Calling Up The Parameter Group - Viessmann VITOTRONIC 200 Service Instructions Manual

Parameter group Primary source

Calling up the parameter group

1. Service menu:
Press OK + simultaneously and hold for
å
approx. 4 s.
2. "Coding level 1"
7400 Primary source mode
Type of speed control for the primary pump or fan
7401 Primary source ctrl strategy
Control strategy for the fans or primary pump.
Condition: Fan or primary pump is speed-controlled
("Primary source mode 7400" set to "1").
745A Primary circuit pump type
Manufacturer of the primary pump: Required in order
to process operating data of the circulation pump in the
heat pump control unit.
234
3. "Primary source"
4. Select parameter.
/
!
Value
"0"
"1"
"2"
"3"
!
Value
"0"
"1"
"2"
"3"
"4"
"5"
!
Value
"0"
"1"
Meaning
No speed control, e.g. with standard circula-
tion pump (multi stage)
PWM signal from controller and sensor PCB
(plug a:DA )
Control via PWM signal from controller and
sensor PCB (plug a:DA )
Control via analogue voltage signal from re-
frigerant circuit controller (0 to 10 V)
Meaning
Regulation to constant speed
Speed control subject to the output curve of
the compressor
Speed control subject to the outside tempera-
ture compressor output curve
—
/ : Speed control subject to the differential
between the primary inlet and primary
outlet temperature (PID control)
: Do not adjust.
: Regulating to a constant flow rate in the
primary circuit
: Regulating to a constant flow rate in the
primary circuit: The current set flow rate is
dependent on the compressor speed and
the primary circuit flow temperature.
Meaning
Wilo
Grundfos