IVT Optima 1000, Optima 1300 Assembly, Commissioning And Maintenance Manual

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Optima

1000 - 1300

Assembly, Commissioning

and Maintenance Guide

Art. no: 290548-29 Version 1.3

FOR THE USER

FOR THE INSTALLER.

INDEX

Manual Heat pumps Optima 1000 and 1300 IVT Industrier AB, 2004-04-01 Article number: 290548-29 Version 1.3

This manual contains copyright protected information that is the property of IVT Industrier AB. No part of this document may be copied or for warded, electronically or mechanically, without prior, written permission from IVT Industrier AB. This includes photographing and translation to another language.

Thank you for choosing a heat pump from IVT Industrier AB

We hope that our heat pump meets your expectations and gives you many years of energy saving. We want you and your family to enjoy a good economy at the same time as you actively safeguard the environment. We have taken today’s demands on heat pumps into consideration and believe that your Optima will give you many useful functions in the future. Your heat pump features an advanced control unit that monitors and controls the temperature in the house and contributes towards improved overall economy. The heat pump Optima has, for example, a holiday function, that’s to say the heat pump can be set at a “low level” while you are away on holiday.

This guide has been written as a reference book. This means the information is divided into different sections and there is an Index at the back: a structure that helps you quickly ﬁ nd relevant information.

IVT is the leading heat pump manufacturer in the Nordic Countries. More than every second heat pump comes from IVT. We have worked with solutions to reduce energy consumption on the environment’s terms for more than 30 years. Today we can present the widest range of heat pumps for efﬁ cient energy saving in all types of housing and properties.

Johnny Wärnelöv Managing director IVT Industrier AB

Table of Contents

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

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

How a heat pump works ................................................................................................ 6

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

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

IVT Optima 1000 and 1300 ....................................................................................................................................8

Control unit Rego 603 ...................................................................................................9

Automatic defrosting ................................................................................................................................................9

The control unit’s two operating modes................................................................................................................... 10

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

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

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

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

Menu display..........................................................................................................................................................13

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

Basic functions (Customer level 1)................................................................................ 14

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

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

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

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

Reading operating times......................................................................................................................................... 25

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

Logging all alarms .................................................................................................................................................27

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

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

Savings .......................................................................................................................30

What to do if a fault occurs...........................................................................................31

Miniature circuit-breakers in the heat pump ..........................................................................................................31

Dimmed menu display ...........................................................................................................................................31

All alarms .............................................................................................................................................................. 32

Glossary .....................................................................................................................66

Index.......................................................................................................................... 68

Table of Contents

FOR THE INSTALLER .......................................................................................... 37

Important information to the installer! ..........................................................................38

Checklist..................................................................................................................... 38

The heat pumps Optima 1000 and 1300 ......................................................................39

What the shipment includes....................................................................................................................................39

Dimensions, clearance and heat transfer connections .............................................................................................40

Component parts....................................................................................................................................................40

Positioning the heat pump......................................................................................................................................41

The heat pump in general.............................................................................................41

Transporting the heat pump...................................................................................................................................41

Minimum and maximum working temperatures .................................................................................................... 42

Fit the particle ﬁ lter ............................................................................................................................................... 42

The heat pump’s two methods of control..................................................................................................................42

The heat pump’s two operating modes ....................................................................................................................42

Connecting the heat pump to the heating system ............................................................43

Connect the heat pump outdoors............................................................................................................................. 43

Connect the heat pump indoors ..............................................................................................................................43

Filling water in the heating system .........................................................................................................................43

Connect the three-way valve....................................................................................................................................43

Connect the Optima heat pump - operating mode A................................................................................................44

Connect the Optima heat pump - operating mode B................................................................................................45

Connecting the heat pump to the power supply .............................................................. 46

Accessories .............................................................................................................................................................46

Safety switch and earth-fault breaker...................................................................................................................... 46

Assembly drawing, electric cabinet .........................................................................................................................47

Circuit diagram the Optima heat pump .................................................................................................................48

External terminal diagram heat pump - operating mode A.....................................................................................49

External terminal diagram heat pump - operating mode B.....................................................................................50

External connections on the heat pump - operating mode A ....................................................................................51

External connections on the heat pump - operating mode B ....................................................................................52

Connecting the general alarm, external input and load monitor.............................................................................53

Installer and service menu (I/S) ................................................................................... 54

How to use the control panel...................................................................................................................................54

Commissioning the heat pump......................................................................................55

Common and speciﬁ c menu displays for operating modes A and B .........................................................................55

Manual test run of the heat pump ..........................................................................................................................57

Commissioning the heat pump - operating mode A .................................................................................................58

Commissioning the heat pump - operating mode B ................................................................................................60

Important points to check after commissioning.......................................................................................................62

Defrosting method .......................................................................................................62

Technical information ..................................................................................................64

The heat pump’s factory settings .............................................................................................................................64

Sound levels ...........................................................................................................................................................64

Technical information............................................................................................................................................65

Sensor table............................................................................................................................................................65

Glossary .....................................................................................................................66

Index.......................................................................................................................... 68

Important information

The heat pump Optima represents a new generation of heat pumps from IVT Industrier. It contains various functions to control the temperature in the house and * the production of hot water. The control unit Rego 603 is the brains of the heat pump. Rego 603 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. 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. Initially you should perform these actions on your own. This manual describes each step in detail. If the problem remains you should contact your dealer.

Important information for the user

Note

It is important as the user that you read through the User manual. Under no circumstances may you make settings that are designed for the installer. This can cause serious malfunction of the heat pump.

* The Optima heat pump can only produce hot water in the house when an external hot water heater is connected to the system.

For the user

FOR THE USER

How a heat pump works

The heat pump collects heat from the outdoor air

The heat pump Optima represents a new generation of heat pumps from IVT Industrier. 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 the heat, in the outdoor air, is moved into the house. The Optima heat pump is therefore positioned on the outside of your house. The heat, which can always be found in the air even when below zero, is converted by a compressor, heat exchanger and condenser to hot water that heats your home. The heat pump can also produce domestic hot water. However, this requires a hot water heater to be connected to the system.

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.

Note

Technology in and around the heat pump

The heat pump consists of four main parts:

1. Evaporator

Evaporates the refrigerant to gas and at the same time transfers the

heat from the air to the refrigerant circuit.

2. Condenser

Condenses the gas to fluid again and transfers the heat to the heating

system.

3. Expansion valve

Lowers the pressure of the refrigerant.

4. Compressor

Increases the pressure of the refrigerant.

These four main parts are linked in two closed 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.

How a heat pump works

FOR THE USER

The route of the refrigerant through the heat pump in heat radiator mode

In the evaporator (heat exchanger) the refrigerant meets the outdoor air. The air is drawn through the evaporator by a fan located on top of the heat pump. The refrigerant, which was previously in a liquid state, will evaporate in this process. The pressure is low and heat is required. Heat is taken from the outdoor air. A sensor in the expansion valve (6) ensures the evaporator utilises as much of the “free energy” as possible before the refrigerant (in a gas state) is led into the compressor.

In the compressor the pressure of the refrigerant increases. The temperature of the vapour reaches approximately +100ºC. The warm gas is then led into the condenser.

The condenser is the heat pump’s heat emitting part. In the condenser, which is a fully soldered heat exchanger in stainless steel, the refrigerant (gas state) meets the water from the heating system (radiators and ﬂ oor coils). When the warm gas is cooled by the circulating heating water, it changes into a liquid state (condenses). Energy is emitted in this process to the heating system or hot water. After the condenser, the refrigerant, which is now in liquid form, continues through a drying ﬁ lter.

The drying ﬁ lter is used to collect any moisture in the system. After the ﬁ lter, the refrigerant passes through a sight glass.

The sight glass is used to check the ﬂ uid level in the system. There should be no bubbles in the sight glass during normal operations. However, there might be bubbles when the heat pump is started and stopped or during defrosting. After the sight glass, the refrigerant continues on to an expansion valve.

In the expansion valve the pressure of the refrigerant drops. This also causes the temperature to drop. When the refrigerant has left the valve and passes the evaporator it changes to vapour again. This completes the refrigerant circuit. The expansion valve is equipped with a sensor (bulb) just before the compressor. The sensor controls the amount of ﬂ uid entering the evaporator.

Heat transfer ﬂ uid out

Heat transfer ﬂ uid in

Refrigerant ﬂ ow in heat rad. mode

Refrigerant ﬂ ow in defrosting mode

Service conn.

Non-return

valve

Suction accumulator

Bulb

Low pressure switch

Service conn.

High pressure

switch

Four-way valve

How a heat pump works

Service conn.

FOR THE USER

Component parts of the heat pump

IVT Optima 1000 and 1300

The Optima consists of a heat pump (outdoor part) and an electric cabinet (indoor part). The electric cabinet houses a control panel from which you control all functions.

Optima heat pump

Coil ﬁ ns

Electric cabinet (closed)

Control panel

Electric cabinet (open)

Miniature circuitbreakers

Control unit Rego 603

Cable entry

Fan

Component parts of the heat pump

FOR THE USER

Control unit Rego 603

The control unit Rego 603 is the brains of the Optima 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.

Additional heat gives more output

Additional heating is required when the heat pump is unable to meet the heating requirements or when it has stopped at a temperature lower than approximately -10ºC. The additional heat is provided by an electric/oil-ﬁ red boiler or an electric cassette that can be connected to the control unit and which is automatically started and stopped when necessar y. Note that when the heat pump is running, the additional heat source only supplies the power that the heat pump cannot produce. When the heat pump is once more able to meet the heating demand, the additional heat is automatically switched off.

Hot water is given priority over heating water

The heat pump can produce hot water when a hot water heater is connected to the system. 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 coils 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. The heating water passes through the hot water heater’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 alternates 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.

Control unit Rego 603

Double-shelled hot water heater

Heating water

Hot water

Electric cabinet

Control unit Rego 603

Automatic defrosting

Ice forms on the evaporator at outdoor temperatures below +5ºC. When ice forms to an extent that it obstructs the air ﬂ ow through the evaporator automatic defrosting starts. Defrosting is controlled by a four-way valve. The valve reverses the ﬂ ow of the refrigerant in the circuit so that the hot gas melts the ice on the evaporator ﬁ ns. See the ﬂ ow of the refrigerant through the heat pump when defrosting in the ﬁ gure under the heading

How a heat pump works.

Note

During defrosting, the air from the fan-assisted radiator may seem cold. This is perfectly normal.

FOR THE USER

The control unit’s two operating modes

When a heat pump is installed it must be setup for a speciﬁ c operating mode. An operating mode relates to the heat pump’s working situation which is dependent on the prevailing conditions, for example, whether an electric or oil-ﬁ red boiler is to be connected.

The Optima heat pump provides for two different operating modes: operating mode A and operating mode B. It is the task of the installer to adapt the heat pump to the operating mode in question.

Operating mode A - Heat pump with external electric cassette

On delivery the heat pump is set to operating mode A. This means the heat pump works with additional heat provided by an external electric cassette. Operating mode A is based on the installation of a sensor on the outside of the house. The sensor sends information about the outdoor temperature to the control unit. The control unit controls the production of heat according to an adjustable heat curve. The control unit can also control heat production based on an extra heat curve. See the heading Set extra heat curve with mixing valve. This is applicable, for example, when you combine radiators with ﬂ oor heating.

When there is a hot water heater in the system, the heat pump always heats the hot water before the heating water. When help is required for heating, the electric cassette is controlled from the heat pump.

Operating mode B - Heat pump together with mixed additional heat

Operating mode B is based on the heat pump working together with a mixed additional heat source, for example, an existing electric/oil-ﬁ red boiler. This means the heat pump utilises the help of the external additional heat when necessary. The control unit Rego 603 can not use an extra heat curve in operating mode B. In general operating mode B works like operating mode A, except that operating mode B lacks some functions.

Control unit Rego 603

FOR THE USER

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

We have already described the control unit’s two working situations, operating modes. The control unit also 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 an outdoor sensor

Control with an outdoor sensor is the most common method used by the control unit to control the heat pump. When the heat pump is delivered it is set in this control mode. A sensor is ﬁ tted on the outside wall of the house. It sends signals to the control unit in 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. I.e. when 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 (curves) on the control unit. Selecting a lower curve gives higher energy savings.

Control with an outdoor sensor supplemented with a 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.

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

Note

Control unit Rego 603

FOR THE USER

Control panel

The control panel is the heart of your heat pump installation. All settings are made from the control panel and it also displays any alarms. When you have made your settings, the control panel makes sure they are saved in the control unit Rego 603 to carry out your wishes.

Menu dial

Status lamps

Power switch

(ON/OFF)

Menu display

Menu buttons

Controls and status lamps

Alarm status

Lamp ﬂ ashes: A fault has occurred in the heat pump. Lamp lit: The alarm has been acknowledged and the heat

pump waits for the cause of the fault to reset.

Hot water status

Lamp lit: The heat pump is heating water in the hot water heater. Lamp ﬂ ashes: The heat pump has a hot water peak or is producing extra hot water.

Additional heat status

Lamp lit: The heat pump is using additional heat from, e.g. an electric cassette.

Operating status

Lamp lit: The heat pump (compressor) is operational. Lamp ﬂ ashes: The heat pump will start within 15 minutes. Lamp not lit: The heat pump (compressor) is not opera-

tional.

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.

Heat

Temperature

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

Info

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

Press once to enter the main menu. The main menu contains all setting menus and temperature displays.

Info

Menu display

Rego 603 K1

040216 16:08:15 Tu Heat Info Menu

Rego 603 K1

040216 16:08:15 Tu Heat Info Menu

FOR THE USER

Control panel

Menu dial

The menu dial is used to scroll through the menu displays. 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. For example, when you turn the dial clockwise the value will increase.

Menu display

The menu display gives you a great deal of 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.

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.

Note

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

Rego 603 K1

040216 16:08:15 Tu Heat Info Menu

Rego 603 K1

040216 16:08:15 Tu Heat Info Menu

Temp. incr. / decr.

0 4,0 10 Return Adjust

FOR THE USER

Rego 603 K1

040216 16:08:15 Tu Heat Info Menu

Menu outline for Basic functions (Customer level 1)

The menu display is standard on all heat pumps.

Temp. Þ ne-tune

Page 17

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

Temp. incr. / decr.

Page 16

Room temperature

Page 18

Extra hot water

Page 18

STANDBY No rad heat req. No hot water req.

Page 15

HOT WATER MODE

Heat pump only

Page 15

HEAT RAD MODE

Compr. + Add. heat

Page 15

HEATING REQ 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

Temperature settings Temp. Þ ne-tune range -10/+10 1.2

Page 17

Temperature settings Setting of room temperature 1.10

Page 18

Main menu Adjusting the hot water settings 2

Page 19

Hot water settings Duration of add. hot water 2.1

Page 18

Main menu Monitor all temperatures 3

Page 19

Temperature readings

Return radiator GT1

Temperature readings

Out GT2

Temperature readings

Hot water GT3

Temperature readings

Mix valve ß ow GT4

Temperature readings

Room GT5

Temperature readings

Compressor GT6

Temperature readings

Heat trß uid out GT8

Temperature readings

Heat tr ß uid in GT9

Temperature readings

Condenser GT10

Page 20

Note

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

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)

TimeDate

Customer level 1

Day

Basic functions (Customer level 1)

Rego 603 K1

040216 16:08:15 Tu Heat Info Menu

FOR THE USER

Rego 603 K1

040216 16:08:15 Tu Heat Info Menu

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. Here follows a few of the windows displayed:

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 hot water heater. The hot water is a few degrees warmer.

The heat pump and additional heat are running.

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 explain how 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 curve

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. If instead the temperature is 35ºC, the ﬂ ow water is heated until the return water is warm enough.

Basic functions (Customer level 1)

STANDBY No rad heat req. No hot water req.

HOT WATER MODE Heat pump only Stop temp 53.0° Present temp 42.0°

HEAT RAD MODE Compr. + Add. heat Stop temp 45.0° Present temp 44.0°

HEATING REQ Heat pump starts in 320 seconds

FOR THE USER

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.

Curve slope:

1-2 Normal setting for ﬂ oor heating

in concrete.

3-4 Normal setting for ﬂ oor heating

in wooden joists. 4-6,5 Normal setting for radiators. 7-10 Abnormal high setting.

Note

Outdoor temperature (ºC)

Curve slope (0-10)

Return temperature (ºC)

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.

2. Press the Adjust button.

3. Turn the menu dial clockwise to increase the heating, i.e. choose a higher curve.

(Adjust in small increments, 0.5-1.0 units is usually enough).

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

Note

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 -22ºC we see the curve slope has reached the limit value (+48OC) for the return temperature.

You should wait at least twenty-four hours when increasing or decreasing the heating before making a new adjustment.

At outdoor temperatures around 0ºC you should “adapt the heat curve” to obtain the desired indoor temperature. Read how to “adapt the curve” in the section Extra functions - Customer level

2 / Temperature settings / Adapting the heat curve.

Note

Basic functions (Customer level 1)

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.

Curve slope:

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

High return - dashed line:

When the return temperature rises above 48ºC an alarm is given. The alarm switches off the heat pump. The heat pump star ts automatically when the return temperature drops.

Temp. incr. / decr.

0 4,0 10 Return Adjust

Temp. incr. / decr.

0 5,0 10 Return Adjust

FOR THE USER

By using the menu dial on the control panel the selected curve 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 cur ve in the menu Temp. ﬁ ne-tune. This is what to do:

1. Press the Heat button in the initial menu.

2. Turn the menu dial clockwise until you reach the menu Temp. fine- tune.

3. Press the Adjust button.

4. Turn the menu dial clockwise to increase the heating and anti-clockwise to lower it.

(Adjust in small increments, 0.5-1.0 units (degrees) is usually enough.)

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

Fine-tune the heat curve

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 menu display Temp. ﬁ ne-tune. 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, which also gives a higher temperature on the water to the radiators.

Return temperature (ºC)

Outdoor temperature (ºC)

Basic functions (Customer level 1)

Temp. Þ ne-tune

-10° 0,0° 10° Return Adjust

FOR THE USER

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. In Extra functions (Customer level 2) you can also set how much you want the sensor to affect the heating system. This is what to do:

1. Press the Heat button in the initial menu.

2. Turn the menu dial clockwise until you reach the menu Room tempera- ture.

3. Press the Adjust button.

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

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

Set the heat pump for extra hot water

When a hot water heater is connected to the system you can produce extra hot water by temporarily increasing the temperature of the water in the hot water heater. The temperature increase is effected with the help of the external electric cassette. A higher water temperature gives more hot water when, for example, a large number of people wish to shower. The heat pump ﬁ rst makes sure that the water reaches a temperature of approximately 50ºC. The electric cassette then continues to heat the water to approximately 65ºC. On the control panel and the menu Extra hot water you choose how long the function should run. This is what to do:

1. Press the Heat button in the initial menu.

2. Turn the menu dial clockwise until you reach the menu Extra hot water.

3. Press the Adjust button.

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

5. Save the value by pressing the Save button.

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.

The Extra hot water function is available in operating mode A only.

Note

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

Note

Basic functions (Customer level 1)

Room temperature

10° 20,0° 30° Return Adjust

Extra hot water

1hrs 24hrs 48hrs Return Adjust

Extra hot water

1hrs 24hrs 48hrs Return Save

FOR THE USER

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.

3. 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.

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 par t in the heat pump’s daily operations. It may, for example, adjust the heating 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.

3. Press the Select button.

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

Note

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

Basic functions (Customer level 1)

Main menu Indoor temperature settings 1 Return Select

Main menu Adjusting the hot water settings 2 Return Select

Main menu Monitor all temperatures 3 Return Select

Rego 603 K1

040216 16:08:15 Tu Heat Info Menu

FOR THE USER

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

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

The menu is only shown when you have a hot water heater connected to the system. The menu shows the 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 shows the ﬂ ow temperature in the circuit when a mixing valve is used, e.g. for ﬂ oor heating. The temperature varies with the outdoor temperature.

The menu only applies together with a room sensor. The menu shows the temperature in the room where the sensor is installed. Tgt (Set point value) is the value the heat pump attempts to maintain.

The menu shows the compressor’s working temperature. The temperature varies between 70ºC and 135ºC 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 in hot 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 in hot water production mode. The heat pump stops at 48ºC for reasons of safety.

The menu shows the temperature of the water inside the heat pump’s condenser. It varies depending on the outdoor temperature and whether the heat pump is in hot water production mode. The temperature drops when defrosting. If the temperature becomes too low the defrosting alarm trips.

Temperature readings Return radiator GT1 Off 21,3

Now 21,7

Return

Temperature readings Out GT2

14,0

Return

Temperature readings

Hot water GT3

Off 47,5

Now 45,8

Return

Temperature readings

Mix valve ß ow GT4

Tgt 40,3

Now 43,0

Return

Temperature readings

Compressor GT6

90,0

Return

Temperature readings Heat trß uid out GT8

45,0

Return

Temperature readings Heat tr ß uid in GT9

22,0

Return

Temperature readings

Room GT5

Tgt 20,0

Now 19,5

Return

Temperature readings

Condenser GT10

22,0

Return

All menus for the temperature sensors

All the windows associated with the heat pump’s temperature sensors are presented below. Note that you cannot make any settings in these menus, only read the current values. Some menus are standard while others are available only in combination with different accessories.

Basic functions (Customer level 1)

FOR THE USER

Menu outline for Extra functions (Customer level 2)

Note

Only the most frequently used menus in Customer level 2 are shown in the menu outline. Use the menu dial to scroll through the menus.

Press the Heat button until Access = CUSTOMER2 is displayed.

(Initial menu)

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 in a speciﬁ c operating mode.

Heat curve adjustm. (break) 1.3

Page 22

Main menu Indoor temperature settings 1

Page 22

Mix. valve incr/decr range 0-10 1.5

Page 23

Mix. valve Þ ne-tune range -10/+10 1.6

Page 23

Mix. valve curve adjustm. (break) 1.7

Page 23

Setting of room sensor inß . 1.11

Page 22

Setting of holiday function 1.12

Page 22

Remote control heat 1.13

Page 22

Setting of summer disconnection 1.14

Page 22

Main menu Adjusting the hot water settings 2

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 on HP and add. heat 7

Page 25

Heat pump in operat. number of hours? 7.1

Page 26

Distribution HP DHW - Rad in % 7.2

Page 26

Add. heat in operat. number of hours? 7.3

Page 26

Distribut. add. heat DHW-Rad in % 7.4

Page 26

Main menu Clock, setting time and date 10

Page 26

Main menu Alarm logging of all alarms 11

Page 27

Main menu

Return to factory settings 12

Page 27

Extra functions ( Customer level 2)

In the section Basic functions (Customer level 1) we presented 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, the heat pump will automatically return to Customer level 1 after 30 minutes. This is what to do to access Extra functions

(Customer level 2):

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

2. Press the Menu button to open the Main menu. You also have access to all the basic functions on Customer level 1 from Customer level 2.

Extra functions (Customer level 2)

Rego 603 K2

040216 16:08:15 Tu Heat Info Menu

Rego 603 K2

040216 16:08:15 Tu Heat Info Menu

FOR THE USER

Extra functions (Customer level 2)

Main menu Indoor temperature settings 1 Return Select

Temperature settings

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

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

2. Press the Menu button.

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

Adapting the heat curve

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. 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 function

The menu is only shown for heat pumps having a room sensor installed and which are set to operating mode A. 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 and which are set to operating mode A. In addition, special remote control equipment is needed, this is available as an accessory. Remote control cannot be combined with any other external control. 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. The function only works when there is a hot water heater installed.

Temperature settings Setting of room sensor inß . 1.11 Return Select

Temperature settings Setting of holiday function 1.12 Return Select

Temperature settings Remote control heat 1.13 Return Select

Temperature settings Setting of summer disconnection 1.14 Return Select

Temperature settings Heat curve adjustm. (break) 1.3 Return Select

FOR THE USER

Extra functions (Customer level 2)

Set extra heat curve with mixing valve

If you have ﬂ oor heating 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

1. Press the Heat button in the initial menu.

2. Turn the menu dial clockwise until you reach the menu Mix. valve

incr/decr.

3. Press the Adjust button.

4. Turn the menu dial clockwise to increase the mixing valve. Turn the menu dial anti-clockwise to reduce the mixing valve.

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

Fine-tune the mixing valve

1. Press the Heat button in the initial menu.

2. Turn the menu dial clockwise until you reach the menu Mix. valve

fine-tune.

3. Press the Adjust button.

4. Turn the menu dial clockwise to increase the mixing valve. Turn the menu dial anti-clockwise to reduce the mixing valve.

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

Adapting the mixing valve curve

You can “break” the mixing valve curve up or down every ﬁ fth outdoor degree. For example, you can make a hump in the curve at 0ºC. The purpose of breaking the curve is to be able to inﬂ uence the heat pump’s heat production at extra sensitive outdoor temperatures.

Note

The scale covers the range 0 to 10. Extra heat curve with mixing valve only works with an extra ﬂ ow sensor T4 (GT4).

Note

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

Mix. valve incr/decr

0 2,0 10 Return Adjust

Mix. valve Þ ne-tune

-10O 0,0O 10

Return Adjust

Note

The ﬂ oor heating circuit should have heat curve 2.

Temperature settings Mix. valve curve adjustm. (break) 1.7 Return Select

FOR THE USER

Hot water settings

Hot water peak

Recurring increase in the hot water temperature

The menu is only shown for heat pumps that are setup for operating mode A and have an electric cassette for additional energy. The Interval for hot water peak menu is used to set the interval for a recurring increase in the hot water temperature. If, for example, you set the value seven days, the temperature is increased once a week to approximately 65ºC.

Timer control

Clock setting of heat pump

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.

Example:

You want to set the heat pump so that it maintains a 5ºC 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).

2. Press the Select button.

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 first two zeros (00).

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

Extra functions (Customer level 2)

Clock setting HP 1

Mo 22:00-06:00

Return <- ->

Clock setting HP 1

Mo 00:00-00:00

Return ->

Clock setting HP 1

Mo 00:00-00:00

Return ->

Clock setting HP 1

mo 00:00-00:00

Return Adjust

Clock setting Clock setting HP accord. to clock 4.1 Return Select

Hot water settings Interval for hot water peak 2.2 Return Select

FOR THE USER

Extra functions (Customer level 2)

9. Finish the setting 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 -5ºC, which is to apply for the chosen time zone.

13. Finish by pressing the Save button.

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

Clock setting of the hot water according to clock

The function Clock setting DHW accord. to clock (menu 4.3)works in 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 tarif fs are charged. The procedure is the same as in the previous example. Use this to make your settings.

Reading operating times

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:

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

2. Press the Menu button.

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

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

Note

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

Rego 603 K2

040216 16:08:15 Tu Heat Info Menu

Clock setting Clock setting DHW accord. to clock 4.3 Return Select

Main menu Op. time readings on HP and add. heat 7 Return Select

Clock setting HP 1

Mo 22:00-06:00

Cancel <- Save

Clock setting Setting level heat pump +/- 4.1.1 Return Select

FOR THE USER

Extra functions (Customer level 2)

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 applies to heat pumps installed for operating modes A and B. The menu shows the heat pump’s distribution between hot water mode and heating mode. The allocation is stated as a percentage. Heating mode refers to heating of the radiator water.

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.

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

The menu applies to heat pumps installed for operating modes A and B. The menu shows the additional heat's allocation between hot water mode and heating mode. The allocation is stated as a percentage. Heating mode refers to the heating of the heating water.

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 to access the menu Clock, setting time and date:

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

2. Press the Menu button.

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 with the help of the menu buttons and the menu dial.

Op. time readings Heat pump in operat. number of hours? 7.1 Return Select

Op. time readings Distribution HP DHW-Rad in % 7.2 Return Select

Op. time readings Add. heat in operat. number of hours? 7.3 Return Select

Op. time readings Distribut. add. heat DHW-Rad in % 7.4 Return Select

Main menu Clock, setting time and date 10 Return Select

FOR THE USER

Extra functions (Customer level 2)

Logging all alarms

You can easily see any alarms given by the heat pump. The menu provides you with information about the alarm type and when the alarm occurred. When an asterisk (*) is shown in the menu display this means the alarm is still active. This is how to access the menu Alarm logging of all alarms (menu 11):

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

2. Press the Menu button.

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.

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 to access the menu Return to factory settings (menu 12):

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

2. Press the Menu button.

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

4. Press the Select button.

5. Return to the factor y settings by pressing the Yes button.

When restoring the factory settings while on Customer level 1 or 2 only the settings made on these levels are restored. Settings made by the installer on the Installer/Service level are not affected.

Main menu Indoor temperature settings 1 Return Select

Main menu Alarm logging of all alarms 11 Return Select

Main menu Indoor temperature settings 1 Return Select

Main menu Return to factory settings 12 Return Select

FOR THE USER

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:

Remove dirt and leaves Particle filter Protective covers Evaporator

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.

Remove the covers by loosening the

screws on top of the heat pump.

Unscrew the front and side covers

You must unscrew the outer covers to access some of the maintenance areas.

To remove the covers from the heat pump:

1. Turn the screws on top of the Optima a few turns.

2. Rest the cover against your body.

3. Lift the cover upwards to release the lower edge.

Remove dirt and leaves

Over time leaves and other dirt can enter the heat pump. You can easily remove any dirt through the inspection hatch on the side of the heat pump. Unscrew the left side plate (seen from the front) and use a brush to remove the dirt. Check that the drainage hole is not blocked. Exercise care around the thin aluminium ﬁ ns. They are fragile and you can injure yourself if careless. The plate and drainage hole can be rinsed with water if necessary.

Inspection

hatch

Drainage hole

Maintenance

Protective covers

Over time dust and other dirt will collect on the heat pump. You should wipe the protective casing with a damp cloth if necessary. Scratches and damage to the outer plates should be touched up using an anti corrosive rust-inhibitor. Use a car wax to protect the ﬁ nish.

FOR THE USER

Evaporator

When you notice a covering (for example dust or insects) on the surface of the evaporator (coil ﬁ ns), you should wipe it off.

This is what to do:

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

2. Spray a degreasing agent on the fins of the evaporator.

3. Rinse off the coating and degreasing agent with water. Do not use a too powerful water jet. A high pressure can damage the fins. When the evaporator is extremely dirty you can rinse the coil from inside the inspection hatch. Any cleaning agent is collected in the drainage hose.

Clean the dirt from the coil ﬁ ns

using a degreasing agent and

water.

Maintenance

Particle ﬁ lter

The task of a particle ﬁ lter ( dirt ﬁ lter) is to ensure no particles or dirt enter the heat exchangers. Over time the ﬁ lter can become clogged and must be cleaned. To clean the ﬁ lter:

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. Refit the screen, the circlip and sealing cap.

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

The particle ﬁ lter is ﬁ tted indoors on the heating pipe.

Note

Screen

Circlip

Sealing cap

FOR THE USER

Lower the heating.

Open the thermostat valves completely.

Savings

The heat pump’s task is to produce heating of the house as cost-effectively as possible. You can inﬂ uence operating costs by your own settings for the heat pump. In addition you can inﬂ uence your energy savings by, for instance:

Lowering the indoor temperature.

Opening thermostat valves completely.

Lowering the indoor temperature

The lower the indoor temperature the better the heating economy. So make sure you do not set the heat curve too high. Use your heating system in the best possible way by keeping the entire surface of radiators or ﬂ oor coils warm.

1. Seal windows and doors, but not too tight.

2. When you air the room, do it quickly and with a cross draught.

Opening thermostat valves completely

The thermostat valves on radiators and ﬂ oor coils can have a negative effect on the heating system by slowing the ﬂ ow and, by doing so, the heat pump must compensate with a higher temperature. If thermostat valves are installed they should be opened fully, except in bedrooms or other areas, where a lower temperature is required. In these rooms they can be somewhat closed.

Savings

FOR THE USER

What to do if a fault occurs

The control unit Rego 603 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.

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. Replace the fuse if necessary. If miniature circuit-

breakers 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 black toggle switch.

2. The heat pump automatically returns to its operating

mode 15 minutes after the fault has been rectiﬁ ed.

Miniature circuit-breakers in the heat pump

The Optima has a miniature circuit-breaker in the heat pump’s electric cabinet. The electric cabinet should be installed indoors and close to the wall that backs onto the heat pump outdoors.

Miniature circuit-breaker

ALARM

Power failure 031020 16:08:15 Info Ackn.

Cause

Date when

the alarm

occurred

Time when the alarm occurred

Examples 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.

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

Note

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

What to do if a fault occurs

FOR THE USER

Power failure Compressor temperature External electric cassette Phase sequence error Heat transfer fluid out max

High return to the heat pump Low pressure switch High pressure switch Sensor fault Motor protection fan Defrosting alarm

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.

List of all alarms:

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 48ºC.

Possible cause 1: The heat setting is set so high that the

heating system’s return temperature is too high.

Action: 1. Reduce the temperature setting.

Possible cause 2: The hot water temperature is set too high.

Action: 1. An alarm is given in hot water mode.Contact the

installer to adjust the hot water temperature.

Possible cause 3: The ﬂ oor heating or radiator valves are

closed.

Action: 1. Open the valves.

Possible cause 4: The ﬂ ow across the heat pump is greater

than the ﬂ ow in the heating system.

Action: 1. Reduce the speed of the heat carrier pump or

increase the speed of the main pump in the heating system. Contact your dealer for help.

The heat pump starts automatically when the temperature drops. The alarm does not need to be acknowledged, yet if you wish to access the menus you can clear the alarm window by acknowledging.

Note

What to do if a fault occurs

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.

Note

The menu display shows:

ALARM (GT9)

High return HP 031020 16:08:15 Info Ackn.

FOR THE USER

Low pressure switch (LP)

Possible cause 1: The evaporator is clogged.

Action: 1. Clean the evaporator. See Maintenance.

2. Press the Ackn. button.

3. Wait for the heat pump to start.

4. If the fault returns, contact your dealer.

Possible cause 2: Lack of refrigerant in the heat transfer circuit.

Action: 1. Press the Ackn. button.

2. Wait for the heat pump to start.

3. If the fault returns, contact your dealer.

Possible cause 3: Fault in the automatic defrosting system or fan

motor.

Action: 1. Press the Ackn. button.

2. Wait for the heat pump to start.

3. If the fault returns, contact your dealer.

Possible cause 4: Faulty expansion valve (the alarm appears in

time periods of 3-4 weeks).

Action: 1. Press the Ackn. button.

2. Wait for the heat pump to start.

3. If the fault returns, contact your dealer.

High pressure switch (HP)

Possible cause 1: Air in the heating system.

Action: 1. Press the Ackn. button.

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.

Action: 1. Press the Ackn. button.

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

3. Check that all the valves are open.

4. Possibly increase the pump speed.

Possible cause 3: Particle ﬁ lter is clogged.

Action: 1. Press the Ackn. button.

2. Check the ﬁ lter.

3. Clean the ﬁ lter if necessar y, see Maintenance.

Possible cause 4: The refrigerant circuit is overﬁ lled.

Action: 11. Press the Ackn. button.

2. Wait for the heat pump to start.

3. If the fault returns, contact your dealer.

Possible cause 5: The dr ying ﬁ lter is clogged.

Action: 1. Press the Ackn. button.

2. Wait for the heat pump to start.

3. If the fault returns, contact your dealer.

LP in the menu display stands for low pressure switch.

Note

What to do if a fault occurs

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.

Note

The menu display shows:

ALARM (LP)

Low pressure switch 031020 16:08:15 Info Ackn.

ALARM (HP)

High pressure switch 031020 16:08:15 Info Ackn.

FOR THE USER

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 sensor under the heading All menus for the temperature sensors.

Possible cause 1: Temporary error.

Action: 1. Wait and see.

Possible cause 2: Defective sensor or incorrect connection.

Action: 1. Contact your dealer.

Motor circ. fan switch

Possible cause 1: The fan has jammed.

Action: 1. Check that nothing has become stuck in the fan.

Possible cause 2: Faulty fan motor.

Action: 1. Contact your dealer.

Possible cause 3: Temporary error.

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

Defrosting alarm

The defrosting alarm is caused by a too low water temperature in the heat pump.

Possible cause 1: Air in the heating system.

Action: 1. Press the Ackn. button.

2. Check whether there is air in the radiators.

3. Fill the heating system and vent if necessary.

Possible cause 2: Particle ﬁ lter in the heating transfer circuit is

clogged.

Action: 1. Press the Ackn. button.

2. Check the ﬁ lter.

3. Clean the ﬁ lter if necessar y.

Possible cause 3: Faulty heat carrier pump.

Action: 1. Contact your dealer.

Possible cause 4: Not enough ﬂ ow over the heat pump.

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

2. Check that all the valves are open.

Possible cause 5: Insufﬁ cient water level in the house’s heating

system.

Action: 1. Contact your dealer.

The menu display shows:

What to do if a fault occurs

The menu display shows:

ALARM (GT1)

Sensor return rad.

031020 16:08:15

Info Ackn.

ALARM (MB2)

Motor circ. fan sw.

031020 16:08:15

Info Ackn.

ALARM (GT10)

Defrosting alarm

031020 16:08:15

Info Ackn.

FOR THE USER

The heat pump maintains all its settings in the event of a power failure, for example, during a thunder storm. When the power returns the heat pump automatically starts up according to the previous settings.

Note

The menu display shows:

Power failure

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 the fuse protection (small disc) has become loose. 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.

Compressor temperature T6 (GT6)

Possible cause 1: The working temperature of the compressor is

too high.

Action: 1. Press the Ackn. button.

2. Contact your dealer at repeated alarms.

Possible cause 2: Intermittent temperature rise due to abnormal

operating conditions.

Action: 1. Press the Ackn. button.

2. Wait and see.

External electric cassette (EK)

The external electric cassette is installed indoors and connected to the heat pump’s control unit Rego 603.

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

has tripped.

Action: 1. Press the Ackn. button.

2. Reset the miniature circuit-breaker for the electric cassette by pushing up the toggle switch.

3. Contact your dealer if the fuse trips again.

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

tripped.

Action: 1. Press the Ackn. button.

2. Reset the overheat protection on the electric cassette.

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

What to do if a fault occurs

The menu display shows:

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

Note

ALARM

Power failure

031020 16:08:15

Info Ackn.

ALARM (GT6)

Compressor temp 031020 16:08:15

Info Ackn.

ALARM (EK)

Electric cassette

031020 16:08:15

Info Ackn.

FOR THE USER

3-phase incorrect

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. Replace 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.) Action: 1. Press the Ackn. button.

2. Switch the phase sequence on the incoming supply.

The heat pump starts automatically once the phase

sequence has been switched.

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 higher than the set value.

Possible cause 1: Not enough ﬂ ow over the heat pump.

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

2. Check that all the valves are open.

Possible cause 2: Particle ﬁ lter is clogged.

Action: 1. Clean the particle ﬁ lter, see Maintenance.

The menu display shows:

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.

Note

The menu display shows:

The heat pump starts automatically when the temperature drops. The alarm does not need to be acknowledged, yet if you wish to access the menus you can clear the alarm window by acknowledging.

Note

ALARM

3-phase incorrect

031020 16:08:15

Info Ackn.

ALARM (GT8) Heat tr. ß . out max

031020 16:08:15

Info Ackn.

What to do if a fault occurs

FOR THE INSTALLER

The section For the Installer provides the heat pump installer with a description of how a heat pump is installed and commissioned. The installation section consists of a plumbing part and an electrical par t. These provide technical data such as measurements, wiring diagrams and installer menus. We hope that you read through this section carefully and that you respect all notes and warning texts.

Note

It is important that as the installer you also read through the For the User section of the manual. There you will ﬁ nd a great deal of information necessar y to get a comprehensive understanding of the Optima heat pump.

Contents:

Important information to the installer

Checklist

What the shipment includes

The heat pump in general

Dimensions and heat transfer connections

The heat pump’s two operating modes

Connect the Optima heat pump to the heating system

Connect the Optima heat pump to the mains supply

External connections to the heat pump

Connecting the additional heat

Commissioning the Optima heat pump

Defrosting method

Technical information

Important information to the installer

For the installer

FOR THE INSTALLER

Important information to the installer!

Checklist

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

1. Position the heat pump on a solid base.

2. Install incoming and outgoing pipes for the hot side.

3. Install the drainage pipe.

4. Install the particle filter, connect to an external additional heat supply

(electric cassette or electric/oil-fired boiler) and possible hot water heater.

Warning

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

The Installer section of this manual gives you all the information necessary to install the heat pumps Optima 1000 and 1300. The section is divided into several parts. The order of these is based on the recommended installation sequence from IVT. Use the supplied checklist during installation.

Before you start the installation of the Optima heat pump we would like to bring the following to your attention:

The heat pump may be temporarily tilted with the compressor

downwards. However, never lay the heat pump down.

Before the heat pump is commissioned, the heat transfer systems

including the heat pump must be filled and vented.

Check that plumbing connections are intact and have not shaken loose

during transport.

The heat pump is equipped with the control unit Rego 603. When the

heat pump is commissioned the control unit must be set for the selected operating mode. Read more about the settings in Commissioning the heat

pump.

The control unit Rego 603 measures the phase sequence and gives an

alarm if the power supply has been connected incorrectly. The correct phase sequence is necessary for the fan to run in the right direction.

If Optima is used in a system with a fan-assisted radiator, the water

volume in the system is very small. During defrosting the heat pump takes some of its energy from the heating system. This means the heating system will cool down. It is therefore ver y important that the fans in the fan-assisted radiators run during defrosting alternatively are connected to a cylinder of approximately 100 litres.

Wiring should be kept as short as possible to protect the system from

downtime, for example during a thunderstorm.

The heat pump installation must follow applicable regulations.

Note

During defrosting, the air from the fan-assisted radiator may seem cold. This is perfectly normal.

Note

Only qualiﬁ ed installers may carry out the installation. The installer must follow to applicable regulations and recommendations from IVT.

Important information to the installer / Checklist

FOR THE INSTALLER

The heat pumps Optima 1000 and 1300

What the shipment includes

The following components are included in the delivery of the Optima heat pumps 1000 and 1300:

Manual

Quantity: 1 Art. no: 290 548-9

Circlip pliers

Quantity: 1 Art. no: 142 021

Return sensor

Quantity: 3 Cable: 4 m Art. no: 240 693

Particle ﬁ lter with screen

Quantity: 1 Art. no: 142 025

Outdoor sensor T2 (GT2) with cable

Quantity: 1 Art. no: 240 690

Rubber feet

Quantity: 4 Art. no: 381 007

5. Connect the pump to the heating system. Follow the instructions for

the operating mode in question.

6. Install the outdoor sensor and possible room sensor.

7. Fill and vent the heating system before commissioning.

8. Connect the heat pump to the electrical system. Use the wiring

diagram applicable to the operating mode in question.

9. Connect an external switch, the electric cabinet, an earth-fault breaker

and the additional heat supply.

10. Connect a general alarm, external controls and load monitor.

11. Commission the heat pump by making all the necessary settings on

the control panel.

12. Check the heat pump after commissioning.

Electric cabinet

Quantity: 1

The heat pumps Optima 1000 and 1300

FOR THE INSTALLER

Dimensions, clearance and heat transfer connections

The following illustrations show the heat pump’s dimensions and heat transfer ﬂ uid connections. All measurements are stated in millimetres.

Component parts

From above

Right-hand sideBack

Heat transfer ﬂ uid out R25 Heat transfer ﬂ uid in R25

Fan

Distribution box

Evaporator

Compressor

Drying ﬁ lter

High pressure switch

Sight glass

Service connection

Four-way valve

Suction accumulator

Non-return valve

Expansion valve

Low pressure switchCondenserService connection

Right

Left

Front

Drainage R25

The heat pumps Optima 1000 and 1300

FOR THE INSTALLER

Positioning the heat pump

The Optima heat pump contains a number of sensitive parts. It is

important that it stands on a flat and solid base, for example, concrete slabs on ground insulation.

The installer should take sound propagation into consideration when

positioning the heat pump. See more information under the heading Technical information/ Sound levels.

Pipe routing between the heat pump and the existing heating system

should be as short as possible.

The heat pump produces condensation and melted ice during the

defrosting process. It is therefore import to lead off this water from the heat pump to a floor drain inside the house.

Note that the drainage pipe must slope towards and run out above the

floor drain. This will keep the drainage pipe free of frost as air is drawn from the boiler room. In those cases the drainage pipe is released into the surface water outdoors, the pipe must be fitted with a heating cable to avoid freezing. A suitable output is 10-20 W/metre. The cable can be connected to terminals in the heat pump. See Connecting the heat pump to the power supply.

The heat pump must be positioned so that air is not prevented from

passing through the air coils. Minimum distance to a wall is 300 mm. Avoid placements that results in the recirculation of cold air. Recirculation reduces the output of the heat pump.

Avoid falling snow and eaves drop. In some cases a protective roof may

be necessary. The roof should then be installed at least 1.5 m above the heat pump to avoid the recirculation of cold air.

The heat pump in general

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 in temperatures below zero degrees Celsius. Water may remain in the pump after testing and this water can then freeze and damage the circulation pumps.

Note

The amount of condensation water can, during days of high humidity, amount to 30-40 litres.

The heat pump in general

FOR THE INSTALLER

Minimum and maximum working temperatures

Maximum working temperatures

The heat pump can work with a maximum return temperature of approximately 48ºC. If the temperature rises above this value the heat pump will stop for reasons of safety. The maximum outgoing temperature from the heat pump is around 55ºC. However, higher temperatures can be obtained when the additional heat source is used.

Minimum working temperatures

The heat pump stops when the outdoor temperature falls below approximately -10ºC or when the return temperature falls below +5ºC. The heat pump restarts automatically when the outdoor temperature rises above approximately -9ºC and the return temperature is above +5ºC. The status lamp on the control panel ﬂ ashes rapidly when the temperature falls below

-10ºC.

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. Consequently, the supplied particle ﬁ lter should always be ﬁ tted on the incoming pipe on the hot side. It should be ﬁ tted as close to the heat pump as possible and be horizontal.

The heat pump’s two methods of control

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.

More information about the control methods can be found in the User section under Control unit Rego 603 / The control unit’s two methods to control the heat pump.

The heat pump’s two operating modes

The Optima heat pump provides for two different operating modes:

- Operating mode A: Heat pump with external electric cassette.

- Operating mode B: The heat pump operates together with a mixed additional heat, for example, an external electric/oilﬁ red boiler.

More information about each operating mode can be found in the User part under Control unit Rego 603/ The control unit’s two operating modes.

The heat pump in general

FOR THE INSTALLER

Note

Only qualiﬁ ed installers may carry out the installation. The installer must follow applicable regulations and recommendations from IVT.

Connect the three-way valve

A three-way valve should be connected in the circuit when using a hot water heater. A description is given to the right how to connect a Honeywell type three-way valve. The three-way valve is an accessory.

Port A:

To the hot

water heater

Port B: To the heating system

Port AB: From heat pump

Filling water in the heating system

The heating system normally has an expansion vessel with a pressure gauge.

1. Open and close the tap between the cold water system and the heating

system in short time inter vals.

2. Read the pressure on the pressure gauge.

3. Vent the system and refill to the correct pressure.

Connecting the heat pump to the heating system

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.

Connect the heat pump outdoors

To avoid vibration transfer between the heat pump and the pipe system we recommend ﬁ tting ﬂ exible hoses at the inlet and outlet of the heat pump. Between the heat pump and the house we recommend 28 mm copper pipe for lengths of less than 20 metres. The pipes must be insulated with a material which cannot absorb moisture, such as Armaﬂ ex. Venting valves must be provided on the pipes. Short outdoor pipes reduce heat losses.

Connect the heat pump indoors

The heat pump can be used for the heating system as well as for the domestic hot water. The manual provides connection proposals that are easy to implement and give economic operation of the heat pump. In addition to these there are more technically complicated alternatives, which unfortunately result in very high installation costs and complex operation.

It is important to realise that air/water heat pumps do not cover the entire heating demand. Below a certain outdoor temperature additional heat must provide the power shortfall. The additional heat may be the existing heat source or a newly installed electric cassette. At outdoor temperatures below -10 ºC the heat pump shuts down completely. A heat pump also gives a slightly lower hot water temperature than the existing boiler or hot water heater.

Note

The Optima heat pump is connected to the heating system in different ways depending on the operating mode.

FOR THE INSTALLER

Connect the Optima heat pump - operating mode A

Application:

The principle for operating mode A is based on a ﬁ xed temperature and additional heat from an electric cassette. The built-in control unit Rego 603 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. Hot water is prioritised and controlled by a sensor T3 (GT3) in the hot water heater. While the heat pump is heating the water in the hot water heater, the heating system is disconnected temporarily through the three-way valve. Radiator operation continues when the hot water heater is hot enough.

Connected sensors:

T1 (GT1) return sensor heating system. T2 (GT2) outdoor sensor. T3 (GT3) production of hot water (accessory). T4 (GT4) when an extra mixing valve is ﬁ tted (accessory). T5 (GT5) inﬂ uence of the room sensor (accessory). T8 (GT8) ﬂ ow temperature from heat pump. T9 (GT9) return temperature into the heat pump.

Connecting the heat pump to the heating system

* Mixed heating system

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

Q Shut of f valve Q Safety valve outlet

Q Contr ol valve with motor, arrows denote

controlled ports

T Temperature sensor

C Electric cassette

E Double-shelled hot water heater

E Oil-ﬁ red boiler

E Heat pump

C Expansion tank

V Filter/Screen

G Pump

G Fan

V Filter valve

V Duration hot water

W Inlet/outlet

Pipe (Arrow denotes dir ection of ﬂ ow)

Crossing pipes

T-piece

Optima with electric cassette and hot water heater

FOR THE INSTALLER

Connect the Optima heat pump - operating mode B

Application:

The principle for operating mode B is based on a ﬁ xed temperature and additional heat from an electric/oil-ﬁ red boiler using a mixing valve. The built-in control unit Rego 603 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/oil-ﬁ red boiler starts automatically and together with the heat pump provides the required temperature. Hot water is prioritised and controlled by a sensor T3 (GT3) in the hot water heater. While the heat pump is heating the water in the hot water heater, the heating system is disconnected temporarily through the three-way valve. If the oil-ﬁ red boiler is in operation it provides the required temperature to the radiator system. Radiator operation from the heat pump continues when the hot water heater is hot enough.

Hot water mode when the heat pump is not operating:

The heat pump stops automatically at outdoor temperatures below approximately -10ºC and cannot then produce hot water. The electric element (accessory) in the hot water heater is then automatically activated by Rego 603 and the hot water heater will thus maintain a high temperature. The temperature is adjustable using the thermostat on the electric element.

Connected sensors:

T1 (GT1) return sensor heating system. T2 (GT2) outdoor sensor. T3 (GT3) production of hot water (accessory). T5 (GT5) inﬂ uence of the room sensor (accessory). T8 (GT8) ﬂ ow temperature from heat pump. T9 (GT9) return temperature into the heat pump.

Connecting the heat pump to the heating system

Optima with oil-ﬁ red boiler and hot water heater

Q Shut of f valve Q Safety valve outlet

Q Contr ol valve with motor, arrows denote

controlled ports

T Temperature sensor

C Electric cassette

E Double-shelled hot water heater

E Oil-ﬁ red boiler

E Heat pump

C Expansion tank

V Filter/Screen

G Pump

G Fan

V Filter valve

V Duration hot water

W Inlet/outlet

Pipe (Arrow denotes dir ection of ﬂ ow)

Crossing pipes

T-piece

FOR THE INSTALLER

Connecting the heat pump to the power supply

Make sure the electricity has been switched off before connecting the heat pump to the mains. Also 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.

Virtually all electrical equipment, including Rego 603, is electrically installed in the separate electric cabinet. The compressor, fan, sensors, pressure switches, etc. are connected to a terminal box in the heat pump. The cable between the terminal box (placed outdoors) and the electric cabinet (placed indoors) is routed according to the diagram External wiring diagram. (Select the diagram according to the operating mode.)

The following sensors are to be connected during installation:

- Heat transfer ﬂ uid out

- Heat transfer ﬂ uid in

- Hot water sensor

- Outdoor sensor

- Return radiator

- Room sensor (accessory)

- Mixing valve sensor, operating mode A (accessory)

Accessories

Softstarter

(Art. no. 200815-1) The compressor can be equipped with a softstarter to reduce the inrush current. The softstar ter is ﬁ tted on the heat pump to the right of the terminal box and connected as in Circuit diagram the Optima heat pump.

Heating cable

A drainage pipe from the heat pump’s drip collector may need to be ﬁ tted with a heating cable. The heating cable is connected on terminals 11-12 in the heat pump’s terminal box. The following lengths are available as accessories: Art. no: 109000 2m / 30W Art. no: 109001 3m / 45W Art. no: 109002 5m / 75W

Safety switch and earth-fault breaker

Safety switch

All heat pumps must be preceded by a safety switch. This means it should be possible to disconnect the entire electrical circuit if necessary.

Earth-fault breaker

If the heat pump is to be connected across an earth-fault breaker then a separate earth-fault breaker for the heat pump is recommended . Comply with applicable regulations.

Warning

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

The terminal box is positioned on the heat pump’s left-hand side plate.

The electric cabinet is placed indoors. Shown here without the contact guard.

Connecting the heat pump to the power supply

FOR THE INSTALLER

Assembly drawing, electric cabinet

Connecting the heat pump to the power supply

F1: Miniature circuit-breaker operation

CK1: Contactor compressor

CK2: Contactor fan

MB1: Motor cut-out compressor

MB2: Motor circ. fan switch

R1: Relay defr osting

AFM: Defrosting module

(HR): Space for help relay for additional heat

Front

Assembly plate

Sensor card

Terminal

card

X01 Terminal rail

Terminal card

FOR THE INSTALLER

Circuit diagram the Optima heat pump

Connecting the heat pump to the power supply

Terminals in electric cabinet

Terminal in terminal box heat pump

CK1: Contactor compressor

CK2: Contactor fan

MB1: Motor cut-out compressor

MB2: Motor circ. fan switch

R1: Relay defrosting

F1: Miniature circuit-breaker heat pump

AFM: Defrosting module

1) Softstarter, accessor y

2) Heating cable draining pipe,

accessory

Low pressure switch

High pressure switch

Condenser temp

Heat transfer ﬂ uid in

Heat transfer ﬂ uid out

Hot gas

SENSOR CARD INTERNAL COUPLINGS

TERMINAL CARD

Four-way valve

Fan

Compressor

max

Incoming supply

3x400V+N+PE

Three-way valve

Crankcase heater

FOR THE INSTALLER

External terminal diagram heat pump - operating mode A

Connecting the heat pump to the power supply

Room

Mixing valve

Hot water

Out

Return radiator

Mixing

valve

TERMINAL

CARD

Wiring to the hot water heater

(starting) is connected to

relay terminals 11 and 14.

NOTE! HR is not included in

the delivery.

Heat transfer ﬂ uid in

Heat transfer ﬂ uid out

ELECTRIC CABINET

Inc. Supply

5G2,5 3x400V

Three-way valve

HEAT PUMP

TERMINAL CARD

ELECTRIC CABINET

FOR THE INSTALLER

External terminal diagram heat pump - operating mode B

Connecting the heat pump to the power supply

Room

Hot water

Out

Return radiator

Mixing

valve

TERMINAL

CARD

NOTE! HR is not included in

the delivery.

Heat transfer ﬂ uid in

Heat transfer ﬂ uid out

ELECTRIC CABINET

Inc. Supply

5G2,5 3x400V

Three-way valve VXV

HEAT PUMP

TERMINAL CARD

230V at -10°C

Electric element

in WH

Cut the cable to the oil-

ﬁ red boiler/electric boiler

and connect to relay

terminals 11 and 14.

FOR THE INSTALLER

External connections on the heat pump - operating mode A

Power supply: Connect to terminals L1, L2, L3, N and PE. An alarm

triggers if phases are connected wrongly.

Mixing valve on the heating circuit: When a second heat curve with

mixing valve is used, the mixing valve is connected to terminal SV1.

P1, external main pump in the heating system: Must always be

connected. Connect to terminal P1.

P2, heat carrier pump: Must always be connected. Connect to

terminal P2.

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): Connected if the heat pump is to

produce hot water. Connect to terminal GT3 X.

Mixing valve sensor T4 (GT4): Connected if the mixing valve for the

second heat curve is used. Connect to terminal GT4.

Room sensor T5 (GT5): Connected if room sensor influence is

required. Connect to terminal block GT5 on the terminal card. The alarm lamp in the room sensor is connected to the terminal block ALARM LED.

Connection of electric cassette additional heat

- operating mode A

If the additional heat is an electric cassette it is connected in the following way: Fit the coil on help relay HR to N and L on contact T2. The electric cassette’s on/off is connected to the help relay terminals 11 and 14. Concerns both the contactor and the telecontrol function in the electric cassette. 230 V is taken from T2L. Connection capacity is set at 2/3 (factory setting) in the 5.2 menu display .

The strap between L3 and ELB should be removed when an alarm function for the electric cassette’s overheat protection is required. A strap is instead ﬁ tted from the overheat protection to ELB. NOTE! Must be phase L3.

Connecting the heat pump to the power supply

Return radiator

Out

Hot water

Mixing valve

Room

Terminal card

Alarm lamp, room

sensor

Terminal card 230V

Three-way valve

VXV

Mixing valve

Wiring to the hot water heater, (starting) is connected to relay terminals 11 and 14.

NOTE! HR is not included in the delivery.

FOR THE INSTALLER

External connections on the heat pump - operating mode B

Power supply: Connect to terminals L1, L2, L3, N and PE. An alarm

triggers if phases are connected incorrectly.

Three-way valve: Connected if the heat pump is to produce hot water.

Connect to terminals 11, 12 and 13.

Mixing valve for oil-fired boiler: When a mixing valve is required for

the electric/oil-fired boiler then it is connected to terminal SV1.

P1, external main pump in the heating system: Must always be

connected. Connect to terminal P1.

P2, heat carrier pump: Must always be connected. Connect to

terminal P2.

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): Connected if the heat pump is to

produce hot water. Connect to terminal GT3 X.

Room sensor T5 (GT5): Connected if room sensor influence is

required. Connect to terminal block GT5 on the terminal card. The alarm lamp in the room sensor is connected to the terminal block ALARM LED.

Connection of mixed additional heat - operating mode B

When the additional heat is an electric/oil-ﬁ red boiler with a mixing valve the wiring to the operating circuit is connected to terminals N and L on contact T1 via a help relay HR. The heat pump stops automatically at outdoor temperatures below -10ºC and cannot then produce hot water. Both the T1 and T2 outputs are activated instead. T1 starts the electric/oilﬁ red boiler and T2 makes the contact CK for a possible hot water heater.

Connecting the heat pump to the power supply

Return radiator

Out

Hot water

Room

Terminal card

Alarm lamp, room

sensor

Terminal card 230V

Three-way valve

Mixing valve

NOTE! HR is not included in the delivery.

230V at -10°C):

Electric element

in WH

Cut the cable to the oil-ﬁ red boiler/electric boiler and connect to relay terminals 11 and 14.

FOR THE INSTALLER

Connecting the heat pump to the power supply

Connecting the general alarm, external input and load monitor

General alarm

The general alarm is a lamp that lights irrespective of the alarm that has tripped. If a general alarm is required on the heat pump it should be connected as shown 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 Rego

634. These functions are available from menu 1.13 (Remote control heat)

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 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.

Terminal card for external connections

FOR THE INSTALLER

Installer and service menu (I/S)

Warning

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

(10 sec)

Installer and service menu

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 heat pump automatically returns to Customer level 1. The installer level also includes Customer levels 1 and 2. Note that the menu displays are also linked to the selected operating mode. This means you will never see windows that concern anything else but the selected operating mode.

How to use the control panel

Start the heat pump with the help of the control panel’s function keys and f applicable menu selections. Here follows an example of how to use the control panel. The example shows how you move to menu 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 of the manual.

1. Press the menu button for approximately ten seconds until Access =

SERVICE is shown on the menu display. Now press the Menu button.

2. Menu Indoor temperature settings (menu 1) is shown.

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

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

4. Menu Select operating mode A B (menu 5.1) is shown.

5. Turn the menu dial clockwise until you reach the menu Connected

extra sensor in op. (menu 5.13). Now press the Select button.

6. Menu Extra sensor(s) is shown. Confirm the extra sensors that you

have connected by pressing the Confirm button.

7. The text Confirming… is briefly shown in the menu display. This

means your setting is being registered in the heat pump.

8. When the setting has been registered the previous menu is shown.

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

Main menu Indoor temperature settings 1 Return Select

Main menu Commiss./Service for installer 5 Return Select

Commiss./Service Select operating mode A B 5.1 Return Select

Commiss./Service Connected extra sensor in op. 5.13 Return Select

Extra sensor(s)

GT4 GT5 Return ConÞ rm

Extra sensor(s)

ConÞ rming...

Extra sensor(s)

GT4 GT5 Return ConÞ rm

Rego603 I/S

040216 16:08:15 Tu Heat Info Menu

FOR THE INSTALLER

Common and speciﬁ c menu displays for operating modes A and B

Optima heat pump can, as mentioned in the User section under heading Control unit Rego 603, be set for different operating modes depending

on the operating conditions. Despite the two different operating modes (operating mode A and operating mode B) differing signiﬁ cantly from each other, they do have a number of common menus. Here follows a list of the common menus:

Run the heat pump manually

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 (menu 5.3).

Fast restart of heat pump

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.

Commissioning the heat pump

Before commissioning the heat pump, the heating system must be ﬁ lled up and completely vented. Check that there are no leaks.

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

2. Start the heat pump.

3. If the heat pump stops during test operations please refer to the User section and heading What to do if a fault occurs.

Note

Further impor tant information on Rego 603 can be found in the User section of this manual. Therefore read also the User section before commissioning is started.

Commissioning the heat pump

Commiss./Service Manual operation of all functions 5.3 Return Select

Commiss./Service Fast restart of heat pump 5.6 Return Select

FOR THE INSTALLER

Selecting external controls

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 Rego 603 is short circuited you can make one of the following choices: 0: No effect (factor y 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.

Choice of language

Select the language you would like for the menu window texts. On delivery the language is set to Swedish (Svenska).

Display of Rego 603 version number

Select menu window 5.12 to see the version number of the control unit Rego 603.

Conﬁ rm extra sensors on the heat pump

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.

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 DHW peak interval timer

The function shows when the next hot water peak will be carried out. If the timer shows zero the hot water peak will be activated the next time there is a hot water requirement. The menu display is only shown in operating mode A.

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.

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 heat (menu 1.13). See the User section and Extra functions (Customer level 2).

Commissioning the heat pump

Commiss./Service Select external controls 5.7 Return Select

Commiss./Service Selection of language menu 5.8 Return Select

Commiss./Service Display software version number 5.12 Return Select

Commiss./Service Connected extra sensor in op. 5.13 Return Select

Timer readings Read DHW peak timer 6.1 Return Select

Timer readings Read add. heat timer 6.2 Return Select

FOR THE INSTALLER

Read the alarm timer

The function gives you information about an alarm. If the heat pump has stopped, a countdown starts from 60 minutes (3600 seconds). When this time has elapsed and the alarm has not been rectiﬁ ed, the additional heat starts so that the house will not be cold and to produce hot water.

Read the start delay

The function shows the time remaining until the heat pump starts again after a previous stoppage. The heat pump will not start when there is no requirement.

Read delayed mixing valve opening

The function shows the time remaining before the mixing valve opens after the heat pump has started. The menu display is only shown for operating mode B.

Read delayed oil-ﬁ red boiler stop

The function shows the time remaining before the electric/oil-ﬁ red boiler stops after there is no longer a need of additional heat. When the boiler has stopped producing heat, the additional heat timer is restarted. The menu display is only shown for operating mode B.

Setting the additional heat timer

The function gives you the possibility to set the time that should elapse before the additional heat may start if the heat pump cannot produce the heat on its own. On delivery the additional heat timer is set to 60 minutes. 60 minutes is recommended when electricity is used for additional heat, and 120 to 180 minutes is recommended when an oil-ﬁ red boiler is used.

Return to factory settings

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

12. If you are in Customer level 1 or 2 when you select Return to factory settings, only the settings made on Customer levels 1 and 2 are 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.

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 since in this mode you can easily locate 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.

Timer readings Read alarm timer 6.3 Return Select

Timer readings Read start delay 6.4 Return Select

Timer readings Read delayed mixing valve opening 6.5 Return Select

Timer readings Read delayed OP stop 6.6 Return Select

Additional heat Setting additional heat timer 8.1 Return Select

Main menu Return to factory settings 12 Return Select

Commissioning the heat pump

Commiss./Service Manual operation of all functions 5.3 Return Select

FOR THE INSTALLER

Commissioning the heat pump - operating mode A

Start the heat pump

1. Connect mains to the heat pump and press the ON/OFF switch on the control panel. Control unit Rego 603 automatically measures the phase sequence so the fan does not run in the wrong direction. The air should be blown upwards through the fan. If the phase sequence is wrong the alarm “Phase sequence error” will trip. Read more about the alarm in the User section 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.

3. Set Temp. incr. / decr. temporarily to the 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 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. When defrosting it bubbles continuously in the sight glass. This is perfectly normal. Bubbles present when the heat pump is running are a fault symptom. They are probably due to insufficient refrigerant. Read more about the fault symptom in the User section under the heading What to do if a fault occurs.

5. Make the necessary settings on the control panel. See below.

Menu displays you must always check

On delivery the heat pump is set for operating mode A, which means most settings have been made. The only essential settings you need to make are to conﬁ rm the extra sensors in the menu Connected extra sensor in op. (menu 5.13) and choose the output of the electric cassette in the menu Select conn capacity electr. cass. (menu 5.2).

Press the power

switch ON/OFF

Check the sight glass

Rego 603 I/S

031020 12.00:00 Tu

Heat Info Menu

Commiss./Service Fast restart of heat pump 5.6 Return Select

Note

The factory settings are listed under the heading Technical information/

The heat pump’s factory settings.

Commissioning the heat pump

FOR THE INSTALLER

1. Check that operating mode A is set.

2. Confirm connected external sensors. If T3 (GT3), T4 (GT4) or T5 (GT5) have been connected, you must confirm these so the control unit knows they are installed. The displays presented by the sensors are only shown if the sensors have been confirmed.

3. 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 at 2/3.

Menu displays you might need to adjust or check

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

2. Set the neutral zone for the mixing valve on the second heat curve. In the neutral zone the mixing valve receives no signal to open or close. Applies to sensor T4 (GT4) only.

3. Set the maximum temperature in the mixing valve circuit. You can, for example, set a maximum temperature for the floor heating system. On delivery the value is set to 60ºC. Applies to sensor T4 (GT4) only.

4. 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 heater. Set too high and the heat pump can shut down on a high return or high pressure switch. Applies to sensor T3 (GT3) only. A higher setting than 45ºC can cause problems.

5. Set the hysteresis for the hot water temperature. The function measures below and above the value set in menu 2.3. Applies to sensor T3 (GT3) only. Less than 5ºC should be avoided.

6. 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.

7. Read how much of the additional heat (per cent) has been utilized.

Commiss./Service Select operating mode A B 5.1 Return Select

Commiss./Service Connected extra sensor in op 5.13 Return Select

Commiss./Service Select conn capacity electr. cass. 5.2 Return Select

Temperature settings Heat curve hysteresis 1.4 Return Select

Temperature settings Mixing valve curve neutral zone 1.8 Return Select

Temperature settings Mixing valve curve max at GT4 1.9 Return Select

Hot water settings Setting of hot water temperature 2.3 Return Select

Setting of DHW hysteresis 2.4 Return Select

Commiss./Service Select function add.heat yes/no 5.5 Return Select

Additional heat Show connected elec. capac. in op. 8.5 Return Select

Commissioning the heat pump

Hot water settings

FOR THE INSTALLER

Commissioning the heat pump - operating mode B

Start the heat pump

2. Activate the Installer/Service menu by pressing the Menu button until the text Access = SERVICE is shown on the menu display.

3. Set the heat pump for operating mode B. See more information below.

4. Set Temp. incr. / decr. temporarily to the 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.

5. 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. When defrosting it bubbles continuously in the sight glass. Bubbles present when the heat pump is running are a fault symptom. They are probably due to insufficient refrigerant. Read more about the fault symptom in the User manual under the heading What to do if a fault occurs.

6. Check that the operating status of the heat pump corresponds to the information supplied in the Info menu.

7. Make the necessary settings on the control panel. See below.

Menu displays you must always check

1. Set the heat pump for operating mode B. The control unit Rego 603 needs to save the settings required for operation with electric/oil-fired boiler and mixing valve.

2. Confirm connected external sensors. If T3 (GT3) or T5 (GT5) have been connected, you must confirm these so the control unit knows they are installed. The displays presented by the sensors are only shown if the sensors have been confirmed.

Press the power switch ON/OFF

Check the sight glass

Rego 603 I/S

031020 12.00:00 Tu Heat Info Menu

Commiss./Service Fast restart of heat pump 5.6 Return Select

Commiss./Service Select operating mode A B 5.1 Return Select

Commissioning the heat pump

Commiss./Service Connected extra sensor in op. 5.13 Return Select

FOR THE INSTALLER

3. Set the running time on the mixing valve motor if using a mixing valve on the electric/oil-fired boiler. The running time is the time it takes the mixing valve to move from the fully closed position to the fully open position. The running time is usually punched on the mixing valve motor.

Menu displays you might need to adjust or check

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

2. 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 heater. Set too high and the heat pump can shut down on a high return or high pressure switch. Applies to sensor T3 (GT3) only. A higher setting than 45ºC can cause problems.

3. Set the hysteresis for the hot water temperature. The function measures below and above the value set in menu 2.3. Applies to sensor T3 (GT3) only. Less than 5ºC should be avoided.

4. Change the time delay for the mixing valve. The opening of the mixing valve can be delayed to after the boiler has started. This is to prevent cold water from being mixed into the system before the boiler is hot.

5. Change the time delay for stop of electric/oil-fired boiler. The function is used to stop the boiler from starting and stopping all the time. For reasons of safety there is a time delay from when the mixing valve has not received a signal to open until the boiler may stop completely. When the boiler has stopped completely, the additional heat timer must count down to zero again.

6. Here you set the neutral zone for the additional heat mixing valve SV1. In the neutral zone the mixing valve does not receive an open or close signal.

7. Ramp time open and close is the time the mixing valve takes to go from closed to fully open and from fully open to closed. In some cases the ramp time open (menu 8.3.4) may need to be adjusted to eliminate overexciting the system.

8. Check whether the mixing valve to the oil-fired boiler opens or closes.

Mixed add. heat Setting of SV1 open/close 8.3.6 Return Select

Temperature settings Heat curve hysteresis 1.4 Return Select

Hot water settings Setting of hot water temperature 2.3 Return Select

Hot water settings Setting of DHW hysteresis 2.4 Return Select

Additional heat Show mixing valve opening 8.6 Return Select

Mixed add. heat Time delay for mix. valve SV1 8.3.1 Return Select

Mixed add. heat Time delay for stop boiler 8.3.2 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

Commissioning the heat pump

Mixed add. heat Mixing valve curve neutral zone 8.3.3 Return Select

FOR THE INSTALLER

Important points to check after commissioning

Check that the fan runs in the right direction. The air should be blown upwards through the fan.

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 pumps have a speed selector switch. This must be set correctly for the pressure drop in the system. A recommended temperature difference across the heat pump on the hot side is between 5-10ºC. The nominal ﬂ ows provided in Technical information show a difference of 7ºC in operating mode +7/45ºC. Check this by going to the menu display 3 and reading the sensors T9 (GT9) and T8 (GT8). When commissioning is carried out at a low outdoor temperature (below 0ºC) the temperature difference should be between 5ºC and 7ºC.

It is also important that the ﬂ ow in the heating system exceeds the ﬂ ow across 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 trip for high return temperature. The ﬂ ow through the heating system should be sufﬁ cient to keep the whole radiator warm and thereby increase the heat emitting surface. This means that the ﬂ ow temperature from the heat pump is kept low.

After testing, vent the system again and top up with cold water if necessary.

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. If there are bubbles present all the time, this is a fault symptom which is probably due to insufﬁ cient refrigerant.

If the sight glass indicates green this means there is no moisture in the system. If it is yellow there is moisture in the system.

Defrosting method

The principle of defrosting in the heat pump is known as hot gas defrosting. During defrosting, the ﬂ ow in the refrigerant circuit is reversed by means of an electrically-controlled four-way valve. The compressed gas from the compressor is fed into the top of the evaporator, causing the ice on the outside to melt. During this process, the water in the radiators is cooled slightly. The defrosting process is controlled by a defrosting module. The module measures the temperature of the refrigerant with the help of a sensor. Hot gas is sprayed into the evaporator and the sensor ensures that the process functions correctly. The time required for defrosting depends on the amount of ice and the outdoor temperature. The sequence is explained below:

Sight glass

Defrosting method

FOR THE INSTALLER

Defrosting starts

The defrosting process starts when the time for the interval has elapsed (factory setting 60 minutes) and the sensor’s temperature has been below –7ºC steadily for three minutes.

Defrosting stops

The defrosting process stops when the sensor’s temperature exceeds +10ºC or when the maximum time for defrosting has been exceeded. The maximum defrost time is set to 10 minutes at the factory.

Forced defrosting

Shorting pins D and F on the defrosting module gives the following function: Defrosting starts when the sensor’s temperature is below –5ºC, and stops when the temperature is +10ºC. When the sensor’s temperature is above –5ºC defrosting takes place for 5 seconds.

Adjusting the defrosting

The defrosting module is located in the electric cabinet and you can change the interval and maximum time for defrosting if necessary.

Pre-delivery setting, equivalent

to 60 minute intervals and 10

minutes’ maximum time.

Setting combinations for the interval and maximum time

The heat pump must be switched off and on once using the main switch when changes have been made to the defrosting module. The restart ensures the new settings come into force.

Switch No.: Interval Switch No.: Max. time

1 2 3 4 5 6

Off Of f Off 30 min Of f Of f Off 10 min

On Off Off 40 min On Off Off 15 min

Off On Of f 50 min Off On Off 20 min

On On Off 60 min On On Off 30 min

Off Of f On 90 min Of f Of f On 40 min

On Off On 120 min On Off On 50 min

Off On On 150 min Off On On 60 min

On On On 180 min On On On 80 min

Defrosting method

Note

Start temperature:

Set to: -7ºC at the factory.

Stop temperature:

Set to: +10ºC at the factory.

INDEX

Heat pump

Sound pressure level Lp - ear (dBA)

Optima 1000

Optima 1300 61

Sound levels

The table describes the sound levels stated as sound pressure level.

Sound pressure level:

Sound pressure level is deﬁ ned as the sound level, which at an ear level of 1.8 metres, is perceived one metre from the heat pump. Measured in a sound measurement room without echo at an outdoor temperature of +7ºC and 50ºC ﬂ ow temperature.

Example:

When the heat pump is installed outside with free sound propagation the sound level drops by 6dBa with each doubling of distance.

Menu Setting Factory

setting

2.4 DHW hysteresis 5º

4.1 Clock setting HP not active

4.1.1 Setting level HP 0º

4.3 Clock setting DHW not active

5.1 Op. mode selection A

5.2 Conn. cap. electric cassette 2/3

5.4 Additional heat only off

5.5 Additional heat yes/no yes

5.7 External controls 0

5.11 Fan operation options off

8.1 Additional heat timer 60 minutes

8.3.1 Time delay SV1 30 minutes

8.3.2 Time delay stop boiler 60 minutes

8.3.3 Mix. valve curve neutral zone 3ºC

8.3.4 Setting of ramp time open 20 minutes

8.3.5 Setting of ramp time close 3 minutes

8.3.6 Setting of SV1 runtime 1 minute

Menu Setting Factory

setting

1.1 Temp. incr. / decr. 4

1.2 Temp. ﬁ ne-tune 0º

1.3 Heat curve adjustm. 0º

1.4 Heat curve hysteresis 5º

1.5 Mix. valve incr/decr 4

1.6 Mix. valve ﬁ ne-tune 0º

1.7 Mix. valve curve adjustm. 0º

1.8 Mix. valve curve neutral zone 3º

1.9 Mix. valve curve max. temp. 60º

1.10 Room temperature 20º

1.11 Room sensor inﬂ uence 5

1.12 Holiday function 0 days

1.13 Remote control temperature not active

1.14 Summer disconnection 18º

1.17 Return thermostat hysteresis 5º

2.1 Extra hot water 0 hours

2.2 DHW peak interval not active

2.3 DHW temperature 45º

Technical information

Optima 1000

Distance Lp - ear (dBa)

1 metre 53

2 metres 47

4 metres 41

8 metres 35

Technical information

The heat pump’s factory settings

The table shows the factory settings of all the settings that can be changed by the installer.

INDEX

Technical information

Sensor table

The table shows all sensor resistance at different temperatures.

Temperature

(ºC)

kΩ

-40 154,300

-35 111,700

-30 81,700

-25 60,400

-20 45,100

-15 33,950

-10 25,800

-5 19,770

0 15,280

5 11,900

10 9,330

15 7,370

20 5,870

25 4,700

30 3,790

35 3,070

40 2,510

45 2,055

50 1,696

55 1,405

60 1,170

65 0,980

70 0,824

75 0,696

80 0,590

85 0,503

90 0,430

Output data at +7/35º and +7/50º are stated according to the European standard EN 255.

Model IVT Optima 1000 1300

Emitted/Supplied output at +7/35º kW 10,5 / 2,7 13,7 / 3,6

Emitted/Supplied output at +7/50º kW 9,6 / 3,1 13,3 / 4,2

Nominal ﬂ ow heat transfer ﬂ uid l/s 0,34 0,44

Internal pressure drop heat transfer ﬂ uid

kPa 4 5

Fan speed, no. of steps 1

Air ﬂ ow m³/h 4000 5500

Electrical consumption fan A 0.4A (400V N3) 0.7A (400V N3)

Electrical supply 400V, N3-phase or

Fuse size AT 10 16

Compressor Piston

Highest outgoing heating medium temperature

ºC 55

Refrigerant quantity (R407C) kg 3,2 3,3

HTF connection, clamping ring CU 28

Rec. circulation pump P2 Wilo Star RS 25/6

Defrosting system Hot gas with four-way valve

Dimensions (WxDxH) mm 920x704x1587

Weight kg 155 160

Colour Champagne

Outer casing Galvanised enamelled plate

INDEX

Glossary

Additional heat

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 is connected. Together the heat pump and additional heat guarantee the right temperature in the house. Examples of additional heat are an electric cassette or an external electric or oil-ﬁ red boiler.

Alarm

The control unit switches off the heat pump and gives alarms to protect the heat pump when something goes wrong. This may, for example, be a sensor that indicates a fault.

Cold side

The cold side designates the part of the system that collects heat from the air and emits this to the refrigerant.

Compressor

The compressor increases the pressure of the refrigerant. The refrigerant, which is in gas form, is led from the evaporator to the compressor. The pressure of the refrigerant increases in the compressor and the temperature of the vapour rises from 0ºC to approximately +100ºC.

Condenser

The condenser is the heat pump’s heat emitting part. From here heat is transferred to the house’s heating and hot water systems. 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.

Control unit

The control unit Rego 603 is the brains of the heat pump. It 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 of the heat pump are damaged.

Defrosting

Ice forms on the evaporator at outdoor temperatures below +5ºC. When ice forms to an extent that it obstructs the air ﬂ ow through the evaporator automatic defrosting starts.

Electric cassette

The electric cassette is an external energy source connected to provide extra output in cold weather, when large amounts of water are drawn off and with hot water peaks.

Evaporator

The refrigerant meets the outdoor air in the evaporator. At this stage the refrigerant is in a ﬂ uid state and is at approximately -10ºC. The refrigerant starts to boil due to the compressor maintaining a low pressure in the evaporator.

Expansion valve

The refrigerant pressure is lowered in the expansion valve.

Fan

The fan is located in the top of Optima. This draws air through the evaporator. Heat is taken from the air and is transferred to the refrigerant.

Fuse

There are fuses in the heat pump to protect from overloading. The fuses trip when the heat pump is in danger. You can read what has caused the fuses to trip on the control panel.

Heat carrier pump

The heat carrier pump is located on the hot side and ensures that the heating water circulates through the heat pump and the hot water heater.

Heat curve

You use the heat curve to help set the indoor temperature you would like. Raising or lowering the curve slope in the menus Temp. incr. / decr. and Temp. ﬁ ne-tune inﬂ uences the heat pump’s production of heat.

Heating system

The heating system comprises pipes, valves and pumps for the water circulated to the radiators and ﬂ oor coils.

Hot side

The hot side is a common denomination for all the components, valves, pipes, etc. that participate in the transport of hot water and heating water to radiators and ﬂ oor coils. In the heat pump it is the condenser that is the heat emitting component. From here heat is transferred to the house’s heating and hot water systems.

Hot water / Heating water

Hot water is the water coming out of the taps and the shower. Heating water is the water circulating through the radiators and heating coils.

Glossary

INDEX

Hot water peak

On delivery the heat pump is set for recurring hot water peaks. This means that the water temperature in the hot water heater is raised at preset time intervals.

Mixing valve

When using a heating system with both radiators and ﬂ oor heating you should connect a mixing valve to lower the temperature of the ﬂ oor heating system. The mixing valve is a valve that mixes cold and hot water to the correct temperature.

Operating modes

Outdoor sensor

An outdoor sensor is a sensor ﬁ tted to the outside wall of the house. The sensor sends signals to the control unit in the heat pump. The signals report the outside temperature so that the heat pump can adapt 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 give off more heat.

Particle ﬁ lter

It is the particle ﬁ lter that ensures no par ticles or dirt enter the heat pump. This can become clogged with dirt over time and must be cleaned. The par ticle ﬁ lter is located on the “the hot side”.

Pressure switch

Pressure switches (pressostats) are located on the system’s high and low pressure sides to protect the heat pump from forbidden pressure levels. There is also a sensor that stops the heat pump at outdoor temperatures below -10ºC. When the outdoor temperature is below

-10ºC for more than 30 minutes the heat pump stops and switches to additional heat operation only.

Radiator

The radiators are carefully placed in the building to provide the best possible heat.

Refrigerant

The heat pump consists of four main parts: evaporator, condenser, expansion valve and compressor. These four

main parts are linked in a closed circuit. A refrigerant circulates in the system, which in some parts of the circuit is in a liquid state and in other parts in a gas state. It is the refrigerant that transfers the heat in the heat pump and it is the relation between the boiling point and pressure of the refrigerant that is the secret of the heat pump.

Refrigerant circuit

The pipe system in the heat pump where the refrigerant circulates.

Return temperature

Return temperature designates the temperature of the heating water when it returns from the radiators and ﬂ oor coils. For technical reasons the return temperature must not exceed +48ºC.

Room sensor

A room sensor is a sensor that is installed centrally in the house. It is connected to the heat pump and gives signals to the control unit about the heating conditions in the house. The signals affect the control unit and ensure the heat pump gives the best possible energy savings.

Sensors

The sensors measure the temperature at different locations in and outside the heat pump. The sensors play an important par t in daily operations. It may, for example, adjust the heating production so that the pump does not become overheated.

Sight glass

The sight glass is used to check the level in the refrigerant circuit. Bubbles can occur during the start and stop of the heat pump and when defrosting, but bubbles must not be present all the time.

Three-way valve

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

Glossary

INDEX

Index

Adapting the heat curve .................................. 22, 23

Additional heat ......................................................... 9

Additional heat status ............................................12

Alarm....................................................................... 31

Alarm status............................................................ 12

Basic functions .......................................................14

Boiling point ............................................................. 6

Breaking the curve ................................................ 22

Buttons.................................................................... 12

Circlip ...................................................................... 29

Clock setting........................................................... 24

Coil ﬁ ns .....................................................................8

Cold weather........................................................... 16

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

Compressor ..........................................................6, 7

Compressor temperature ...................................... 35

Condenser............................................................. 6, 7

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

Control unit............................................................... 9

Controls................................................................... 11

Curve slope............................................................. 16

Customer level 1 .................................................... 14

Customer level 2 .................................................... 21

Date .........................................................................26

Defrosting ................................................................. 9

Defrosting alarm ....................................................34

Dimmed menu display........................................... 31

Drainage hole ......................................................... 28

Drying ﬁ lter .............................................................. 7

Electric cassette .....................................................35

Electric cabinet......................................................... 8

Electrical malfunction............................................ 31

Evaporator ...................................................... 6, 7, 29

Expansion valve.................................................... 6, 7

Extra functions ....................................................... 21

Extra heat curve with mixing valve ..................... 23

Extra hot water................................................. 14, 18

Factory setting .......................................................27

Fan............................................................................. 8

Fuse ......................................................................... 31

Glossary .................................................................. 66

Heat carrier pump.................................................. 33

Heat curve .............................................................. 15

Heat distribution system ......................................... 7

Temperature setting ..............................................22

Heating water ...........................................................9

Holiday function ................................................... 22

Hot water heater....................................................... 9

Hot water peak .......................................................24

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

Hot water status ..................................................... 12

Indication ................................................................12

Initial menu............................................................. 13

Inspection hatch..................................................... 28

List of all alarms .....................................................32

Logging of alarms ..................................................27

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

Menu button ........................................................... 12

Menu dial .......................................................... 12, 13

Menu display .................................................... 12, 13

Menu overview................................................. 14, 21

Miniature circuit-breaker .................................. 8, 31

Mixing valve ...........................................................23

Motor cut-out.......................................................... 34

Non-return valve ...................................................... 7

Operating modes.................................................... 10

Operating status..................................................... 12

Operating times...................................................... 25

Outdoor temperature............................................. 16

INDEX

Index

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

Phase incorrect ...................................................... 36

Power failure........................................................... 35

Power switch .......................................................... 12

Pressure switch........................................................ 7

Refrigerant ................................................................ 7

Rego 603.................................................................... 9

Remote control ....................................................... 22

Return temperature ............................................... 15

Return to factor y settings ..................................... 27

Room sensor..................................................... 18, 20

Room sensor inﬂ uence .......................................... 22

Room temperature ................................................. 18

Savings ....................................................................30

Screen...................................................................... 29

Sealing cap.............................................................. 29

Sensor...................................................................... 20

Sensor fault ............................................................. 34

Set clock.................................................................. 26

Sight glass................................................................. 7

Suction accumulator ................................................7

Summer disconnection ........................................ 22

Temperature readings ........................................... 20

Temperature sensor............................................... 20

Three-way valve........................................................ 9

Time ........................................................................ 26

Warm weather........................................................ 17

Working temperature ............................................ 42

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