Cleaning The Burner; Fitting The Fan - Viessmann MatriX Service Instructions For Contractors

Cleaning the burner

Removing the fan
3.
4x
6x
Fig. 25
Removing cables and the gas supply pipe, see Fig. 16
on page 21

Fitting the fan

Fit in reverse order. Fig. 25 steps 3 to 1.
Torque: 8 Nm
Note
Ensure that the gasket between the fan casing and the
burner flange is correctly positioned.
1.
2.
Commissioning, inspection, maintenance
Danger
Mains voltage can be life threatening.
For maintenance work, isolate the gas fan from
the power supply.
1. Pull off the control cables.
2. Undo the Venturi mixing pipe and remove with the
gas train and gas supply pipe.
3. Undo the fan.
Note
Ensure that the gasket between the fan casing and
the burner flange is correctly positioned.
4. Clean the fan housing and impeller carefully with
compressed air.
5. If necessary, vacuum the inside of the burner
gauze assembly.
Danger
Escaping gas leads to a risk of explosion.
Check the fitting and gasket between the fan
casing and the burner flange for gas tightness.
25