Viessmann BWC 201.B Manuel d'instructions
Connection and wiring diagram
for contractors
VIESMANN
Vitocal 200-G
Type BWC 201.B, 400 V~
Type BWC-M 201.B, 230 V~
Heat pump with electric drive
■Brine/water heat pump: 5.7 to 17.4 kW
■With conversion kit to water/water heat pump: 7.5 to 22.6 kW
VITOCAL 200-G
6152053 GB 1/2020 Please keep safe.
2
Please follow these safety instruc-
tions closely to prevent accidents
and material losses.
Safety instructions explained
Danger
This symbol warns against the risk
of injury.
!Please note
This symbol warns against the risk
of material losses and environmen-
tal pollution.
Note
Details identified by the word "Note"
contain additional information.
Target group
These instructions are exclusively inten-
ded for authorised contractors.
■Work on the refrigerant circuit may only
be carried out by authorised refrigera-
tion engineers.
■Work on electrical equipment must
only be carried out by a qualified elec-
trician.
■The system must be commissioned by
the system installer or a qualified per-
son authorised by the installer.
Regulations to be observed
■National installation regulations
■Statutory regulations for the prevention
of accidents
■Statutory regulations for environmental
protection
■Codes of practice of the relevant trade
associations
■Relevant country-specific safety regu-
lations
Safety instructions
Safety instructions
6152053
3
Safety instructions for working on the system
Working on the system
■Isolate the system from the power sup-
ply, e.g. by removing the separate fuse
or by means of a mains isolator, and
check that it is no longer live.
Note
In addition to the control circuit there
may be several power circuits.
Danger
Contact with live components can
result in severe injuries. Some
components on PCBs remain live
even after the power supply has
been switched off.
Prior to removing covers from the
appliances, wait at least 4 minutes
until the voltage has completely
dropped out.
■Safeguard the system against recon-
nection.
■Wear suitable personal protective
equipment when carrying out any work.
Danger
Hot surfaces and fluids can lead to
burns or scalding.
■Before maintenance and service
work, switch OFF the appliance
and let it cool down.
■Never touch hot surfaces on the
appliance, fittings or pipework.
Danger
Risk of fire: Electrostatic discharge
can cause sparks which may be
ignited by escaping, flammable
refrigerant (R32).
Prior to commencing work, touch
earthed objects such as heating or
water pipes to discharge static
loads.
!Please note
Electronic assemblies can be dam-
aged by electrostatic discharge.
Prior to commencing work, touch
earthed objects such as heating or
water pipes to discharge static
loads.
Work on the refrigerant circuit
Refrigerants are air displacing, colour-
less, odourless gases.
■R32 forms flammable mixtures with air.
■R410A is not flammable.
Danger
Direct contact with liquid and gas-
eous refrigerant can cause serious
damage to health.
■Avoid direct contact with liquid and
gaseous refrigerant.
■Wear personal protective equip-
ment when handling liquid and
gaseous refrigerant.
Danger
Unregulated escape of refrigerant in
enclosed spaces can lead to
breathing difficulties and suffoca-
tion.
■Never breathe in refrigerant
vapours.
■Ensure adequate ventilation in
enclosed spaces.
Perform the following measures before
beginning work on the refrigerant circuit:
■Check the refrigerant circuit for leaks.
■Ensure very good ventilation especially
in the floor area and sustain this for the
duration of the work.
Safety instructions
Safety instructions (cont.)
6152053
4
■Inform all persons in the vicinity of the
system about the type of work to be
carried out.
■Secure the area surrounding the work
area.
Further measures before starting work
on the refrigerant circuit with flammable
refrigerants (R32):
■Remove all flammable materials and
ignition sources from the immediate
vicinity of the heat pump.
■Before, during and after the work,
check the surrounding area for escap-
ing refrigerant using a suitable refriger-
ant detector.
This refrigerant detector must not gen-
erate any sparks and must be suitably
sealed.
■A CO2 or powder extinguisher must be
to hand in the following cases:
–Refrigerant is being topped up.
–When soldering or welding work is
being carried out.
■Display signs prohibiting smoking.
Danger
Damage to the refrigerant circuit
can cause refrigerant to enter the
hydraulic system. This can cause
serious damage to health.
After completion of the work, pro-
fessionally vent the hydraulic sys-
tem on the primary and secondary
sides.
Repair work
!Please note
Repairing components that fulfil a
safety function can compromise the
safe operation of the system.
Replace faulty components only
with genuine Viessmann spare
parts.
Auxiliary components, spare and
wearing parts
!Please note
Spare and wearing parts that have
not been tested together with the
system can compromise its func-
tion. Installing non-authorised com-
ponents and making non-approved
modifications or conversions can
compromise safety and may invalid-
ate our warranty.
For replacements, use only original
spare parts supplied or approved by
Viessmann.
Safety instructions for operating the system
What to do if water escapes from the
appliance
Danger
If water escapes from the appliance
there is a risk of electrocution.
Switch OFF the heating system at
the external isolator (e.g. fuse box,
domestic distribution board).
Danger
If water escapes from the appliance
there is a risk of scalding.
Never touch hot heating water.
Safety instructions
Safety instructions (cont.)
6152053
5
1. Notes Notes ..................................................................................................... 6
Electrical equipment .............................................................................. 6
2. Connection and wiring dia-
gram
Sheet 1: Compressor 400 V~ ................................................................ 7
Sheet 1a: Compressor 230 V~ .............................................................. 8
Sheet 2: Heat pump control unit power supply 230 V~ ......................... 8
Sheet 2a: Heat pump control unit power supply 230 V~ ....................... 9
Sheet 3: EEV PCB (refrigerant circuit controller [4-7]) ........................... 11
Sheet 4: Main PCB ................................................................................ 12
Sheet 5: Expansion PCB ....................................................................... 13
Sheet 6: Controller and sensor PCB ...................................................... 14
Sheet 7: Instantaneous heating water heater ........................................ 14
Sheet 7b: Instantaneous heating water heater ...................................... 16
Index
Index
6152053
6
■Observe the information on electrical connections in
the installation and service instructions.
■In the case of a power supply with power-OFF
facility, the power to the control circuit (heat pump
control unit) must be supplied without interruption by
the power supply utility.
■Identification of electrical equipment (in accordance
with IEC 81346-2):
Example: /7.5
/ = cross-reference
7. = sheet number
5 = current path
Electrical equipment
B Pressure switch, temperature switch, thermal relay
E Instantaneous heating water heater
F Fuse, thermal relay
J Plug-in connector
K Contactors, relays
M Motor, circulation pump, motorised valve, compressor
N Controller
Q Mains isolator, power contactor, output relay
R Start-up resistor
S Control switch
X Terminals, plugs
Y 3-way diverter valve
Notes
Notes
6152053
Service
7
2.2
B
A
C
D
E
F
G
0 1 2 3 4 5 6 7 8 9
0 1 2 3 4 5 6 7 8 9
viesmann Compressor 400 V
Sheet 1
-X41 L1 L2 L3 N PE
L1 L2 L3 N PE
1
-PE1
U1 V1 W1 PE
-M1
1
2
3
4
5
6
1
2
3
4
5
6
17
18
17
18
17
18
x1
x2
x1
x2
x1
x2
R S T
U V W
A1
A2
Q1
95
96
F4
1
X11 2 3 7
L1 L2 L3
2.6
-N
-PE
-PE
2.5
2.6 4.5
M
3~
~
3/N/PE
400 V/50 Hz
2.7
11
14
-F7
2.7
H
Fig. 1
ACompressor power supply
BMains terminals, compressor
CCompressor contactor
DThermal relay, compressor
EFull wave soft starter
FMale jack, compressor
GCompressor motor
HPhase monitor
Connection and wiring diagram
Sheet 1: Compressor 400 V~
6152053
Service
8
B
A
2a.6
4.5
2a.2
2a.5
C
D
E
F
G
H
K
L
0 1 2 3 4 5 6 7 8 9
0 1 2 3 4 5 6 7 8 9
viesmann Compressor 230 V
Sheet 1a
M
3~
~
-X41 L1 N PE
L1 N PE
1
-PE1
C R S PE
-M1
1
2
3
4
5
6
1
2
3
4
5
6
A1
A2
Q1
95
96
F4
x1
x2
-C1
R
RC
L
N
Uc
S
13
14
-K1
1
2
-F6
1
X11 2 3 7
-N
-PE
1/N/PE
230 V/50 Hz
Fig. 2
ACompressor power supply
BMains terminals, compressor
CCompressor contactor
DThermal relay, compressor
EFuse, control circuit of full wave soft starter
FRelay, control circuit of full wave soft starter
GFull wave soft starter
HRun capacitor
KMale jack, compressor
LCompressor motor
Sheet 2: Heat pump control unit power supply 230 V~
For heat pumps with 400 V~ compressor
Connection and wiring diagram
Sheet 1a: Compressor 230 V~
6152053
Service
9
1.51.5
0 1 2 3 4 5 6 7 8 9
0 1 2 3 4 5 6 7 8 9
viesmann Heat pump control unit power supply
Sheet 2
1
-X42 2 3
1
2
-F2
6.3 A
L N PE
13
14
-S5 23
24
-X2 1 2 3 4 5 6 7 8 9 10 11 12
-X1 1 2 3 4 5 6 7 8 9 10 11 12
11
12
X3 1 1 3 8 9 6 7 12 13 2 14
1
X10 2 3 4
5
X11 6
-PE
4.5
L
N
BN GY
BK BU
D
4.4 4.4 4.4
E F
4.5
4.5
-N
4.2
-N 1.5
-N
C
B
A
4.5
1.5
1.5
3.2
3.2
3.2
3.1
3.0
M
K
L
G
P
1
-X42 2 3
1
2
-F2
6.3 A
L N PE
13
14
-S5 23
24
-X2 1 2 3 4 5 6 7 8 9 10 11 12
-X1 1 2 3 4 5 6 7 8 9 10 11 12
11
12
X3 1 1 8 9 6 7 12 13 2 14
1
X10 2 3 4
5
X11 6
-PE
4.5
L
N
BN GY
BK BU
4.4 4.4 4.4
4.5
4.5
-N
4.2
-N 1.5
-N
C
B
A
4.5
1.5
1.5
3.2
3.2
3.2
3.1
3.0 P
1.6
1.6
4.5
4
H
Fig. 3
AMains terminals, heat pump control unit
BHeat pump control unit fuse 6.3 A (slow)
CHeat pump control unit ON/OFF switch
DPrimary circuit flow switch
EPrimary circuit pressure switch and/or frost stat
FPower-OFF
GExternal demand
HExternal blocking
KPlug, safety chain
LSafety high pressure switch
MMale jack, compressor
Sheet 2a: Heat pump control unit power supply 230 V~
For heat pumps with 230 V~ compressor
Connection and wiring diagram
Sheet 2: Heat pump control unit power supply… (cont.)
6152053
Service
10
0 1 2 3 4 5 6 7 8 9
0 1 2 3 4 5 6 7 8 9
viesmann Heat pump control unit power supply
Sheet 2a
1
-X42 2 3
1
2
-F2
6.3 A
L N PE
13
14
-S5
23
24
-X2 12 3 4 5 6 7 8 9 10 11 12
-X1 1 2 3 4 5 6 7 8 9 1011 12
11
12
X3 1 1 3 8 9 6 7 12 13 2 14
A1
A2
-K1
5
X11 61
X10 2 3 4
L
BN GY
BK BU
4.5
E
4.4 4.4 4.4
F G H
4.5K
4.5
1a.5
1a.5
N
13
P
3.0
3.1
3.2
3.2
3.2
CE
B
A
O
M
N
4.2
4.2
1a.5
L
14/1.a.6
4.5
4
D
Fig. 4
AMains terminals, heat pump control unit
BHeat pump control unit fuse 6.3 A (slow)
CHeat pump control unit ON/OFF switch
DPrimary circuit flow switch
EPrimary circuit pressure switch and/or frost stat
FPower-OFF
GExternal demand
HExternal blocking
KJumper
LRelay, control circuit of full wave soft starter
MPlug, safety chain
NSafety high pressure switch
OMale jack, compressor
Connection and wiring diagram
Sheet 2a: Heat pump control unit power supply… (cont.)
6152053
Service
Ce manuel convient aux modèles suivants
2
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