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Page 11
SY
STEM DET
AILS
DESIGN
Electrical Installation
The Schematic arrangement of the wiring within
the PulsaCoil A-Class is shown above.
The whole of the electrical installation shall be
designed and installed by a competent person
fully in accordance with the latest edition of
the Requirements for Electrical installations
BS 7671.
The PulsaCoil A-Class appliance is provided with
two side entry 3kW immersion heaters and has
been designed to generally operate with an off
peak supply.
The lower immersion heater heats the whole of
the contents and is normally connected to the
off peak supply.
The upper immersion heater is positioned at a
level on the PulsaCoil A-Class to heat the top 65
- 75 litres of the store - see Technical Data Table
on page 5. This is connected to the unrestricted
on peak supply and is switched manually by
the householder using the button provided on
the front of the appliance. When pressed the
on-peak boost will remain active until the next
time the off-peak becomes available (unless
switched off again manually).
The size of the appliance and the need to use
the on peak boost facility is reduced if a better
off peak tariff can be agreed with the electrical
supply company - see Model Selection Guide
on page 5.
Wiring The PulsaCoil With A Split Consumer
Unit I.e. Separate On And Off Peak Supplies.
Historically this has been the typical supply
method and no special wiring arrangements
are required.
C2
C1
DHW
Pump
L
N
E
L
N
E
ON PEAK
230V, 50Hz
15A
OFF PEAK
230V, 50Hz
15A
Immersion
(Off Peak)
Immersion
(On Peak)
C1 and C2 : Contactors
PulsaCoil A-Class Schematic Wiring Diagram
DHW Outlet Sensor
PHE Inlet Sensor
Control for Off-Peak I.H.
Control for On-Peak I.H.
Store Overheat Sensor
ON
OFF
ON
OFF
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
B16
Off Peak
Element
ON
OFF
20 Amp
MCB
B16
MCB
On Peak
Element
20 Amp
Double Pole
Isolator
Double Pole
Isolator
METER
Twin Tariff Restricted Off Peak Connections
Twin Tariff Consumer Only
RESTRICTED
OFF PEAK
SUPPLY
24 HOUR
DOMESTIC
SUPPLY
Control
Supply
ON PEAK 3KW
OFF PEAK 3KW
Installer
Terminals
Installer
Terminals
Rate1
Rate 2
Boost
Control
Содержание PulsaCoil 145
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