19
2000225005B
7 Instructions to the User
Instruct and demonstrate the safe and efficient operation of the boiler, heating system and domestic hot water system.
Advise the user, 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 particular installation 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.
It is the Law that servicing is carried out by a competent person.
Advise the user of the precautions necessary to prevent damage to the system and building in the event of the heating system being
out of use during frost and freezing conditions.
Reminder - Leave these instructions and the “Benchmark” logbook with the user.
8 Servicing
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. Do not use
reconditioned or copy parts that have not been clearly authorised
by Hepworth Heating Ltd.
Products of Combustion Check
Note: To obtain a products of combustion reading, remove the
front panel and remove the control box as descibed in the
relevant paragraphs of section 4.8. Next, remove the cap from
the sampling point, located on the top of the left hand side of the
inner casing, see diagram 8.1.
Connect the analyser tube on to the nipple.
WARNING.
The multifunctional control and fan operate on
mains voltage, terminals will become live.
Switch on the electrical supply and gas supply then operate the
boiler.
On completion of the test switch off the electrical supply and gas
supply, remove analyser tube and replace sampling point cap.
Servicing
Before servicing turn off the gas and isolate the electrical supply
to the boiler.
After completing a service always test for gas soundness, make
electrical checks and carry out functional check on controls.
Unless stated otherwise all parts are replaced in the reverse
order to removal.
Diagram 8.3
ELECTRICAL
WIRE
RETAINING
CLIPS
CONTROL BOX
SUPPORT
BRACKET
Diagram 8.2
GAS
SERVICE
COCK
UNION
ELECTRICAL
PLUG
Diagram 8.1
SAMPLE POINT
SECURING
SCREW