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

Parameter group Buffer cylinder

Calling up the parameter group

1. Service menu:
Press OK + simultaneously and hold for
å
approx. 4 s.
2. "Coding level 1"
7200 Enable buffer cylinder/low loss header
Note
Buffer cylinder monitoring is not possible in conjunction
with an installation kit with mixer ("Type of assembly
kit 7044" set to "1"). In this case, this parameter has
no effect.
Value Meaning
"0" Buffer cylinder or low loss header are not in-
stalled.
"1" Heating water buffer cylinder or low loss
header is installed:
Simultaneous supply of max. 3 connected
■
heating circuits for central heating
Cooling via max. 1 heating/cooling circuit or
■
1 separate cooling circuit
For cooling, the heating water buffer cylin-
■
der is bypassed by a hydraulic bypass cir-
cuit.
Note
Perform settings only in conjunction with sys-
tem schemes 1 and 2. System schemes 3 to
10 require a buffer cylinder, which is preset.
Do not perform any settings for system
scheme 11.
7202 Temp in operating status fixed value for buffer cyl
Applies only to central heating in conjunction with heat-
ing water buffer cylinder or heating water/coolant buffer
cylinder.
The temperature cannot be set higher than "Max. tem-
perature buffer cylinder 7204".
7203 Hysteresis temperature heating buffer cylinder
The set value determines the deviation from the set
buffer temperature at which buffer cylinder heating
starts (subject to the operating status).
Note
This function is only available for system schemes 1
and 2 if "Enable buffer cylinder/low loss header
7200" is set to "1" or "2".
236
3. "Buffer cylinder"
4. Select parameter.
!
Value Meaning
"2" Heating water/coolant buffer cylinder is instal-
led:
Simultaneous supply of max. 3 connected
■
heating/cooling circuits for central heating
or
Simultaneous supply of max. 3 connected
■
heating/cooling circuits for central cooling
No cooling via separate cooling circuit
■
Manual switching between heating mode
■
and cooling mode of the heating water/cool-
ant buffer cylinder with "Buffer cyl operat-
ing mode 721F"
Note
Adjustable in conjunction with system
schemes 1 to 10.
Do not perform any settings for system
scheme 11.
"3" Do not adjust.
"4" Do not adjust.
"5" Do not adjust.
!
≙
Setting 1 0.1 °C
!