Viessmann VITOCAL 222-G User manual

Issue 6/2013
System examples 2014
Heat pumps
including functions, hydraulics,
components and electrics
2

Products
Compact heat pump
5.9 to 10.3 kW
Vitocal 222-G
Vitocal 242-G
Vitocal 333-G
Vitocal 333-G NC
Vitocal 343-G
Vitocal 333-G/343-G with Vitovent 300-F
Chapter 2, page 9
Brine/water heat pump
6.5 to 9.6 kW
Vitocal 200-G, type BWC Chapter 3, page 52
Heat pump
Brine/water
6.2 to 35.2 kW
Water/water
8.0 to 43.2 kW
Vitocal 300-G, type BW/BWS
Vitocal 300-G, type BWC
Vitocal 300-G, type WW/WWS
Vitocal 300-G, type WWC
Vitocal 350-G, type BW/BWS
Vitocal 350-G, type BWC
Chapter 4, page 74
Heat pump
Air/water
3 to 10.6 kW
Vitocal 200-S, type AWB
Vitocal 200-S, type AWB-AC
Vitocal 222-S, type AWT-AC
Vitocal 242-S, type AWT-AC
Vitocal 222-S/242-S with Vitovent 300-F
Chapter 5, page 127
Air/water heat pump
5 to 7 kW
Vitocal 200-A, type AWCI-AC Chapter 6, page 188
Air/water heat pump
3.0 to 18.5 kW
Vitocal 300-A, type AWCI-AC
Vitocal 300-A, type AWO-AC
Vitocal 350-A, type AWHI
Vitocal 350-A, type AWHO
Chapter 7, page 203
Table of contents
System examples VIESMANN 7
5822 472 GB
1

1.2 Numbering of the technical components and the electrical connections
--230V-- -KM BUS-
--F6-- --F0-- --F8-- --F14--
--212.3-- --211.2-- --211.4--
-2/X3.8;3.9-
2
2
[H
F
[YF
F
--2/F14--
--2/211.2--
-2/145-
A1
--2/X3.8;3.9--
oR
iE
oE oP
oQ
oW
oE
--2/F14--
oEoE
For heat pump control unit Vitotronic 200, type WO1B/WO1C
Note
A CO limiter is available for the safety shutdown of the boiler if carbon
monoxide escapes (see Viessmann pricelist). Installation according to
the relevant installation instructions.
Table of contents (cont.)
8VIESMANN System examples
1
5822 472 GB

2.1 Overview of system examples
Vitocal 222/242/333/343-G, one heating circuit without mixer and DHW
heating (for Vitocal 242/343-G also solar)
Vitocal 333/343-G, one heating circuit without mixer, two heating cir-
cuits with mixer, DHW heating (for Vitocal 343-G also solar) and heating
water buffer cylinder
See page 10 See page 30
ID: 4605087_1304_05 ID: 4605089_1304_05
Vitocal 333-G NC, one heating circuit without mixer, DHW heating and
natural cooling
Vitocal 333/343-G, one heating circuit without mixer, two heating cir-
cuits with mixer, DHW heating (for Vitocal 343-G also solar), heating
water buffer cylinder and natural cooling
See page 15 See page 36
ID: 4605088_1304_07 ID: 4605090_1304_05
Vitocal 222/242/333/343-G, one heating circuit without mixer, DHW
heating (for Vitocal 242/343-G also solar) plus natural cooling
Vitocal 333/343-G, one heating circuit without mixer for supply air heat-
ing, two heating circuits with mixer, DHW heating (for Vitocal 343-G also
solar), heating water buffer cylinder and natural cooling
See page 20 See page 44
ID: 4605086_1304_05 ID: 4605509_1304_01
Vitocal 222/242-G, one heating circuit without mixer, one heating circuit
with mixer, DHW heating (for Vitocal 242-G also solar) and heating wa-
ter buffer cylinder
See page 25
ID: 4605091_1304_05
Vitocal 222-G/242-G/333-G/333-G NC/343-G
System examples VIESMANN 9
5822 472 GB
2

2.2 Vitocal 222/242/333/343-G, one heating circuit without mixer and DHW heating (for
Vitocal 242/343-G also solar)
ID: 4605087_1304_05
Note
DHW heating with solar backup is only possible with the
Vitocal 242/343-G.
A system volume of at least 3 litres per kW of heat pump output is
required.
Application range
Detached house with underfloor heating system.
Main components
■ Vitocal 222/242/333/343-G with integral DHW cylinder and
Vitotronic 200, type WO1C
■ Heating circuit distributor with heating circuit without mixer
■ Solar thermal system (option, only with the Vitocal 242/343-G)
Requirements
The minimum flow rate of heat pump 1 is safeguarded by overflow
valve oW and the integral secondary pump. In these heating systems,
install an overflow valve at the heating circuit distributor of the under-
floor heating system. This safeguards a minimum volume of circulating
water, even in sealed heating circuits.
Central heating by heat pump
Heat pump 1 and the integral primary pump start if the actual tem-
perature captured by the return temperature sensor in the secondary
circuit is lower than the temperature set at control unit 2 or for DHW
heating.
Heat pump 1 supplies the heating circuit with heat. Control unit 2
of heat pump 1 regulates the heating water flow temperature and
thereby the heating circuit. The integral secondary pump delivers the
heating water via a 3-way diverter valve either to the heating circuit or
to the integral DHW cylinder.
Opening and closing the valves of the underfloor heating distributor
regulates the flow rate within the heating circuit. Heat pump 1 and
the secondary pump are switched off once the actual return tempera-
ture at the return temperature sensor exceeds the temperature set at
the control unit.
DHW heating by heat pump
In the delivered condition, DHW heating by heat pump 1 is given
priority over the heating circuit and takes precedence at night.
The heat demand is issued via the integral cylinder temperature sensor
and the control unit, which controls the integral secondary pump in
conjunction with the integral 3-way diverter valve and, in the case of
the Vitocal 242/343-G, the cylinder loading pump.
The control unit raises the flow temperature to the value required for
DHW heating.
The control unit switches the heating flow to the heating circuit via 3-
way diverter valve "Heating/DHW" if the actual temperature at the cyl-
inder temperature sensor exceeds the value set at the control unit.
The flow temperature can be raised up to 60 °C via integral instanta-
neous heating water heater 4.
DHW heating with solar backup (only for Vitocal 242/343-G)
The DHW cylinder will be heated by the solar collector if the temper-
ature differential between collector temperature sensor rR and the
integral lower cylinder temperature sensor exceeds the temperature
differential set at the control unit. For this, the heat pump control unit
controls solar circuit pump rE which is integrated into Solar-Divicon
rW.
The control unit stops solar circuit pump rE again if the temperature
falls below the temperature differential.
Required parameter settings
ID: 4605087_1304_05
Parameter Value Function
7000 2 With heating circuit A1/HC1, DHW cylinder (delivered condition)
7A00 3 Solar control module, type SM1
C002 2 Variable speed solar circuit pump with PWM activation
Vitocal 222-G/242-G/333-G/333-G NC/343-G (cont.)
10 VIESMANN System examples
2
5822 472 GB

Hydraulic installation scheme ID: 4605087_1304_05
43
42
44
45
P1
21
20
22
27
49
90
KW
WW
94
91
--2/X3.8;3.9--
37
--2/212.3--
4
1
12
13
3
2
P1
--X3.8;3.9--
--212.3--
--211.2--
--230V--
--F0--
--KM BUS--
--2/211.2--
--2/F0--
--47/6--
----47/24--
92
--2/145--
A1
41
--47/24--
rU
--230V--
--24--
--5-- --6--
48
--47/5--
Note: This scheme is a general example without shut-off valves or safety equipment. This does not replace the need for on-site engineering.
Vitocal 222-G/242-G/333-G/333-G NC/343-G (cont.)
System examples VIESMANN 11
5822 472 GB
2

Equipment required
ID: 4605087_1304_05
Pos. Designation Part no.
Heat source
1
2
Compact heat pump Vitocal 222/242/333/343-G with:
– Integral control unit
– Primary pump
– Secondary pump
– 3-way diverter valve for "Central heating/DHW heating"
– Cylinder loading pump (only 242/343-G)
– DHW cylinder
– Cylinder temperature sensor
See Viessmann pricelist
3Outside temperature sensor ATS Standard delivery pos. 1
4Instantaneous heating water heater Standard delivery pos. 1
qW Safety assembly Standard delivery pos. 1
qE Expansion vessel, heating circuit See Vitoset pricelist
Primary circuit
wP Brine accessory pack ZK00 300
wQ Pressure switch, primary circuit 9532 663
wW Brine distributor for geothermal probes/geothermal collectors See Viessmann pricelist
wU Geothermal probe/geothermal collector on site
DHW heating
eU Connection set with DHW circulation pump ZP 7440 932
DHW heating with a solar thermal system
rQ High limit safety cut-out STB 7506 168
rW Solar-Divicon, type PS10 with integral solar control module, type SM1 rU
or
Solar-Divicon, type PS20 without control unit with separate solar control module, type SM1 rU
Z012 016
Z012 027
rE Solar circuit pump Standard delivery pos. 42
rR Collector temperature sensor KOL Standard delivery pos. 47
rT Solar collector See Viessmann pricelist
rZ Junction box on site
rU Solar control module, type SM1 7429 073
rI Cylinder temperature sensor SOL Standard delivery pos. 47
rO Expansion vessel, solar circuit See Viessmann pricelist
Heating circuit without mixer A1
oP Underfloor heating circuit See Vitoset pricelist
oW Overflow valve on site
oR Temperature limiter to restrict the maximum temperature of underfloor heating systems
– Version with immersion sensor
or
7151 728
– Version with contact sensor 7151 729
Accessories (optional)
8KM BUS distributor (if there is more than one KM BUS subscriber) 7415 028
zU Radio clock receiver 7450 563
oQ Vitotrol 200A remote control Z008 341
oT Vitotrol 300B remote control Z011 411
The following wireless accessories are available as an alternative to hardwired remote control
units:
oO – Wireless base station
– Vitotrol 200 RF wireless remote control
– Wireless outside temperature sensor
– Wireless repeater
Z011 413
Z011 219
7455 213
7456 538
oI LON communication module 7172 173
qXP Vitocom 100, type GSM 2 Z011 396 / Z011 388
qXQ Vitocom 100, type LAN 1 with communication module Z011 224
qXW Vitocom 200, type LAN 2 with communication module Z011 390
qXE Vitocom 200, type GP 3 with communication module with SIM card Z011 392
Vitocal 222-G/242-G/333-G/333-G NC/343-G (cont.)
12 VIESMANN System examples
2
5822 472 GB

Electrical installation scheme
230 V/50 Hz
2
211.2
X2.N
X1. UP A1
212.3
X2.N
X1. ZP 37
136
L3
N
L2
L1
137
4
3 / N / PE
400 V, 50 Hz
94
X1.1
X2.1
X3.18
230 V/50 Hz
N
L1
X3.8
X1. 230 V; 0.5 A 21
X3.9
<16A
130 W
50 W
X2.N
211.3
224.4
16A
A
B
20
Low voltage
1
2
145
F0
ATS 3
67
NTC 10 kΩ
1
2
3
LON
98
121 / 122 / 123
2
2
1HC A1 oT oO
oQ
KM BUS
145
145
KM BUS distributor
145
qXP
8
STB
KOL
SOL
L
N
L
N
3
4
1
2
145
40
24
22
6
5
1
2
PWM
SM1
3
4
1
2
7
10
1
2
rU
rI
rR
rE
rQ
L
N
UP
230 V, 50 Hz
145
M
1~
M
1~
1
3
2
1
3
2
1
3
2
M
1~
1
3
2
ID: 4605087_1304_05
Note
Instantaneous heating water heater 4 is prefitted and wired.
Vitocal 222-G/242-G/333-G/333-G NC/343-G (cont.)
System examples VIESMANN 13
5822 472 GB
2

L1
1 / N / PE
230 V/50 Hz
F1 6.3A slow
18 L1
N
Mains terminals for heat pump control unit
Compressor power supply 400 V
L3 3 / PE
400 V, 50 Hz
L3
N
L1
L1
L2 L2
2
<16A
ID: 4605087_1304_05
VMains terminals for compressor 400 V
N
1 / N / PE
230 V/ 50 Hz
N
N
L1
L1
L1
N1
N1
N1
L1
L1
L1
PE
PE
ID: 4605087_1304_05
Instantaneous heating water heater 230 V power supply (only for
Vitocal 222-G/242-G)
3 / N / PE
400 V/ 50 Hz
N
L2
L3
L1
N2
L2
L3
L1
N3
N1
PE
PE
ID: 4605087_1304_05
Power supply, instantaneous heating water heater 400 V
Vitocal 222-G/242-G/333-G/333-G NC/343-G (cont.)
14 VIESMANN System examples
2
5822 472 GB

2.3 Vitocal 333-G BWT-NC, one heating circuit without mixer, DHW heating and natural
cooling
ID: 4605088_1304_07
Note
A system volume of at least 3 litres per kW of heat pump output is
required.
Application range
Detached house with underfloor heating system and cooling
demand.
Main components
■ Vitocal 333-G BWT-NC with integral DHW cylinder and
Vitotronic 200, type WO1C
■ Heating circuit distributor with heating circuit without mixer
■ Cooling with integral NC module
Requirements
The minimum flow rate of heat pump 1 is safeguarded by overflow
valve oW and the integral secondary pump. In these heating systems,
install an overflow valve at the heating circuit distributor of the under-
floor heating system. This safeguards a minimum volume of circulating
water, even in sealed heating circuits.
Note
Vitocal 333-G BWT-NC cannot be operated in conjunction with a heat-
ing water buffer cylinder.
Central heating by heat pump
Heat pump 1 and the integral primary pump start if the actual tem-
perature captured by the return temperature sensor in the secondary
circuit is lower than the temperature set at control unit 2 or for DHW
heating.
Heat pump 1 supplies the heating circuit with heat. Control unit 2
of heat pump 1 regulates the heating water flow temperature and
thereby the heating circuit. The integral secondary pump delivers the
heating water via a 3-way diverter valve either to the heating circuit or
to the integral DHW cylinder.
Opening and closing the valves of the underfloor heating distributor
regulates the flow rate within the heating circuit. Heat pump 1 and
the secondary pump are switched off once the actual return tempera-
ture at the return temperature sensor exceeds the temperature set at
the control unit.
DHW heating by heat pump
In the delivered condition, DHW heating by heat pump 1 is given
priority over the heating circuit and takes precedence at night.
The heat demand is issued via the integral cylinder temperature sensor
and the control unit, which controls the integral secondary pump in
conjunction with the integral 3-way diverter valve.
The control unit raises the flow temperature to the value required for
DHW heating.
The control unit switches the heating flow to the heating circuit via 3-
way diverter valve "Heating/DHW" if the actual temperature at the cyl-
inder temperature sensor exceeds the value set at the control unit.
The flow temperature can be raised > 60 °C via integral instantaneous
heating water heater 4.
Natural cooling function
The Vitocal 333-G BWT-NC can cool the building. Control unit 2
enables the natural cooling function as soon as the outside tempera-
ture exceeds the cooling limit temperature that can be adjusted at
control unit 2. The integral 3-way diverter valves "Heating/cooling"
are switched to cooling, and the integral secondary pump transports
cooled water into the secondary circuit.
Contact humidistat iE monitors the dew point. Ensure that any instal-
led room thermostats are able to be opened manually or by servomo-
tors when using the cooling function.
Simultaneous DHW heating is not possible in this operating mode.
Required parameter settings
ID: 4605088_1304_07
Parameter Value Function
7000 2 With heating circuit A1/HC1, DHW cylinder (delivered condition)
7103 180 Min. flow temperature, cooling
7104 50 Influence room temperature hook-up cooling circuit
7111 4 Cooling curve slope
2003 1 Vitotrol 200A or 300B remote control activated for heating circuit A1/HC1
Vitocal 222-G/242-G/333-G/333-G NC/343-G (cont.)
System examples VIESMANN 15
5822 472 GB
2

Hydraulic installation scheme ID: 4605088_1304_07
P1
21
20
22
27
90
KW
WW
94
--2/X3.8;3.9--
37
--2/212.3--
4
1
12
13
3
2
P1
--X3.8;3.9--
--211.2-- --211.5-- --212.3--
--230V--
--X4.1;2-- --F0-- --F14-- --KM BUS--
--2/211.2--
83
--2/X4.1;2--
89
--2/F14--
91
92
--2/145--
A1
8
--145-- --145-- --145-- --145--
--230V--
--R1-6--
--2/211.5--
qCP
qCQ --130/R1-6--
Note: This scheme is a general example without shut-off valves or safety equipment. This does not replace the need for on-site engineering.
Vitocal 222-G/242-G/333-G/333-G NC/343-G (cont.)
16 VIESMANN System examples
2
5822 472 GB

Equipment required
ID: 4605088_1304_07
Pos. Designation Part no.
Heat source
1
2
Compact heating centre Vitocal 333-G, type BWT-NC, with:
– Integral control unit
– Primary pump
– Secondary pump
– 3-way diverter valve for "Central heating/DHW heating"
– Integral components for natural cooling
– DHW cylinder
– Cylinder temperature sensor
See Viessmann pricelist
3Outside temperature sensor ATS Standard delivery pos. 1
4Instantaneous heating water heater Standard delivery pos. 1
qW Safety assembly Standard delivery pos. 1
qE Expansion vessel, heating circuit See Vitoset pricelist
Primary circuit
wP Brine accessory pack ZK00 300
wQ Pressure switch, primary circuit 9532 663
wW Brine distributor for geothermal probes/geothermal collectors See Viessmann pricelist
wU Geothermal probe/geothermal collector on site
DHW heating
eU Connection set with DHW circulation pump ZP 7440 932
Natural cooling function (NC)
iE Contact humidistat Standard delivery pos. 1
iO Flow temperature sensor VTS NC 7426 463
Heating/cooling circuit without mixer A1
oP Underfloor heating circuit/cooling circuit See Vitoset pricelist
oQ Vitotrol 200A remote control
or
Z008 341
oT Vitotrol 300B remote control Z011 411
The following wireless accessories are available as an alternative to hardwired remote control
units:
oO – Wireless base station
– Vitotrol 200 RF wireless remote control
– Wireless outside temperature sensor
– Wireless repeater
Z011 413
Z011 219
7455 213
7456 538
oW Overflow valve on site
oR Temperature limiter to restrict the maximum temperature of underfloor heating systems
– Version with immersion sensor
or
7151 728
– Version with contact sensor 7151 729
qCP Connection module with single room control, heating/cooling with pump logic 7247 845
qCQ Room thermostat (installation on finished walls), heating/cooling RTR-E 6726 7247 853
qCW Thermal actuator TS 5.11/230 (N/C, cores can be interchanged)
or
Thermal actuator TS+ 5.11/230 (N/C, cores can be interchanged)
7373 722
7419 860
Accessories (optional)
8KM BUS distributor 7415 028
zU Radio clock receiver 7450 563
oI LON communication module 7172 173
qXP Vitocom 100, type GSM 2 Z011 396 / Z011 388
qXQ Vitocom 100, type LAN 1 with communication module Z011 224
qXW Vitocom 200, type LAN 2 with communication module Z011 390
qXE Vitocom 200, type GP 3 with communication module with SIM card Z011 392
Vitocal 222-G/242-G/333-G/333-G NC/343-G (cont.)
System examples VIESMANN 17
5822 472 GB
2

Electrical installation scheme
230 V/50 Hz
2
211.2
X2.N
X1. UP A1
212.3
X2.N
X1. ZP 37
136
L3
N
L2
L1
137
4
3 / N / PE
400 V, 50 Hz
94
X1.1
X2.1
X3.18
230 V/50 Hz
N
L1
X3.8
X1. 230 V; 0.5 A 21
X3.9
<16A
130 W
50 W
X2.N
211.3
224.4
16A
A
B
20
Low voltage
VTS NC 89
F14
1
2
145
F0
ATS 3
67
NTC 10 kΩ
1
2
3
LON
98
121 / 122 / 123
2
2
1HC A1 oT oO
oQ
KM BUS
145
145
KM BUS distributor
145
qXP
8
211.5
X2.N
X1.
N
L1
NC module 2
NTC 10 kΩ
145
145
2
X4.2
X4.1 83
X2.4
X5.
X2.3
X2.2
X5.
X2.1
NC module
230 V/50 Hz
N
L1
211.5
N
L1
2
1
2
FAS
AM qCP
M
1~
M
1~
1
3
2
1
3
2
1
3
2
1
3
2
ID: 4605088_1304_07
Note
Instantaneous heating water heater 4 is prefitted and wired.
Control of the NC function for cooling is already complete inside the
appliance.
Vitocal 222-G/242-G/333-G/333-G NC/343-G (cont.)
18 VIESMANN System examples
2
5822 472 GB

Connection changeover heating/cooling circuit "Heating/cool-
ing" via switching module
AM heat/cool
qCP
R6
211.5
2
1
3
4
5
6
7
8
9
c
d
e
f
230 V/50 Hz
3
5
2
1
N
NRF
TA
M
1~ STA
M
1~ STA
RTH qCQ
qCW
qCW
2
R1
ID: 4605088_1304_07
L1
1 / N / PE
230 V/50 Hz
F1 6.3A slow
18 L1
N
Mains terminals for heat pump control unit
Compressor power supply 400 V
L3 3 / PE
400 V, 50 Hz
L3
N
L1
L1
L2 L2
2
<16A
ID: 4605088_1304_07
VMains terminals for compressor 400 V
3 / N / PE
400 V/ 50 Hz
N
L2
L3
L1
N2
L2
L3
L1
N3
N1
PE
PE
ID: 4605088_1304_07
Power supply, instantaneous heating water heater 400 V
Vitocal 222-G/242-G/333-G/333-G NC/343-G (cont.)
System examples VIESMANN 19
5822 472 GB
2

2.4 Vitocal 222/242/333/343-G, one heating circuit without mixer, DHW heating (for
Vitocal 242/343-G also solar) plus natural cooling
ID: 4605086_1304_05
Note
DHW heating with solar backup is only possible with the
Vitocal 242/343-G.
A system volume of at least 3 litres per kW of heat pump output is
required.
This scheme is not suitable for the Vitocal 333-G NC.
Application range
Detached house with underfloor heating system and cooling
demand.
Main components
■ Vitocal 222/242/333/343-G with integral DHW cylinder and
Vitotronic 200, type WO1C
■ Heating circuit distributor with heating circuit without mixer
■ Cooling with NC-Box
■ Solar thermal system (option, only with the Vitocal 242/343-G)
Requirements
The minimum flow rate of heat pump 1 is safeguarded by overflow
valve oW and the integral secondary pump. In these heating systems,
install an overflow valve at the heating circuit distributor of the under-
floor heating system that is furthest away from the heat pump. This
safeguards a minimum volume of circulating water, even in sealed
heating circuits.
Central heating by heat pump
Heat pump 1 and the integral primary pump start if the actual tem-
perature captured by the return temperature sensor in the secondary
circuit is lower than the temperature set at control unit 2 or for DHW
heating.
Heat pump 1 supplies the heating circuit with heat. Control unit 2
of heat pump 1 regulates the heating water flow temperature and
thereby the heating circuit. The integral secondary pump delivers the
heating water via a 3-way diverter valve either to the heating circuit or
to the integral DHW cylinder.
Opening and closing the valves of the underfloor heating distributor
regulates the flow rate within the heating circuit. Heat pump 1 and
the secondary pump are switched off once the actual return tempera-
ture at the return temperature sensor exceeds the temperature set at
the control unit.
DHW heating by heat pump
In the delivered condition, DHW heating by heat pump 1 is given
priority over the heating circuit and takes precedence at night.
The heat demand is issued via the integral cylinder temperature sensor
and the control unit, which controls the integral secondary pump in
conjunction with the integral 3-way diverter valve and, in the case of
the Vitocal 242/343-G, the cylinder loading pump.
The control unit raises the flow temperature to the value required for
DHW heating.
The control unit switches the heating flow to the heating circuit via 3-
way diverter valve "Heating/DHW" if the actual temperature at the cyl-
inder temperature sensor exceeds the value set at the control unit.
The flow temperature can be raised > 60 °C via integral instantaneous
heating water heater 4.
DHW heating with solar backup (only for Vitocal 242/343-G)
The DHW cylinder will be heated by the solar collector if the temper-
ature differential between collector temperature sensor rR and the
integral lower cylinder temperature sensor exceeds the temperature
differential set at the control unit. For this, the heat pump control unit
controls solar circuit pump rE which is integrated into Solar-Divicon
rW.
The control unit stops solar circuit pump rE again if the temperature
falls below the temperature differential.
Natural cooling function
The building can be cooled with the heat pump in conjunction with NC-
Box iP (accessories). Control unit 2 enables the natural cooling
function as soon as the outside temperature exceeds the cooling limit
temperature that can be adjusted at control unit 2. This enables the
components of NC-Box iP. The cooling circuit pumps iW and iR
operate continuously. The NC-Box with mixer operates in accordance
with a cooling curve. The mixer on the brine side ensures a continuous,
demand-dependent utilisation of the primary source.
Contact humidistat iE monitors the dew point (part of the NC-Box
standard delivery). Ensure that any installed room thermostats are
able to be opened manually or by servomotors when using the cooling
function.
Required parameter settings
ID: 4605086_1304_05
Parameter Value Function
7000 2 With heating circuit A1/HC1, DHW cylinder (delivered condition)
7A00 3 Solar control module, type SM1
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
C002 2 Variable speed solar circuit pump with PWM activation
2003 1 Vitotrol 200A or 300B remote control activated for heating circuit A1/HC1
Vitocal 222-G/242-G/333-G/333-G NC/343-G (cont.)
20 VIESMANN System examples
2
5822 472 GB

Hydraulic installation scheme ID: 4605086_1304_05
43
42
44
45
P1
21
20
22
27
49
90
KW
WW
94
--2/X3.8;3.9--
37
--2/212.3--
4
1
12
13
3
2
P1
--X3.8;3.9--
--211.2-- --211.5-- --212.3--
--230V--
--F0-- --F14-- --KM BUS--
--2/211.2--
--2/F0--
--47/6--
----47/24--
89
--2/F14--
83
--80/X4.1;2--
85
84 82 81
80
--2/211.5--
91
92
--8/145--
8
--145-- --145-- --145-- --145--
A1
41
--47/24--
rU
--230V--
--24--
--5-- --6--
48
--47/5--
--230V--
--R1-6--
--2/211.5--
qCP
qCQ --130/R1-6--
Note: This scheme is a general example without shut-off valves or safety equipment. This does not replace the need for on-site engineering.
Equipment required
ID: 4605086_1304_05
Pos. Designation Part no.
Heat source
1
2
Compact heat pump Vitocal 222/242/333/343-G with:
– Integral control unit
– Primary pump
– Secondary pump
– 3-way diverter valve for "Central heating/DHW heating"
– Cylinder loading pump (only 242/343-G)
– DHW cylinder
– Cylinder temperature sensor
See Viessmann pricelist
3Outside temperature sensor ATS Standard delivery pos. 1
4Instantaneous heating water heater Standard delivery pos. 1
qW Safety assembly Standard delivery pos. 1
qE Expansion vessel, heating circuit See Vitoset pricelist
Vitocal 222-G/242-G/333-G/333-G NC/343-G (cont.)
System examples VIESMANN 21
5822 472 GB
2

ID: 4605086_1304_05
Pos. Designation Part no.
Primary circuit
wP Brine accessory pack ZK00 300
wQ Pressure switch, primary circuit 9532 663
wW Brine distributor for geothermal probes/geothermal collectors See Viessmann pricelist
wU Geothermal probe/geothermal collector on site
DHW heating
eU Connection set with DHW circulation pump ZP 7440 932
DHW heating with a solar thermal system
rQ High limit safety cut-out STB 7506 168
rW Solar-Divicon, type PS10 with integral solar control module, type SM1 rU
or
Solar-Divicon, type PS20 without control unit with separate solar control module, type SM1 rU
Z012 016
Z012 027
rE Solar circuit pump Standard delivery pos. 42
rR Collector temperature sensor KOL Standard delivery pos. 47
rT Solar collector See Viessmann pricelist
rZ Junction box on site
rU Solar control module, type SM1 7429 073
rI Cylinder temperature sensor SOL Standard delivery pos. 47
rO Expansion vessel, solar circuit See Viessmann pricelist
Natural cooling function (NC)
iP NC-Box with mixer 7462 054
iQ 3-way diverter valve Standard delivery pos. 80
iW Secondary cooling circuit pump Standard delivery pos. 80
iE Contact humidistat Standard delivery pos. 80
iR Primary cooling circuit pump Standard delivery pos. 80
iT Cooling circuit mixer/mixer motor on the primary side Standard delivery pos. 80
iO Flow temperature sensor VTS NC Standard delivery pos. 80
Heating/cooling circuit without mixer A1
oP Underfloor heating circuit/cooling circuit See Vitoset pricelist
oQ Vitotrol 200A remote control Z008 341
oT Vitotrol 300B remote control Z011 411
The following wireless accessories are available as an alternative to hardwired remote control
units:
oO – Wireless base station
– Vitotrol 200 RF wireless remote control
– Wireless outside temperature sensor
– Wireless repeater
Z011 413
Z011 219
7455 213
7456 538
oW Overflow valve on site
oR Temperature limiter to restrict the maximum temperature of underfloor heating systems
– Version with immersion sensor
or
7151 728
– Version with contact sensor 7151 729
qCP Connection module with single room control, heating/cooling with pump logic 7247 845
qCQ Room thermostat (installation on finished walls), heating/cooling RTR-E 6726 7247 853
qCW Thermal actuator TS 5.11/230 (N/C, cores can be interchanged)
or
Thermal actuator TS+ 5.11/230 (N/C, cores can be interchanged)
7373 722
7419 860
Accessories (optional)
8KM BUS distributor (if there is more than one KM BUS subscriber) 7415 028
zU Radio clock receiver 7450 563
oI LON communication module 7172 173
qXP Vitocom 100, type GSM 2 Z011 396 / Z011 388
qXQ Vitocom 100, type LAN 1 with communication module Z011 224
qXW Vitocom 200, type LAN 2 with communication module Z011 390
qXE Vitocom 200, type GP 3 with communication module with SIM card Z011 392
Vitocal 222-G/242-G/333-G/333-G NC/343-G (cont.)
22 VIESMANN System examples
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5822 472 GB

Electrical installation scheme
230 V/50 Hz
2
211.2
X2.N
X1. UP A1
212.3
X2.N
X1. ZP 37
136
L3
N
L2
L1
137
4
3 / N / PE
400 V, 50 Hz
94
X1.1
X2.1
X3.18
230 V/50 Hz
N
L1
X3.8
X1. 230 V; 0.5 A 21
X3.9
<16A
130 W
50 W
X2.N
211.3
224.4
16A
A
B
20
Low voltage
VTS NC 89
F14
1
2
145
F0
ATS 3
67
NTC 10 kΩ
1
2
3
LON
98
121 / 122 / 123
2
2
1HC A1 oT oO
oQ
KM BUS
145
145
KM BUS distributor
145
qXP
8
211.5
X2.N
X1.
N
L1
NC module 2
NTC 10 kΩ
145
145
2
X4.2
X4.1 83
X2.4
X5.
X2.3
X2.2
X5.
X2.1
NC module
230 V/50 Hz
N
L1
211.5
N
L1
2
1
2
FAS
STB
KOL
SOL
L
N
L
N
3
4
1
2
145
40
24
22
6
5
1
2
PWM
SM1
3
4
1
2
7
10
1
2
rU
rI
rR
rE
rQ
L
N
UP
230 V, 50 Hz
145
AM qCP
M
1~
M
1~
1
3
2
1
3
2
1
3
2
1
3
2
M
1~
1
3
2
ID: 4605086_1304_05
Vitocal 222-G/242-G/333-G/333-G NC/343-G (cont.)
System examples VIESMANN 23
5822 472 GB
2

Connection changeover heating/cooling circuit "Heating/cool-
ing" via switching module
AM heat/cool
qCP
R6
211.5
2
1
3
4
5
6
7
8
9
c
d
e
f
230 V/50 Hz
3
5
2
1
N
NRF
TA
M
1~ STA
M
1~ STA
RTH qCQ
qCW
qCW
2
R1
ID: 4605086_1304_05
Note
Instantaneous heating water heater 4 is prefitted and wired.
L1
1 / N / PE
230 V/50 Hz
F1 6.3A slow
18 L1
N
Mains terminals for heat pump control unit
Compressor power supply 400 V
L3 3 / PE
400 V, 50 Hz
L3
N
L1
L1
L2 L2
2
<16A
ID: 4605086_1304_05
VMains terminals for compressor 400 V
N
1 / N / PE
230 V/ 50 Hz
N
N
L1
L1
L1
N1
N1
N1
L1
L1
L1
PE
PE
ID: 4605086_1304_05
Instantaneous heating water heater 230 V power supply (only for
Vitocal 222-G/242-G)
3 / N / PE
400 V/ 50 Hz
N
L2
L3
L1
N2
L2
L3
L1
N3
N1
PE
PE
ID: 4605086_1304_05
Power supply, instantaneous heating water heater 400 V
Vitocal 222-G/242-G/333-G/333-G NC/343-G (cont.)
24 VIESMANN System examples
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5822 472 GB

2.5 Vitocal 222/242-G, one heating circuit without mixer, one heating circuit with mixer,
DHW heating (for Vitocal 242-G also solar) and heating water buffer cylinder
ID: 4605091_1304_05
Note
DHW heating with solar backup is only possible with the
Vitocal 242-G.
Application range
Detached house with up to two heating circuits with different utilisation
patterns (different heating circuit design layouts).
Main components
■ Vitocal 222/242-G with integral DHW cylinder and Vitotronic 200,
type WO1C
■ Heating circuit distributor with one heating circuit without mixer and
one heating circuit with mixer (controlled via KM BUS)
■ Heating water buffer cylinder
■ Solar thermal system (option, only with the Vitocal 242-G)
Requirements
The minimum flow rate of heat pump 1 is safeguarded via heating
water buffer cylinder zP and the integral secondary pump. It is possible
to use differential pressure-dependent heating circuit pumps uZ and
oZ.
Central heating by heat pump
Heat pump 1 and the integral primary pump start when the actual
temperature captured by cylinder temperature sensor zQ of heating
water buffer cylinder zP falls below the set temperature selected at
control unit 2.
Heat pump 1 supplies the heating circuit with heat. Control unit 2
of heat pump 1 regulates the heating water flow temperature and
thereby the heating circuits. The integral secondary pump delivers the
heating water via a 3-way diverter valve either to heating water buffer
cylinder zP or to the integral DHW cylinder.
Heating circuit pumps uZ and oZ deliver the required water volume to
the heating circuits. The heating circuit flow rate is regulated by open-
ing and closing the thermostatic radiator valves or the underfloor dis-
tributor valves and/or through an external heating circuit control unit.
Heat pump 1 and the integral secondary pump are switched off once
the actual return temperature at the return temperature sensor
exceeds the temperature set at the control unit.
To balance the difference in energy between the primary and secon-
dary circuits, operate heating water buffer cylinder zP in parallel to the
heating circuits. Any heat not absorbed by the heating circuits is stored
in heating water buffer cylinder zP. In addition, heat pump 1 achieves
long runtimes.
During the power-OFF period, the heating circuits will be supplied with
heat from heating water buffer cylinder zP.
DHW heating by heat pump
In the delivered condition, DHW heating by heat pump 1 is given
priority over the heating circuits and takes precedence at night.
The heat demand is issued via the integral cylinder temperature sensor
and the control unit, which controls the integral secondary pump in
conjunction with the integral 3-way diverter valve and, in the case of
the Vitocal 242, the cylinder loading pump.
The control unit raises the flow temperature to the value required for
DHW heating.
The control unit switches the heating flow to the heating circuit via 3-
way diverter valve "Heating/DHW" if the actual temperature at the cyl-
inder temperature sensor exceeds the value set at the control unit.
The flow temperature can be raised > 60 °C via integral instantaneous
heating water heater 4.
DHW heating with solar backup (only for Vitocal 242-G)
The DHW cylinder will be heated by the solar collector if the temper-
ature differential between collector temperature sensor rR and the
integral lower cylinder temperature sensor exceeds the temperature
differential set at the control unit. For this, the heat pump control unit
controls solar circuit pump rE which is integrated into Solar-Divicon
rW.
The control unit stops solar circuit pump rE again if the temperature
falls below the temperature differential.
Required parameter settings
ID: 4605091_1304_05
Parameter Value Function
7000 6 With heating circuit A1/HC1, M2/HC2, DHW cylinder
7A00 3 Solar control module, type SM1
C002 2 Variable speed solar circuit pump with PWM activation
Vitocal 222-G/242-G/333-G/333-G NC/343-G (cont.)
System examples VIESMANN 25
5822 472 GB
2