External Hook-Up For Heating/Cooling Circuits - Viessmann VITOTRONIC 200 Service Instructions Manual

External functions
(cont.)
Secondary circuit set flow temperature
External demand
Note
In systems incorporating a buffer cyl-
inder the set buffer temperature is
specified.
System schemes 0 to 10:
According to "Set flow tempera-
■
ture external demand 730C"
or
Via analogue voltage signal at
■
"0-10 V" input of EA1 extension: 0
to 10 V corresponds to 0 to 100 °C
in the delivered condition.
Connect terminals with jumper at
input DE3.
The higher value is used.
System scheme 11:
Max. flow temperature in the sec-
■
ondary circuit (100 % output de-
mand)
Parameter settings
External demand
"System scheme 7000" set to "0"
■
to "10"
"Effect of external demand on
■
heat pump/heating circuits 7014"
"Priority external demand 7019"
■

External hook-up for heating/cooling circuits

The demand for central heating or cooling can be acti-
vated for every heating/cooling circuit, e.g. by a Smart
Home system.
Connection
The signal for the demand is switched via the 230 V~
digital inputs on the main PCB, plugs
See chapter "Main PCB".
Parameter settings
In order to enable the external hook-up for the relevant
heating/cooling circuit, set "Remote control 2003,
3003, 4003" to "2".
Operating status changeover
Highest flow temperature resulting
from the currently applicable oper-
ating status of the system compo-
nents.
Operating status changeover
"System scheme 7000" set to
■
"0" to "10"
"System components for exter-
■
nal changeover 7011"
"Operating status for external
■
changeover 7012"
"Effect of OM changeover to
■
ventilation 701F"
"Duration of external change-
■
over 7013"
and :
sYF sYH
Function description
External blocking
No set value specified
Note
Frost protection is not ensured. En-
abled booster heaters will not be
switched on.
External blocking
"System scheme 7000" set to
■
"0" to "10"
"Effect of ext. blocking on heat
■
pump/heating circuits 7015"
"Effect of external blocking on
■
pumps/compressor 701A"
33