Viessmann KWT Vitocal 350-G Pro Series Betriebsanleitung

Installation and service

instructions

for contractors

Compact heat pump with electric drive, two-stage and three-stage

Vitocal 350-G Pro

Type BW 352.A027 to BW 353.A198

Type BW 352.A027 SA to BW 353.A198 SA

For applicability, see the last page

VITOCAL 350-G PRO

5848 449 GB 09/2013 Please keep safe.

Please follow these safety instructions closely to prevent accidents and mate-

rial 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 envi-

ronmental pollution.

Note

Details identified by the word "Note" con-

tain additional information.

Target group

These instructions are exclusively inten-

ded for qualified contractors.

■ Work on the refrigerant circuit may

only be carried out by authorised

refrigeration engineers.

■ Work on electrical equipment must

only be carried out by a qualified elec-

trician who have corresponding

authorisation.

■ The system must be commissioned by

the system installer or a qualified per-

son authorised by the installer.

Regulations

Observe the following when working on

this system:

■ National installation regulations

■ Statutory regulations regarding the

prevention of accidents

■ Statutory regulations regarding envi-

ronmental protection

■ The Code of Practice of relevant trade

associations

■ All current safety regulations as

defined by DIN, EN, DVGW, VDE and

all locally applicable standards

aÖNORM, EN and ÖVE

cSEV, SUVA, SVTI, SWKI and

SVGW

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 lead to fatal injury due to

electric shock. Some compo-

nents on the PCBs will remain

'live' even after the power sup-

ply has been switched off.

Prior to removing equipment

covers, wait at least 30 sec-

onds to allow the voltage to dis-

sipate.

■ Safeguard the system against recon-

nection.

Safety instructions

5848 449 GB

!Please note

Electronic assemblies can be

damaged by electrostatic dis-

charge.

Prior to commencing any work,

touch earthed objects, such as

heating or water pipes to dis-

charge static loads.

Repair work

!Please note

Repairing components that fulfil a

safety function can compromise

the safe operation of your sys-

tem.

Replace faulty components 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 function. Installing non-author-

ised components and making

non-approved modifications or

conversions can compromise

safety and may invalidate our

warranty.

For replacements, use only orig-

inal spare parts supplied or

approved by Viessmann.

Safety instructions

Safety instructions (cont.)

5848 449 GB

Installation instructions

Safety and liability

Heat pump application limits................................................................................ 6

Boiler application limits......................................................................................... 6

Occupational safety.............................................................................................. 7

Preparing for installation

Use....................................................................................................................... 10

Product information.............................................................................................. 10

General information on the electrical connection................................................. 11

Delivery and handling........................................................................................... 11

Siting.................................................................................................................... 13

General hydraulic diagram................................................................................... 22

Hydraulic connection, geothermal probe.............................................................. 25

Hydraulic connection, groundwater...................................................................... 26

Hydraulic connection, heating water buffer cylinder............................................. 27

Hydraulic connection, external heat generator..................................................... 27

Hydraulic connection, heating circuits.................................................................. 28

"Natural and active cooling"................................................................................. 29

Hydraulic connection, cooling water buffer cylinder............................................. 30

Hydraulic connection, residual heat heat exchanger........................................... 32

DHW heating........................................................................................................ 33

Installation sequence

Siting the heat pump............................................................................................ 35

Making the hydraulic connections........................................................................ 39

Making the electrical connections........................................................................ 45

Overview of electrical connections....................................................................... 47

Power supply........................................................................................................ 62

Closing the heat pump......................................................................................... 68

Service instructions

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance.......................................... 69

Further details regarding the individual steps....................................................... 70

Troubleshooting

Repairs................................................................................................................. 98

Parts list, type BW

Spare part for part winding start version.............................................................. 102

Spare part for soft starter version......................................................................... 110

Index

5848 449 GB

Appendix

Heat pump commissioning order.......................................................................... 127

Certificates

Declaration of conformity...................................................................................... 128

Keyword index.................................................................................................... 130

Index

Index (cont.)

5848 449 GB

Intended use ■ Generation of cooling and/or heating

■ For use in industry, commerce, domestic

households

■ For power supply systems up to 1000 A and

400 V

System limit See pipework and instrumentation diagram,

connection and wiring diagram

Service life

Heat pump Between 15 and 25 years

Wearing parts (back-up battery

and rechargeable batteries, safety

valve, filter dryer, refrigerant oil,

compressor, filter, oil separator)

4 to 5 years, subject to hours run and operating

point

Boiler application limits

Life cycle stages

Life cycle stages Responsible/participating personnel

Manufacture ■ External personnel

■ Manufacturer

Delivery, moving, handling, siting ■ External personnel

■ Manufacturer

■ Logistics