Baxi EcoBlue Plus Combi Quick Start Manual download pdf (Page 54)

54 EcoBlue Plus Combi 7212136 - 02 (08/14)

10 Maintenance

Expansion Vessel Charge - 1.0 bar

13. To check the charge accurately ensure the system is cold.

It is also necessary to relieve the pressure by draining the

boiler. Using a suitable gauge check the pressure at the valve

on the underside of the vessel. Adjust the pressure as required

and repressurise the system.

A right angled valve extension will aid checking and

repressurising.

DHW Filter (Fig. 48)

14. If the flow of domestic hot water is diminished, it may be

necessary to clean the filter.

15. Turn the cold mains isolation cock (Fig. 47) off and draw off

from a hot tap.

16. Disconnect the pump cable, remove the retaining clip and

extract the filter cartridge and rinse thoroughly in clean water.

Reassemble and check the flow.

17. Check the operation of the Safety Pressure Relief Valve.

Simulate ‘Flame Failure’ fault by isolating the supply at gas cock

and operating the boiler. 133 should be displayed.

18. Reassemble the appliance in reverse order, ensuring the

front case panel is securely fitted. Recommission the boiler.

19. Complete the relevant Service Interval Record section of the

Benchmark Commissioning Checklist at the rear of this

publication and then hand it back to the user.

Control Box

removed for clarity

Fig. 47

Inlet/Return Manifold

Fig. 48

Filter

Cartridge

Clip

DHW

Isolation Cock

View

underneath

appliance

10.3 Specific Maintenance Operations

Changing Components

See Section 10.2 paragraph 2 for removal of case panel door

etc.

10.3.1 Spark Ignition & Flame Sensing Electrodes

1. Note their position and disconnect the electrode leads.

Remove the retaining screws securing each of the electrodes to

the combustion box cover and remove the electrodes, noting

their orientation.

2. Check the condition of the sealing gaskets and replace if

necessary. Reassemble in reverse order (Fig. 49).

3. If satisfactory combustion readings are not obtained ensure

the electrode position is correct and perform the combustion

check again.

WARNING

When changing components ensure that both the

gas and electrical supplies to the boiler are isolated

before any work is started. When the component has

been changed recommission the boiler as described

in Section 7.

Always examine any seals or gaskets, replacing

where necessary. The Case Front Panel MUST seal

effectively against the boiler side panels.

Spark Ignition

Electrode

Flame Sensing

Electrode

Leads

Flow

Restrictor

Turbine

& Filter

Sealing

Gasket

Sealing

Gasket

Fig. 49

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 ... 75 76

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Baxi EcoBlue Plus Combi Quick Start Manual Page 54

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