
F4
L1
L1
L1
L1
L2
L2
L2
L2
L3
L3
L3
L3
Assembly drawing
(tank)
H3
H4
H2
H1
min.
0,75mm²
0,75mm²
H1
Overheating
limit control
2
1
External contactor
1-phase
Note: Just signal circuit (5VDC)
Note: Just signal circuit (5VDC)
External contactor
3-phase
L1
L1
L1
L1
L2
L2
L2
L2
L3
L3
L3
L3
Pump circulation
OR
BK
BK
OR
GY
BR
WH
GN
BU
YL/GN
YL/GN
YL/GN
10mm²
YL/GN
4mm²
YL/GN
YL/GN
BK
BR
WH
BK
BR
WH
BK
BR
WH
BK
BR
WH
mm²
*
BK
BR
WH
mm²
*
mm²
*
mm²
*
BK
BR
WH
mm²
*
mm²
*
mm²
*
YL/GN
mm²
*
YL/GN
mm²
*
mm²
*
BK
BR
WH
mm²
*
mm²
*
mm²
*
BK
BR
WH
mm²
*
mm²
*
GN
BK
YL
YL
4mm²
4mm²
YL/GN
mm²
*
BK
L1
F5
5-10A
S1
L2
~220-240V
Cable colours
BU = blue
BR = brown
BK = black
GN = green
GY = grå
OR = orange
YL = yellow
WH = white
BR
3
Pressostat
1
P
2
H =heating element
380–415V 3N~
18-72kW
Flow switch
Location drawing
Tank
External contactor
1-phase
External contactor
3-phase
Over heating
limit control
H1
H2
H3
H4
Circulation pump
Only the signal circuit (5VDC)
NOTE!
Only the signal circuit
(5VDC)
Transformer
Fuse
Pink
Blue
أبي
Pink
White
Pink
Blue
Blue
Pink
Blue
Blue
Blue
Cable colours
BK = Black
BR = Brown
BU = Blue
GN = Green
GY = Gray
OR = Orange
WH = White
YL = Yellow
NOTE!
Pressure
guard
H = heating element
30
