Initial Lighting - Vaillant TURBOmax VUW 242/1 E Instructions For Installation And Servicing

5.6 Initial lighting

•
Check that the boiler combustion
chamber (5, fig. 33) is correctly
fitted.
•
Ensure the cold water shut-off valve
(4, fig. 34) is open by turning
anti-clockwise.
•
Open the gas service valve (2, fig.
34)
•
Check that the CH service valves
(1 and 5, fig. 34) are open.
•
Check that all external heating
controls are calling for heat.
•
Switch on the electricity supply to
the boiler.
•
Set both the maximum hot water
temperature control (4, fig. 33) and
maximum radiator temperature
control (3, fig. 33) to '9'.
•
Turn the boiler on/off control (1,
fig. 33) to the "on" position ( ).
•
Set the boiler central heating
control (2, fig. 33) to the 'Heating
and Hot Water' position (
The boiler will now operate for central
heating. Allow the boiler to run for a
few minutes to clear any air remaining
in the primary circuit.
(If the boiler should fail to light after
the 2nd ignition attempt the 'lock out'
indicator will illuminate - see fig. 41.
This usually means that the gas supply
is turned off, or is not purged of air.
Check gas supply, and turn the central
heating control to the reset position -
( ) - and repeat lighting procedure).
•
Set the boiler central heating
control to the 'Hot Water only'
position ( ). The boiler will now
switch off.
•
Reset the maximum radiator tempe-
rature control to the required setting
according to Section 5.14.
•
FULLY open a hot water tap. The
boiler will now operate for hot
water.
24
).
7 5
1 2 4 3
fig. 33
3
1
2
fig. 34
6
4
5
6