Vaillant FlexoTHERM exclusive VWF 57/4 Bedienungsanleitung

en Operating instructions

flexoTHERM exclusive

VWF 57 - 197/4, VWF 57 - 117/4 230V

0020213396_05 - 16.01.2023

2Operating instructions 0020213396_05

Operating instructions

Contents

1 Safety ............................................ 3

1.1 Intended use .................................. 3

1.2 General safety information............. 3

2 Notes on the documentation ...... 6

2.1 Observing other applicable

documents ..................................... 6

2.2 Storing documents......................... 6

2.3 Validity of the instructions .............. 6

3 System overview.......................... 6

3.1 Heat pump system design ............. 6

3.2 Display of the energy

consumption, energy yields and

efficiencies ..................................... 7

4 Product description..................... 7

4.1 Product design............................... 7

4.2 Serial number ................................ 7

4.3 Opening the front flap .................... 7

4.4 CE marking .................................... 8

4.5 Safety devices ............................... 8

5 Operation...................................... 9

5.1 Control panel ................................. 9

5.2 Operating concept ....................... 10

5.3 Basic display................................ 10

5.4 Menu display................................ 11

5.5 Operating levels........................... 11

5.6 Starting up the product ................ 11

5.7 Switching on the product ............. 11

5.8 Adjusting the target cylinder

temperature ................................. 11

5.9 Yield indicator .............................. 11

5.10 Displaying the Live Monitor.......... 12

5.11 Displaying the building circuit

pressure....................................... 12

5.12 Displaying the environment

circuit pressure ............................ 12

5.13 Reading the operating

statistics ....................................... 12

5.14 Setting the language.................... 12

6 Troubleshooting ........................ 12

7 Care and maintenance .............. 13

7.1 Fulfilling requirements for the

installation site ............................. 13

7.2 Caring for the product .................. 13

7.3 Reading maintenance

messages .................................... 13

7.4 Checking the system pressure .... 13

7.5 Checking the brine circuit's

filling pressure.............................. 13

8 Decommissioning...................... 14

8.1 Temporarily decommissioning

the product................................... 14

8.2 Protecting the product against

frost.............................................. 14

8.3 Permanently decommissioning

the product................................... 14

9 Recycling and disposal............. 14

9.1 Arranging disposal of the brine

fluid .............................................. 14

9.2 Arranging disposal of

refrigerant .................................... 14

10 Guarantee and customer

service ........................................ 14

10.1 Guarantee.................................... 14

10.2 Customer service......................... 15

Appendix ............................................... 16

A Overview of the end user

level............................................. 16

0020213396_05 Operating instructions 3

1 Safety

1.1 Intended use

There is a risk of injury or death

to the user or others, or of dam-

age to the product and other

property in the event of im-

proper use or use for which it

is not intended.

The heat pump system is in-

tended exclusively for domestic

use.

The heat pump system is in-

tended as a heat generator

with cooling function for closed

heating installations and for do-

mestic hot water generation.

Operating the pump outside

the application limits results in

the heat pump being switched

off by the internal control and

safety devices.

Cooling mode with radiator

heating systems is not permit-

ted since radiators do not have

an adequate heat transfer sur-

face area.

Intended use includes the fol-

lowing:

–observance of the operating

instructions included for the

product and any other install-

ation components

–compliance with all inspection

and maintenance conditions

listed in the instructions.

This product can be used by

children aged from 8 years

and above and persons with

reduced physical, sensory or

mental capabilities or lack of

experience and knowledge if

they have been given supervi-

sion or instruction concerning

use of the product in a safe way

and understand the hazards in-

volved. Children must not play

with the product. Cleaning and

user maintenance work must

not be carried out by children

unless they are supervised.

Any other use that is not spe-

cified in these instructions, or

use beyond that specified in this

document, shall be considered

improper use. Any direct com-

mercial or industrial use is also

deemed to be improper.

Caution.

Improper use of any kind is

prohibited.

1.2 General safety

information

1.2.1 Danger caused by

improper operation

Improper operation may present

a danger to you and others, and

cause material damage.

▶Carefully read the enclosed

instructions and all other ap-

plicable documents, particu-

4Operating instructions 0020213396_05

larly the "Safety" section and

the warnings.

▶Only carry out the activities

for which instructions are

provided in these operating

instructions.

1.2.2 Risk of death due to

explosive and flammable

materials

▶Do not use the product in

storage rooms that contain

explosive or flammable sub-

stances (such as petrol, pa-

per or paint).

1.2.3 Risk of death due to

changes

to the product or the

product environment

▶Never remove, bridge or

block the safety devices.

▶Do not tamper with any of the

safety devices.

▶Do not damage or remove

any tamper-proof seals on

components. Only authorised

competent persons or cus-

tomer services may modify

sealed components.

▶Do not make any changes:

–The product itself

–The product environment

–The brine fluid, air and elec-

tricity supply lines

–The drain pipework and

expansion relief valve for

the heat source circuit

–to constructional condi-

tions that may affect the

operational reliability of the

product

1.2.4 Risk of chemical burns

caused by brine fluid

The brine fluid ethylene glycol is

harmful to health.

▶Avoid contact with the skin

and eyes.

▶Always wear gloves and pro-

tective goggles.

▶Do not inhale or swallow.

▶Observe the safety data sheet

that accompanies the brine

fluid.

1.2.5 Risk of injury

from freezing caused

by touching refrigerant

The product is delivered with

an operational filling of R410A

refrigerant. Escaping refrigerant

may cause freezing if the exit

point is touched.

▶If refrigerant escapes, do not

touch any components of the

product.

▶Do not inhale any vapours or

gases that escape from the

refrigerant circuit as a result

of leaks.

▶Avoid skin or eye contact with

the refrigerant.

▶In the event of skin or eye

contact with the refrigerant,

seek medical advice.

0020213396_05 Operating instructions 5

1.2.6 Risk of injury and

material damage due to

maintenance and repairs

carried out incorrectly or

not carried out at all

▶Never attempt to carry out

maintenance work or repairs

on your product yourself.

▶Faults and damage should be

immediately eliminated by a

competent person.

▶Adhere to the maintenance

intervals specified.

1.2.7 Risk of material damage

caused by frost

▶Ensure that the heating in-

stallation always remains in

operation during freezing con-

ditions and that all rooms are

sufficiently heated.

▶If you cannot ensure the oper-

ation, have a competent per-

son drain the heating installa-

tion.

1.2.8 Risk of environmental

damage caused by

refrigerant

The product contains a refriger-

ant that must not be allowed to

escape into the atmosphere.

▶Ensure that a competent per-

son who is qualified to work

with refrigerants services the

product and, after decommis-

sioning, recycles or disposes

of it.

1.2.9 Avoid environmental

damage caused by

escaping refrigerant

The product contains the refri-

gerant R410A. The refrigerant

must not be allowed to escape

into the atmosphere. R410A is

a fluorinated greenhouse gas

covered by the Kyoto Protocol,

with a GWP of 2088 (GWP =

Global Warming Potential). If

this gas escapes into the atmo-

sphere, its impact is 2088 times

greater than the natural green-

house gas CO2.

Before the product is disposed

of, the refrigerant that is con-

tained in it must be completely

drained into a suitable vessel so

that it can then be recycled or

disposed of in accordance with

regulations.

▶Ensure that only officially cer-

tified competent persons with

appropriate protective equip-

ment carry out maintenance

work on the refrigerant circuit

or access it.

▶Arrange for the refrigerant

contained in the product to

be recycled or disposed of by

certified competent persons in

accordance with regulations.

6Operating instructions 0020213396_05

2 Notes on the

documentation

2.1 Observing other applicable

documents

▶Always observe all operating instruc-

tions enclosed with the installation com-

ponents.

2.2 Storing documents

▶Store these instructions and all other

applicable documents for further use.

2.3 Validity of the instructions

These instructions apply only to:

Validity: Great Britain OR Ireland

Product

VWF 57/4

VWF 87/4

VWF 117/4

VWF 157/4

VWF 197/4

Validity: Great Britain OR Ireland

Product

VWF 57/4 230 V

VWF 87/4 230 V

VWF 117/4 230 V

3 System overview

3.1 Heat pump system design

3 1 2

5 1 2

The heat pump system consists of the

following components:

–Heat pump (1)

–System control (2) (from VRC 700)

–Outdoor temperature sensor with DCF

receiver

–System sensor, if required

–With ground heat source: Ground col-

lector (3)

–With air heat source (only products with

400 V): Air/brine collector(s) (4)

0020213396_05 Operating instructions 7

–With well water heat source: Ground

water module (5)

There is an opportunity for active cooling

to take place via circulation reversal for

the heat sources air, ground and ground

water.

Note

Approval from the water authorities

is required for operation with active

cooling using ground water as the

heat source.

3.2 Display of the energy

consumption, energy yields

and efficiencies

The product, the system control and the

app show approximate values for energy

consumption, energy yields and efficien-

cies, which are extrapolated based on cal-

culation algorithms.

The values that are displayed in the app

may differ from the other display options

due to staggered transfer intervals.

The determined values depend on:

–Installation and system of the heating

installation

–User behaviour

–Seasonal weather effects

–Various tolerances of unit-internal com-

ponents

The recording of the values only includes

the product in the factory-delivered condi-

tion. Supplementary accessories, even if

they are installed on the product, as well

as any other components in the heating

system and other external consumers, are

not part of the data recording.

Deviations between the determined values

and the actual values may be significant.

The determined values are therefore not

suitable for creating or comparing energy

billing, for example.

When replacing the PCB, the values for

energy consumption, energy yields and

efficiencies are reset in the heat pump's

control panel.

4 Product description

4.1 Product design

1 Front flap

2 Recessed

handle

3 Control elements

4 Plate showing

the serial num-

ber

The product contains fluorinated green-

house gases in a hermetically sealed

device.

4.2 Serial number

The serial number is located on a plate be-

hind the front flap. The 7th to 16th digits of

the serial number form the article number.

4.3 Opening the front flap

1. Take hold of the recessed handle in

the front flap on the left- or right-hand

side.

2. Pull the recessed handle.

8Operating instructions 0020213396_05

4.4 CE marking

The CE marking shows that the products

comply with the basic requirements of the

applicable directives as stated on the de-

claration of conformity.

The declaration of conformity can be

viewed at the manufacturer's site.

4.5 Safety devices

4.5.1 Frost protection function

The frost protection function for the system

is controlled via the system control. If the

system control fails, the heat pump guar-

antees limited frost protection for the heat-

ing circuit.

4.5.2 Protection against low heating

water pressure

This function continuously monitors the

pressure of the heating water in order to

prevent a possible loss of heating water.

4.5.3 Brine pressure detector

The brine pressure detector continuously

monitors the fluid pressure in the environ-

ment circuit in order to prevent a possible

shortage of fluid.

4.5.4 Freeze protection

This function prevents the evaporator from

freezing when the heat source temperat-

ure drops below a certain value.

The outlet temperature of the heat source

is constantly measured. If the outlet tem-

perature of the heat source falls below a

certain value, the compressor temporar-

ily switches off and displays a status mes-

sage. If this fault occurs three times in a

row, it is switched off and a fault message

is displayed.

4.5.5 Pump- and valve-blocking

protection system

This function prevents the pumps for heat-

ing water and brine and all diverter valves

from sticking. The pumps and the valves,

which were out of operation for 23 hours,

are switched on for 10 - 20 seconds, one

after the other.

4.5.6 High-pressure pressure switch

in the refrigerant circuit

The high-pressure pressure switch shuts

down the heat pump if the pressure in the

refrigerant circuit is too high. Following a

waiting period, the heat pump attempts

to start once more. After three failed start

attempts in succession, a fault message is

displayed.

–Max. refrigerant circuit pressure:

4.60 MPa (g) (46.00 bar (g))

–Waiting period: 5 minutes (after the first

occurrence)

–Waiting period: 30 minutes

(after the second and every further oc-

currence)

The fault counter is reset if both of the

following conditions are met:

–Heat requirement without switching off

prematurely

–60 minutes of uninterrupted operation

4.5.7 Hot gas thermostat in the

refrigerant circuit

The hot gas thermostat shuts down the

heat pump if the temperature in the re-

frigerant circuit is too high. Following a

waiting period, the heat pump attempts

to start once more. After three failed start

attempts in succession, a fault message is

displayed.

–Max. refrigerant circuit temperature:

135 ℃

–Waiting period: 5 minutes (after the first

occurrence)

–Waiting period: 30 minutes

0020213396_05 Operating instructions 9

(after the second and every further oc-

currence)

The fault counter is reset if both of the

following conditions are met:

–Heat requirement without switching off

prematurely

–60 minutes of uninterrupted operation

4.5.8 Safety cut-out (SCO) in the

heating circuit

If the temperature in the heating circuit

of the internal electric back-up heater

exceeds the maximum temperature, the

safety cut-out shuts down the electric

back-up heater as a securing measure.

Following a waiting period, another at-

tempt is made to start the electric back-up

heater. A fault message is displayed that

can only be reset by pressing the Reset

button or by switching the heat pump off

and on again.

–Max. heating circuit temperature: 85 ℃

5 Operation

5.1 Control panel

50 d

kWh

reset

1 Displays the

daily environ-

mental energy

yield

2 Display of the

current assign-

ment of the right-

hand selection

button

3 Left- and right-

hand selection

buttons

4 and but-

ton

5 Reset button

(restarts the heat

pump and sys-

tem control)

6 Access to the

menu for addi-

tional information

(press both se-

lection buttons at

the same time)

7 Display of the

current configur-

ation of the left-

hand selection

button

8 Displays the

symbols for the

current operating

mode of the heat

pump

9 Display

10 Operating instructions 0020213396_05

5.2 Operating concept

Control

element

Function

–Displaying the environmental

energy yield in heating mode,

domestic hot water mode and

cooling mode

–Cancelling a change to a set

value

–Going one selection level

higher

–Confirm the set value

–Going one selection level lower

at the

same

time

–Calling up the menu

or –Reducing or increasing the set

value

–Scrolling through menu entries

The current function of the and se-

lection buttons is shown on the display.

Adjustable values are always displayed as

flashing.

You must always confirm a change to a

value. Only then is the new setting saved.

You can press to cancel a procedure.

5.3 Basic display

50 d

kWh

Sym-

bol

Meaning Explanation

Compressor –Filled: Com-

pressor in op-

eration

–Not filled:

Compressor

not in

operation

Sym-

bol

Meaning Explanation

bar

Current filling

pressure of the

heating system

The dashed lines

show the permit-

ted range.

–Permanently

on: Filling

pressure in

the permitted

range.

–Flashing:

Filling pres-

sure outside

the permitted

range.

Pumps –Left continu-

ously on: Brine

pump in oper-

ation

–Right con-

tinuously on:

Heating pump

in operation

Auxiliary electric

heating

–Flashing: Aux-

iliary electric

heating in op-

eration

–+ : Aux-

iliary electric

heating act-

ive for heating

mode

–+ : Aux-

iliary electric

heating active

for hot water

handling mode

Green iQ mode –Product

equipped with

energy-saving

technology

Heating mode –Continuously

on: Heating

mode active

Cooling mode –Continuously

on: Cooling

mode active

(active or

passive)

Hot water gener-

ation

–Continuously

on: Hot water

handling mode

active

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