Vaillant aquaPLUS VUI 362-7 Instructions For Use Manual - page 7
7
Operation 3
Instructions for use VUI 362-7
7
Fig. 3.5: Domestic hot water supply
3.3.1 Warmstart operation
The warmstart facility provides instantaneous delivery
of domestic hot water from the aquaPLUS boiler.
When the warmstart system is switched ON the boiler
will automatically light periodically to maintain the
internal temperature of the boiler. When the warmstart
system is switched OFF a short delay may be
experienced in obtaining hot water at the tap.
• The warmstart system is activated by turning the hot
water temperature control knob (1) all the way to the
very right for a short time. Reset the hot water
temperature control knob to the desired setting. The
symbol "C" (comfort) appears in the display and
shows that the Warmstart system is activated. The
boiler will now provide instantaneous delivery of hot
water directly when a hot water tap is turned on.
• The Warmstart system is switched off by momentarily
turning the knob (1) to the left, as far as the stop. The
"C" symbol no longer appears in the display. Reset the
hot water temperature control knob to the desired
setting.
Note!
Irrespective of whether the warmstart facility is
switched on or off, the boiler will automatically
operate to provide hot water whenever a hot
water tap is opened.
C
o
0
I
C
o
VRC-VC
C
o
C
o
2
3
Fig. 3.6: Switching the warm start on and off
3.3.2 Obtaining hot water
When you open a hot water tap (1) at a draw-off point
(wash basin, shower, bath etc.), the appliance supplies
you with the hot water you require.
When a certain volume of water has been drawn off, the
appliance is brought into operation automatically and
the integrated hot water storage vessel is re-filled (in
some circumstances, the appliance may operate only
after the water has been drawn off).
Warning!
The appliance is equipped with an automatic
protection function against legionella: If the
temperature in the hot water storage vessel falls
below 50 °C, then the vessel will be heated to
65 °C once in a 24 hr period. In this way, the
water in the storage vessel is thermally
disinfected. Please note that after completion of
the thermal disinfection process there is a
possible risk of scalding when drawing off hot
water.
Fig. 3.7: Drawing off hot water
1
C
o
C
o
1
1
a
b
a
b
834641_12GB_032005.qxd 09.03.2005 16:42 Uhr Seite 7