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7
SERVICING INSTRUCTIONS
Ravenheat is a member of the Benchmark
initiative and fully supports the aims of the
programme.
Benchmark was instructed to improve the
standards of installation and commissioning
of central heating systems in the UK and
to encourage the regular servicing of all
central heating systems to ensure safety and
efficiency.
Combustion testing must be carried out by competent person
using a combustion analyser conforming to BS7927.
During routine servicing, and after any
maintenance or change of part of the
combustion circuit, the following must be
checked:
- The integrity of the flue system and the
flue seals.
- The integrity of the boiler combustion
circuit and the relevant seals.
- The operational dynamic (working) gas
inlet pressure at maximum rate.
- The gas rate.
- The combustion performance (Refer to
table 9 and page 64).
table 9 and page 64).
- Check all joints and connections in the
- Check all joints and connections in the
appliance and remake any that show signs
appliance and remake any that show signs
of leakage.
of leakage.
NOTE:
NOTE:
Service consumables are not covered by
Service consumables are not covered by
the warranty.
the warranty.
To view warranty exclusions please visit
To view warranty exclusions please visit
www.ravenheat.co.uk
www.ravenheat.co.uk
or contact us on 01132 527007.
or contact us on 01132 527007.
COMPETENCE TO CARRY OUT THE CHECK
COMPETENCE TO CARRY OUT THE CHECK
OF COMBUSTION PERFORMANCE.
OF COMBUSTION PERFORMANCE.
Please note: BS6798:2009 Specification for
Please note: BS6798:2009 Specification for
installation and maintenance of gas-fired
installation and maintenance of gas-fired
boilers of rated input not exceeding 70 kW
boilers of rated input not exceeding 70 kW
net advises that:
net advises that:
- The person carrying out a combustion
- The person carrying out a combustion
measurement should have been a
measurement should have been assessed
as competent in the use of a flue gas
analyser and the interpretation of the
results.
- The flue gas analyser used should be one
meeting the requirements of BS7927 or
BS-EN 50379-3 and be calibrated in
accordance with the analyser
manufacturers requirements.
- Competence can be demonstrated by
satisfactory completion of th
satisfactory completion of the CPA1 ACS
assessment which covers the use of
electronic portable combustion gas
analysers in accordance with BS 7967,
Parts 1 to 4.
44
(Refer to
7.1 BOILER FROST PROTECTION
The appliance has a built in frost protection
device that protects the boiler from freezing.
With the gas and electric supplies ON and
irrespective of any room thermostat setting, the
frost protection device will operate the pump
when the temperature falls below 10 °C and
will operate the burner when the temperature
falls below 5°C.
The burner will switch off when the temperature
reaches 27 °C. When the frost protection
device operates "AF" is displayed on the digital
display.
IMPORTANT NOTE:
The system should be protected by incorporating
a system frost thermostat.
To ensure continued efficient operation of
the appliance it is necessary to carry out
servicing and cleaning at regular intervals.
The frequency of servicing and cleaning will
depend upon the particular installation
conditions and usage but in general, once a
year is advisable.
WARNING:
Before the start of any servicing or
replacement of components always
isolate the electricity supply to the
appliance and always turn off the
appliance gas supply at the gas
service cock.
The data badge is positioned low on the
inside left panel.
- The following notes apply to the appliance
and its controls but it should be remembered
that attention must also be paid to the heating
and hot water circuits with special attention to
radiator valves, thermostats, clocks, leaking
hot water taps etc.
- Where it is necessary to replace a gasket that
relies on adhesive for securing - this adhesive
will be supplied with the gasket as a spare
item.
- In all cases prior to servicing, remove the front
panel of the case. Operate the appliance by
turning the hot water services on to a high
water flow. Measurement of the products of
combustion can be achieved by connection
of a probe to the combustion analyser test
point.
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