INSTALLATION
10
WIRING THE APPLIANCE
The whole of the electrical installation shall be
installed by a competent person fully in accordance
with the latest edition of the Requirements for
Electrical Installations BS 7671.
The PulsaCoil III is pre-wired back to a wiring centre
(see Figure 3.2) and a plumber should be able to
connect the appliance provided they adhere strictly
to the recommendations and the IEE Regulations.
However, do not attempt the electrical work unless
you are competent to carry it out to these standards.
Before commencing, ensure that all the power sources
to which the PulsaCoil III is to be connected are
isolated and properly earthed.
See Figure 3.2 for details of the wiring within the
appliance.
Connect the external wiring as follows
1 .
Remove the white cover plate (4 screws) and
run the external wiring through the grommets
provided in the fixed white panel at the base of
the appliance.
2 .
From the 3A fused and switched connection,
wire the mains power supply to the control circuit
terminal block as follows:-
Live to terminal 1
Neutral to terminal 2
Earth to terminal 3
3.
From the Ecomony 7 controller (or separate 20A
fuse and switch connections), wire the mains power supply
to the immersion heater terminal block as follows:-
Unrestricted (on peak) live to terminal 5 (L1)
Unrestricted neutral to terminal 6
Unrestricted earth to terminal 7
Off peak live to terminal 8 (L2)
Off peak neutral to terminal 9
Off peak earth to terminal 10
4 .
When the wiring is complete replace the front
white cover plate (4 screws).
...
Figure 3.2 Wiring Details
...
.
..
1
2
3
4
5
6
9
7
8
10
E N
L
IMMERSION
HEATER 2
PULSACOIL III
FLOAT SWITCH
OVERHEAT
SWITCH
FLOAT
SWITCH
NEON
O/HEAT
SWITCH
NEON
Pump
Mains
Sensors
Flow
Switch
-
-
+
+
D
NL
L
N
PUMP
SPEED
CONTROL
BOARD
FLOW SWITCH
PHE RETURN
SENSOR
HW OUTPUT
SENSOR
DHW PUMP
E
L
N
EARTH
STUD
L
N E
IMMERSION
HEATER 1
1.5mm
2
1.5mm
2
ISSUE 7 APPROVED JAN 01
1
2
3
4
5
7
8
9
10
11
12
3
1
6
4
9
7
A1
A2
Com
No
No
Nc
Nc
Com
Coil
Com
A1
7
9
A2
4
1
3
6
Com
T2
Mains supply
Fused 3 Amps
Mains supply
Fused 15 - 16 Amps each element
L1 = On Peak - 1 x 15 Amp
L2 = Off Peak - 1 x 15 Amp
L
N
E
L1 N1 E1 L2 N2 E2
BLA
BLA
BLA
BLA
BLA
RED
BR
BR
BR
BR
BR
BR
G/Y
G/Y
G/Y
G/Y
G/Y
BL
BL
BL
BL
BL
BL
BL
BL
BR
G/Y
