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Service Call 0844 736 9138, Technical Help (Chargeable) Call 0906 802 0253
17 Draining
17.1 Heating circuit
B
A
1
2
2
Key
1 Length of hose (not supplied)
2 Drain valve
• Drain down the heating circuit of the boiler only, by closing
the heating fl ow and return isolating valves. See chapter
"Hydraulic connection ► Gas and water connections"
• Attach a length of hose (1) to the drain point and open the
drain valve (2).
• After draining, close the drain valve (2) and remove the hose.
17.2 Domestic Hot water circuit
• Drain the Domestic Hot Water circuit by closing the cold-
water isolation valve.
• Open one or more hot water taps to drain the hot water
circuit.
18 Servicing
• To ensure the continued effi cient and safe operation of the
boiler it is recommended that it is checked and serviced as
necessary at regular intervals.
The frequency of servicing will depend upon the particular
installation conditions and usage.
If this appliance is installed in a rented property there is a duty
of care imposed on the owner of the property by the current
issue of the Gas Safety (Installation and Use) Regulations,
Section 35.
• Servicing/maintenance should be carried out by a
competent person
approved at the time by the Health and
Safety Executive in accordance with the rules in force in the
countries of destination.
• To obtain service, please call your installer or Heatline’s
own service organisation.
PLEASE NOTE: During routine servicing, and after any
maintenance, we recommend that the following must be
checked:
- The integrity of the fl ue system and the fl ue seals,
- The integrity of the boiler combustion circuit and the
relevant seals,
- The operational (working) gas inlet pressure at maximum
rate,
- The gas rate,
- The combustion performance.
• See the "Safety instructions" chapter for a list of operations
to be performed prior to the maintenance of the application.
• Once the maintenance operations have been completed,
consult the ¨Start Up¨ chapter to restart the appliance.
18.1 Annual Maintenance
18.1.1
Verifi cation of components
• Check that the fl ow sensor is working properly.
See chapter "Specifi c adjustment ► Appliance technical
settings and parameter list ► Installation settings" and use
code “d.36”.
• Check that the fan is working properly.
See chapter "Specifi c adjustment ► Appliance technical
settings and parameter list ► Installation settings" and use
code “d.34”.
• Check that the temperature sensors are working properly.
See chapter "Specifi c adjustment ► Appliance technical
settings and parameter list ► Installation settings" and use
code “d.3, d.4, d.40, d.41”.
• Check the ionisation quality.
• Check that the thermal fuse protects the appliance against
dry fi re. Disconnect the thermal fuse and check if "F76"
fault code is displayed on the screen.
• Check that the pressure sensor is working properly. The
pressure must be displayed on the screen.
• Check the pressure of the expansion vessel.
18.1.2
Other checks
• Check the CO
2
and fuel rate and compare them with the
values in the chapter “CO
2
Measurement” If the fl ame
picture and combustion is OK then there is no need to
remove the combustion box door, continue with the checks
below. Should the combustion be out of range continue
with a full service noting that should the combustion
chamber be opened then the graphite seal (12) and
the locking nuts (7) as seen in diagram 18.9 should be
replaced.
• Check that there are no leaks in the joints and the safety
valves.
