Servicing Schedule - IDEAL istor HE260 Installation And Servicing

51 SERVICING SCHEDULE

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WARNING. Always turn OFF the gas supply at the gas service cock, and switch OFF and disconnect the electricity supply
to the appliance before servicing.
To ensure the continued safe and efficient operation of the
appliance it is recommended that it is checked at regular
intervals and serviced as necessary. The frequency of
servicing will depend upon the installation condition and
usage but should be carried out at least annually.
It is the law that any service work must be carried out by a Gas
Safe Registered Engineer. IN IE service work must be carried
out by a Registered Gas Installer (RGII).
BOILER MODULE
1. Remove the upper and lower front panels. Refer to Frame 53.
2. Light the boiler and carry out a pre-service check, noting
any operational faults.
3. Relight the boiler and operate for at least 10 minutes.
4. Clean the main burner.
5. Clean the heat engine and 'S' trap.
Note. This must be done with the heat engine and deposits in
a dry condition. Refer to Frame 59.
6. Check the main injector for blockage or damage.
7. Wherever possible remove and clean the condensate trap
(refer to Frame 59) and check the drain for blockage.
8. Check that the flue terminal is unobstructed and that the
flue system is sealed correctly.
9. If for any reason, the condensate trap has been removed.
Ensure that the trap is re-filled with water before re-
assembly.
10. Complete the service section in the Benchmark
Commissioning Checklist.
TANK MODULE
Note. The unvented DHW cylinder must be inspected and
serviced annually.
11. Release system pressure via relief valve and check
expansion vessel pre-charge pressure is between 1.5 to
2.5 bar. Adjust if required and top up system to same
pressure.
12. With no water pressure on the system, check and if
necessary adjust the secondary expansion vessel
pressure to approximately 2 bar.
Do NOT OPERATE the boiler if the sealing panel is not fitted
istor system store -
Installation and Servicing
SERVICING
Note. Vessel pressure can not be accurately set with water
pressure in system.
13. Partially open vent on top of heat exchanger and release
any trapped air. Partially unscrew cap on the air vent (on
top of diverter valve) and release air.
14. Remove and clean the DHW inlet filter. Refer Frame 60.
15. Check that the discharge from both the expansion valves
and the temperature and pressure relief valve on the tank
go to waste. The pipe is clear and both valves close.
16. Check all joints for leaks
GENERAL
The servicing procedures are covered more fully in Frames
51 to 64 and MUST be carried out in sequence.
Note.
In order to carry out either servicing or replacement of
components the boiler front panels, sealing panel and facia
panel must be removed.
IMPORTANT.
After completing the servicing or exchange of components
always test for gas tightness.
When work is complete the sealing panel MUST be correctly
refitted, ensuring that a good seal is made.
17. Check the condition of the combustion chamber insulation.
Any cracked, damaged or displaced pieces should be replaced.
Ionisation probes are a servicable component and require
inspecting annually. Replace if distorted.
18. Check the gas consumption.
19. Connect a suitable gas analyser to the sampling point on
the top of the boiler or into the flue terminal if access is
possible (optional test).
For correct boiler operation, the CO/CO
gas should not be greater than 0.004 ratio.
20. Complete the service section in the Benchmark
Commissioning Checklist.
content of the flue
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