STIEBEL ELTRON FEK Manual de usuario

26_03_01_0106

270783

26_03_01_0106

FEK

Control module

Operating and installation instructions

Index

1. Operating instructions 2

for users and contractors

1.1 Equipment description 2

1.2 Equipment overview 2

1.3 Important information 2

1.4 Operation 3

1.5 Settings 3

2. Installation instructions 12

for contractors

2.1 Standard delivery 12

2.2 General 12

2.3 Installation 12

2.4 Specification 13

2.5 Commissioning 13

1 Operating instructions for users and contractors

1.2 Equipment overview

1.2.1 With closed control ﬂap and standard

display

1.1 Equipment description

The FEK control module only works in

conjunction with the weather-compensated

WPMi control unit. It enables the convenient

entry and display of system parameters, e.g.

outside temperature, relative humidity and

heating circuit parameters (e.g. heating times

and required room temperature) for the

heating system from the user’s living room.

This allows the constant monitoring and

optimising of the heating system, both in

heating and in cooling mode.

In addition, hooking up a room temperature

enables the correction of the weather-

compensated WPMi control unit.

1.3 Important information

The control module must only be

installed and maintained by qualiﬁed

contractors.

1.4 Operation

The operation is split over three control levels.

Control levels 1 and 2 are accessible to users

and contractors alike. Control level 3 is only

designed for qualified contractors:

Control level 1 (control flap closed)

This enables the adjustment of operating

modes, such as standby mode, programmed

operation, constant day or setback mode (for

this, see section 1.5.1).

Control level 2 (control flap open)

This enables parameters, such as room

temperature, heating programs, etc. to be

adjusted (for this, see section 1.5.5).

Time

Room temperature

Day

Heating times

Relative humidity

1 Away key

2 Operating mode key

3 Help key

4 Rotary selector for changing the set

room temperature ± 5 K

1 2 3 4

1.2.2 With the control ﬂap open and with all

indicator elements on display

123 4 5

1 Programming indicator

2 + key

3 PRG key

4 - key

5 Reset

C26_21_01_0010

C26_21_01_0011

Vital facts in brief

Settings

All adjustments follow the same pattern:

Opening the control flap toggles the FEK

to control level 2. The display shows the

parameter “room temp.”.

Pressing enables you to adjust the

parameter you want to change.

Press to change the value of the

parameter. You can change the currently

displayed value with or , when the red

indicator is illuminated. Press again, the

indicator then extinguishes and the new

set value has been saved. You can modify

further values for this parameter by pressing

or , if the red indicator has not been

extinguished after saving.

The programming step can only be

terminated when the red indicator has

extinguished.

Terminating programming

You can terminate the programming process

after entering and saving the required

parameter changes by closing the control

flap. However, if you want to make further

changes, press one of the keys until the

display shows BACK, then press . This

will return you to the previous level. Closing

the control flap with illuminated indicator

returns the FEK into its original position. The

modified value will then not be saved.

1.5 Adjustments (control level 1)

With the flap closed, the display shows the

operating mode, time and day, as well as

the current room temperature and relative

humidity.

1.5.1 Operating mode key

When connecting a FEK, only the operating

modes for the pre-selected heating circuit are

adopted by the WPMi.

You can select the required operating mode

by pressing this key several times with the

flap closed. The selected operating mode is

indicated by a symbol in the display. It becomes

effective if the setting was not changed for five

seconds.

Standby mode

Frost protection for the heating operation

is active. The standby symbol flashes, when

the heat pump manager is in standby

mode, and the operating mode cannot be

adjusted.

Application: During holidays.

Automatic mode

Heating according to time switch program.

Changeover between day temperature

and setback temperature. With this

operating mode, an additional symbol (sun

or moon) indicates in the display, whether

the heating circuit is currently in day or in

setback mode.

Constant day mode

The heating circuit is held at constant day

temperature.

Application: In low energy houses without

setback mode.

Constant setback mode

The heating circuit is held at constant

setback temperature.

Application: During weekends away.

Control level 3 (for contractors only)

This level is protected by a code and should

only be used by contractors. At this level,

heat pump and system-specific details are

determined (for this, see section 2.5).

1.5.2 Away key

This key activates the eco mode (away).

Press twice: The heating circuit switches to

setback mode for one hour. The selected

heating interruption is briefly displayed in

hours.

Press this key several times: the heating circuit

switches for the respective number of hours

to setback mode. If no key is then pressed for

approx. three seconds, the display returns to

the standard display and the active heating

interruption is displayed by the flashing moon

symbol.

You can scan the selected heating interruption

by pressing the “Away” key once at any time.

Pressing the operating mode key deactivates

the “Away” period and the moon symbol will

extinguish.

1.5.3 Help key

Pressing this key allows you to scan sensor

temperatures of the heat pump or heat

pump system, such as outside temperature,

actual DHW temperature, actual return

temperature, actual room temperature and

the relative humidity.

Display (including all elements)

1 Heating times for central

heating and DHW (black)

2 12-digit plain text display

3 Mixer mode

4 Heating mode

5 DHW mode

6 Cooling mode

7 Compressor runs

8 Booster in operation

Stage 1, 2 or 3

9 Fault message (flashing)

10 ‘BUS connection to the

WPMi established

11 WPMI in away mode

12 Standby mode

13 Automatic mode

14 Constant day mode

15 Constant setback mode

16 Day

After you press this key, the first display is

the outside temperature. Continuing to

press displays, in sequence, the actual DHW

temperature, the actual return temperature,

the maximum and minimum room

temperatures and the maximum and minimum

relative humidity. The standard display returns

after five seconds.

The MIN/MAX values for room temperature

and relative humidity are constantly updated

and stored.

If you hold down the key for four seconds, the

top of the display shows DELETE VALUES. All

MIN/MAX values will then be deleted.

Any fault in the heat pump causes an arrow

above the help key and the attention symbol

to ﬂash. Pressing the help key displays that

fault. Three seconds later, the fault display

extinguishes and the standard display returns

again.

1.5.4 Room temperature

You can adjust the room temperature by

+/- 5K with the rotary selector. This set value

adjustment applies to the then current heating

time, not to the setback time.

1 2 3 4567 8

12 13 14

15 16

10 11

C26_21_01_0012

With the Room temp. parameter you can adjust the set

room temperature of the heating circuit for the day and

setback mode.

In the Heating curve parameter, you can adjust the

heating curve. The room temperature will only remain

constant, irrespective of the outside temperature, if the

correct heating curve has been selected for the relevant

type of building. Selecting the correct heating curve is

therefore vitally important.

In the Heating program parameter, you can adjust the

heating program.

The Temperatures parameter enables you to scan the

sensor temperatures of the heat pump or heat pump

system, comparing the actual with the set temperatures,

the relative humidity, etc..

During commissioning, you need to not only determine

the settings of control level 2, but also the system-specific

parameters. These parameters are adjusted at control

level 3 by your heating contractor, access to which is

protected by code.

1.5.5 Overview of system parameter (control level 2)

Select the required parameter with the rotary selector.

For adjustments to parameters, turn to page 6.

ROOM T

HTG PROG

TEMPERATURES

HTG CURVE

CONTRACTOR

Temperatures

The Temperatures parameter enables you to

scan the following sensor temperatures of the

heat pump or heat pump system, comparing

the actual with the set temperatures, the

relative humidity, etc..

– Outside temperature

– Actual room temperature

– Set room temperature

– Relative humidity

– Actual DHW temperature

– Set DHW temperature

– Actual heat pump return temperature

– System frost protection temperature

Note

No display, if the corresponding temperature

sensor is not connected.

Room temperature

With the Room temp. parameters you can

adjust the set room temperature for the day

and setback mode. Changing these parameters

results in a parallel offset of the heating curve.

The heating curve, room temperature

and heating program parameters are

not shown at the WPMi heat pump manager,

if the FEK is pre-selected for a speciﬁc

heating circuit.

Adjustments at control level 2 for users and contractors

Open the control ﬂap

ROOM T

SET DAY

SET HIGHT

ROOM T

BACK

Open the control ﬂap

Heating program

Under this parameter you have the option of

setting up a heating program, i.e:

– for every day of the week (Mo, ..., Su)

–

Monday to Friday (Mo - Fr)

– Saturday and Sunday (Sa - Su)

– the whole week (Mo - Su)

You can adjust three switching time pairs (I, II,

III) for each of these options.This determines

when and how often the heat pump system

should heat in day mode.

Open the control ﬂap

At all other times, the heat pump operates

in setback mode. You will already have

selected the corresponding set values for day

and setback mode under the Room temp.

parameter.

Example:

Your heating system should operate daily

from Monday to Friday at two different times,

i.e. from 05:30 h until 08:30 h and from 14:00

h until 22:00 h. For the weekend, your heating

system should provide heat from 08:30 h until

21:00 h.

OUTDOOR TEMP

BACK

TEMPERATURES

HTG PROG

MON-FRI

OFF

Heating curve

The Heating curve parameter allows you to

select a heating curve for heating circuit 1 or

2. Selecting the correct heating curve is vitally

important.

Note: Your contractor will have set up a

building and system-specific optimum heating

curve for the heating circuit. It relates to the

heat pump return temperature for heating

circuit 1 and to the mixer flow temperature for

heating circuit 2.

When adjusting the heating curve, the

calculated set return or flow temperature,

which is subject to the outside temperature

and the set room temperature, will be shown

at the top of the display.

26_21_01_0013

Relative to +20 °C

Outside temperature

Relative to 0 °C

Outside temperature

Relative to -20 °C

Outside temperature

Relative to +20 °C

Outside temperature

Relative to 0 °C

Outside temperature

Relative to -20 °C

Outside temperature

BACK

OFF

SAT - SUN

Open the control ﬂap

26_03_01_0077

1,5

1,2

0,6

0,4

0,2

2,5

-2

-4

-6

-8

-10

-12

-14

-16

-18

-20

100

Außentemperatur [°C]

Heizkreis 2 WP-Vorlauftemperatur [°C]

Heizkreis 1 WP-Rücklauftemperatur [°C]

0,8

Heating curve diagram

One heating curve respectively can be adjusted for heating circuit 1 and heating circuit 2.

At the factory, heating curve 0.6 is set up for heating circuit 1 and heating curve 0.2 for

heating circuit 2. These heating curves relate to a set room temperature of 20 °C.

Heating circuit 1, HP return temperature [°C]

Heating circuit 2, HP flow temperature [°C]

Outside temperature [°C]

HTG CURVE

BACK

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