Viessmann VITOCAL 300-A Mode d'emploi

Installation and service

instructions

for contractors

VIESMANN

Vitocal 300-A

Type AWO-AC 301.B11 to B14

Air/water heat pump with electric drive, 400 V~

For applicability, see the last page

VITOCAL 300-A

5516 436 GB 5/2014 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.

■ 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

■ Codes of practice of the 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 result in severe injuries.

Some components on the

PCBs will remain 'live' even

after the power supply has

been switched off.

Prior to removing equipment

covers, wait at least 4 min. to

allow the voltage to dissipate.

■ Safeguard the system against recon-

nection.

Safety instructions

5516 436 GB

!Please note

Electronic assemblies can be

damaged by electrostatic dis-

charge.

Before beginning work, touch

earthed objects, such as heating

or water pipes, to discharge static

loads.

Repair work

!Please note

Repairing components that fulfil a

safety function can compromise

the safe operation of your sys-

tem.

Defective components must be

replaced 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 spare

parts supplied or approved by

Viessmann.

Safety instructions

Safety instructions (cont.)

5516 436 GB

Installation instructions

Preparing for installation

Intended use......................................................................................................... 6

Requirements concerning on-site connections.................................................... 7

Siting requirements.............................................................................................. 8

Installation sequence

Installing the heat pump....................................................................................... 17

Making the hydraulic connections........................................................................ 18

Electrical connections, heat pump........................................................................ 21

Electrical connections, heat pump control unit..................................................... 26

Power supply........................................................................................................ 51

Closing the heat pump......................................................................................... 57

Service instructions

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance.......................................... 60

Further details regarding the individual steps....................................................... 61

Troubleshooting

Repairs................................................................................................................. 78

Parts lists

Overview of assemblies....................................................................................... 85

Casing.................................................................................................................. 86

Base frame........................................................................................................... 88

Heat pump module............................................................................................... 90

Additional components......................................................................................... 93

Air module............................................................................................................ 95

Miscellaneous....................................................................................................... 97

Electrical equipment............................................................................................. 98

Heat pump control unit......................................................................................... 100

Commissioning/service reports

Hydraulic parameter report................................................................................... 102

Control parameters report.................................................................................... 102

Specification....................................................................................................... 113

Appendix

Commissioning order........................................................................................... 115

Index

5516 436 GB

Certificates

Declaration of conformity...................................................................................... 116

Keyword index.................................................................................................... 117

Index

Index (cont.)

5516 436 GB

The appliance is only intended to be

installed and operated in sealed unven-

ted heating systems that comply with

EN 12828, with due attention paid to the

associated installation, service and

operating instructions.

Depending on the version, the appliance

can only be used for the following pur-

poses:

■ Central heating

■ Central cooling

■ DHW heating

The range of functions can be extended

with additional components and acces-

sories.

Intended use presupposes that a fixed

installation in conjunction with permissi-

ble, system-specific components has

been carried out.

Commercial or industrial usage for a pur-

pose other than central heating/cooling

or DHW heating shall be deemed inap-

propriate.

Any usage beyond this must be

approved by the manufacturer for the

individual case.

Incorrect usage or operation of the appli-

ance (e.g. the appliance being opened

by the system user) is prohibited and

results in an exclusion of liability. Incor-

rect usage also occurs if the components

in the heating system are modified from

their intended function.

Note

The appliance is intended exclusively for

domestic use, i.e. even users who have

not had any instruction are able to oper-

ate the appliance safely.

Preparing for installation

Intended use

5516 436 GB

1998

100

Ø 1100

B/C

300

370

490

211

945

ACable entries

BHeating water flow (connection

R 1¼)

CHeating water return (connection

R 1¼)

DCondensate drain hose (flexible)

Preparing for installation

Requirements concerning on-site connections

5516 436 GB

Installation

!Please note

Prevent damage to the appliance

during handling.

Never put weight on the top, front

or side panels of the appliance.

!Please note

Tilting the compressor at a steep

angle inside the heat pump can

result in appliance damage.

Max. tilting angle 45 °

Requirements of the heat pump installation site

The heat pump may only be sited out-

side the building on solid foundations

(see page 9).

■ Provide a manual drain for the heating

water flow and return lines in any area

at risk from frost.

Drain the system if the heat pump is

shut down or there is a prolonged

power failure.

■ If the heat pump control unit, secon-

dary pump and heating circuit pumps

are ready for operation, the frost pro-

tection function of the heat pump con-

trol unit is enabled.

In heat pump systems where a power

failure would not be detected, e.g. hol-

iday home: operate the heating circuit

with a suitable antifreeze or drain the

heating circuit.

■ To prevent an increase in noise level

due to reflection, avoid siting equip-

ment in recesses, at building corners

or between 2 walls.

■ Lawn areas and vegetation can

reduce noise development. Only the

heat pump foundations should there-

fore be made from reverberant mate-

rial (concrete).

■ Never install the heat pump next to liv-

ing rooms or bedrooms.

■ The air in the discharge area is approx.

10 K colder than the ambient air.

Therefore, black ice could develop in

the discharge area even at [ambient]

temperatures above freezing. Clear-

ance to paths or patios: ≥ 3 m

Requirements for the heat pump control unit installation location

The heat pump control unit may only be

installed inside the building on a wall

(see page 26).

!Please note

The installation room must be dry

and free from the risk of frost.

Ensure ambient temperatures

between 0 and 35 °C.

!Please note

Risk of explosion due to dust,

gases and vapours.

Avoid dust, gases and vapours in

the room.

Preparing for installation

Siting requirements

5516 436 GB

Minimum clearances

1500

Foundation

Site the heat pump level on a durable

and solid base. We recommend laying a

concrete foundation as described in the

following chapters. The thickness of

cover represents an average value and

should be matched to local conditions.

This must be done in accordance with

the standard rules of building engineer-

ing.

■No recess in the foundation for cables

and hydraulic lines required.

■ Design the foundations, mounting sur-

face and pipework in such a way as to

prevent small animals from entering

the heat pump and the cable ducts.

■ Drain all condensate derived from the

air via a DN 40 drain pipe, which must

be protected from frost and provide a

constant fall.

Amount of condensate: Subject to

temperature and relative humidity, up

to 20 l/h and up to 20 l in 5 min during

defrosting.

If possible connect the condensate

drain to a drainage or sewer system.

In this case, provide a siphon with a

backup level of at least 60 mm in the

frost-protected area.

Where the ground is able to absorb

water, the condensate can be soaked

away down to a frost-free depth into a

gravel bed.

■ Where appropriate, provide thermal

insulation or a ribbon heater around

the condensate drain pipe on site.

Technical guides for heat pumps

Preparing for installation

Siting requirements (cont.)

5516 436 GB

Installation

Weight including outer casing: 250 kg

Dimensions

198

291

411

514

B A

H H

860

700

CDE

Preparing for installation

Siting requirements (cont.)

5516 436 GB

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