gledhill PulsaCoil PCBP 120, Design, Installation & Servicing Instructions

Page: 11 / 28

Page 11
Electrical Installation
The Schematic arrangement of the wiring
within the PulsaCoil BP is shown opposite.
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 BP 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 BP to heat the top 50 - 80
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 off -peak controller,
eg. Horstman Electronic 7 Controller.
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.
The typical wiring arrangement is shown
in figure 1.7. An economy 7 controller (eg
Horstman Electronic 7) is used for a manual
boost and automatic off -peak heating of hot
water.
If a factory fitted scale inhibitor has been
specifi ed, then it should be wired to a permanent
supply as shown in fi gure 1.8.
Figure 1.6
L
N
E
L
N
E
ON PEAK
230V, 50Hz
15A
OFF PEAK
230V, 50Hz
15A
Bottom
Immersion
(Off Peak)
Top
Immersion
(On Peak)
PulsaCoil BP Schematic Wiring Diagram
ON
OFF
ON ON ON
ON
ON
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
OFF OFF
MCB
B16
MCB
Hot
Water
METER
Typical Wiring - Twin Tariff Un-Restricted Off Peak Connections
24 HOUR
DOMESTIC
SUPPLY
ON PEAK 3KW
OFF PEAK 3KW
Installer
Terminal
Installer
Terminal
Rate1
Rate 2
Off Peak During
00:00 - 07:00 E7
Timer Programmed to Synchronized with
Off Peak Availabilty EG. 00:00 - 07:00 E7
Off peak
controller
2-pole
isolator
switch
Figure 1.7
Figure 1.8
2-pole isolator
switch fused at 3A
3 core flex
(0.7mm
2
minimum)
Scale
inhibitor PCB
Mains supply
230V, 50Hz
N
E
L
DESIGN
SYSTEM DETAILS