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6.3 Electrical connections
In case of difficulty contact service support; contact
details are available on page 36 of this booklet.
WARNING
`
Disconnect from the mains electrical
supply before removing any covers.
`
Never attempt to replace the immersion
heater(s)
manufacturers
other manufacturers components may
invalidate the warranty on the cylinder.
`
DO NOT bypass the thermal cut-out(s) in
any circumstances. All electrical wiring
should be carried out by a competent
electrician and be in accordance with the
latest I.E.E Wiring Regulations.
`
Each circuit must be protected by a
suitable fuse and double pole isolating
switch with a contact separation of at
least 3mm in both poles.
`
DO NOT operate the immersion heaters
until the cylinder has been filled with
water.
`
The immersion heater(s) should be wired in
accordance with fig 4 and 5, page 10.
Space and heating systems controls
`
The controls provided with the cylinder will ensure
the safe operation of the unit within the central
heating system.
`
Connections to the various system components is
made via the wiring centre fitted to the front of the
cylinder and the terminal identification labels within
the wiring centre to aid in connecting the various
external system components such as the mains
supply, programmer and boiler.
Programmers and room temperature sensor
`
The programmers and room temperature sensor are
supplied loose such that they can be installed at a
convenient location within the property.
`
These items are supplied with their own installation
and user instruction leaflet which should be referred
to for details of mounting, wiring and programming.
`
Temperature setting of the room temperature is also
done at the programmer, there is no adjustment at
the room temperature sensor.
22
other
than
with
genuine
components.
Using
CAUTION
The room sensor is wired directly to the
programmer, not to the wiring centre.
Basic programmer features:-
`
24 hour or 5/2 day operation.
`
Room temperature setting at programmer.
`
Set temperature over-ride facility.
`
1 hour hot water boost facility.
`
Battery back up retains programmed information in
the event of a power interruption.
`
Low temperature set back option for periods when
the property is unoccupied, eg. holiday periods.
`
Independent time control of central heating and
domestic hot water (Building Regulation Part L1
compliant).
6.4 Filling the installation
`
Ensure the drain cock is CLOSED.
`
Open a hot tap furthest from the cylinder.
`
Open the isolating valve on the 3 bar pressure
reducing valve by turning the blue handle on the stop
cock (if fitted in this position) so that it lies parallel to
the direction of flow. Open the mains stop cock to fill
the unit. When water discharges from the tap, allow
`
to run for a few minutes to thoroughly flush through
any residue, dirt or swarf, then close the tap.
`
Open successive hot taps to purge the system of air.
WARNING
Should the Megaflo Eco be used in
conjunction with a boiler that controls the
water temperature via a sensor connected
to the boiler controls it should be noted that
the factory fitted indirect thermostat and
thermal cut-out MUST NOT be disconnected
or bypassed. To do so would invalidate the
product approvals and warranty and it
would not comply with Building Regulations.
Should this method of control be adopted
the Megaflo Eco Indirect thermostat should
be set at maximum and the boiler cylinder
control temperature set at 60
thermostat over-riding the boiler control.
Where the boiler control does not directly
power the 2 Port Motorised Valve supplied
with the Megaflo Eco, the wiring should
ensure that in the event of the thermal cut-
out on the Megaflo Eco Indirect controls
operating power will be interrupted to the
2 Port Motorised Valve such that it closes
and prevents flow of the primary heating
fluid around the Megaflo Eco primary heat
exchanger coil.
For further details of wiring the boiler,
consult the boiler manufacturer's installation
instructions.
C to avoid the
o
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