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WARNING
Should the cylinder be used in conjunction
with a boiler or external controls that
control the water temperature via a sensor
connected to the cylinder,
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 then the cylinder
thermostat should be set at a maximum
temperature of 70
over-riding the boiler control.
Where the boiler or external controls do not
directly power the 2 Port Motorised Valve
supplied with the cylinder, the wiring should
ensure that in the event of the thermal cut-
out on the cylinder 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 primary heat exchanger coil.
For further details of wiring the boiler, or
external controls consult the manufacturer's
installation instructions.
Any controls fitted should be compatible
with mains 230/240vAC and should be
wired in to operate the 2-port valve via the
cylinder controls supplied/fitted.
` 6.4 Filling the appliance
Ensure the drain cock is CLOSED.
`
Open a hot tap furthest from the appliance.
`
Open the mains stop cock.
`
Open the isolating valve by turning the blue handle
`
so it is parallel with the direction of flow. It should
be fully opened, partial opening will restrict the inlet
flow rate.
Allow the appliance to fill. When water flows 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.
Check all connections and system pipes for water
`
tightness.
WARNING
DO NOT operate the immersion heaters or
primary circuit until the appliance has been
filled with water.
22
it should
C to avoid the thermostat
o
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