Bosch EHP 6-17 LW Installation guide

Heat Pump Compress 3000

EHP 6-11 LW/M | EHP 6-17 LW

En User and Installation Guide

User and installer manual for Bosch Compress heat pumps

Bosch, 2009-11-30

Article number: 6 720 642 634

Version 2009/11

Copyright © 2009.

2

Table of Contents

Table of Contents

FOR THE USER .............................................................................................................. 5

Important information ....................................................................................... 5

This is how your heat pump works ..................................................................... 6

Technology in and around the heat pump ................................................................................................................6

Component parts of the heat pump .................................................................... 8

LWM model ............................................................................................................................................................8

LW model ................................................................................................................................................................9

Control unit .................................................................................................... 10

The control unit’s two methods to control the heat pump ........................................................................................11

Control panel .................................................................................................. 12

Controls and status lamps ....................................................................................................................................12

Menu dial .............................................................................................................................................................13

How to use the control panel .................................................................................................................................13

Basic functions (Customer level 1 .................................................................... 13

Menu outline for Basic functions (Customer level 1) ............................................................................................14

Select scrolling information on the menu display ...................................................................................................14

Set the heating ......................................................................................................................................................15

Set the desired room temperature ..........................................................................................................................18

Set the heat pump for extra hot water ....................................................................................................................18

Heating and hot water settings .............................................................................................................................19

Read the temperatures on the heat pump ...............................................................................................................19

Extra functions (Customer level 2) ................................................................... 21

Menu outline for Extra functions (Customer level 2) .............................................................................................21

Temperature settings .............................................................................................................................................22

Set extra heat curve with mixing valve ..................................................................................................................23

Hot water settings..................................................................................................................................................24

Timer control ........................................................................................................................................................24

Reading operating times on the heat pump and additional heat ............................................................................25

Set the time and date ............................................................................................................................................26

Alarms given by the heat pump .............................................................................................................................27

Return to the heat pump’s factory settings ..............................................................................................................27

Maintenance ................................................................................................... 28

Unscrew the front cover ........................................................................................................................................28

Sight glass .............................................................................................................................................................28

Particle fi lter .........................................................................................................................................................29

Protective anode ...................................................................................................................................................29

What to do if a fault occurs .............................................................................. 30

Dimmed menu display ..........................................................................................................................................30

Fuses and reset buttons on the heat pump .............................................................................................................31

All alarms ............................................................................................................................................................31

3

Table of Contents

FOR THE INSTALLER ................................................................................................... 39

Important information to the installer ............................................................... 40

Checklist ........................................................................................................ 40

What the shipment includes ............................................................................. 41

Dimensions and plumbing connections ............................................................. 42

The heat pump and collector hose in general ..................................................... 43

Transporting the heat pump ..................................................................................................................................43

Positioning the heat pump .....................................................................................................................................43

Maximum working temperatures ..........................................................................................................................43

Minimum working temperatures ...........................................................................................................................43

Fit the particle fi lter ..............................................................................................................................................43

Collector hose ........................................................................................................................................................44

Preparations before connection ........................................................................ 47

Moving the heat transfer fl uid pipe for side entry ...................................................................................................47

Supplementing the heat pump with a groundwater system .....................................................................................50

Connection to groundwater system: electrical connection .......................................................................................51

Connecting the heat pump to the heating system ............................................... 51

Connecting to the heating system without a bypass: ................................................................................................52

Connect heat pump LWM model to the heating system ...........................................................................................53

Connect heat pump LW model to the heating system ..............................................................................................54

LWM model: individual temperature control in each room, increasing volume of internal water and bypass .........55

LW model: individual temperature control in each room, increasing volume of internal water and bypass ............56

LWM model: Increasing volume of internal water without bypass ..........................................................................57

LW model: Increasing volume of internal water without bypass .............................................................................58

Filling water in the heating system ........................................................................................................................59

Filling the heat transfer fl uid in the collector hose .................................................................................................59

Connecting the heat pump to the power supply ................................................. 62

External connections to the heat pump ..................................................................................................................63

Connecting the general alarm, external input and load monitor ............................................................................64

Installer and ser vice menu (I/S) ...................................................................... 65

How to use the control panel .................................................................................................................................65

Commissioning the heat pump ......................................................................... 66

Menu displays you might need to adjust or check ...................................................................................................67

Drying program for fl oor tile .................................................................................................................................70

Manual test run of the heat pump .........................................................................................................................71

Start the heat pump with only additional heat.......................................................................................................71

Important points to check after start up .................................................................................................................71

Technical information ...................................................................................... 74

The heat pump’s factory settings ............................................................................................................................74

Sensor table ...........................................................................................................................................................74

Hot water cylinder for ECOLANE Heat Pump ......................................................................................................75

Technical information for three-phase models ........................................................................................................76

Technical information single-phase models ............................................................................................................77

4

For the user

Important information

Your new heat pump represents a new generation of heat pumps from

Bosch. It contains numerous functions to control the temperature and production of hot water in the house. The control unit includes a control and monitoring function that stores important settings about the heat pump’s operation and maintenance. The settings are made by the installer and the user via a control panel on the front of the heat pump. Settings intended for the user, are presented under the headings Basic functions and Extra functions.

When the heat pump has been installed and started there are a number of points you should check regularly. This may concern an alarm triggering or performing basic maintenance actions. First of all you should perform these actions yourself. This manual describes each step in detail. If the problem remains you should contact your dealer.

Note

It is important as the user that you read through this chapter.

Under no circumstances may the user make settings that are designed for the installer. This can cause serious malfunction of the heat pump.

5

This is how your heat pump works


The heat pump collects stored solar energy

The heat pump has been manufactured for easy and reliable use as well as to provide your house with inexpensive and environment friendly heating. The easiest way to describe how a heat pump works is to say it works like a refrigerator, however, the other way round. In a refrigerator, heat is moved from the inside to the outside. In a heat pump, heat stored in the ground, rock or water, is moved into the house. The heat pump collects a few degrees of the stored solar energy. The heat is led into the house via a hose. The temperature is then increased in the heat pump and the heat is distributed to the house’s heating system.

Rock heat Soil heat

Technology in and around the heat pump

The heat pump consists of four main parts:

The evaporator evaporates the refrigerant to gas and transfers heat from the heat transfer fl uid to the refrigerant circuit.

The condenser condenses the vapour to fl uid again and transfers the heat to the heating system.

Lowers the pressure of the refrigerant.

4. Compressor

The compressor increases the pressure of the refrigerant.

These four main parts are linked in three circuits. A refrigerant circulates in the heat pump, which in some parts of the circuit is in a liquid state and in other parts in a gas state. Read more about the properties of the refrigerant in the sidebar to the right.

See the detailed description of the technologies used in the heat pump on the next page.

Lake heat

Note

Boiling point in relation to the pressure:

The boiling point of different liquids varies with pressure, the higher the pressure, the higher the boiling point.

For example, water boils at +100ºC at normal pressure. Double the pressure and water boils at +120ºC. Half the pressure and water then boils at

+80ºC. The refrigerant in the heat pump acts in the same way, the boiling point changes when the pressure changes. However, the boiling point of the refrigerant is as low as approximately -40ºC at atmospheric pressure.

Consequently, it is also suitable for low heat source temperatures.

6


Soil

Rock

“The cold side”

1

Heat transfer fl uid pump

2 3

0ºC +100ºC

4

0ºC

6

-3ºC

Floor heating

-10ºC

5

Heat pump

Circulation pump

Radiator

Fan-assisted radiator

“The hot side”

1

2

3

Heat transfer fl uid in. The heat pump collects stored solar energy. It contains a heat transfer fl uid which is a solution of water and antifreeze, glycol. The antifreeze mixture collects the heat from the rock and with the help of the heat transfer fl uid it is led into the evaporator. The temperature is then approximately 0ºC.

In the evaporator, the heat transfer fl uid meets the refrigerant. At this stage, the refrigerant is in a fl uid state and is at approximately -10ºC. When the refrigerant meets the zero degree heat transfer fl uid it starts to boil.

It then forms a vapour, which is led into the compressor. The temperature of the vapour is 0ºC.

The pressure of the refrigerant increases in the compressor and the vapour temperature rises from 0ºC to approximately +100ºC. The warm gas is then forced into the condenser.

4

5

6

The condenser transfers the heat to the house’s heating system (radiators and fl oor heating) and the hot water system. The vapour is cooled in the condenser and becomes fl uid. The pressure in the refrigerant is still high when it is led on to the expansion valve.

The refrigerant pressure is lowered in the expansion valve. At the same time, the temperature also drops to approximately -10ºC. When the refrigerant passes the valve and the evaporator it changes to vapour again.

There is also a valve for regulating refrigerant fl ow.

The heat transfer fl uid is led out from the heat pump to the rock to collect new stored solar energy. The heat transfer fl uid is led out from the heat pump to the rock to collect new stored solar energy. The temperature of the fl uid is approximately -3ºC.

7

Component parts of the heat pump


LWM model

Three-way valve

The valve switches between heating the heating water and hot water.

Venting nipple

The nipple is used to vent the heating water in the hot water cylinder.

Hot water cylinder

The cylinder is double-shelled and holds approximately 163 litres of hot water and 57 litres of the heating water.

Electric cassette

The electric cassette is used to provide extra output in cold weather conditions, with large water consumption and at hot water peaks.

Electrical connections

Connections for the mains supply as well as sensors.

Control panel

The control panel has a background lit menu display with four rows of text information, three buttons and a dial.

Distribution box

The distribution box is enclosed.

It houses a reset function for the motor cut-out as well as miniature circuit breakers (MCB) for the heat pump and electric cassette.

Reset button

Press in the button if the overheat protector on the electric cassette has tripped. The button is located on the side.

Condenser (not visable)


Circulation pump

The pump ensures the heating water circulates within the heating system.

Heat transfer fl uid pump

The pump is insulated and features an anti-corrosive fi nish.

It ensures the heat transfer fl uid circulates from, e.g. the rock to the heat pump.

Evaporator


Compressor

The compressor increases the pressure of the refrigerant. The temperature of the vapour increases from 0ºC to approximately +100ºC.

The compressor is insulated to reduce the noise level.

Flexible hoses

The hoses counteract vibrations in the heat pump.

Control unit

The control unit is enclosed. It controls and monitors all heat pump functions.

Sight glass

Sight glass to check the level in the refrigerant circuit. Air bubbles must not form in the sight glass when the heat pump is running. However, there might be bubbles when the heat pump is started and stopped.

Expansion valve

Lowers the pressure of the refrigerant that enters the evaporator and collects energy from, e.g. the rock.

8


LW model

Three-way valve

The valve switches between heating the heating water and hot water.

Particle fi lter

The fi lter can be opened for easy cleaning. It also has a shut off function.

Electric cassette

The electric cassette is used to provide extra output in cold weather conditions, with large water consumption and at hot water peaks.

Reset button

Press in the button if the overheat protector on the electric cassette has tripped. The button is located on the side.

Condenser


Circulation pump

The pump ensures the heating water circulates within the heating system.

Flexible hoses

The hoses counteract vibrations in the heat pump.

Compressor

The compressor increases the pressure of the refrigerant.

The temperature of the vapour increases from 0ºC to approximately +100ºC. The compressor is insulated to reduce the noise level.

Sight glass

Sight glass to check the level in the refrigerant circuit. Air bubbles must not form in the sight glass when the heat pump is running. However, there might be bubbles when the heat pump is started and stopped.

Electrical connections

Connections for the mains supply as well as sensors.

Control panel

The control panel has a background lit menu display with four rows of text information, three buttons and a dial.

Distribution box

The distribution box is enclosed.

It houses a reset function for the motor cut-out as well as miniature circuit breakers (MCB) for the heat pump and electric cassette.

Control unit

The control unit is enclosed. It controls and monitors all heat pump functions.

Evaporator


Heat transfer fl uid pump

The pump is insulated and features an anti-corrosive fi nish. It ensures the heat transfer fl uid circulates from, e.g. the rock to the heat pump.

Expansion valve

Lowers the pressure of the refrigerant that enters the evaporator and collects energy from, e.g. the rock.

9

Control unit

Control unit

The control unit is the brains of the heat pump. It makes sure the heat pump gives the best energy savings and that it runs for many years. The control unit controls and monitors the heating and hot water supply in your house. The monitoring function is especially important. It shuts down the heat pump in the event of operational disturbances so that no critical parts are damaged.

Three-way valve

Electric cassette

(additional heat)

Additional heat gives more output

When the heat pump can not manage to heat the house by itself, for example, if there is a considerable drop in the outdoor temperature, the control unit ensures the additional heat source is connected. Together the heat pump and additional heat guarantee the right temperature in the house. Additional heat is provided by a built in electric cassette. Additional heat can never completely take over the heating from the heat pump. It only adds the output necessary for the heat pump to be able to produce the right temperature. When the heat pump can once again manage heating on its own the additional heat is automatically disconnected.

Control unit

Hot water is given priority over heating water

In a house with water based heating a difference is made between heating water and hot water. The heating water is for radiators/fl oor heating and hot water is for showers and taps. Hot water is heated in a hot water heater.

The hot water heater is fi tted with a sensor that senses the temperature of the hot water. LWM models include a hot water heater in the heat pump while LW models have an external hot water heater. The heating water passes through the hot water cylinder’s outer shell and heats up the hot water heater’s inner tank. The control unit makes sure the heating of hot water is always given priority over the heating of the heating water. This means you never need to be without hot water. The control unit controls a three-way valve that switches between heating the heating water and hot water. Once the hot water has been heated the three-way valve switches so that the heating water is heated.

Hot water

Heating water

Double-shelled hot water heater

10

Control unit

The control unit’s two methods to control the heat pump

The control unit uses two different methods to control the heat pump.

These two methods are: Control with an outdoor sensor and Control with an outdoor sensor supplemented with a room sensor.

Control with outdoor sensor

Control with an outdoor sensor is the most common method used by the control unit to control the heat pump. A sensor is installed on the external wall of the house. It sends out signals for regulating the heat pump. Control with an outdoor sensor means that the heat pump automatically regulates the heating in the house depending on the outdoor temperature. If the outdoor temperature drops, i.e. it becomes colder; the radiators inside the house will become warmer.

You determine the temperature of the radiators, in relation to the outdoor temperature, with the help of a number of settings such as selecting the heat curve on the control unit. A lower curve gives higher energy savings.

Control with outdoor sensor supplemented with room sensor

Control with an outdoor sensor supplemented with a room sensor means that you also place a sensor in a central position inside the house. This is connected to the heat pump and provides the control unit with information about the room temperature. The signals affect the control unit’s settings

(curves) and ensure the heat pump gives the best possible energy savings.

This control method is used when factors other than the outdoor temperature infl uence the indoor temperature. Examples include the use of a stove or fan-assisted radiator or if the house is sensitive to the wind.

Note

It is only the room where the room sensor is located that can infl uence regulation of the temperature.

Note

The room sensor infl uence is inhibited

24 hours after using clock setting for the heating, or any type of external control of the heat pump.

11

Control panel

Control panel

All settings are made from the control panel. It also displays heat production statistics and information about different alarms. When you have made your settings, the control panel makes sure they are saved in the control unit to carry out your wishes.

Controls and status lamps

Power switch (ON/OFF)

You start and stop the heat pump using the power switch button.

Lamp on: The heat pump is on.

Lamp fl ashes: The heat pump is off.

Alarm status

Lamp fl ashes: A fault has occurred in the heat pump.

Lamp on: The alarm has been acknowledged, but the fault remains.

Temp. incr. / decr.

Temp. incr. / decr.

Pressing once gives a shortcut to the most frequent temperature settings.

Info

Menu

Info

Pressing once gives continuous information about the heat pump’s and additional heat’s operating conditions.

Menu

Press once to enter the main menu.

The main menu contains all setting menus and temperature displays.

Reg 637 K1

040622 16:08:15 Tu temp. Info Menu

Status lamps

Power switch

(ON/OFF)

Menu display

Rego 637 K1

040622 16:08:15 Ma temp. Info Menu

Menu buttons Menu dial

12

Menu dial

The menu dial is used to scroll through the menu display windows. Turn the menu dial clockwise (to the right) to move down through the menus. Turn the menu dial anti-clockwise (to the left) to move up through the menus. You also determine the values of different settings by using the dial.

The menu display gives you information and the chance to make settings. You can:

Choose different temperature and hot water settings.

Choose extra hot water and the holiday function.

See alarm causes and receive corrective instructions.

Obtain operating statistics.

Initial menu display

Reg 637 K1

040622 16:08:15 Tu

Temp. Info Menu

Control panel

How to use the control panel

The principle of the control panel is based on the user using three menu buttons and a menu dial to move between the different menus and settings. On the lower row of the menu display you will always see information about the signifi cance of the buttons. The function of the buttons changes depending on which window you are currently in.

Example

If, from the initial menu, you press the Heat button, you will access the menu Temp. incr. / decr.. +/-. In this menu you can increase and decrease the heating in the house. Note that the signifi cance of the buttons has now changed. You can either return to the initial menu by pressing the Return button or you can choose to change the heating setting in the house by pressing the Adjust button. If you press the Adjust button you can increase or decrease the heating in the house by using the menu dial. Save your adjustment by pressing the Save button.

+

Reg 637 K1

040622 16:08:15 Tu

Temp. Info Menu temp. +/-

0 5,0 10

Return Adjust

Basic functions

( Customer level 1)

Basic functions (Customer level 1) are the functions most frequently used and the ones you have the most benefi t of. You reach the basic functions by pressing one of the Heat, Info or Menu buttons in the initial menu. The designation K1 in the upper right corner indicates you are in Basic functions

- Customer level 1.

Initial menu Customer level 1

Reg 637 K1

040622 16:08:15 Tu temp. Info Menu

Date Time Day

13

Basic functions - Customer level 1

Menu outline for Basic functions (Customer level 1)

Reg 637 K1

040622 16:08:15 Tu temp. Info Menu

Note

Each menu is numbered in the lower right-hand corner; this indicates which main display it is associated to.

temp. +/-

Page 16

Temp. Fine-tune

Page 17

Room temperature

Page 18

Extra hotwater

Page 18

STANDBY no rad heat required

No need for hot water mode

Page 15

HOT WATER MODE

Heat pump only

Page 15

HEATING Mode

HP and add. heat

Page 15

Heat rad required

Heat pump starts in #### seconds

Page 15

Main menu

Indoor temperature settings 1

Page 19

Temperature settings

Temp. incr. / decr.

range 0-10 1.1

Page 16

Temp. settings

Adjust temp.

range -10/+10 1.2

Page 17

Temp. settings

Int. temp 1.10

Page 18

=

=

The menu display is standard on all heat pumps.

The menu display is only shown on the heat pump in combination with an extra sensor or for a specifi c model.

Main menu

Adjusting the hot water settings 2

Page 19

Hot water setting

Duration of add. hot water 2.1

Page 18

Main menu

Monitor all temperatures 3

Page 19

Temperature readings

Return radiator GT1


Out GT2


Hot water GT3


Shunt, fl ow GT4


Room GT5


Compressor GT6


Heat trfl uid out GT8


Heat tr fl uid in GT9


Ht trfl d(coll)inGT10


Httrfl d(coll)out GT11

Page 20

Select scrolling information on the menu display

If you press the Info button in the initial menu, you will receive continuous information about the heat pump’s operation and working temperatures.

This is what to do:

1. Press the Info button in the initial menu.

Here follows a few of the windows displayed:

Reg 637 K1

040622 16:08:15 Tu temp. Info Menu

14

The heat pump is in standby mode.

The heat pump is producing hot water. You see at which temperature the heat pump will stop and the present temperature. Note that the stop temperature is read at the bottom of the heater. The hot water is a few degrees warmer.

The heat pump and additional heat are running.


STANDBY

No rad heat required

No need for hot water mode

HOTWATER MODE

Heat pump only

Supp. temp. 53,0°

Present temp 42.0°

HEATING Mode

HP and add. heat

Supp. temp. 45,0°

Present temp 44.0°

Heat rad required

Heat pump starts in 320 seconds

The heat pump has received signals that it should produce heating. It now waits for the restart time to countdown to zero.

Return to the initial menu by pressing one of the buttons or turn the dial.

Set the heating

It is easy to set the heating level on the heat pump. However, before we explaaccord. to clockow to do this it is important to understand the relation between the outdoor temperature, return temperature and heat curve slope. The easiest way to explain the relation is with a heat curve.

Heat cur ve

You use the heat curve to help set the indoor temperature you would like. The heat pump is controlled by the outdoor temperature. When the weather becomes colder, the heat pump ensures more heating is produced automatically.

Return temperature:

The return temperature is the temperature of the water that returns to the heat pump from the radiators. The water led out from the heat pump to the heating system is normally 7-10ºC higher than the return temperature.

When the outdoor temperature is -10ºC and curve 4 is set, the pump attempts to keep the return water at approximately 40ºC.

Outdoor temperature:

The outdoor temperature determines how much heating the heat pump should produce. A sensor placed outdoors sends signals to the control unit, which then adjusts the heat pump.

Cur ve slope:

You can change the curve slope to increase or decrease the heating in the house. The scale is between 0-10.

Note

On delivery the heat pump curve slope is set to position 4. This means that the return temperature is +35ºC when it is 0ºC outdoors.

15


Change the cur ve slope

The heat pump’s production of heat is adjusted by increasing or decreasing the curve slope in the Temp. incr. / decr. menu. This is especially effective in cold weather conditions.

Return temperature (ºC) Curve slope (0-10)

Outdoor temperature (ºC)

Dashed line:

If the return temperature exceeds 57ºC an alarm is given and the compressor switches off. The heat pump starts automatically when the return temperature drops.

Cur ve slope:

2-4 Normal setting for fl oor heating..

4-6.5 Normal setting for radiators.

7-10 Abnormal high setting.

From the heat curve we see that curve slope 4 gives a return temperature of +35ºC when it is 0ºC outdoors.

If the outdoor temperature drops we can see that the return temperature increases. The colder the outdoor temperature the higher the return temperature. At an outdoor temperature of approximately -30ºC we see the curve slope has nearly reached the limit value (+57ºC) for the return temperature.

In cold weather (below +5ºC):

If you are not satisfi ed with the indoor temperature when it is colder than +5ºC outdoors, you need to change the slope of the heat curve.

This is what to do:

1. Press the Heat button in the initial menu.

temp. +/-

0 4,0 10

Return Adjust

2. Press the Adjust button.

3. Turn the menu dial clockwise to increase the heating.

Turn the menu dial anti-clockwise to lower the heating.

(Adjust in small increments, 0.2-0.6 units, is usually enough.)

temp. +/-

0 5,0 10

Return Save

4. Save the new value by pressing the Save button.

Note

You should wait at least two days when increasing or decreasing the heating before making a new adjustment.

If it is still diffi cult to get a comfortable indoor temperature at an outdoor temperature around 0ºC, despite several attempts, you should adapt the heat curve. Read about how to “adapt the curve” in the section

Extra functions – Customer level 2 /

Temperature settings / Adapting the heat curve.

16


Fine-tune the heat cur ve

The heat curve can also be fi ne-tuned. Fine-tuning means that you offset the heat curve in parallel. Fine-tuning is done from the Temp. fi ne-tune menu. The diagram for fi ne-tuning shows how the dashed line has been offset upwards in parallel. This means the heating has been fi ne-tuned in a positive direction and the heat pump will be instructed to maintain a higher temperature on the return water at all outdoor temperatures.

Return temperature (ºC)

By using the menu dial on the control panel the fi ne-tuning line has been moved up so the heat pump produces more heat.

In warm weather (above +5ºC):

If you are not satisfi ed with the indoor temperature when it is warmer than

+5ºC outdoors, you should offset the curve in the Temp. fi ne-tune menu.

This is what to do:


2. Turn the menu dial clockwise until you reach the menu Temp. fi netune.3.

Temp. Fine-tune menu

-10° 0,0 10°

Return Adjust


4. Turn the menu dial clockwise to increase the room temperature. Turn the menu dial anti-clockwise to lower the room temperature. (Adjust in small increments, 0.2-0.6 units, is usually enough.)


Outdoor temperature (ºC)

17


Set the desired room temperature

If you have a room sensor connected to the heat pump you can set the required temperature in the room from the Room temperature menu. From Extra functions (Customer level 2) you can also set how much you want the sensor to infl uence the heating system.

This is what to do:


2. Turn the menu dial clockwise until you reach the menu Room temperature.

Room temperature

10° 20,0 30°

Return adjust


4. Turn the menu dial clockwise to increase the room temperature. Turn the menu dial anti-clockwise to lower the room temperature.


Note

The example describes how to set the required room temperature with the help of a connected room sensor. The range is 10ºC to 30ºC.

Set the heat pump for extra hot water

You can obtain extra hot water by temporarily increasing the temperature of the water in the hot water cylinder. This may be appropriate when, for example, a large number of people need to shower. You choose how long the function should run using the Extra hotwater menu. . This is what to do:


2. Turn the menu dial clockwise until you reach the menu Extra hotwater.3. .

Add. hot water

1h 24h 48h

Return adjust


4. Turn the menu dial clockwise to choose the number of hours that the electric cassette should be on (e.g. 24 hours).

Add. hot water

1h 24h 48h

Return Save


Note

When the set time has elapsed you must repeat the setting to get extra hot water again.

18


Heating and hot water settings

Move to the temperature settings for heating on Customer level 1 like this:

1. Press the Menu button in the initial menu.

Main menu


Return Select

2. Press the Select button and scroll through the heating menus with the menu dial.

Move to the temperature settings for hot water on Customer level 1 like this:

1. Turn the menu dial clockwise until you reach the menu Adjusting the hot water settings .

Main menu


Return Select

2. Press the Select button and scroll through the hot water menus with the menu dial.

Read the temperatures on the heat pump

There are several different temperature sensors in the heat pump. Each sensor plays an important part in the heat pump’s daily operations. It may, for example, adjust the heat production so that the pump does not become overheated. Proceed as follows to read the temperatures on the heat pump:

1. Press the Menu button in the initial menu.

2. Turn the menu dial clockwise until you reach the menu Monitor all temperatures (menu 3).

Main menu

Monitor all temp.

on the screen 3

Return Select

3. Press the Select button.

4. Turn the menu dial to scroll through all the heat pump’s temperature sensors. See the next page.

Reg 637 K1

040622 16:08:15 Tu

temp. Info Menu

Note

Each menu is numbered in the lower right-hand corner; this indicates which main display it is associated to.

19


All menus relating to temperature sensors

All the menus associated with the heat pump temperature sensors are shown below. Note that you cannot make any settings in these menus, only read the current values. Some menus are standard for all models of Ecolane SE while others are only available in combination with different accessories.

The sensors give an alarm if the temperature is outside of the permitted range/values.

Note

All sensors are not included as standard on the heat pump, some are available as accessories for different application areas. See more information under respective menus.


Return radiator GT1

Off 41.3

O

Return now 40.3

O


Out GT2

14,0°

Return


Hot water GT3

Set 51.0°

Return now 50.0°


Shunt, fl ow GT4

Set 40.3°



Room GT5

Set 20.0°



Compressor GT6

90,0°

Return


Heat tr fl uid out GT8

45,0°

Return


Heat tr fl uid in GT9

40,3°

Return


Ht trfl d(coll)inGT10

0,0°

Return


Httrfl d(coll)outGT11

-4,0°

Return

The menu shows the temperature in the heating system’s return, i.e. the water from the radiators back to the heat pump accord. to clockeating mode. The temperature varies with the outdoor temperature.

The menu shows the outdoor temperature. Some deviation compared to the true temperature may occur due to thermal radiation from the house to the installed outdoor sensor.

The menu shows the set and present temperature in the lower section of the outer container in the hot water heater. The temperature is approximately 5ºC lower than the temperature of the hot water inside the inner container.

The menu only applies together with a fl ow sensor. If an extra curve with mixing valve is used, for example, for a fl oor heating system, you can see the temperature on the fl ow water in the circuit. The temperature varies with the outdoor temperature.

The menu only applies together with a room sensor. The menu shows the set point value and present temperature in the room where the sensor is fi tted.

The menu shows the compressor’s working temperature. The temperature varies between 70ºC and 125ºC during operations.

The menu shows the temperature of the radiator water as it leaves the heat pump. It varies depending on the outdoor temperature and whether the heat pump is accord. to clockot water production mode.

The menu shows the temperature of the water that is led into the heat pump. It varies depending on the outdoor temperature and whether the heat pump is accord. to clockot water production mode. The heat pump stops at 57ºC for reasons of safety.

The menu shows the temperature of the heat transfer fl uid that is led into the heat pump from the bore hole or the ground. It can vary between -5ºC to +15ºC during a season.

The menu shows the temperature of the heat transfer fl uid that is led out of the heat pump to the bore hole or the ground. Normally, during operations, it is 1.5 - 5.0 degrees lower than the heat transfer fl uid that is led into the heat pump.

20

Extra functions - Customer level 2

Extra functions

(Customer level 2)

The section Basic functions (Customer level 1) contains the functions that you will probably use the most and which you will receive the most benefi t from. However, there are numerous extra functions that you can use to control your heat pump.

This can, for example, include activating the heat pump’s holiday function or setting the time and date. If no settings are made on Customer level 2 (K2), the menu display will automatically return to Customer level 1 (K1) after 30 minutes.

Proceed as follows to access the extra functions on Customer level 2:

1. Press the Heat button until Access = CUSTOMER2 is displayed.

2. Press the Menu button to open the Main menu. From Customer level 2 you also have access to all Customer level 1 functions.

( Initial menu)

Reg 637 K2

040622 16:08:15 Tu

temp. Info Menu

Press the Heat button until Access

= CUSTOMER2 is displayed.

Menu outline for Extra functions (Customer level 2)

Reg 637 K2

040622 16:08:15 Tu

temp. Info Menu

Menu principal

Room temp. setting 1

Page 23

Heat curve fi ne-tuning 1.3

Page 22

V3V +/interv. 0-10 1.5

Page 23

Adjust. V3V range -10/+10 1.6

Page 23

Adjust curve

V3V 1.7

Page 23

Setting of room sensor infl 1.11

Page 22

Setting of holiday function 1.12

Page 22

Remote control temperature 1.13

Page 22

Setting of summer disconnection 1.14

Page 22

Main menu


Page 24 interval for hot water peak 2.2

Page 24

Main menu

Timer control settings 4

Page 24

Clock setting HP accord. to clock 4.1

Page 24

Setting level heat pump +/- 4.1.1

Page 25

Clock setting DHW accord. to clock 4.3

Page 25

Main menu

Op. time readings

HP and add. heat 7

Page 25

Add. heat in operat.

number of hours? 7.1

Page 26

Distribution HP

DHW-Rad in % 7.2

Page 26



Page 26

= The menu display is standard on all heat pumps.

= The menu display is only shown on the heat pump in combination with an extra sensor or for a specifi c model.

Note

Main menu

Clock, setting time and date 10

Page 27

Main menu

Alarm logging of all alarms 11

Page 27

Main menu

Return to factory settings 12

Page 27

From Customer level 2 you also have access to all the basic functions on

Customer level 1.

Only the most frequently used menus in Customer level 2 are shown in the menu outline. All the menus cannot be presented due to space limitations. Use the dial to scroll through the menus.

21


Temperature settings

Proceed as follows to access the temperature settings for the heating on Customer level 2:


2. Press the Menu button.

3. Press the Select button and scroll through the menus using the menu dial.

Fine-tune the heat cur ve

You can “break” the heat curve up or down every fi fth outdoor degree. For example, you can make a hump in the curve at 0ºC. Navigate to menu 1.3, press Select and turn the menu dial until 0°C is displayed in the upper left part of the menu. Press

Adjust and turn the dial to increase or decrease the return temperature. The change must not exceed 1 - 2°C. Press Save and wait at least 24 hours prior to any further adjustment. The purpose of breaking the curve is to be able to infl uence the heat pump’s heat production at extra sensitive outdoor temperatures.

Room sensor infl uence

The menu is only shown for heat pumps having a room sensor installed. You use the menu to set how much the room sensor should infl uence the heat curve. A higher value will have a greater effect. Please note that the room sensor only fi ne-tunes the heat curve. Consequently, it is important the basic setting of the heat curve’s slope and fi ne-tuning are correct.

Holiday mode

The menu is only shown for heat pumps having a room sensor installed. The holiday function gives you the possibility to choose a number of days when the room temperature will be lowered to 15ºC (the temperature is not adjustable).

When the days have passed the heat pump returns to the normal heating setting.

Hot water production is not affected by the holiday function.

Remote control

The menu is only shown for heat pumps having a room sensor installed. In addition, special remote control equipment is needed. This equipment is available as an accessory. You can switch between the remote control mode and normal mode using a telephone.

Summer disconnection

The function means the heat pump only produces hot water when the outdoor temperature rises above the set value.

Main menu


Return Select


Heat curve fi ne-tuning 1.3

Return Select


Setting of room sensor infl 1.11

Return Select


Setting of holiday function 1.12

Return Select


Remote control temperature 1.13

Return Select


Setting of summer disconnection 1.14

Return Select

22


Set extra heat curve with mixing valve

If you have fl oor heating combined with radiators, you should set an extra heat curve with mixing valve. The mixing valve is a valve that lets water through in different amounts. It prevents the fl oor from becoming too hot and destroying the fl ooring. The menu is only displayed when there is an extra fl ow sensor, T4

(GT4), on the heat pump. You set the extra heat curve using two menus: Mix. valve incr/decr and Mix. valve fi ne-tune.

Increase or decrease the mixing valve


2. Press the Heat button.

3. Turn the menu dial clockwise until you reach the menu Mix. valve incr/ decr.4.

Mix. valve incr/decr

0 2,0 10

Return adjust


5. Turn the menu dial clockwise to choose a higher heat curve.

Turn the menu dial anti-clockwise to choose a lower heat curve.


Note

The initial position of the fl oor heating circuit is heat curve 2.

The scale covers the range 0 to 10.

Extra heat curve with mixing valve only works with an extra fl ow sensor

T4 (GT4).

Fine-tune the mixing valve


2. Press the Heat button.

3. Turn the menu dial clockwise until you reach the menu Mix. valve fi ne-tune.

Fine tune mix. valve

-10° -0,0° 10°

Return adjust


5. Turn the menu dial clockwise to set an upward, parallel offset on the curve.

Turn the menu dial anti-clockwise to set a downward parallel offset on the curve.


Note

The example describes how to fi netune the extra heat curve. The scale covers the range -10ºC to +10ºC.

23


Hot water settings

Hot water peak

Recurring increase in the hot water temperature

The Range for hot water peak menu is used to set the range for a recurring increase in the hot water temperature. This function takes the water temperature temporarily up to approximately 65°C. Three settings are possible: inactive (default), daily or preferred day.

Timer control

Open the setting menus for timer control like this:



3. Turn the menu dial clockwise until you access the menu Timer control settings (menu 4).


Clock setting of the heat pump according to clock

The function Clock setting HP accord. to clock is for those who want the heat pump to produce different amounts of heat at different times of the day and on different days of the week. This allows you to make further energy savings.

The room sensor T5 (GT5) infl uence is inhibited 24 hours after using clock setting for the heating, or after any type of external control of the heat pump.

This allows the heating to return to ordinary settings. In practise this means that should clock setting of the heating apply each night, then the room sensor has no function except temperature readings.

Example:

You want to set the heat pump so that it maintains a 3ºC lower radiator temperature on Mondays between 22:00 and 06:00.

1. Turn the dial clockwise until you access the menu Clock setting HP accord. to clock (menu 4.1).


3. Turn the menu dial clockwise to choose the day. Now press the Adjust button to select the weekday with the symbol ^. Turn the menu dial clockwise one step to activate the start day. The weekday now has a capital letter.

4. Press the right-hand arrow (->) until the cursor reaches the fi rst two zeros

(00).

Hot water range for hot water peak 2.2

Return Select

Main menu


Return Select

Main menu

Timer control accord. to clock 4

Return Select

Note

When you have time based tariffs with cheaper electricity for example during the night, any savings may be lost if the return to normal temperature occurs when the more expensive electricity price applies.

Clock setting

Clock setting HP accord. to clock 4.1

Return Select

Timer control HP 1

Mon 00:00-00:00

Return adjust


Mon 00:00-00:00

Return ->


Mon 00:00-00:00

Return ->

24

5. Turn the menu dial until the value 22:00:00 is displayed.

6. Press the right-hand arrow twice (->) to move the cursor two steps to the right.

7. Turn the menu dial until the value 06:00 is displayed.

8. Press the right-hand arrow so it is replaced by the Save function.

9. Finish by pressing the Save button.

10. Press the Return button.

11. Turn the menu dial clockwise until you reach the menu Setting level heat pump +/ (menu 4.1.1).

12. Press the Select button and set the temperature to -3ºC, which is to apply for the chosen time intervals.

Do not set a too large temperature reduction, max approx. 3ºC for radiator systems and max approx. 1.5ºC for fl oor heating systems is suffi cient.

13. Finish by pressing the Save button.



Mon 22:00-06:00

Return <- ->


Mon 22:00-06:00

> >

Return <- Save


Setting level heat pump +/- 4.1.1

Return Select

Note

If you would like to make the setting for every day of the week, carry out the instruction shown in the example seven times, once for each weekday.

The temperature set under 4.1.1 applies to all active time intervals.

Clock setting of the hot water according to clock

The Clock setting DHW accord. to clock (menu 4.3) works in exactly the same way as Clock setting HP accord. to clock (menu 4.1). You can choose to completely disable hot water heating to save energy. This is primarily effective when peak tariffs are charged. The procedure is the same as in the previous example. Use this to make your settings.

Reading operating times on the heat pump and additional heat

Statistics concerning the heat pump and additional heat operations are stored in the control unit. For example, you can see how many hours they have been running. To view the operating times for the heat pump and additional heat:



Clock setting

Clock setting DHW accord. to clock 4.3

Return Select

Main menu


Return Select

25


3. Turn the menu dial clockwise until you reach the menu Op. time readings on HP and add. heat (menu 7).


The number of hours the heat pump has been in operation

The menu shows the number of hours that the heat pump has been in operation since the day of installation.

The heat pump’s hot water mode and heating mode operations as a percentage

The menu shows the heat pump’s allocation between hot water mode and heating mode. The allocation is stated as a percentage.

The number of hours additional heat has been in operation

The menu shows the number of hours additional heat has been in operation since the day of installation.

Main menu


HP and add. heat 7

Return Select




Return Select


Distribution HP

DHW-Rad in % 7.2

Return Select


Add. heat in operat. number of hours? 7.3

Return Select

Set the time and date

The heat pump has functions that are dependent on both the clock and date. Thus, it is important that these are correct. This is how you access the menu Clock, setting time and date:



26

3. Turn the menu dial clockwise until you reach the menu Clock, setting time and date (menu 10).

4. Press the Select button and make your settings using the menu dial and menu buttons.

Alarms given by the heat pump

You can easily see any alarms given by the heat pump. The menu provides you with information about the alarm type and when it occurred. If there is an asterisk (*) in the menu window this means the alarm is still active, i.e. the cause of the alarm remains. This is how you access the Alarm logging of all alarms (menu 11):



3. Turn the menu dial clockwise until you reach the menu Alarm logging of all alarms (menu 11).

4. Press the Select button and scroll using the menu dial between any alarms that may have previously occurred. Alarms are stored in chronological order. Read more about the heat pump’s alarms under the heading All alarms.

Return to the heat pump’s factory settings

If you want to restore the factory settings on the heat pump you can easily reset all the settings you have made. This is how you access the Return to factory settings menu (menu 12):



3. Turn the menu dial clockwise until you reach the menu Return to factory settings (menu 12).


5. Return to the factory settings by pressing the Yes button.

When you return to the factory settings all the adjustments made on

Customer levels 1 and 2 are reset such as temperature settings and time control settings.


Main menu

Clock, setting time and date 10

Return Select

Main menu K2


Return Select

Main menu

Alarm logging of all alarms 11

Return Select

Main menu K2


Return Select

Main menu


Return Select

27

Maintenance

Maintenance

Your heat pump requires a minimum of maintenance, however, we still recommend some servicing to get optimal performance from your heat pump. Check the following items a few times during the fi rst year. You should then check them once or twice a year:

Protective anode (only models with a stainless steel hot water cylinder)

Unscrew the front cover

Warning

For reasons of safety the main power supply must be disconnected before working on the heat pump.

Only an accredited refrigeration company is permitted to work on the refrigerant circuit.

Unscrew the front cover

On certain models you will need to open the front cover to access some of the maintenance areas, e.g. the sight glass and particle fi lter. The front cover is secured at the top by two screws.

This is how you remove the front cover from the heat pump:

1. Unscrew the two screws on the top. See the picture.

2. Tilt the front cover towards you.

3. Lift the front cover up to release the lower edge.

Remove the front cover by unscrewing the screws on the top.

Sight glass

Sometimes when the heat pump has started you can see the fl uid in the refrigerant circuit bubble for a few minutes in the sight glass. This is completely normal. However, if it bubbles continuously you should contact your dealer.

Sight glass

If the sight glass shows green this means there is no moisture in the system. If it is yellow, there is moisture in the system. If this happens, contact your dealer.

LWM model

28

Particle fi lter

The task of a particle fi lter is to ensure no particles or dirt enter the heat exchangers. Over time the fi lter can become clogged and will need cleaning. There are particle fi lters on both the hot and cold sides. To clean the particle fi lters:

1. Shut down the heat pump using the ON/OFF button.

2. Close the valve and unscrew the sealing cap.

3. Loosen the circlip holding the screen in the valve. Use the supplied circlip pliers.

4. Lift out the screen from the valve and wash clean with water.

5. Refi t the screen, the circlip and sealing cap.

6. Open the valve and start the heat pump using the ON/OFF button.

Particle fi lter

Maintenance

Note

On the cold side the particle fi lter is located outside of the heat pump. It may be concealed by insulation material or a black box.

On LW model the hot side’s particle fi lter is fi tted inside the heat pump.

On LWM model it is located outside of the heat pump.

Screen Circlip Sealing cap

LW model

Protective anode

Only applies to heat pumps with integrated, stainless hot water cylinder.

A protective anode is located in the top of the cylinder with the task of preventing corrosion. The hot water cylinder must be fi lled with water in order for the anode to work.

If an error occurs, an alarm is activated in the control unit.

29

What to do if a fault occurs


The control unit has an advanced monitoring system that gives alarms if anything unforeseen happens in the heat pump. Most alarms are rectifi ed by you the user and there is never any risk that you can damage anything in the heat pump when you reset an alarm.

If a room sensor is installed the lamp on this will come on when the heat pump gives an alarm.

Example of an alarm:

Info button:

When you press the Info button and turn the menu dial, information is displayed as well as possible actions to rectify the alarm.

Time when the alarm occurred.

Cause.

Date when the alarm occurred.

Alarm

Power failure

040622 16:08:15

Info Ackn.

Ackn. button:

When you press the Ackn. button, the alarm lamp on the control panel goes out and the heat pump starts again within 15 minutes if there is a heating requirement. If the fault has not been rectifi ed the lamp will remain lit. Should several alarms have occurred on the heat pump, turn the menu dial clockwise to fi nd out more information about each alarm.

Info Acknowledge

Dimmed menu display

Possible cause 1: Blown fuse in the house’s fuse box/distribution box.

Action: 1. Check the fuses in the house’s fuse box.

2. Change the fuse if necessary. If miniature circuitbreakers have tripped these are reset by pushing up the toggle switch.

3. The heat pump automatically returns to its operating mode 15 minutes after the fault has been rectifi ed.

Possible cause 2: The heat pump’s miniature circuit-breaker has tripped.

Action: 1. Reset the heat pump’s miniature circuit-breaker by pushing up the centre toggle switch.

2. The heat pump automatically returns to its operating mode 15 minutes after the fault has been rectifi ed.

Miniature circuitbreaker LWM model

Miniature circuitbreaker LW model

Note

For technical reasons the heat pump does not restart until 15 minutes after a stoppage.

30


Fuses and reset buttons on the heat pump

LWM model

Particle fi lter

Cleanable, with shutoff switch.

Fuse 1

Reset for motor cut-out compressor.

Fuse 2

Reset switch for the heat pump’s miniature circuit-breaker.

Fuse 3

Reset switch for the electric cassette’s miniature circuit-breaker.

Fuse 4

Reset button for the electric cassette overheat protection.

Note: The button must be pressed in fi rmly.

Sight glass

LW model

Sight glass

All alarms

An alarm can sometimes occur temporarily due to various reasons.

However, there is never a risk involved in resetting an alarm. All the alarms that can appear in the menu display are described on the following pages. The descriptions give you an idea about the nature of the alarm and what you can do to rectify it. The text often refers to different fuses and reset buttons on the heat pump. These are shown in the fi gures above.

List of all alarms:

Motor cut-out compressor

Motor cut-out HTF pump

Low pressure switch

High pressure switch

Power failure (3-phase)

3-phase incorrect (3-phase)

High return to the heat pump

Heat transfer fl uid out max

High heat transfer fl uid delta

Heat transfer fl uid in under limit and heat transfer fl uid out under limit

31


Motor cut-out compressor (MB1)

Possible cause 1: Intermittent fault or overload on the power supply.

Action: 1. Press the Ackn. button.

The alarm indication goes out even if the fault has not been rectifi ed.

2. Reset the motor cut-out on the heat pump (Fuse 1).

3. Wait for the heat pump to start.

Possible cause 2: Current level (A) on the motor cut-out is set too

Action: low.

The current drawn by the compressor varies during summer/winter operations.

1. Contact your dealer.

Possible cause 3: Contactor or cut-out faulty, or loose electrical connections to the compressor.

Action: 1. Contact your dealer.

Possible cause 4: Compressor error.


Motor cut-out HTF pump (MB2)

Possible cause 1: The HTF pump is blocked due to contamination.


2. Loosen the venting screw and remove the dirt.

3. Help to start the pump with a screwdriver.

The alarm indication goes out even if the fault has not been rectifi ed.

Possible cause 2: Faulty electric motor on HTF pump.


Possible cause 3: Temporar y error.

Action: 1. Contact your dealer should repeated faults occur.

The menu display shows:

Alarm (MB1)

Compr. circ. switch

040622 16:08:15

Info Ackn.

Note

The reset switch for the compressor can be found under heading Fuses and resetting buttons on the heat pump.


Alarm (MB2)

HTF c-pump switch

040622 16:08:15

Info Ackn.

Note

The alarm indication goes out when acknowledging the alarm even if the fault has not been rectifi ed.

32

Compressor temperature T6 (GT6)

Possible cause 1: The working temperature of the compressor is too high.


2. Contact your dealer at repeated alarms.

Possible cause 2: Intermittent temperature rise due to abnormal operating conditions.


2. Wait and see.

Low pressure switch (LP)

Possible cause 1: Air in the heat transfer system.


2. Check the expansion tank.

3. Fill with fl uid if necessary.

4. Listen for air in the system. If air is heard constantly, contact your dealer.

Possible cause 2: The particle fi lter on the cold side is clogged.

Action: 1. Check the particle fi lter.

2. Clean the particle fi lter if necessary.

3. Press the Ackn. button.

Possible cause 3: Lack of refrigerant in the heat transfer circuit.


2. Wait for the heat pump to start.

3. Check whether it bubbles continuously in the sight glass.

4. If it bubbles continuously, contact your dealer.

Possible cause 4: The HTF pump has stopped or is set at too low a speed.


2. Check that the pump has not stopped or is set at the wrong speed.

Possible cause 5: Ice formation in the heat exchanger due to a lack of anti-freeze in the heat transfer circuit.


Possible cause 6: Faulty expansion valve (the alarm appears in time periods of 3-4 weeks).




Alarm (GT6)

Compressor superheat

040622 16:08:15

Info Ackn.


Alarm (LP)

Low pressure switch

040622 16:08:15

Info Ackn.

33


High pressure switch (HP)

Possible cause 1: Air in the heating system.


2. Check whether there is air in the radiators.

3. Fill the heating system and vent if necessary.

Possible cause 2: Not enough fl ow over the heat pump.


2. Check that the heat carrier pump has not stopped.

3. Check that all the valves are open. The thermostat valves accord. to clockeating systems should be fully open and in fl oor heating systems at least half of the coils should be fully open.

4. Possibly increase the speed of the heat carrier pump.

Possible cause 3: The particle fi lter on the hot side is clogged.


2. Check the particle fi lter.

3. Clean the particle fi lter if necessary.

Alarm (HP)

High press. switch

040622 16:08:15

Info Ackn.

Note

Increase the speed of the heat carrier pump:

Use a screwdriver or a coin to increase the speed of the heat carrier pump.

Turn one step anti-clockwise.

Electric cassette (EK)

Possible cause 1: The electric cassette’s miniature circuit-breaker has tripped.


2. Reset the miniature circuit breaker button on the heat pump (circuit breaker 3) by pushing up the toggle switch.

3. Contact your dealer if the miniature circuit breaker trips again.

Possible cause 2: The electric cassette’s overheat protection has tripped.


2. Reset the overheat protector (circuit breaker 4) by pressing in the button on the electric cassette’s protective casing. The circuit breaker is reset when you hear a clicking sound.

3. Check that the particle fi lter on the hot side is clean.

Alarm (EK)

Electrical cassette

(EE) 040622 16:08:15

Info Ackn.

Note

The miniature circuit-breaker button for the electric cassette can be found under the heading Fuses and reset but- tons on the heat pump .

The most frequent cause for the overheat protection tripping is a poor fl ow over the heat pump, which can be due to air in the heat pump or that the particle fi lter is clogged.

34


Power failure (3-phase)

The heat pump maintains all its settings in case of a power failure. When the power returns the heat pump automatically starts up according to the previous settings.

Possible cause: One or two phases to the heat pump are down.

Action: 1. Check that the fuses in the house’s distribution box have not blown.

2. Change the fuse if necessary. If you have miniature circuit-breakers and these have tripped you reset them by pushing up the toggle switch.

3. The heat pump automatically returns to the operating mode once the fault has been rectifi ed.

Alarm

Power failure

040622 16:08:15

Info Ackn.

3-phase incorrect (3-phase)

Possible cause 1: One or two phases to the heat pump are down.

Action: 1. Check that the fuses in the house’s distribution box have not blown.

2. Change the fuse if necessary. If you have miniature circuit-breakers and these have tripped you reset them by pushing up the toggle switch.

3. The heat pump automatically returns to the operating mode once the fault has been rectifi ed.

Possible cause 2: Phase sequence to the heat pump is incorrect.

(The alarm may only be rectifi ed by an electrician.)


2. Switch the phase sequence on the incoming supply.

The heat pump starts automatically once the phase sequence has been switched.

Alarm

3-phase incorrect

040622 16:08:15

Info Ackn.

Note

If the power does not return on all phases at the same time during external electrical work, there is a risk that the Rego control unit gives a false alarm for a phase sequence error.

High Heat transfer fl uid delta T8/T9 (GT8/GT9)

The heat pump gives an alarm when the temperature difference between the sensors T8 (GT8) and T9 (GT9) is too high.


Action: 1. Check that the heat carrier pump has not jammed.



Action: 1. Clean the particle fi lter.

Alarm GT8/GT9

High HTF delta

040622 16:08:15

Info Ackn.

35


High return to the heat pump T9 (GT9)

There is a sensor T9 (GT9) in the heat pump, which for reasons of safety, stops the compressor if the temperature of the return water from the radiators becomes too high. The limit lies at approximately 58ºC.

Possible cause 1: The temperature setting is too high.

Action: 1. Lower the temperature setting (Temp. +/-).

Possible cause 2: The valves on the radiators or fl oor heating

Action: system are closed.

1. Open all valves.

2. Press the Ackn. button.

Possible cause 3: The hot water temperature is set too high.

Action: 1. An alarm is given accord. to clockot water mode.

Contact the installer to adjust the hot water temperature.

Possible cause 4: The fl ow across the heat pump is greater than the fl ow in the heating system.

(Only applies if a bypass is fi tted.)

Action: 1. Reduce the speed of the heat carrier pump or increase the speed of the main pump in the heating system.

2. Contact your dealer.

Alarm (GT9)

High return HP

040622 16:08:15

Info Ackn.

Note

The heat pump starts automatically when the temperature drops.

Lower the speed of the heat carrier pump:

Use a screwdriver or a coin to lower the speed of the heat carrier pump. Turn one step clockwise. The lowest speed should be avoided.

Heat transfer fl uid out max T8 (GT8)

There is a sensor T8 (GT8) in the heat pump, which for reasons of safety, stops the compressor if the temperature of the water going out to the radiators becomes too high.


Action: 1. Check that the heat carrier pump has not jammed.



Action: 1. Clean the particle fi lter.

Alarm (GT8)

Heat tran. f out max

040622 16:08:15

Info Ackn.

Note

The heat pump starts automatically when the alarm is reset and the water temperature has dropped to its normal value.

36


Sensor fault

All sensors connected to the heat pump can give an alarm when defective. In the example to the right it is sensor T1 (GT1), Return radiator, which has given an alarm. All sensors give alarms in the same way. Read more about the sensors under heading Read the temperatures on the heat pump.


Action: 1. Wait and see.

Possible cause 2: Short circuit or broken sensor cable.

Action: 1. If you have an ohmmeter you can disconnect the sensor and check the cable’s resistance. Compare with the sensor table in the section Technical information.

Otherwise contact your dealer.

Possible cause 3: Defective sensor or incorrect connection.


Alarm (GT1)

Sensor return rad.

040622 16:08:15

Info Ackn.

Note

Switch off the power before checking the resistance of the cable.

Note

The factory settings are 0°C and -2°C respectively. If anti-freeze liquid is used these values need to be changed.

Contact your installer

HTF in under limit T10 (GT10) and HTF out under limit T11 (GT11)

Possible cause 1: Temporar y low heat transfer fl uid temperature.

Action: 1. Wait and see.

2. If the alarm returns, contact your dealer.

Possible cause 2: Too low fl ow on the cold side.

Action: 1. Check the particle fi lter.

2. Clean the fi lter if it is clogged.

Possible cause 3: The minimum heat transfer fl uid temperature has

Action: been set too low.

1. Wait and see.

2. If the alarm returns, contact your dealer.

Alarm (GT10)

Pump inlet too cold

040622 16:08:15

Info Ackn.

Alarm (GT11)

Pump outlet too cold

040622 16:08:15

Info Ackn.

In a groundwater system the cause may also be:

Possible cause 4: Clogged fi lter in the groundwater circuit.

Action: 1. Clean the fi lter.

Possible cause 5: The motor cut-out or a fuse on the pump in the groundwater system has tripped.

Action: 1. Reset the motor cut-out or fuse.

Possible cause 6: Faulty pump in the groundwater circuit.


37


Anode error


Action: 1. When large amounts of hot water are used (e.g. with a bath) the alarm may be given without there being a fault. Contact your dealer at repeated alarms. If the fault occurs at the weekend, you can wait to the next working day before contacting your dealer.

Possible cause 2: Faulty electric anode.


Alarm

Anode error

040622 16:08:15

Return Info

38

For the Installer

Installation of the heat pump should be performed by a qualifi ed installer.

The For the Installer chapter includes a section suggesting how the heat pump installer should install and commission the heat pump. The installation consists of a plumbing section and an electrical section. These provide technical data such as measurements, wiring diagrams and installer menus.

Contents:

Important information to the installer

Checklist

What the shipment includes

Dimensions and plumbing connections

The heat pump and collector hose in general

Preparations before connection

Connecting the heat pump to the heating system

Connecting the heat pump to the power supply

External connections to the heat pump

Commissioning the heat pump

Hot water cylinder for Heat Pump

Note

It is important that as the installer you also read through the For the User section of the manual. Here you will fi nd the information necessary to get a comprehensive understanding of the heat pump.

39

Important information to the installer / Checklist

Important information to the installer

This manual provides you with all the information necessary to install the heat pump. The manual is divided into several sections. The order of these is based on the recommended installation sequence. Use the supplied checklist during installation.

Before installation remember:

Warning


Installation of the heat pump should be performed by a qualifi ed installer.

If the heat pump needs to be taken downstairs it may be temporarily tilted with the compressor downwards. However, never lay the heat pump down or transport it horizontally.

Before the heat pump is commissioned, the heat transfer systems, the hot water cylinder and the heat pump must be fi lled and vented.

Check that pipe connections on the cold and hot sides are intact and have not shaken loose during transport.

The HTF pump should be running when the heat transfer system is vented.

The control unit measures the phase sequence and gives an alarm if the power supply has been connected incorrectly.

Wiring should be kept as short as possible to protect the system from downtime, for example during a thunderstorm.

Heat pump installation, energy drilling and collector installation must be carried out in accordance with applicable regulations.

Checklist

Each heat pump installation is unique. However, the following checklist will give you a general description of how the installation should be carried out.

1. Place the heat pump on a fl at surface. Adjust the height using the rubber feet.

2. Check that the bore hole for the collector hose has been bored according to applicable regulations (responsibility of the drilling company).

3. Fit the incoming and outgoing pipes for the heating and heat transfer fl uid circuits as well as the expansion tank.

4. Fit the particle fi lters and valves.

5. Make the connections for any external additional heat.

6. Connect the pump to the heating system (plumbing). Follow the instructions for the pump in question.

7. Install the outdoor sensor and a room sensor if used.

8. Fill and vent the heating and heat transfer systems before commissioning.

9. Connect the heat pump to the electrical system. Use the appropriate electrical diagram.

10. Connect the external switch as well as additional heat if used, and an earth-fault breaker.

11. Connect a general alarm, external controls and load monitor if used.

12. Commission the heat pump by making all the necessary settings on the control panel.

13. Check the heat pump after commissioning. Top up the heat transfer fl uid if required.

40



The following components are included in the delivery of the heat pump:

Rubber feet

Quantity: 4

Particle fi lter with screen

Quantity: 2 (LWM model)

Quantity: 1 (LW model)

Outdoor sensor T2 (GT2) with cable

Quantity: 1

Circlip pliers

Quantity: 1

Room sensor T5 (GT5):

Quantity: 1

Drain plug

Quantity: 1

Return sensor T1 (GT1)

Quantity: 1

Cable: 4 m

Manual

Quantity: 1

Safety valve

Quantity: 1

41

Dimensions and connections

Dimensions and plumbing connections

The following illustrations show the dimensions of the heat pump and plumbing connections. All measurements are stated in millimetres.

LWM model

596

356 471 538 79 240

569

506

1

5

6

517

471

LW model

1800

229

165

69

105

2

4

3

Electrical connections

345

218

183

123

1 Return radiator

2 Flow radiator

3 Cold water in

4 Hot water out

5 HTF (coll) in

6 HTF (coll) out

310

398 464 554

596

365 455 505

569

5

1520 1

2

Electrical connections

3

6

4

482

447

387

321

266

211

1 Return radiator

2 Flow radiator

3 Return HWH

4 Riser HWH

5 HTF (coll) in

6 HTF (coll) in

42



Transporting the heat pump

The heat pump should always be transported and stored in an upright position. Otherwise the suspension fi ttings inside the compressor can be damaged. If the heat pump must be tilted during entry to the installation site, this should be done for as short a time as possible. The outer cover plates should be removed to avoid damage, if the heat pump is moved without using the supplied pallet.

The heat pump must not be stored at temperatures below -10ºC.

Positioning the heat pump

It is important that the heat pump stands on a fl at surface as it contains sensitive parts. Adjust the rubber feet so the heat pump does not lean.

The temperature surrounding the heat pump must be between 0ºC and 35ºC.

The installer should take sound propagation into consideration when positioning the heat pump.

Make sure there is a fl oor drain in the room where the heat pump is installed. The fl oor drain ensures any water is easily transported away if leakage should occur.

Maximum working temperatures

The heat pump can work at a maximum return water temperature of approximately 57ºC. If the temperature rises above this value the heat pump will stop for reasons of safety.

The maximum outgoing temperature to the heating system is around 65°C. However, even higher temperature can be attained with the help of the electric cassette.

Minimum working temperatures

The heat pump is from factory preset to minimum temperature of heat transfer fl uid (collector) ±0°C inlet and -2°C outlet.

If anti-freeze liquid with a freezing point of -15°C is used, the heat pump can operate at outdoor temperatures down to -5°C.

The preset values must be changed during commissioning. At this level the heating factor is (depending on model) appr.

3.3 - 3.5 at 35°C heat transfer fl uid out and 2.4 - 2.6 at 50°C heat transfer fl uid out.

Fit the particle fi lter

The task of the particle fi lter is to fi lter out dirt before it can enter the heat pump. Accordingly, the supplied particle fi lters should always be fi tted on the incoming pipes on both the hot and cold sides. The fi lters should be fi tted as close to the heat pump as possible and placed horizontally.

Two particle fi lters are supplied with the LWM model. These are to be fi tted on the outside of the heat pump. On the LW model the particle fi lter for the hot side is already fi tted inside the heat pump. The supplied fi lter is to be fi tted on the cold side, outside of the heat pump.

43


Collector hose

The task of the collector hose is to convey the heat transfer fl uid through the ground or lake to fetch a few degrees of heat. The hose consists of a thin-walled plastic hose of the type PEM 40 x 2.4 PN 6.3.

It is important when the collector hose is placed in the ground that air pockets are avoided.

Installation and refi lling around the collector hose

Installation and fi lling the soil around the collector hose should follow applicable material and working descriptions and regulations.

It is important that the fi lling material does not contain stones or other sharp objects that can damage the collector hose. We also recommend that the hose is pressure tested before starting to refi ll. If the hose should leak it is easier to fi x the problem.

When cutting the collector hose it is important that no dirt or gravel enters the system. Dirt and gravel can cause a blockage in the heat pump.

Minimum permitted bending diameter

Minimum permitted bending diameter is 1 metre. If sharper bends are required an elbow connector must be used. If the collector hose is damaged by too sharp a bend, you can repair the damage using a straight coupling.

Maximum length of the collector hose

The maximum length of the collector hose is based on the heat transfer fl uid pressure setting. We recommend a heat transfer fl uid consisting of max 29 per cent ethanol by volume and water. Ethanol has good environmental and technical properties even at low temperatures and should therefore be used instead of other heat transfer fl uids.

Note

The depth and length of the collector hose are described in detail in the confi guration program VPW2100.

Heat pump model

EHP 7 LW/M

EHP 9 LW/M

EHP 11 LW/M

EHP 14 LW

EHP 17 LW

Maximum length of collector hose with a single circuit (m)

PEM 40x2.4 PN 6.3.

500

400

400

-

-

Collector hose with 2 circuits in parallel: Maximum length per circuit (m)

PEM 40x2.4 PN 6.3.

1000

800

800

800

800

Note

The maximum collector hose lengths for heat pump models are provided in the table.

In situations where the length of the collector hose needs to exceed the permitted value, you can connect the hoses in parallel. As an example the table shows that for WPS 110 the maximum hose length is 400 metres.

For two hoses connected in parallel the maximum length is 800 metres per hose, i.e. in total 1600 metres with a parallel connection.

44


Outline drawings for the collector hose in the ground and through a wall

The drawings below show how to run the collector hose in the ground and through a wall. The soil fi lling around the hose must not contain stones. If the hose is ploughed down, you must use equipment that guarantees the hose is laid at the right depth.

Collector in the ground

200 mm

C/C 800-1000 mm

C/C 800-1000 mm

Example of the collector through the wall

(from the side)

House wall

Soil or rock collector

Insulation from the wall

Filling of stone free soil approximately

100 mm around the collector hose.

Collector, PEM 40 x 2.4 PN 6.3.

Example of the collector through the wall

(cross section)

Connecting the collector hose to the heat pump

It is important that the collector hose has been pressure tested before it is connected to the heat pump. Pressure testing is carried out by the boring company or excavating company and determines whether the hose is in one piece and works as it should. A ground collector is usually pressurised during the laying process.

A further leakage test must be performed on the collector hose before commissioning the heat pump.

Note

Non-infl ammable pipe material must be used when routing the pipes indoors. When plastic hose is used indoors this must be protected by 40 mm fi re resistant, mineral wool sheet,

EI30.

45


You can connect the collector hose to the heat pump with one or more circuits. In a multi-circuit solution, the collector hoses are connected in parallel as illustrated below. The parallel hoses are connected to two distributors. Each coil should have a shutoff valve and a control valve. The control valve is adjusted so that the fl ow rate is the same in the coils.

After the distributor and the valves, the coils are connected to a collecting pipe. A fi lling unit, particle fi lter and an expansion tank are connected to the collecting pipe. A safety valve is connected to the outgoing pipe. The safety valve leads off any overpressure.

One circuit at a time is fi lled with heat transfer fl uid. Keep the valves closed in the other loops during the process. Read more about fi lling under the headings Connecting the heat pump to the heating system /Filling water in the heating system and Filling the heat transfer fl uid in the collector hose.

Expansion tank

Filter

Filling unit

Ground, lake or rock collector

Heat pump

Single circuit solution

Expansion tank

Filling unit

Filter

Control valve

Distributor

Ground, lake or rock collector

Heat pump

Multi-circuit solution

46



In some situations the heat pump may need extra preparations before it is commissioned. Such preparations may be:

Moving the heat transfer fl uid pipe for side entry

Supplement the heat pump with a ground water system

Moving the heat transfer fl uid pipe for side entry

When the heat pump is supplied the heat transfer fl uid side is assembled for a top installation. This means the pipes for heat transfer fl uid in and heat transfer fl uid out run through the top of the heat pump.

If the heat pump is positioned in the house so it is diffi cult to install the heat transfer fl uid pipes on the heat pump from above, they can be fi tted from the side (side installation). Both the right- and left-hand sides are prepared for side installation. The following pages describe side installation.

Side installation should be done before the heat pump is positioned in its fi nal installation location.

The heat transfer fl uid pipes are fi tted for top installation when the heat pump is delivered.

47


Side installation on the right-hand side

Proceed as follows to switch the heat transfer fl uid pipes from top installation to side installation on the right:

1. Remove the blanking washers (fi gure 1).

2. Dismantle the sensor and both heat transfer fl uid pipes. The pipes run to the top of the top plate. Heat transfer fl uid in is connected by a connector on top of the HTF pump. Heat transfer fl uid out is connected to the bottom of the heat exchanger (fi gure 2).

Note:The sensor fi tted to heat transfer fl uid out must be dis mantled fi rst (fi gure 2).

3. Remove the Armafl ex insulation from the heat transfer fl uid pipes so they are completely clean (fi gure 3).

4. Cut the heat transfer fl uid pipes so they are suitable for righthand side installation (fi gures 4 and 5). Follow the measurements given in fi gures 6 and 7.

5. Solder on a solder elbow and a straight piece of copper tube.

You can use the piece left over from cutting the heat transfer fl uid out pipe as the straight piece.

Note: Do not use compression ring couplings to secure the solder elbow on the copper pipe. Compression ring couplings require more space and space is limited in the heat pump.

6. Refi t the heat transfer fl uid pipes on the heat pump. See the result in fi gure 8.

7. Assemble the sensor on the heat transfer fl uid in pipe. Use aluminium tape and cable ties.

8. Slide on Armafl ex insulation on both pipes and secure using Armafl ex tape. Make sure you cover both pipes well, otherwise there is a risk of condensation.

Figure 1

Figure 2

Figure 3

HTF (coll) out

Sensor

HTF (coll) in

Figure 4 Heat transfer fl uid in

Figure 5 Heat transfer fl uid out

Figure 6

160 mm

Figure 7

Solder elbow

225 mm

Straight piece

140 mm

Figure 8

48


Side installation on the left-hand side

Proceed as follows to switch the heat transfer fl uid pipes from top installation to side installation on the left:

1. Switch the heat pump’s right- and left-hand side covers.

2. Remove the blanking washers (fi gure 1).

3. Dismantle the sensor and both heat transfer fl uid pipes. The pipes run to the top of the top plate. Heat transfer fl uid in is connected by a connector on top of the HTF pump. Heat transfer fl uid out is connected to the bottom of the heat exchanger (fi gure 2).

Note:The sensor fi tted to heat transfer fl uid out must be dis mantled fi rst (fi gure 2).

4. Remove the Armafl ex insulation from the heat transfer fl uid pipes so they are completely clean (fi gure 3).

5. Cut the heat transfer fl uid in as in fi gure 4. Follow the measurements in fi gure 6. Solder on a solder elbow and a piece of straight copper tube. Use the material left over from cutting.

6. Cut the heat transfer fl uid out as in fi gure 5. Follow the measurements in fi gure 7. Solder on a solder elbow and a piece of straight copper tube. Use the material left over from cutting.

Note: Do not use compression ring couplings to secure the solder elbow on the copper pipe. Compression ring couplings require more space and space is limited in the heat pump.

Figure 1

Figure 2

Figure 3

HTF (coll) out

Sensor

HTF (coll) in

Figure 4 Heat transfer fl uid in Figure 5 Heat transfer fl uid out

7. Refi t the heat transfer fl uid pipes on the heat pump. See the result in fi gures 8 and 9.

8. Assemble the sensor on the heat transfer fl uid in pipe. Use aluminium tape and cable ties.

Straight piece Solder joint

530 mm

Figure 6

9. Slide on Armafl ex insulation on both pipes and secure using Armafl ex tape. Make sure you cover both pipes well, otherwise there is a risk of condensation.

Straight piece

Solder elbow

Figure 7

560 mm

225 mm

Figure 8 View from the left Figure 9 View from the right

49


Supplementing the heat pump with a groundwater system

If the heat pump is installed for groundwater instead of rock, soil or lake, it must be supplemented with an intermediate heat exchanger. The intermediate heat exchanger protects the heat pump from contamination, clogging and freezing.

A groundwater pump with non-return valve is installed at the bottom of the bore hole. The pump is used to pump the groundwater from the water source to the intermediate heat exchanger. Heat is transferred to the heat transfer fl uid in the intermediate heat exchanger. The water is then pumped to a recharge well. The intermediate exchanger is installed in the boiler room or the like.

A fi lter has to be used in the water circuit. A similar fi lter type as in the brine circuit is recommended. A large fi lter is preferable if there is a risk for much contamination.

The circuit to the heat pump is installed in the same way as described earlier i.e. with fi lling unit, expansion tank and safety valve. The circuit should also be protected against freezing down to -15ºC.

Note

The intermediate heat exchange should be connected against the fl ow.

In addition, the pipe from the groundwater well is connected to the bottom of the intermediate heat exchanger so that the fl ow goes upwards.

To the heating system

Filling unit Exp.

Intermediate heat exchanger

Filter

Safety valve

Groundwater Recharge well

50


Connection to groundwater system: electrical connection

1. Connect the ground water pump to the mains via a motor cut-out and a contactor. The control to the contactor (CK3) uses 230 V, which is taken from the terminals L and N (P3) in the heat pump.

2. Connect the auxiliary contact for the motor cut-out MB3 in series with the alarm input MB2. This method starts and stops the groundwater pump with the heat pump’s HTF pump. If the motor cut-out MB3 trips, the heat pump stops and the alarm for the HTF pump is displayed on the menu display.

Warning

If a single phase pump is used, it should always be connected with a contactor. It must never be connected to the P3 output on the heat pump as this can damage the control unit.

Motor cut-out

Contactor

Terminal card in the heat pump

Groundwater pump

G8 (P8)

Alarm input

Note

There is a built-in motor cut-out in the pump on the 11-17 kW models.

Models 6-9 kW have a strap fi tted between L and MB2 on the terminal card.

HTF pump G3 (P3)


It is important that all previously mentioned preparations have been carried out before the heat pump is connected to the heating system. Also ensure the pipe system has been well fl ushed before it is connected to the heat pump. Flushing protects the heat pump from contamination.

The heating system must be diffusion-proof. Oxygen must not enter the system.

The heat pump is only intended to work in oxygen free systems with so-called

“dead water”. When oxygen enters the system this causes corrosion in the heat pump and clogging of the fi lter on the heating system side. An intermediate heat exchanger is necessary in systems with oxygen penetration/diffusion to protect the heat pump.

Note

Only qualifi ed installers may carry out the installation. The installer should observe applicable regulations and recommendations from the supplier.

51


Connecting to the heating system without a bypass:

The heat pump can be connected to the heating system without a bypass, as the circulation in the heat pump and the heating system is managed by the integrated pump G2 (P2). This also means the main pump G1 (P1) is omitted. An absolute prerequisite for this type of connection is that a minimum fl ow of at least 70% of the nominal fl ow (see the table below) can be maintained throughout the year. The thermostat valves in the heating system should be fully open and in a fl oor heating system, it is necessary for at least half of the coils to be fully open.

The control unit gives an alarm when the temperature increase exceeds 13ºC in the heating system. If the heating system is designed so that a minimum fl ow cannot be guaranteed, the heat pump should be connected using a bypass and an external main pump G1 (P1).

Hot water function:

Hot water charging is started by the hot water sensor T3 (GT3), and is stopped by the return sensor T9 (GT9).

Heat carrier pump

The circulation pump G2 (P2) is a Wilo Star 25/6-130 accord. to clockeat pumps from 6 to 11 kW.

The circulation pump G2 (P2) is a Wilo TOP-S 25/7.5 EM accord. to clockeat pumps from 14 to 17 kW.

Flow (Q)

Maximum external pressure drop in the heating system

The maximum external pressure drop and the minimum fl ow that the integrated circulation pump can handle is presented in the table. If the minimum fl ow cannot be guaranteed a bypass and an external main pump G1 (P1) should be installed.

Heat pump model

EHP 7 LW/M

EHP 9 LW/M

EHP 11 LW/M

EHP 14 LW

EHP 17 LW

Nominal fl ow

0.25 l/s

0.31 l/s

0.38 l/s

0.50 l/s

0.57 l/s

Minimum fl ow

0.18 l/s

0.22 l/s

0.26 l/s

0.35 l/s

0.40 l/s

Max external pressure drop

36.0 kPa

34.0 kPa

32.0 kPa

54.0 kPa

51.0 kPa

52


Connect heat pump LWM model to the heating system

Application: The principle is based on fl oating condensing in the heat pump (curve control) and additional heat from an electric cassette. The built-in control unit controls the heat pump using the outdoor sensor T2 (GT2) and the return sensor

T1 (GT1) according to the outdoor compensated control curve. When the heat pump is unable to meet the heating requirements, the electric cassette starts automatically and together with the heat pump provides the required temperature. The heating of hot water is given priority over the heating of the heating water. Hot water heating is controlled by the sensor T3

(GT3), which is located in the hot water cylinder. When the water in the cylinder reaches the required temperature, heat is once more supplied to the heating system.

Connecting the sensors: External sensors T1 (GT1) and T2 (GT2) must always be connected. The sensor T5 (GT5) is connected when the heat pump is to be infl uenced by a room sensor.

An absolute prerequisite for this type of connection is that a minimum fl ow of at least 70% of the nominal fl ow can be maintained throughout the year.

Heating system valve valve

G2 (P2): Heat carrier pump

G3 (P3): Heat transfer fl uid pump

V21:

V31:

Filter Heating system

Filter Heat transfer fl uid in

Symbols according to ISO/FDIS 14617.

Letter codes according to IEC 61346-2.

This is a principal drawing.

53


Connect heat pump LW model to the heating system

Application: The principle is based on fl oating condensing in the heat pump (curve control) and additional heat from an electric cassette. The built-in control unit controls the heat pump using the outdoor sensor T2 (GT2) and the return sensor

T1 (GT1) according to the outdoor compensated control curve. When the heat pump is unable to meet the heating requirements, the electric cassette starts automatically and together with the heat pump provides the required temperature. The heating of hot water is given priority over the heating of the heating water. Hot water heating is controlled by the sensor T3

(GT3), which is located in the hot water cylinder. When the water in the cylinder reaches the required temperature, heat is once more supplied to the heating system.

Connecting the sensors: External sensors T1 (GT1) and T2 (GT2) must always be connected. The sensor T5 (GT5) is connected when the heat pump is to be infl uenced by a room sensor.

An absolute prerequisite for this type of connection is that a minimum fl ow of at least 70% of the nominal fl ow can be maintained throughout the year.

Heating system

E42: Hot water heater valve


G3 (P3): Heat transfer fl uid pump

V21: Filter Heating system

V31: Filter Heat transfer fl uid in




54


LWM model: individual temperature control in each room, increasing volume of internal water and bypass

This solution is viable if you want to control the temperature of each room, for example if you use thermostat valves on the radiators in each room. The function of the heat pump is to maintain a temperature in accordance with the heat curve

(depending on outdoor temperature) in the accumulator. The heating water is then distributed from the accumulator to the heating system. This solution also allows the overall volume of the installation to be increased if the volume of the heating system is inadequate, for example with one or two fan-assisted radiators.

*

* Mixed heating system

There is a possibility to control a second heating system with a mixing valve. This is recommended when a combination of radiators and a fl oor heating system is used.

E22 : water heater with electric cassette

E42: tank with outer shell valve

G1 (P1): Radiator pump


G4 (P4): Pump for mixed heating system valve


W40: Cold water »




55


LW model: individual temperature control in each room, increasing volume of internal water and bypass

This solution is viable if you want to control the temperature of each room, for example if you use thermostat valves on the radiators in each room. The function of the heat pump is to maintain a temperature in accordance with the heat curve

(depending on outdoor temperature) in the accumulator. The heating water is then distributed from the accumulator to the heating system. This solution also allows the overall volume of the installation to be increased if the volume of the heating system is inadequate, for example with one or two fan-assisted radiators.

* Mixed heating system

There is a possibility to control a second heating system with a mixing valve. This is recommended when a combination of radiators and a fl oor heating system is used.

*

56 tank


E42: tank with outer shell

G1 (P1): radiator pump

G2 (P2): heat carrier pump

G4 (P4): Pump for mixed heating system

V21: fi lter heating system

W40: cold water »


LWM model: Increasing volume of internal water without bypass

This solution increases the overall volume of the installation if the volume of the heating system is inadequate, for example with one or two fan-assisted radiators.

57


E42: tank with outer shell valve



V40: Hot

W40: Cold water »





LW model: Increasing volume of internal water without bypass

This solution increases the overall volume of the installation if the volume of the heating system is inadequate, for example with one or two fan-assisted radiators.

58 tank


E42: tank with outer shell

G2 (P2): heat carrier pump

V21: fi lter heating system water

W40: cold water »

Filling water in the heating system

This is what to do:

1. Open and close the tap between the cold water system and the heating system in short time intervals.

2. Read the pressure on the pressure gauge.

3. Vent the system and refi ll to the correct pressure.


Filling the heat transfer fl uid in the collector hose

The collector hose is fi lled with heat transfer fl uid to be able to collect heat from the ground. The fl uid is a mixture of water and anti-freeze. It should have a freezing point of approximately -15ºC.

Proceed as follows to fi ll the collector hose with heat transfer fl uid:

See the illustration on the next page.

1. Connect two hoses (1 inch in diameter) to both fi lling valves 1 and 2.

One of the hoses should have a submerged pump connected at the other end. Pump submersible with a minimum delivery pressure of 450 kPa. Minimum fl ow: 4 m³/h, type Wilo-Sub TWU 5-SE. The submerged pump should be fi tted with a particle fi lter.

2. Place the hose and submerged pump in a barrel that holds 100 litres.

3. Fill the barrel with heat transfer fl uid. The relation between water and heat transfer fl uid can be found in the tables 1 and 2. Fill the water before anti-freeze liquid. Before starting up the pump, mix the antifreeze liquid in the tank to ensure a uniform mix.

4. Open valves 1 and 2 and close valve 3.

Repeat points 5-8 for each circuit. The other circuits must be closed.

5. Start the submerged pump. The circuit is automatically fi lled with heat transfer fl uid.

6. When the fl uid level has dropped to 50 per cent in the barrel, stop the submerged pump and fi ll the barrel with more anti-freeze mixture.

Note

The fi rst litres from the return pipe are often contaminated. Therefore collect these litres in a separate tank.

59


7. When the system is full and air no longer comes from the return pipe run the system for at least a further 30 minutes. You can also start the heat transfer fl uid pump to speed up the air venting. Enter manual operation under menu 5.3 and start the pump G3 (P3). See Commis- sioning the heat pump/Testing the heat pump manually .

8. When venting is complete open valve 3, shut valve 2, and shortly after shut also valve 1. Disconnect the hoses and the heat transfer fl uid side is ready for operation.

Note

It is an advantage if an overpressure is created in the heat transfer fl uid circuit. An underpressure damages the expansion tank and the collector hose.

Safety valve

Expansion tank

Manual venting valve

2

3

1

Particle fi lter

60


Table 1: Mixing ratio in litres/metre

40/35Hose type: 40/35 40/35Hose type: 32/28

Anti-freeze type Water (l) Anti-freeze

(l)

0,29

Water (l)

Bioethanol 0,71 0,42

Propylene/ ethylene glycol

0,65 0,35 0,39

Example:

A 200 metres of hose type 40/35 with anti-freeze gives

200 x 0.29 litres anti-freeze/ metre = 58 litres of anti-freeze and

200 x 0.71 litres of water/ metre = 142 litres of water.

Anti-freeze

(l)

0,18

0,21

Hose type: 20/17

Water (l) Anti-freeze (l)

0,16

0,15

0,07

0,08

Table 2: Mixing ratio in per cent by weight

Bioethanol / Water

25 % / 75 %

Propylene/ethylene glycol / Water

35 % / 65 %

61



Make sure the electricity has been switched off before connecting the heat pump to the mains. Check that cables and printed circuit cards are intact.

High and low current cables should be routed separately in order to avoid interference on the sensors.Wiring diagram is supplied with the heat pump.

A description of external connections is given in this section.

Examples of external connections include room and outdoor sensors and mixing valves.

The electric connection as well as the material used to make this connection must comply with existing standards and in particular standard NF

C15-100.

The heat pump electrical supply must be protected with a D curve earth leakage circuit breaker. Wiring must be of the H07RNF type. Supply must be of the P+N+T type 230 V single-phase and 3P+N+T 400 V three phase.

Warning

The electrical installation may only be performed by a qualifi ed electrician.


62


External connections to the heat pump

These are the external connections that must be made for the heat pump:

Power supply 3-phase: The power supply is connected to terminals L1, L2, L3, N and PE. In the event of a possible phase sequence fault the heat pump will trip the alarm 3-phase incorrect.

See more information in the section What to do if a fault occurs.

Power supply 1-phase: The power supply is connected to terminals L, N, and PE.

Mixing valve on the heating circuit: If a second heat curve with a mixing valve is to be used, the mixing valve is connected to terminal block SV1.

External main pump in the heating system G1 (P1): The external main pump must be connected to the terminal card in those cases a bypass is required. The pump is connected to terminal P1.

Return sensor radiator T1 (GT1): Must always be connected. Connect to terminal GT1.

Outdoor sensor T2 (GT2): Must always be connected. Connect to terminal GT2.

Hot water sensor T3 (GT3): Is connected if the heat pump is to produce hot water. Connect to terminal block GT3 X on the terminal card. On the LW model this sensor is already connected on delivery.

Mixing valve sensor T4 (GT4): Is connected when a mixing valve for a second heat curve is to be used. Connect to terminal GT4.

Room sensor T5 (GT5): Is connected if room sensor infl uence is required.

Terminal card for external connections

Alarm lamp, room sensor

Terminal card

230 V

63


Connecting the general alarm, external input and load monitor

General alarm

The general alarm is activated irrespective of which alarm has tripped.

When a general alarm is required on the heat pump, it is connected according to the diagram opposite. The contact for the general alarm output is potential free (no current) and it closes at a general alarm.

Connect max 24 V and 100 mA on the contact.

External input

The heat pump includes prepared functions to permit the heating to be controlled externally, for example, from a telephone. The input to the heat pump can be programmed for different functions on the control unit. These functions are available from menu 1.13 (Remote control temperature) and menu 5.7 (Select external controls).

The input must be short circuited to activate the function. Note that the contact must be potential free.

Load monitor

The load monitor has the task of disconnecting the additional heat in the event of a too high load on the house’s main fuse. Connect the load monitor to the external output according to the heading External input above.

Select function 3 in the menu display 5.7 (Select external controls). When the external input has been short circuited the additional heat is disconnected. The heat pump is not affected.

Note: It is not possible to utilise the other functions in menus 1.13 and 5.7 if you connect a load monitor.



64


Installer and service menu (I/S)

As the installer you have your own section of menus for settings, e.g. for commissioning. These are accessed from the control panel by holding down the menu button for approximately ten seconds.

The menu displays are divided into lines and each display has a number to make it easy to fi nd. If there is no activity for 30 minutes the menu display automatically returns to Customer level 1.

The Installer level also includes Customer levels 1 and 2.

How to use the control panel

Here follows an example of how to use the control panel. The example shows how you move to menu display 5.13 and confi rm the external sensors. You will also fi nd more information about the control panel under the heading Control Panel in the

User section.

1. Press the menu button for approximately ten seconds until Access = SERVICE is shown on the menu display. Now press the Menu button.

Warning

The Installer and service menu (I/S) is only for installers. Under no circumstances may the user access this level.

Reg 637 I/S

040622 16:08:15 Tu

temp. Info Menu

2. The menu display Indoor temperature settings (menu 1) is shown.

3. Turn the menu dial clockwise (to the right) until you access the menu

Commiss./Service for installer (menu 5). Now press the Select button.

4. Turn the menu dial clockwise until you reach the menu Connected extra sensor in op.

(menu 5.13). Now press the Select button.

5. The menu display Extra sensor(s) is shown. Confi rm the extra sensors that you have connected by pressing the Confi rm button.

text is briefl y shown in the menu display. This means your setting is being registered in the heat pump.

Main menu


Return Select

(10 sec)

Main menu

Commiss./Service for installers 5

Return Select

Commiss./Service

Connected extra sensor in op 5.13

Return Select

Extra sensor(s)

GT4 GT5

Return Confi rm

Extra sensor(s)

Confi rming…

7. When the setting has been registered the previous menu display is shown.

Press the Return button twice to return to the main menu.

Extra sensor(s)

GT4 GT5

Return Confi rm

65



The heat distribution and heat transfer fl uid circuits should be fi lled and fully vented before commissioning. Also check that there are no leaks.

As many radiators as possible should be fully open when connecting to an existing water system. When connecting to a fl oor heating system at least half of all the fl oor coils should be open. When connecting a fan-assisted radiator system the fans are started fi rst and then the taps on the fanassisted radiators are opened fully.

Start the heat pump

1. Connect mains to the heat pump and press the ON/OFF switch on the control panel.

3-phase heat pumps: The control unit automatically measures the phase sequence so the compressor does not operate in the wrong direction. If the phase sequence is wrong the alarm 3-phase incorrect will trip. Read more about the alarm under the heading What to do if a fault occurs.. Disconnect the mains power to the heat pump and switch the phases manually.

2. Activate the Installer/Service menu by pressing the Menu button until the text Access = SERVICE is shown on the menu display. adjust to maximum value. To avoid having to wait for the heat pump restart timer you can go to the menu Fast restart of heat pump (menu 5.6) and quickly restart the heat pump. If the heat pump does not start, press the Info button to see if a heating demand exists.

4. Check the sight glass inside the heat pump during start up. Bubbles may appear in the sight glass for a few minutes during start up. The bubbles should then stop. Bubbles present when the heat pump is running are a fault symptom. They are probably due to insuffi cient refrigerant. Read more about the fault symptom under the heading What to do if a fault occurs.

5. Make the necessary settings on the control panel. have been connected, you must confi rm these so the control unit knows they are installed. The displays presented by the sensors are only shown if the sensors have been confi rmed. b. Set the maximal output to be used by the electric cassette. Choose between 1/3, 2/3 and 3/3. It is important that the electrical installation is adapted to handle the maximum electrical output. On delivery the control unit is set to 2/3. For more information about this see section Technical information .

Note

Further important information on control unit can be found in the user section.

Therefore read the entire manual before commissioning is started.

Press the power switch ON/OFF

Reg 637 I/S

040622 16:08:15 Tu

temp. Info Menu


Fast restart of heat pump 5.6

Return Select

Check the sight glass



Return Select


Select conn capacity electrical cass. 5.2

Return Select

66


Menu displays you might need to adjust or check


Set the hysteresis for heat pump on/off switching on the return sensor T1 (GT1). A lower value gives a shorter range between start and stop. Less than 5ºC should be avoided.

Set the neutral zone for the mixing valve in a heating system with two heat curves.

In the neutral zone the mixing valve receives no signal to open or close. Only applies when the sensor T4 (GT4) is connected.

Set the maximum temperature in the mixing valve circuit. You can, for example, set a maximum temperature for the fl oor heating system. On delivery of the heat pump the value is 60ºC. Only applies when the sensor T4 (GT4) is connected.

The heat pump is from factory preset to minimum temperature of heat transfer fl uid (collector) ±0°C inlet and -2°C outlet. If anti-freeze liquid with a freezing point of -15°C is used, the heat pump can operate at outdoor temperatures down to -5°C.

The preset values must be changed during commissioning. The settings in menus

9.4 and 9.5 must be changed to -7°C and -10°C respectively.

Hot water settings

Set the temperature in the hot water heater’s outer shell. Note that the setting does not apply to the temperature inside the hot water cylinder. The factory setting is

52ºC, but this temperature can be increased to max 55ºC if necessary. Only applies when the sensor T3 (GT3) is connected.

Set the hysteresis for the hot water temperature. The function measures below and above the value set in menu 2.3. Only applies when the sensor T3 (GT3) is connected. Less than 4ºC should be avoided.

Clock setting of additional heat

You can set the control unit so that the additional heat is fully blocked during certain periods of the day. Read more under the heading Extra functions (Customer level 2)/Timer control about how to set the control unit.

Commiss./Ser vice

Make a check of all the functions before you commission the heat pump. You can manually start and stop the pumps and valves from the menu Manual operation of all functions .

Set when the additional heat should be activated. On delivery the heat pump is set to activate the additional heat when necessary. Choose between Yes or No. If you choose No, the additional heat only engages during alarms, extra hot water and hot water peaks.

The function Fast restart means you do not have to wait for the normal restart time to start the heat pump. If there is a need for heating or hot water the heat pump starts within 20 seconds. The setting must be repeated each time you need to make a fast restart.

Single phase models:


Heat curve hysteresis 1.4

Return Select


Mixing valve curve

Neutral zone 1.8

Return Select


Mixing valve curve max at GT4 1.9

Return Select

Hot water

Setting of temperature.

Return Select

Hot water

Setting of

DHW hysteresis 2.4

Return Select

Clock setting

Add heat prog.time

accord. to clock 4.2

Return Select


Manual operation of all functions 5.3

Return Select


Select function add.heat yes/no 5.5

Return Select


Fast restart of heat pump 5.6

Return Select

67


Wait approximately 5 minutes after switching off the compressor before activating rapid restart of the heat pump, to allow the cooling circuit time to equalise pressure.

In the menu 5.7 you set whether the heat pump, additional heat and hot water charging should be controlled externally. When the external input on the control unit is short circuited you can make one of the following choices:

0 : No effect (factory setting).

1 : HP, additional heat and hot water stop.

2 : HP no effect, additional heat and hot water stop.

3 : HP and hot water no effect, additional heat stops.

4 : HP and additional heat no effect, hot water stops.


Select external controls 5.7

Return Select

Note

If any of the alternatives to the left are selected it is not possible to utilise any of the functions in the menu Remote control temperature (menu 1.13). See

Extra functions in the user section.

Select the language that you would like for the menu texts.


Selection of language menu 5.8

Return Select

The heat pump is set for continuous operation of the heat carrier pump on delivery.

In systems with a bypass, you can choose whether the heat carrier pump starts and stops with the compressor.

Choose whether the heat transfer fl uid pump shall run continuously, for example, when using *natural cooling. The heat transfer fl uid pump should in normal mode always start and stop with the compressor.

Select this menu to see the version number of the control unit.

Confi rm the extra sensors T3 (GT3), T4 (GT4) and T5 (GT5) that are connected externally. On confi rmation, the control unit stores information about the sensors to be used.


Select operation alt. for P2 5.10

Return Select


Select operation alt. for P3 5.11

Return Select


Display software version number 5.12

Return Select



Return Select

Timer readings

There are a number of different menu displays to help you check the status of the heat pump. The heat pump status is shown by the timer readings in menu 6.

Read the additional heat timer

The function shows the amount of time remaining before the additional heat is activated. If there is no countdown then there is no need of additional heat.

Timer readings read add. heat delay 6.2

Return Select

Read the start delay

* Natural cooling: In winter the heat pump takes heat from the bore hole in the rock and converts this to heat in the house. In the summer the cold in the same bore hole is used to give pleasant air conditioning.

68

The function shows the time remaining until the heat pump starts again after a previous stoppage. The heat pump will not start if there is no heating or hot water need.

Setting the additional heat

Additional heat timer

The function gives you the possibility to set the time that should elapse before the additional heat starts if the heat pump cannot produce suffi cient heat on its own. On delivery the heat pump is set to one hour.

Ramp time open

Here you set the time that you would like the electric cassette to go from

0 to 100%. In some cases the ramp time open, may need to be adjusted to eliminate overexciting the system.

Ramp time close

Here you set the time that you would like the electric cassette to go from

100 to 0%.

Show connected electric capacity

Check how much additional heat (per cent) has been enabled. See more information under the heading Technical information.

Return to factor y settings

If you regret your settings you can return to the factory settings in menu

12. If you are on Customer level 1 or 2 when you select Return to factory settings, only the settings in the displays accessible from Customer level

1 and 2 will be reset. If you are on the Installer/Service level when you select Return to factory settings only the displays accessible from Installer /

Service level are reset.


Timer readings read start delay 6.4

Return Select

Additional heat

Setting additional heat timer 8.1

Return Select

Mixed add. heat

Setting of ramp time open 8.3.4

Return Select

Mixed add. heat

Setting of ramp time close 8.3.5

Return Select

Additional heat

Show connected elec. capac. in op.

Return Select

Main menu


Return Select

69


Drying program for fl oor tile

When the heat pump has been installed in a newly built house with fl oor heating, the Drying of fl oor tile function can be used.

The function is designed to slowly heat up the fl oor tile during a set number of days. The temperature is then maintained for a set number of days, to fi nally allow the tile to cool slowly for a set number of days. The heat pump works during drying operations with the hysteresis set in the display P1.4.

It is also possible to operate drying program with only additional heat.

Here you set how many days you want the heating phase to last.

Note

During drying operations the heat pump does not produce any hot water and is not affected by timer controls.

Once the drying program has fi nished the heat pump returns to normal mode.

Here you set how many days you want the fl oor heating system to maintain the maximum drying temperature.

Here you set how many days you want the cooling phase to last.

Here you set the start and stop temperatures for the drying program.

Here you set the maximum temperature that the drying program should work at.

The function is activated and deactivated here. Drying program.

Temperature

Drying program

No of days for heating 5.14.1

Return Select

Drying program

No. of days for max temp 5.14.2

Return Select

Drying program

No. of days for temp + cold 5.14.3

Return Select

Drying program

Start/Stop temperature 5.14.4

Return Select

Drying program

Max temp. during drying 5.14.5

Return Select

Drying program

Active drying 5.14.6

Return Select

Note

When an extra shunt group is installed, it works according to the normal heat curve. The mixing valve must be opened manually when you want this circuit to be included in the drying program too.

Time

70


Manual test run of the heat pump

Instead of starting the heat pump directly in normal mode, you can manually test run the pumps and valves. This is recommended as in this mode you can easily fi nd any possible faults. In the menu display Manual operation of all functions (menu 5.3) you can run all functions manually. Press the Select button to start test operations. When you exit from the menu display the heat pump returns to normal mode.


Manual operation of all functions 5.3

Return Select

Start the heat pump with only additional heat

It might be necessary to run the heat pump before work on the heat transfer fl uid circuit is complete. You can then start the heat pump with only additional heat. You must have fi lled and vented the heating system to run the heat pump with only additional heat. Go to the menu display Select the function only add. heat (menu 5.4) and press the Select button. If the arrow points towards Normal operation press the Adjust button. Turn the menu dial until the arrow points towards Only add. heat. Now press the Save button. This function ensures that additional heat heats both the hot water and the heating water.

Important points to check after start up

In the fi rst period after commissioning particular attention should be paid to the pressure and levels in the heat distribution and heat transfer fl uid circuits. After a short period of operation it may be necessary to top up the heat transfer fl uid.

On delivery the motor cut-out setting is determined by a value produced during hot water charging and a stable voltage. The recommended motor cut-out setting may not always be suitable as the voltage in the mains can fl uctuate. The setting may therefore, from case to case, need to be adjusted. Adjust the setting using a clip-on ammeter when the heat pump is producing hot water.

For the heat pump to perform at its best, it is important to check the fl ow on the hot side of the heat pump. Usually, the heat carrier pump has a speed selector switch.

This must be set correctly for the pressure drop in the systems. A recommended temperature difference over the heat pump on the hot side is between 7-10 °C and on the cold side between 2-4 °C. You check this by going to menu display 3 and reading the sensors T8 (GT8) and T9 (GT9) as well as T10 (GT10) and T11 (GT11).

It is important in systems with a bypass that the fl ow in the heating system exceeds the fl ow over the heat pump. If this is not the case, the heat pump fl ow goes back via the bypass to the heat pump return, which may cause the heat pump to give an alarm for a high return temperature. The fl ow over the heating system should be so great that the entire radiator surface is kept warm. In this way the heat emitting surface increases and in doing so the fl ow temperature from the heat pump is kept down.

The heating system should be vented once again after test operations and then fi lled with cold water if necessary.


Select function only add. heat 5.4

Return Select

Note

Do not forget to return this function to normal mode.

71

Commissioning report

Client / Installation address:

Installer:

Type of equipment:

Commissioning date:

Type of heat (soil heat, rock heat, other...):

Total length of collector:

Other components of the installation:

Additional heat

Hot water heater type

Three-way valve

Serial number:

..............................................

Room sensor T5 (GT5)

..............................................

..............................................

Hot water heater temperature sensor T3

(GT3)

Mixing valve sensor T4 (GT4)

Others: .....................................................................................................................................................................................................................

Points to be checked prior to commissioning

Heating system (pressure, venting):

HTF collector system (pressure, venting):

Electric cassette: fi lled fi lled planned

Particle fi lter: checked

Sight glass: checked

Temperatures after 10 minutes heating or hot water mode:

Heat carrier out T8 (GT8): ............./..............˚C checked checked checked cleaned

Notes: ......................................................

Notes: ......................................................

Notes: ......................................................

Notes: ......................................................

Notes: ......................................................

Heat carrier in T9 (GT9): ............./..............˚C

HTF collector in T10 (GT10): ........../...........˚C

Heat carrier pump G2 (P2) working correctly:................

HTF collector out T11 (GT11): ........../...........˚C

HTF pump G3 (P3) working correctly:................

72

Commissioning report

Checks on concentrations carried out (collector hose and heating side) .....................................................................................................

Functional test carried out

Menu settings 1.1, 1.4, 5.2 and 5.4. carried out

The instructions about how to use the heat pump have been sent to the client / to the user

Documentation about the apparatus has been handed over

Date and signature of the installer:

73

Technical information


The heat pump’s factory settings

This table indicates the factory settings for all the settings likely to be changed by the fi tter.

Menu Factor y

1.1

1.2

temp. incr. / decr. +/-

Temp. Fine-tune

1.3

1.4

1.5

Fine-tune the heat curve

Heat curve hysteresis

Mix. valve incr/decr

1.6

1.7

1.8

1.9

Adjust. mix. valve

Fine tuning mix. valve curve

Mixing valve curve neutral zone

Max mixing valve curve at GT4

1.10

inst. Int. temp

1.11

Setting of room sensor

1.12

Setting holiday function

1.13

Remote control temperature

1.14

Summer disconnection setting

2.1

No of hours for add. hot water

2.2

2.3

2.4

Range for HW peak

Heating temp. setting

Setting of DHW hysteresis

4.1

Clock setting HP accord. to clock

4.1.1

Level of PAC setting +/-

4.2

4.3

5.2

Timer control settings for add. heat

Clock setting DHW accord. to clock

Select capacity of conn. for additional heat

5.4

5.5

Select function add. heat only

Select add. heat function

5.7

Select external control

5.10

Select P2 mode of funct.

5.11

Select P3 mode of funct.

8.1

Setting add. heat time

8.3.4

Ramp time open

8.3.5

Ramp time closed

9.4

Min. temp pump inlet

9.5

Min. temp. pump outlet settings

4

0º

Inactive

0º

Inactive

Inactive

2/3

OFF yes

0

P2 running cont.

P3 with Compres.

60 minutes

20 min

3 min

-10º

-10º

5

0 day

Inactive

18º

0 hours

Inactive

52º

2º

0º

0º

3º

60º

20º

0º

5º

4

Sensor table

This table indicates the values of the sensor resistors to different temperatures.

Temperature ( ºC)

-40

-35

25

30

35

10

15

0

5

20

-15

-10

-5

-30

-25

-20

65

70

75

80

40

45

50

55

60

85

90 k 

154,00

111,700

15,280

11,900

9,330

7,370

5,870

4,700

3,790

3,070

81,700

60,400

45,100

33,950

25,800

19,770

2,510

2,055

1,696

1,405

1,170

0,980

0,824

0,696

0,590

0,503

0,430

74

Technical information for three-phase models

Compress 3000

Emitted/ Supplied output at 0/35°C 1


Minimum fl ow heating side

Nominal fl ow heating side

Maximum pressure available heating side (at nominal fl ow)

Nominal fl ow of antifreeze mixture to the collector hose

Maximum pressure available to collector hose (at nominal fl ow)

Type of antifreeze

Maximum pressure heating side

Maximum pressure on collector hose side

Maximum output temperature to the heating system

Working temperatures on collector hose side

Integrated collector hose and heat carrier pump

Power supply

Additional heat settings kW kW l/s l/s kPa l/s

14 LW

14.4/3.1

13.9/4.2

0.35

0.50

54

0.78

17 LW

16.7/3.7

16.2/4.9

0.40

0.57

51

0.90

kPa 74 71 bar bar

°C

°C kW

Bioethanol - water or Propylene/ethylene glycol - water

1.5

4

65

-5 to +20

Yes

400V 3N~ 50Hz

3.0 / 6.0 / 9.0

The recommended type of fuse depends on the electrical output

3

6 kW electric cassette


A

A

A Starting current 4

Compressor

Type R407c HFC refrigerant

Connection for heat fl uid out/in

Out/in collector hose connection

Dimensions of model LW (LxDxH)

Weight of model LW

Control unit kg mm mm mm kg

20

25

52

25

32

50

Scroll

2.30

Cu 28

Cu 35

600x600x1520

2.30

Cu 28

Cu 35

190 195

Rego 637


3

4

1

2

5

Output data at 0/35°C and maccord. to clockeating medium fl ow are stated according to the European standard EN 255.


aM type fuse, D curve circuit breaker

Soft starter

Electric anode included

75


Technical information single-phase models

Compress 3000



Minimum fl ow heating side

Nominal fl ow heating side

Maximum pressure available heating side (at nominal fl ow)

Nominal fl ow of antifreeze mixture to the collector hose kW kW l/s l/s kPa

EHP7LW/M EHP9LW/M 11 LW/M

7.2/1.7

6.8/2.2

9.1/2.1

8.5/2.7

10.6/2.4

10.0/3.2

0.18

0.25

0.22

0.31

0.26

0.38

36 34 33 l/s 0.38

0.46

0.57

Maximum pressure available to collector hose (at nominal fl ow) kPa

Type of antifreeze

Maximum pressure heating side

Maximum pressure on collector hose side

Maximum outgoing temperature to the heating system

Working temperatures on collector hose side

Integrated collector hose and heat carrier pump

Power supply

Additional heat settings bars bars

°C

°C kW

45 44

Bioethanol - water or

Propylene/ethylene glycol - Water

1.5

4

65

-5 to +20

Yes

230V 1N~ 50Hz

3.0 / 6.0 / 9.0

80

The recommended type of fuse depends on the electrical output 3



AaM

AaM

A

50

63

34.6

Starting current. soft start

Compressor

Type R407c HFC refrigerant

Connection for heat fl uid out/in

Out/in collector hose connection

Dimensions of Model LW (LwDxH)

Weight of model LW

Dimensions of Model LWM (LwDxH)

Weight of model LWM Hot water heater in stainless steel

Integrated hot water heater with double shell on model LWM.

4

Hot water heater model LWM

Control unit kg mm mm mm kg mm kg litres

40

63

23.8

1.60

Cu 22

Cu 28

152

201

50

63

30.9

Scroll

1.80

Cu 22

Cu 28

600x600x1520

155

600x600x1800

210

Stainless steel

185

Stainless steel

Rego 637

185

2.40

Cu 22

Cu 28

170

218

Stainless steel

185

1

2

3

4

Output data at 0/35°C and min heating medium fl ow are stated according to the European standard EN 255.


aM type fuse, D curve circuit breaker

Electric anode included

76

77

78

79

ROBERT BOSCH LIMITED

PO Box 42048

Tower Junction

Christchurch 8149

Telephone number +64 (0)3 943 0750

Fax number +64 (0)3 943 0756

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