Booster Heaters - Viessmann VITOTRONIC 200 Service Instructions Manual

Smart Grid
(cont.)
Floating contact
1 ( ) 2 ( )
C D
X X
X Contact active
Contact not active
0
Information regarding functions 3 and 4
■ As excess power is being consumed, the consump-
tion of electrical power is disregarded when calcu-
lating the seasonal performance factor.
■ Set temperatures can also be adjusted when utilising
power generated on site. If utilisation of power gen-
erated on site and function
time, the higher set value adjustment applies: See
chapter "Photovoltaics".

Booster heaters

Central heating
An instantaneous heating water heater and/or an
external heat source can be used as the booster
heater for central heating. Both appliances are control-
led by the heat pump control unit. "Priority ext. heat
source/instant. heating water heater 7B01" speci-
fies which heat source the heat pump control unit
switches on first in the event of increased heat
demand in the heating circuits.
Function
4 System components are heated to the set max. temperatures or cooled to the
minimum temperatures. The compressor starts immediately, even when no
time phase is active in the time program.
Max. temperatures for different functions:
DHW heating:
■
"Max. DHW temperature 6006"
Buffer cylinder heating:
■
"Max. temperature buffer cylinder 7204"
Central heating:
■
"Max. flow temperature heating circuit 200E"
Central cooling:
■
"Min. flow temperature cooling 7103"
The instantaneous heating water heater may be switched on to reach the
■
max. temperatures. The max. stage can be selected ("Smart Grid Enable
elec heat 7E82").
The max. set temperatures do not affect the remaining booster heaters, e.g.
■
external heat sources. The booster heaters are switched off at the limits that
apply without Smart Grid.
The system components are heated or cooled in sequence according to the
■
specified priorities, e.g. DHW heating before central heating.
The "Shutdown limit, heat pump dual mode 7B0F" is shifted to
■
that the heat pump will remain in operation, even at low outside temperatures.
are active at the same
3
Note
The use of an instantaneous heating water heater
and/or an external heat source is not possible for all
heat pumps.
DHW reheating
See chapter "DHW reheating with booster heaters" on
page 42.
Function description
30 °C, so
–
37