STIEBEL ELTRON LWZ 304 SOL Bedienungsanleitung

OPERATION

Central ventilation appliance with heat recovery

» LWZ 304 SOL

» LWZ 404 SOL

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CONTENTS | SPECIAL INFORMATION

SPECIAL INFORMATION

OPERATION

1. General information _________________________________________3

1.1 Safety instructions�� 3

1.2 Other symbols in this documentation �� 3

1.3 Units of measurement �� 3

2. Safety__________________________________________________________3

2.1 Intended use�� 3

2.2 General safety instructions �� 3

2.3 Test symbols �� 4

3. Appliance description _______________________________________4

4. Operation _____________________________________________________4

4.1 Controls�� 4

4.2 Operating modes �� 6

4.3 Favourites, quick access, function block �� 7

4.4 Entering parameters �� 8

4.5 Main menu�� 9

 ACTUAL VALUES�� 9

 DIAGNOSIS �� 9

 SYSTEM STATUS�� 9

 FAULT LIST�� 9

 PROGRAMS �� 9

 HEATING PROGRAM �� 9

 DHW PROGRAM �� 10

 FAN PROGRAM �� 10

 HOLIDAY PROGRAM �� 10

 PARTY PROGRAM �� 10

 SETTINGS�� 10

 HEATING �� 10

 DHW �� 12

 VENTILATION �� 13

 COOLING �� 13

 SOLAR�� 14

 DRY HEATING PROGRAM�� 15

 COMMISSIONING �� 15

 TIME / DATE �� 15

 CONTRACTOR �� 15

5. Cleaning, care and maintenance _________________________ 16

5.1 Replacing supply air and extract air ﬁlters�� 16

6. Troubleshooting ____________________________________________ 17

6.1 Filter symbols appear�� 17

6.2 No hot water�� 17

6.3 The safety valve of the cold water supply line is

dripping �� 17

6.4 The fault symbol appears �� 17

6.5 The appliance leaks water �� 17

6.6 Condensate on the outside of the appliance or on the

air hoses�� 17

6.7 Noise is emitted�� 18

6.8 The required ﬂow temperatures are not reached,

particularly during drying out �� 18

6.9 The accommodation is always too cold �� 18

6.10 The accommodation is always too hot �� 18

6.11 The accommodation is too cold in winter�� 18

SPECIAL INFORMATION

- The appliance may be used by children aged8

and older and persons with reduced physical,

sensory or mental capabilities or a lack of ex-

perience and know-how, provided that they are

supervised or they have been instructed on how

to use the appliance safely and have understood

the potential risks. Children must never play with

the appliance. Children must never clean the ap-

pliance or perform user maintenance unless they

are supervised.

- The power cable must only be replaced (for ex-

ample if damaged) by qualiﬁed contractors au-

thorised by the manufacturer.

- The appliance is pressurised. During the heat-up

process, expansion water will drip from the safety

valve.

- Regularly activate the safety valve to prevent

it from becoming blocked, e.g. by limescale

deposits.

6.12 The accommodation is too hot in winter�� 18

6.13 The accommodation is too cold in spring and autumn � 18

6.14 The accommodation is too hot in spring and autumn �� 18

6.15 The accommodation is too hot in summer �� 18

6.16 Air quality is too poor�� 18

6.17 The air in winter is too dry �� 18

7. Menu structure _____________________________________________ 19

GUARANTEE

ENVIRONMENT AND RECYCLING

OPERATION

General information

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OPERATION

1. General information

This manual is intended for the appliance user and qualiﬁed con-

tractors.

Note

Read these instructions carefully before using the appli-

ance and retain them for future reference.

Pass on the instructions to a new user if required.

1.1 Safety instructions

1.1.1 Structure of safety instructions

KEYWORD Type of risk

Here, possible consequences are listed that may result

from failure to observe the safety instructions.

 Steps to prevent the risk are listed.

1.1.2 Symbols, type of risk

Symbol Type of risk

Injury

Electrocution

Burns

(burns, scalding)

1.1.3 Keywords

KEYWORD Meaning

DANGER Failure to observe this information will result in serious

injury or death.

WARNING Failure to observe this information may result in serious

injury or death.

CAUTION Failure to observe this information may result in non-seri-

ous or minor injury.

1.2 Other symbols in this documentation

Note

Notes are bordered by horizontal lines above and below

the text. General information is identiﬁed by the adjacent

symbol.

 Read these texts carefully.

Symbol Meaning

Material losses

(appliance damage, consequential losses and environmen-

tal pollution)

Appliance disposal

 This symbol indicates that you have to do something. The ac-

tion you need to take is described step by step.

These symbols show you the software menu level (in

this example: level3).

1.3 Units of measurement

Note

All measurements are given in mm unless stated oth-

erwise.

2. Safety

2.1 Intended use

The appliance is a complete system with heat recovery for cen-

tralised ventilation and extraction, as well as for centralised DHW

heating and central heating.

The appliance is intended for domestic use. It can be used safely

by untrained persons. The appliance can also be used in a non-do-

mestic environment, e.g. in a small business, as long as it is used

in the same way.

Any other use beyond that described shall be deemed inappro-

priate. Observation of these instructions is also part of the correct

use of this appliance.

2.2 General safety instructions

The appliance should only be operated once it is fully installed

and all safety equipment has been ﬁtted.

Check the supply air and extract air ﬁlters regularly for contam-

ination.

Never adjust the setting of supply and extract air valves inside the

rooms. These have been adjusted during commissioning.

Never make any modiﬁcations to the internal equipment electrics

or controls.

WARNING Electrocution

Never splash the appliance with water or other liquids.

WARNING Burns

There is a risk of scalding at outlet temperatures in ex-

cess of 43 °C.

WARNING Injury

The discharged cold air can cause condensation to be

formed in the vicinity of the air discharge.

 Ensure that no risk of slipping due to wet conditions

or ice formation occurs on adjacent footpaths and

driveways at low temperatures.

OPERATION

Appliance description

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WARNING Injury

The appliance may be used by children over 8 years of

age and persons with reduced physical, sensory or men-

tal capabilities or a lack of experience and expertise,

provided that they are supervised or they have been

instructed on how to use the appliance safely and have

understood the potential risks. Children must never play

with the appliance. Children must never clean the ap-

pliance or perform user maintenance unless they are

supervised.

Note

The appliance is pressurised. During the heat-up process,

expansion water will drip from the safety valve.

 If water continues to drip when heating is complet-

ed, please inform your qualiﬁed contractor.

WARNING Injury

If there is a radio or police announcement ordering win-

dows and doors to be kept closed, simply select fan stage

“0” (= fan off) for several hours.

The programming unit must be activated if the appliance

has been out of operation for a long time:

 Hold down “MENU” button for three seconds.

 If you have already navigated through the menu

tree, pressing MENU will return you to the default

display. If necessary you may have to press menu

several times.

 Slide your ﬁnger along the scroll wheel until you

reach the “VENTILATION STAGES” entry.

 Press “OK”.

 Press “OK” again to adjust the “UNSCHEDULED

VENT.” parameter.

 Set the “UNSCHEDULED VENT.” parameter to 0 by

sliding your ﬁnger anti-clockwise over the scroll

wheel.

 Conﬁrm with “OK”.

 Set the “UNSCHED. VENT TIME STAGE 0” parameter

to a suitable value.

Note

Do not change any system-speciﬁc settings at the control

unit. Your qualiﬁed contractor has set the control unit

to match the local conditions for your building and your

individual requirements. The system-speciﬁc parameters

are protected by a code to prevent unintentional mod-

iﬁcations.

The parameters that serve to adapt the appliance to your

personal requirements are not protected by a code.

2.3 Test symbols

See type plate on the appliance.

3. Appliance description

Heat is recovered from the extract air by means of a highly efﬁcient

cross-countercurrent heat exchanger and an air/water heat pump.

In addition, heat is extracted from the outdoor air. This energy,

efﬁciently made available by the heat pump, is channelled to the

central heating or DHW system. The cooled air is discharged out-

doors as exhaust air.

When the temperature is very low, or when there is a very high

heat demand, the appliance covers the residual heat demand by

means of an integral electric emergency/booster heater. With a

mono mode design, the electric emergency/booster heater is acti-

vated for emergency heating if the temperature reading falls below

the standard outside temperature, set as the dual mode point.

This ensures heating operation and the provision of high DHW

temperatures. In mono energetic mode, the electric emergency/

booster heater is activated as a booster heater.

The appliance is controlled by a weather-compensated control

unit.

Cooling function

This appliance is suitable for cooling. This is achieved by extracting

heat from the heating system through a reversal of the heat pump

circuit. The heat extracted from the heating water is transferred

by the evaporator to the outdoor air.

The cooling function requires an external programming unit.

The “COOLING” menu will be shown if an external “FES Comfort”

programming unit is connected to the CAN BUS (the control unit

can supply up to two programming units) and recognised by the

control unit.

Heat metering

The appliance is equipped with an integral heat meter. In the “AC-

TUAL VALUES” menu, the supplied amounts of heat are displayed.

Solar backup

A solar thermal system can be connected via a solar heat exchang-

er. Solar backup can be provided both in central heating mode

and DHW mode. A differential temperature controller for the solar

thermal system is integrated in the appliance control unit.

A heat exchanger built into the outdoor air ﬂow heats the outdoor

air for domestic ventilation. If sufﬁcient solar heat is available, the

outside air is preheated indirectly by solar energy.

4. Operation

4.1 Controls

OKMENU

WEDNESDAY 10 SEPT 14 10:23 TIME

OUTSIDE TEMPERATURE

DHW TEMPERATURE

27.0 °C

35.0 °C

28.0 °C

FLOW TEMPERATURE

DAY M ODE

D0000064711

The programming unit enables you to change parameters and

to obtain information on the appliance operation. The appliance

can also be controlled when no programming unit is connected

or the connected one is faulty. The programming unit comprises

OPERATION

Operation

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the scroll wheel, two keys and above these a display. The display

shows the current appliance status and provides messages as well

as information. The programming unit functions are accessed via

a menu tree. With the scroll wheel, you can navigate the menu

structure and change values.

4.1.1 Display

26�04�01�0292

WEDNESDAY 10 SEPT 14 10:23 TIME

OUTSIDE TEMPERATURE

DHW TEMPERATURE

27.0 °C

35.0 °C

28.0 °C

FLOW TEMPERATURE

DAY MODE

1 Date and time

2 Favourites

3 Operating mode

4 Appliance status symbols

The start screen is divided into four sections by horizontal lines.

The time and date are at the top. In the ﬁeld below this, your

favourites are displayed. Here, you can check up to three appli-

ance parameters at any time (see chapter “Favourites”). When

you are in the menu, the favourites display is no longer shown.

The third section provides information about the current operat-

ing mode and serves to control further functions, such as quick

access, function block. In the fourth section, at the bottom edge

of the display, pictorial symbols provide information about the

current system status.

You can adjust the contrast of the display and select the language

of the display texts in the “COMMISSIONING” menu.

4.1.2 Picture symbols in the display

At the lower edge of the display, symbols provide information

about the current appliance operating status. Up to eight symbols

can be displayed at once.

Filter change, top:

The extract air ﬁlter is contaminated. Please change the

extract air ﬁlter.

Filter change, bottom:

The supply air ﬁlter is contaminated. Please change the

supply air ﬁlter.

Filter change, top and bottom:

The ﬁlter change service intervals of the extract air and

the supply air ﬁlters have expired or the ﬁlters have be-

come contaminated prematurely. Please change the ex-

tract air and supply air ﬁlters.

Electric emergency/booster heater:

The electric emergency/booster heater has started up.

This occurs, for example, when the outside temperature

has fallen below the dual mode point.

Cooling:

The cooling symbol is displayed when the appliance is

in heating mode.

Heating:

The heating symbol is displayed when the appliance is

in heating mode.

DHW heating:

This symbol tells you that the appliance is heating DHW.

Compressor:

The compressor symbol signals that the compressor is

running.

Evaporator defrost:

The evaporator is defrosting.

Switching program enabled:

If a switching program is enabled, this symbol is dis-

played.

Service:

A service is required. Please contact your qualiﬁed con-

tractor.

Ventilation stage:

For a limited period the appliance operates with a mod-

iﬁed ventilation stage.

Heating circuit pump:

The pump symbol is displayed when a heating circuit

pump is running.

Heat-up:

This symbol shows when the drying heating program

runs.

Power-OFF:

This symbol lights up if the appliance has no enable signal

from the power supply utility.

4.1.3 Scroll wheel

D0000064710

The scroll wheel consists of a touch-sensitive sensor. There is a

key to the left and another to the right of it. With the wheel and

the keys, you can control and check all the necessary appliance

functions.

OPERATION

Operation

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Note

If you have gloves on, have wet hands or the program-

ming unit is damp, this impedes the recognition of your

touch and the execution of the action you require.

In the “COMMISSIONING” menu, your qualiﬁed contractor can set

the touch sensitivity using the “TOUCH SENSITIVITY” parameter.

Activation

The user interface is blocked to protect the appliance from acci-

dental incorrect adjustments.

WEDNESDAY 10 SEPT 14 10:23 TIME

OUTSIDE TEMPERATURE

DHW TEMPERATURE

14.0 °C

35.0 °C

18.0 °CFLOW TEMPERATURE.

DAY MODE

TO ACTIVATE PLEASE

PRESS MENU FOR 3 S.

26�04�01�0292

 Touch the menu button for 3 seconds to enable the user

interface.

If the scroll wheel and keys are not used for 20minutes, the pro-

gramming unit is locked again. With the function block, you can

block the user interface for 60 seconds.

Once the programming unit is activated, you have two adjustment

options:

- You can select operating modes with the scroll wheel.

- You can press “MENU” to continue navigating from there to a

speciﬁc appliance parameter.

Selection indicator

As you move through the menu and parameter levels, the selection

indicator shows your current position. Either a dark background

appears or the current list entry is highlighted by two lines, one

above and one below.

Circular movement

If you brush a ﬁnger clockwise along the recessed scroll wheel,

the highlighting ﬁeld moves through the list of parameters either

to the right, or downwards if the parameters are arranged ver-

tically. With an anti-clockwise rotation, the highlighter moves to

the left or upwards.

Alongside navigation within the menu structure, the scroll wheel is

also used to set parameters. If you make a clockwise rotation, the

value is raised. With a circular movement anti-clockwise, values

are reduced.

Faster circular motions increase the step magnitude when chang-

ing parameters. Your qualiﬁed contractor can determine at what

speed of rotation the step magnitude changes, in the “COMMIS-

SIONING” menu using the “TOUCH ACCELERATION” parameter.

4.1.4 Menu key

The menu key has two functions. If you are on the default screen,

press “MENU” to enter the second level of the menu structure.

There, you have access to the appliance setting options, such as

the input of switching time programs.

If you are not in the highest menu level, tap the menu key to go

back one level.

Note

In the following sections of this document, the abbrevi-

ation “MENU” means you should touch the MENU key.

Note

Tap the keys only brieﬂy to initiate the required action.

If you touch the menu and OK keys for too long, the pro-

gramming unit will not respond.

4.1.5 OK button

With one touch of the OK key, you conﬁrm the selection of the

menu entry highlighted. This brings you into the menu tree on the

next menu level. If you are already at the parameter level, “OK”

saves the currently set parameter.

Example 1

In the third area on the start screen, the currently enabled oper-

ating mode is displayed, for example manual mode. If you want

to change to automatic mode, make a rotation until you reach

the required mode. Then conﬁrm your selection with the OK key.

Only now does the appliance change to the new operating mode.

Example 2

The OK key is used to conﬁrm parameter entries. The newly set

value is not saved until you press “OK”.

Note

In the following sections of this document, the abbrevia-

tion “OK” means you should touch the OK key.

4.1.6 Acoustic signals

A click sound accompanies every user action. Example: A click

is heard every time “OK” and “MENU” are tapped. Furthermore,

the clicking accompanies every step along a menu list activated

by a rotation.

4.2 Operating modes

When the start screen is activated, the current operating mode

is displayed. If you want to select another operating mode, scroll

with the scroll wheel. This takes you through the list of possible

operating modes. The current choice (list entry) is shown in the

shaded selection ﬁeld. To change the appliance to this new oper-

ating mode, conﬁrm with”OK”.

OPERATION

Operation

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WEDNESDAY 10 SEPT 14 10:23 TIME

OUTSIDE TEMPERATURE

DHW TEMPERATURE

14.0 °C

35.0 °C

18.0 °CROOM TEMPERATURE

DAY MODE

26�04�01�0292

The appliance can operate in the following modes: Standby mode,

automatic mode, day mode, setback mode, DHW mode, manual

mode and emergency mode. In addition, you will ﬁnd ﬁve further

setting options in this selection list: the favourites, the quick access

to ventilation stages, hotter/colder, direct line, and right at the end

of the list, the function block.

Since navigation to a new operating mode is always made from the

currently enabled mode, you may need to scroll in an anti-clock-

wise direction. All operating modes, apart from DHW mode, apply

to central heating, ventilation and DHW.

4.2.1 STANDBY

In standby mode, the appliance delivers the set standby values.

Generally, you will switch the appliance into minimum operation

with standby mode. The appliance runs in standby mode until

another operating mode is enabled.

4.2.2 AUTOMATIC

In automatic mode, the time programs set for central heating,

DHW and ventilation are implemented. Automatic mode is the

standard appliance setting. The heating ﬂow temperature is reg-

ulated according to a weather-compensated heating curve. The

appliance runs in setback mode if no time programs are enabled.

4.2.3 DAY MODE

In day mode (generally while occupants are present in the house,

during the day), the heating system operates with the selected set

day values. Day mode does not inﬂuence DHW heating or venti-

lation.

4.2.4 SETBACK MODE

The appliance activity is reduced in setback mode, for example

at night time, or during the day when nobody is at home. In set-

back mode, the heating system is operated with the selected set

night values. Setback mode does not inﬂuence DHW heating or

ventilation.

4.2.5 DHW MODE

DHW mode is enabled in accordance with the set time programs.

For the current pair of switching times, the DHW set day value

is delivered. The central heating is switched off except for frost

protection. DHW operation does not inﬂuence ventilation.

4.2.6 MANUAL MODE

If manual mode is enabled, the set values selected for manual

mode are delivered. In manual mode, the heating ﬂow tempera-

ture is not inﬂuenced by the outside temperature.

4.2.7 EMERGENCY MODE

If emergency mode is enabled, the “Compressor” heating stage is

skipped. Heating is provided by the solar thermal system (if con-

nected) or the electric emergency/booster heater. The dual mode

point is not taken into consideration. Using the electric emergency/

booster heater on its own for long periods means high energy

costs.

If you activate emergency mode, the set room temperatures from

automatic mode are used. The switching programs from automatic

mode are also used.

4.3 Favourites, quick access, function block

As well as the operating modes, on the start screen you can also

select which parameters are always shown in the favourites list.

Additionally, you can inﬂuence the fan stage and temperature

via a quick link, jump straight to a parameter and enable the

function block.

4.3.1 Favourites

You reach “FAVOURITES” if you run through the list of operating

modes on the default screen with the scroll wheel. Up to three

parameters are constantly shown on the display when the ap-

pliance is in operation. To select your favourites, navigate to the

required parameter. If the square at the end of the line is not ﬁlled

in, this parameter is not yet one of your favourites. Press “OK” to

change this. However, you can only select three favourites. You

may therefore have to disable one of your current favourites. Press

“OK” to disable.

4.3.2 Ventilation stages

WARNING Injury

If there is a radio or police announcement ordering win-

dows and doors to be kept closed, simply select fan stage

“0” (= fan off) for several hours.

The programming unit must be activated if the appliance

has been out of operation for a long time:

 Hold down “MENU” button for three seconds.

 If you have already navigated through the menu

tree, pressing MENU will return you to the default

display. If necessary you may have to press menu

several times.

 Slide your ﬁnger along the scroll wheel until you

reach the “VENTILATION STAGES” entry.

 Press “OK”.

 Press “OK” again to adjust the “UNSCHEDULED

VENT.” parameter.

 Set the “UNSCHEDULED VENT.” parameter to 0 by

sliding your ﬁnger anti-clockwise over the scroll

wheel.

 Conﬁrm with “OK”.

 Set the “UNSCHED. VENT TIME STAGE 0” parameter

to a suitable value.

With quick access option “VENTILATION STAGES”, you reach the

setting area for the fan stage (see diagram below). Under “UN-

SCHEDULED VENT.” enter the required value (0 to3). This setting

is valid for a limited time, which you set in the neighbouring menu

item, e.g. “UNSCHED. VENT TIMESTAGE 0”. If you do not set a time,

the appliance adopts the saved parameter values.

OPERATION

Operation

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26�04�01�0367

UNSCHED. VENT TIME STAGE 2

UNSCHEDULED VENT.

VENTILATION STAGES

4.3.3 HOTTER / COLDER

Here, you can change the set room temperatures for the heating

circuits and thereby raise or lower the heating curves.

4.3.4 DIRECT LINE

If you know the number of the required parameter (for example

P37), you can move straight there with the direct line.

 On the default screen, turn the scroll wheel until keyword

“DIRECT LINE” appears. Conﬁrm with “OK”. Select the num-

ber of the required parameter. Conﬁrm with “OK”.

You can select parameters 01 to 89. To make the direct line easier

to use, the parameter designations are displayed along with their

numbers.

4.3.5 FUNCTION BLOCK

If you select the “FUNCTION BLOCK” function, the programming

unit will be blocked for 60 seconds. During this time, you can

clean the programming unit without accidentally changing the

appliance settings. A counter appears on the screen that shows

the remaining blocking time in seconds.

4.4 Entering parameters

If you are on a menu level where you have the choice between

different parameters, the value of the parameter is shown as a

preview in addition to the current list position.

Parameters are changed by scrolling with the scroll wheel. To

save the new value, touch “OK”. If you want to cancel the entry,

press “MENU”. The parameter retains the previously saved value.

Note

If more than ﬁve minutes pass without any user activity,

rotation or tapping of “MENU” or “OK”, the program-

ming unit display automatically jumps back to the de-

fault screen. Recent parameter changes not yet been

conﬁrmed with “OK” will be lost. The parameters retain

the values previously saved.

Example 1

To enter set temperatures, a number surrounded by a circle ap-

pears on the display. This indicates that you can change the value

by turning the scroll wheel.

21.7

MAIN MENU

HEATING

ROOM TEMPERATURE DAY

°C

26�04�01�0347

ROOM TEMPERATURES HC1 HC

ROOM TEMPERATURE DAY

Example 2

To set holiday dates, a calendar page for the selected month ap-

pears.

DAY MONTH YEAR HOUR MINUTE

26�04�01�0300

Settings

HOLIDAY PROGRAM-PARTYHOLIDAY PROGRAM

HOLS BEGINNING

MON TUE WED THU FRI SAT SUN

02 03 04 05 06 07 08

09 10 11 12 13 14 15

16 17 18 19 20 21 22

23 24 25 26 27 28 29

Turning the scroll wheel displays the highlighter that you can then

move to the required date.

Example 3

Some parameters are selected via highlighted boxes. The positions

where the box is highlighted, i.e. coloured in black, are active. One

example is setting up favourites. With “OK” you can highlight the

box, or remove it if the item was already highlighted. For favour-

ites, up to three highlighted list entries can be selected in this way.

ROOM TEMPERATURE HC1

SET ROOM TEMPERATURE HC1

ROOM TEMPERATURE HC2

SET ROOM TEMPERATURE HC2

34.2 °C

26�04�01�0298

MAIN MENU

ACTUAL VALUES

ROOM TEMPERATURE

OPERATION

Operation

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4.4.1 Contractor access

To prevent incorrect adjustments, some appliance parameters may

only be changed by qualiﬁed contractors. These parameters are

protected and can only be changed after entering a code.

0* **

26�04�01�0293

ENTER CODE

MAIN MENU

VENTILATION

FAN STAGE VENT. AIR

4.5 Main menu

Note

Some menu items are protected by a code and can only

be accessed and adjusted by a qualiﬁed contractor.

 ACTUAL VALUES

26�04�01�0294

ACTUAL VALUES

MAIN MENU

DIAGNOSIS

PROGRAMS

SETTINGS

CONTR ACTOR

In the “ACTUAL VALUES” menu, actual values are displayed. See

the chapter “Menu structure” for a list of these.

 DIAGNOSIS

 SYSTEM STATUS

POWER-OFF

POWER-OFF indicates whether voltage is

present at the power supply utility input. If

voltage is present, the power supply utility

has not disabled any component of the

appliance.

OVEN / FIREPLACE

AIR HEAT EXCH. DEFR.

EVAPORATOR DEFROST

 FAULT LIST

The fault memory contains the ten most recent fault messages. The

display, however, can show only six fault messages at a time. Turn

the scroll wheel to access the other entries in the fault memory.

26�04�01�0300

MAIN MENU

CONTRACTORFAULT SEARCH

FAULT LIST

01. FAULT NO. 20 11: 0 0 TIME 10. SEPT 14

02. FAULT NO. 06 11: 01 TIME 10. SEPT 14

03. FAULT NO. 20 12:23 TIME 10. SEPT 14

04. FAULT NO. 06 12:24 TIME 10. SEPT 14

05. FAULT NO. 20 12:34 TIME 10. SEPT 14

06. FAULT NO. 06 12:35 TIME 10. SEPT 14

 PROGRAMS

If automatic mode is set, this is where you deﬁne the time pro-

grams that control the appliance.

 HEATING PROGRAM

HEATING CIRCUIT 1| HEATING CIRCUIT 2

You can set individual heating programs for heating circuits 1

and 2. This determines when and how often the appliance should

operate in day mode. At all other times, the appliance operates in

setback mode. You can select the set values for day and setback

mode under the menu item “ROOM TEMPERATURES”.

First, select the days on which you want to enable the heating

function:

26�04�01�0301

MONDAY

MON

MAIN MENU

PROGRAMS

HEATING PROGRAM HC

HEATING CIRCUIT 1

- on individual days (“MONDAY”, ... , “SUNDAY”)

- from Monday to Friday (“MON - FRI”)

- on Saturday and Sunday (“SAT - SUN”)

- throughout the whole week (“MON - SUN”)

Monday is initially offered.

 Select the day or a group of days.

 Conﬁrm your selection with “OK”.

You can now set three switching time pairs. The three switching

time pairs are shown on the display, to the right of the clock. A

switching time pair comprises the start time and end point, at

which the appliance returns to its previous state.

OPERATION

Operation

10| LWZ304-404 SOL www.stiebel-eltron.com

07:00 - 20:00

- -:- - - - -:- -

26�04�01�0299

MONDAY

MAIN MENU

PROGRAMS

HEATING PROGRAM HC

HEATING CIRCUIT 1

In this example, only one switching time pair has so far been

programmed. For switching time pairs 2 and 3, short dashes are

displayed instead of times. These switching time pairs are still

empty. Select one of the free switching time pairs with “OK” to

reach the area where you can set the associated start and end

time. Pressing “OK” brings up the display shown below. Set the

required time.

END

- -:- - - -:- -

TIME TIME

START

26�04�01�0302

MAIN MENU

PROGRAMS

HEATING PROGRAM HC

SETTINGS

Times can be entered in intervals of 15 minutes. You can set 16:30

or 16:45 h, but not 16:37 h. Conﬁrm your entry with OK.

Periods around midnight

Assume, for example, you want heating mode to be enabled from

22:00 h for four hours every Wednesday evening. This means the

period does not expire until the next day, Thursday, at 02:00h.

However, since the day ends at 00:00 h, two switching time pairs

are necessary for the required program. First, program the period

22:00 to 00:00h for Wednesday, then 00:00 to 02:00h for Thursday.

Deleting a switching times pair

Select the pair of switching times you want to delete. Go to the

start time change. Turn the scroll wheel to reduce the time. If you

reach 00:00 and continue to make a rotation, the pair of switch-

ing times is removed. The previously shown display appears, i.e.

dashes instead of numbers. Conﬁrm again with OK.

 DHW PROGRAM

Here, you can set the periods when DHW is heated with reference

to the set day temperatures. In the other phases, the set night

temperatures are followed. The times are set as for the heating

programs. You can select the set values for day and night mode

as described in the DHW chapter.

Example: You want to heat up DHW daily at two different times,

i.e. from 22:00h until 05:00h the following day, and then again

from 08:00h until 11:00h. Since the day begins at 00:00h, begin

programming at 00:00h. The ﬁrst pair of switching times runs

from 00:00h until 05:00h. The second pair of switching times

starts at 08:00h and ends at 11:00h. The third switching time

pair runs from 22:00h until 24:00h.

The pairs of switching times should be selected so that the DHW

cylinder can be completely heated up between the start and stop

times (at least 3 hours).

 FAN PROGRAM

The setting is made as for the central heating and DHW programs.

 HOLIDAY PROGRAM

During the holidays, if nobody is in the house, central heating,

DHW and ventilation are not required in their full scope. All set

temperatures are set to match the set values of the standby func-

tion. Deﬁne the ﬁrst and last days of the holiday. The setting is

made as described under “Time / date”. At the end of the holiday,

the appliance runs according to the set programs again.

HOLS BEGINNING

DAY

MONTH

YEAR

HOUR

MINUTE

HOLIDAYS ENDING

DAY

MONTH

YEAR

HOUR

MINUTE

 PARTY PROGRAM

Under this parameter you can extend day mode for several hours.

Enter the start and end time of your party. Times can be set that

go beyond the end of the day the party starts.

 SETTINGS

 HEATING

Two heating circuits can be operated with this appliance, e.g. one

direct heating circuit for radiator heating system and one heating

circuit with mixer for underﬂoor heating system.

Enter the “ROOM TEMPERATURES HC1” submenu for settings ap-

plicable to the ﬁrst heating circuit.

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Dieses Handbuch passt für folgende Modelle

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