Settings; Routine Cleaning And Inspection; Settings 16 - Saunier Duval Themaclassic F30E Instructions For Use Installation And Servicing

Bypass
The Themaclassic boiler has a built-in bypass. This must be
adjusted according to the requirements of the system, refer to
the flow rate pressure curve (diagram 1.1). The boiler is
supplied with the built-in bypass open a half a turn. It is adjusted
by turning the bypass screw (a), see diagram 16.1. Turn the
screw clockwise to close the bypass. When using thermostatic
radiator valves (TRV's) on all of the radiators, it is essential that
a separate, adjustable bypass of 15 mm minimum diameter is
fitted between the flow and return of the heating circuit, see
diagram 3.1. Any bypass must be fitted before system controls.
REMEMBER, when replacing a part on this appliance, use only
spare parts that you can be assured conform to the safety and
performance specification that we require.
reconditioned or copy parts that have not been clearly authorised
by Hepworth Heating.
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 particular installation conditions and usage, but in general
once a year should be enough.
It is the law that any servicing is carried out by a qualified
registered person.
17.1 Products of combustion check
Top Flue: To obtain a products of combustion reading, unscrew
the left hand sampling point cap on the flue elbow, located on
top of boiler, see diagram 17.1.
Rear Flue: To obtain a products of combustion reading, unscrew
the sampling point cap on the flue spigot, located between the
boiler and the wall, see diagram 17.1.
Connect the analyser tube onto sampling point.
Refer to the combustion product values in Section 1 Technical
Data.
Switch on the electrical supply and gas supply, then operate the
boiler.
On completion of the test switch off the electrical supply and the
gas supply, remove analyser tube and replace sampling point
cap.
17.2 Service Check and Preparation.
• Isolate boiler from the gas and electrical supplies.
• F30E Only Drain the Domestic hot water cuircuit, refer to
diagram 17.2.
• Drain the Boiler, refer to diagram 17.2.
• On completion check all gas-carrying parts for soundness with
leak detection fluid.
• Remove boiler casing as follows:
17.3 Front panel
• Unscrew and remove the two retaining screws from the bottom
of the front panel.
• Remove front panel by lifting up and forward.

16 Settings

17 Routine Cleaning and Inspection

Do not use
A
F30E shown
17.4 Control panel
• Lower forwards to gain access to lower part of boiler.
17.5 Sealed chamber cover
• Unscrew and remove the two retaining screws from the sealed
chamber cover, see diagram. 17.3.
• Lift cover up and off pins on top of boiler.
17.6 Side panels (for ease of access if
available), refer to diagram 17.4
• Unscrew and remove the two retaining screws from front of
each side panel.
• Left hand side panel only disconnect the control panel retaining
strap at the control panel.
• Unhook each panel from the front retaining tabs.
• Pull each panel forward from the rear retaining tabs to remove.
PRODUCTS
SAMPLING
POINT
TOP FLUE
PRODUCTS
SAMPLING
POINT
REAR FLUE
27
Diagram 16.1
Diagram 17.1
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