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11 commissioning, 11 commissioning - instructions to the user – Glow-worm 24-38CXI Range User Manual

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11 Commissioning

11.7 Completion

Adjust the boiler temperature control and any system controls
to their required settings. In addition it is necessary to complete
the "Benchmark" logbook.

For IE, it is necessary to complete a "Declaration of Conformity"
to indicate compliance to I.S.813. An example of this is given in
the current edition of I.S.813.

Testing Flue Gases: If any doubt exists that the flue products
are not exhausting correctly, investigate by use of a gas
analyser (FGA).

Diagram 11.5

9531

ADJUSTMENT
SCREW

11.8 User Controls and Options

The mains reset on/off switch is used to restart the boiler after
a fault condition has occurred, i.e. ignition failure, low water
pressure or high water temperature.

The central heating water temperature and hot water
temperature control knobs allow the user to set the temperatures
in each mode.

NOTE: If there is no demand the digital display shows the water
pressure.

Temperature Display

The digital display normally shows the operating temperature
of the unit when there is a central heating demand.

Holiday Mode

Normal mode uses the domestic hot water and central heating
temperatures selected.

By turning the central heating water temperature and hot water
temperature control knobs to minimum setting the holiday mode
is set up. However, frost protection and pump exercise
programme remain active. By doing this the DHW will operate
without pre-heat and DHW will set at maximum temperature. To
resume normal operation after a holiday period, return the
control knobs to their original position.

11.9 Pump Exercise Program

After a power cut or every 24 hours in holiday mode the three
way valve will switch and the pump will run to prevent the
components from sticking. This will also occur during normal
operating if there is no domestic or central heating demand for
more than 24 hours.

11.10 Frost Protection

The boiler has a built in frost protection programme as long as
the electricity and gas are left switched on.

This device operates the appliance pump when the temperature
inside the boiler falls below 7°C and circulates water around the

appliance only.

If the temperature falls to 3°C the burner is lit and water

circulates around the heating system.

When the temperature inside the appliance reaches 10°C the

burner will shut down and after a short period the pump will stop.

This device primarily protects the boiler. Any other exposed
areas of the system should be protected by a separate frost
thermostat.

11.11 Instruct the User

Instruct and demonstrate the lighting procedure and advise the
user on the safe and efficient operation of the boiler.

Instruct on and demonstrate the operation of any heating
system controls.

Advise the user on the use and maintenance of any scale
reducer and pass on any relevant instructional documents.

Advise that to ensure the continued efficient and safe operation
of the boiler it is recommended that it is checked and serviced
at regular intervals. The frequency of servicing will depend upon
the installation conditions and usage, but in general, once a
year should be enough.

Draw attention, if applicable, to the current issue of the Gas
Safety (Installation and Use) Regulations, Section 35, which
imposes a duty of care on all persons who let out any property
containing a gas appliance in the UK.

The user shall not interfere with or adjust sealed components.

It is the Law that any servicing is carried out by a competent
person
.

Advise the user that, like all condensing boilers this appliance
will produce a plume of condensation from the flue terminal in
cool weather. This is due to the high efficiency and hence low
flue gas temperature of the boiler.

Advise the user of the precautions necessary to prevent damage
to the system, boiler and the building, in the event of the heating
system being out of use during frost or freezing conditions.

Advise the user that the permanent mains electrical supply
SHOULD NOT be switched off, as the built in frost protection
and pump/valve saver program would not be operable.

Reminder, leave these instructions and the ‘Benchmark’ logbook
with the user.

11 Commissioning - Instructions to the User