MEGAFLO 2sf, Инструкция по эксплуатации

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20
WARNING
`
If the unit is to be left unused following
installation and commissioning e.g.
unoccupied properties, the water heater
should be drained or regularly flushed
through with fresh mains water once a
week.
` When placing the unit into service, the
procedure for filling the unit and the
system checks above should be observed.
7.2 Checklist before commissioning
` Check all water connections for leaks and rectify as
necessary.
` Turn off mains water supply.
` Remove the pressure reducing valve head work to
access the strainer mesh, clean and re-fit.
` Turn the water supply back on.
` Manually open, for a few seconds, each Relief Valve
in turn, checking that water is discharged and runs
freely through the tundish and out at the discharge
point.
`
Ensure that the valve(s) re-seat satisfactorily.
7.3 Commissioning procedure
Indirect units
`
Ensure the filling loop hose is connected at both ends
and is tight.
`
Fill the indirect (primary) circuit following the boiler
manufacturer’s commissioning instructions.
` Open the isolating valves at either end of the filling
loop and allow to fill from the mains inlet supply.
` To ensure the appliance primary heat exchanger is
filled, both of the 2 port motorised valves (supplied)
should be manually opened by moving the lever on
the motor housing to the MANUAL setting. When
the primary circuit is full return the lever to the
AUTOMATIC position.
` Air can be vented from the primary heating coil by
unscrewing the small dust cap on the auto air vent
by half a turn.
`
The primary system should be pressurised to the
minimum pressure required by the boiler (usually 1
bar), the pressure gauge fitted should be used to
ensure the correct system pressure is set.
` When full and pressurised, the filling loop isolating
valves should be closed, the pipe disconnected and
the caps replaced. The levers on the motorised valves
should be returned to the Auto position.
` Check primary circuit for leaks and rectify as necessary
Switch on the boiler, ensure the programmer is set to
Hot Water and allow the cylinder to heat up to a
normal working temperature (70
o
C recommended).
7. Commissioning
7.1 General
After filling the installation with water in the previous
section please follow the following steps to complete the
installation of the unit.
WARNING
DO NOT operate the immersion heaters or
primary circuit until the appliance has been
filled with water.
Direct Heating
` Switch on electrical supply to the immersion heater
and allow the appliance to heat up to normal working
temperature, factory set to 57°C but for maximum
water availability reset to 70°C (see Fig 16 page 19).
` The adjustment represents a temperature range of
10°C to 70°C.
` Check the operation of thermostat and that no
water has issued from the Expansion Relief Valve or
Temperature/Pressure Relief Valve during the heating
cycle.
Benchmark
The cylinder is covered by the Benchmark Scheme
which aims to improve the standards of installation
and commissioning of domestic heating and hot water
systems in the UK and to encourage regular servicing to
optimise safety, efficiency and performance.
Benchmark is managed and promoted by the Heating
and Hotwater Industry Council. For more information
visit www.centralheating.co.uk.
All installations must be notified to Local Area Building
Control either directly or through a Competent Persons
Scheme. A Building Regulations Compliance Certificate
will then be issued to the customer who should, on
receipt, write the Notification Number on the Benchmark
Checklist.
This product should be serviced regularly to optimise its
safety, efficiency and performance. The service engineer
should complete the relevant Service Record on the
Benchmark Checklist after each service.
The Benchmark Checklist may be required in the event of
any warranty work.