Vaillant ecoTEC exclusive 832 Service Manual download pdf (Page 47)

47Installation and maintenance instructions ecoTEC exclusive 0020017768_05

10 Replacing components

The tasks listed below in this section may be carried out

only by a heating engineer approved at the time by the

Health and Safety Executive.

• Only use genuine spare parts for repairs.

• Make sure the parts are correctly fitted and that their

original position and alignment are retained.

10.1 Safety instructions

Danger!

Each time the components are replaced, comply

with the safety instructions below for your own

safety and to avoid damage to the appliance.

• Take the appliance out of operation.

Note!

Isolate the appliance from the electrical mains

by pulling the plug out of the wall plug socket!

• Close the gas cock in the gas supply pipe, the mainte-

nance cocks and -if fitted-in- the heating flow and

return.

• Close the cold water inlet valve on the inlet combi-

nation.

• Empty the appliance if you want to replace water-

bearing components of the appliance!

• Make sure that no water drips on live components

(e.g. electronic box etc.)!

• Use only new gaskets and O-rings!

• After completing the work, check for gas leaks and

perform a function check (see Section 6).

10.2 Replacing burner

Danger!

Before replacing the component, comply with

the safety instructions in Section 10.1.

• Dismantle the compact thermo module as described in

Section 8.3.1.

Fig. 10.1 Replacing burner

• Release the 4 screws (1) on burner, and remove the

burner.

• Mount the new burner with a new gasket. Make sure

that the nose on the burner window grips onto the

gasket in the groove in the burner.

• Install the compact thermo module as described in

Section 8.3.4.

• After completing the work, check for gas leaks and

perform a function check (see Section 6).

10.3 Replacing fan or gas fittings

Danger!

Before replacing the component, comply with

the safety instructions in Section 10.1.

• Disconnect the appliance from the mains as described

in Section 10.1, and close the gas cock in the gas

supply pipe.

Fig. 10.2 Dismantling fan with gas valve

• Remove the screw (2) and remove the air inlet pipe (1)

from the inlet spigot on the gas fitting.

• Release the gas supply pipe (4) on the gas valve.

• Pull out the plug from the gas valve.

• Only ecoTEC exclusive 832: Pull out the plug from the

fan printed circuit board.

Only ecoTEC exclusive 838: Open the coupling of the

mains input.

• Release the four screws (3) on the compact thermo

module .

• Remove the complete "gas fitting/fan" unit.

Replacing components 10

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Vaillant ecoTEC exclusive 832 Service Manual Page 47

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