Vaillant ecoCRAFT exclusive, Operating Instructions Manual

Page: 9 / 24

Product description 3
0020149575_01 ecoCRAFT exclusive Operating instructions
9
Sym-
bol
Meaning Explanation
comDIALOG The heating flow
and domestic
hot water tem-
perature are
specified via the
comDIALOG
communications
system. The
product works at
temperatures
other than those
set at the rotary
knob.
This operating
mode can only
be terminated by:
–
comDIALOG
–
Changing the
temperature
at the rotary
knobs by more
than
±
5 K
This operating
mode cannot be
terminated by:
–
Pressing the
Reset button.
–
Switching the
product off
and on again
Heating mode
–
Symbol per-
manently on:
Product is in
heating mode
operating
mode
–
Symbol flash-
ing: Burner
anti-cycling
time is active
Sym-
bol
Meaning Explanation
Hot water gener-
ation
–
Symbol per-
manently vis-
ible: Charging
mode for the
domestic hot
water cylinder
is enabled by
the control and
floor-standing
boiler control
system
–
Symbol
flashes: Do-
mestic hot
water cylin-
der is being
heated
Heating pump
operating
Solenoid valve is
actuated
Gas supply to the
burner is open
Current energy
demand Display of the
current burner
modulation
rate (bar graph
display)
Fault during
burner operation Burner is
switched off
Burner operating
correctly Burner is
switched on
3.4 Benchmark
Vaillant is a licensed member of the
Benchmark Scheme which aims to im-
prove the standards of installation and
commissioning of domestic heating and
hot water systems in the UK and to en-
courage regular servicing to optimise
safety, efficiency and performance.