gledhill PulsaCoil 145, Инструкции по проектированию, установке и обслуживанию

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Page 18
Cold feed / open vent
pipework
(as supplied)
Interconnecting
Pipework
(By Installer)
Figure 1.7
PulsaCoil
Electrical Connection - Standard Appliance
The PulsaCoil A-Class is pre-wired internally,
strictly in accordance with the IEE Requirements
for Electrical Installations BS 7671. The external
wiring/connections should be carried out by a
competent person to the same standard. The
arrangement of the internal wiring is shown on
the previous page.
All the terminals are suitably labelled.
Note: Do not attempt the electrical work unless
you are competent to carry it out to the above
standards.
Before commencing check that the power
source is in accordance with the Site
Requirements section of this manual and
ensure that it is isolated as shown in the System
Details section.
Run the external wiring from the adjacent
isolator through the service slot provided in the
base of the appliance.
Make the connections as shown below.
Clamp the cables in the grips provided and
ensure all cables are routed to avoid hot
surfaces.
Note: The appliance pipework should be bonded
to earth to comply with the IEE Requirements
for Electrical Installations BS 7671.
Before switching on the electrical supply check
all the factory made terminal connections to
ensure they have not become loose during
transit.
Combined Feed And Open Vent Pipe
It is normally envisaged that the top up cistern will be located in the same cupboard
as the PulsaCoil A-Class appliance itself to maintain a dry roof space.
The cold feed/open vent pipework assembly (as supplied) should be used to install
the top up cistern directly on top of the appliance.
If it is necessary to locate the cistern in the roof space (or on a higher fl oor) the cold
feed/open vent pipework assembly (as supplied) should be used to connect to the top
up cistern and pipework site run by the installler to connect this to the appliance.
Obviously, any pipework in the roof space and the feed and expansion cistern will
need to be adequately insulated to protect against frost damage.
Combined Feed And Open Pipe Arrangements Must Not Be Used.
No valves should be fi tted in the safety open vent which must be a minimum of 22mm
copper pipe or equivalent throughout its length.
The mains cold water supply to the ballvalve (if provided) shall be provided with a
suitable servicing valve.
The overfl ow/warning pipe (if provided) shall have a continuous fall, be fi tted to
discharge clear of the building and be sited so that any overfl ow can be easily observed.
It shall also be installed in a size and material suitable for use with heating feed and
expansion cisterns in accordance with BS 5449 (e.g 22mm copper) and should not
have any other connections to it.
Note: If a warning/overfl ow pipe is NOT provided the top up cistern should be
fi lled from a temporary hose connection supplied from any cold water tap or
from a permanent cold branch provided adjacent to the top up cistern. The
temporary hose must be fi tted with a double check valve and removed once
the appliance is fi lled.
The store may fi ll more slowly than the feed tank. It is important to check the
water level again in the cistern after commissioning.
ON
IH
L
ON
PEAK
L ON
PEAK
N ON
PEAK
PE ON
IH
N OFF
IH
L OFF
PEAK
L OFF
PEAK
N OFF
PEAK
PE OFF
IH
N
On Peak Supply
1.5mm Flex
2
Off Peak Supply
1.5mm Flex
2
L N E
L
N E
ON PEAK OFF PEAK
INSTALLATION
INST
ALL
A
TION