3.4 Vitocal 200-G with one heating circuit without mixer, with DHW heating (optional solar
DHW heating) and natural cooling function with NC-Box with mixer
ID: 4605363_1304_03
Application range
Detached house with one heating circuit and cooling demand. Size the
DHW cylinder in accordance with current standards and require-
ments.
Note
The minimum flow rate of heat pump
1
must be safeguarded by sec-
ondary pump
6
and overflow valve
oW
. The heating line and overflow
valve must be matched up.
Main components
■ Vitocal 200-G with Vitotronic 200, type WO1B
■ Heating circuit distributor with one heating circuit without mixer
■ DHW cylinder
■ Solar thermal system
■ Solar heat exchanger set
■ NC-Box with mixer
Central heating by heat pump
Heat pump
1
, primary pump
5
and secondary pump
6
start if the
actual return temperature is lower than the set temperature selected
at control unit
2
.
Heat pump
1
supplies heating circuit
uP
with heat. Control unit
2
regulates the flow temperature of heating circuit
uP
. Subject to
demand, secondary pump
6
delivers heating water to heating circuit
uP
, or via circulation pump for cylinder heating
7
to DHW cylinder
eP
.
Once the actual return temperature value at the return temperature
sensor exceeds the set temperature selected at control unit
2
, heat
pump
1
and primary pump
qT
are switched off.
DHW heating by heat pump
In the delivered condition, DHW heating by heat pump
1
is given
priority over heating circuit
uP
and takes precedence at night.
The heat demand is issued via cylinder temperature sensor
eW
and
control unit
2
, which controls circulation pump for cylinder heating
7
. Heat pump
1
raises the flow temperature to the value required
for DHW heating.
DHW reheating can be provided by an electric booster heater (e.g.
immersion heater inside the DHW cylinder).
If the set cylinder temperature selected at control unit
2
is exceeded,
the control unit switches circulation pump for cylinder heating
7
off
and starts secondary pump
6
in the case of heat demand from heat-
ing circuit
uP
. Heating circuit
uP
is supplied with heat.
The flow temperature can be raised above 65 °C with instantaneous
heating water heater
4
.
Solar DHW heating (option)
Heat pump control unit
2
in Vitocal 200-G can be connected via KM
BUS distributor
8
to a Vitosolic 100 (type SD1)
rU
to achieve solar
DHW heating.
Circulation pump
rE
in Solar-Divicon
rW
starts and DHW cylinder
eP
is heated up when the temperature differential between collector
temperature sensor
rR
and cylinder temperature sensor
eQ
exceeds
the set value.
The heat pump will be locked out against cylinder heating when the
temperature at cylinder temperature sensor
eW
in the DHW cylinder
exceeds the set value selected at the control unit.
The solar thermal system heats the cylinder to the set value selected
at solar control unit
rU
.
Natural cooling function
The building can be cooled with heat pump control unit
2
in conjunc-
tion with NC-Box
iP
(accessories). The natural cooling function is
enabled by control unit
2
as soon as the outside or room temperature
(cooling limit temperature) that can be selected at control unit
2
is
exceeded. Circulation pumps
iR
and
iW
in the NC-Box start and 3-
way diverter valve
iQ
switches to cooling. Heat is now extracted from
the room via heating circuit
oP
and transferred to the brine circuit via
the plate heat exchanger in the NC-Box. The brine circuit transfers the
heat to the ground via geothermal probe
wU
. DHW can be heated by
heat pump
1
whilst cooling mode is operational.
Required parameter settings
ID: 4605363_1304_03
Parameter Value Function
7000 2 With heating circuit A1/HC1, DHW cylinder (delivered condition)
7100 2 Natural cooling NC-Box with mixer
7101 1 Cooling via heating circuit A1/HC1
7103 180 Min. flow temperature, cooling
7104 50 Influence room temperature hook-up cooling circuit
7111 4 Cooling curve slope
7A00 1 With Vitosolic 100, type SD1
2003 1 Vitotrol 200A remote control activated for heating circuit A1/HC1
ID: 4605363_1304_03
Vitosolic 100, type SD1
Parameter Value Function
ANL 2 System version
"RPM" "0" Pump with electronic speed control (delivered condition)
"1" Standard solar circuit pump without separate variable speed control - speed controlled by
pulse pack control
"2" Pump with PWM input (Wilo)
"3" Pump with PWM input (Grundfos)
Vitocal 200-G
(cont.)
62
VIESMANN
System examples
3
5822 472 GB
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