Product description 3
0020214277_01 atmoTEC exclusive, atmoTEC plus Operating instructions
7
3.1.1
Digital Information and Analysis System
(DIA)
1
2
1
Display showing the
current heating flow
temperature, the filling
pressure in the heating
installation, or a status
or fault code
2
Plain text display (for
atmoTEC exclusive
only)
Symbol
Meaning
Explanation
Flue gas route
Symbol permanently
visible: Fault in the flue
gas route
VR 920
The heating flow and
domestic hot water tem-
perature are specified
via the
VR 920
commu-
nications system. The
product works at temper-
atures other than those
set at the rotary knob.
This operating mode can
only be terminated by:
–
VR 920
–
Changing the tem-
perature 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 perman-
ently on: Product is
in heating mode op-
erating mode
–
Symbol flashing:
Burner anti-cycling
time is active
Symbol
Meaning
Explanation
Domestic hot water gen-
eration
VC/VCC*:
–
Symbol perman-
ently visible: Char-
ging mode for the
domestic hot water
cylinder is enabled
by the control and
floor-standing boiler
control system
–
Symbol flashes: Do-
mestic hot water cyl-
inder is being heated
VCW:
–
Symbol permanently
visible: Domestic hot
water is being drawn
off
–
Symbol off: No do-
mestic hot water is
being drawn off
Warm start
VCW
:
–
Symbol permanently
visible: Warm start
function is in standby
–
Symbol flashes:
Warm start function
is in standby, burner
is switched on
Heating pump operating
Solenoid valve is actu-
ated
Gas supply to the burner
is open
Current energy demand
Display of the current
burner modulation rate
(only bar graph display
for atmoTEC exclusive)
Fault during burner oper-
ation
Burner is switched off
Burner operating cor-
rectly
Burner is switched on
* Only when a domestic hot water cylinder is connected
Press the "-" button for approx. five seconds to switch from the
flow temperature display to the system pressure display or vice-
versa.
3.2
Information on the data plate
The data plate is mounted on the underside of the product at
the factory.
Information on the data
plate
Meaning
VC, VCC, VCW
Type designation
10, 19, 20, 24, 25
Unit output
/4
Unit generation
-5 = plus, -7 = exclusive
Unit type
V
Mains voltage
W
Power consumption
Hz
Mains frequency
MPa
Max. line pressure
IP
IP rating/protection class
Cat. (e.g. II
2H3P
)
Unit category
