Viessmann BWC 201.B Manuale di istruzioni

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.

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

6152053

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

■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

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

6152053

■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

6152053

Service

2.2

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

-PE1

U1 V1 W1 PE

-M1

R S T

U V W

X11 2 3 7

L1 L2 L3

2.6

-N

-PE

2.5

2.6 4.5

3/N/PE

400 V/50 Hz

2.7

-F7

2.7

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

2a.6

4.5

2a.2

2a.5

0 1 2 3 4 5 6 7 8 9

viesmann Compressor 230 V

Sheet 1a

-X41 L1 N PE

L1 N PE

-PE1

C R S PE

-M1

-C1

-K1

-F6

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

1.51.5

0 1 2 3 4 5 6 7 8 9

viesmann Heat pump control unit power supply

Sheet 2

-X42 2 3

-F2

6.3 A

L N PE

-S5 23

-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

X3 1 1 3 8 9 6 7 12 13 2 14

X10 2 3 4

X11 6

-PE

4.5

BN GY

BK BU

4.4 4.4 4.4

E F

4.5

-N

4.2

-N 1.5

-N

4.5

1.5

3.2

3.1

3.0

-X42 2 3

-F2

6.3 A

L N PE

-S5 23

-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

X3 1 1 8 9 6 7 12 13 2 14

X10 2 3 4

X11 6

-PE

4.5

BN GY

BK BU

4.4 4.4 4.4

4.5

-N

4.2

-N 1.5

-N

4.5

1.5

3.2

3.1

3.0 P

1.6

4.5

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

0 1 2 3 4 5 6 7 8 9

viesmann Heat pump control unit power supply

Sheet 2a

-X42 2 3

-F2

6.3 A

L N PE

-S5

-X2 12 3 4 5 6 7 8 9 10 11 12

-X1 1 2 3 4 5 6 7 8 9 1011 12

X3 1 1 3 8 9 6 7 12 13 2 14

-K1

X11 61

X10 2 3 4

BN GY

BK BU

4.5

4.4 4.4 4.4

F G H

4.5K

4.5

1a.5

3.0

3.1

3.2

4.2

1a.5

14/1.a.6

4.5

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

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