Hydrobox

EHSC series EHSD series EHPX series

ERSC series ERSD series

INSTALLATION MANUAL

FOR INSTALLER

For safe and correct use, read this manual and the outdoor unit installation manual thoroughly before installing the hydrobox. English is the original language. The other language versions are translations of the original.

INSTALLATIONSHANDBUCH

FÜR INSTALLATEURE

Aus Sicherheitsgründen und zur richtigen Verwendung vor der Installation der Hydrobox die vorliegende Bedienungsanleitung und die Installationsanleitung der Außeneinheit gründlich durchlesen. Die Originalsprache ist Englisch. Die anderen Sprachversionen sind vom Original übersetzt.

MANUEL D’INSTALLATION

POUR L’INSTALLATEUR

Pour une utilisation correcte et sûre, lisez soigneusement ce manuel et le manuel d’installation de l’unité extérieure avant d’installer l’ECODAN hydrobox. L’anglais est la langue originale. Les versions fournies dans d’autres langues sont des traductions de l’original.

INSTALLATIEHANDLEIDING

VOOR DE INSTALLATEUR

Lees voor een veilig en juist gebruik deze handleiding en de installatiehandleiding van de buiten-unit aandachtig door voordat u met de installatie van de hydrobox begint. Engels is de oorspronkelijke taal. De andere taalversies zijn vertalingen van het origineel.

MANUAL DE INSTALACIÓN

PARA EL INSTALADOR

Para un uso correcto y seguro, lea detalladamente este manual y el manual de instalación de la unidad exterior antes de instalar la Hydrobox. El idioma original del documento es el inglés. Las versiones en los demás idiomas son traducciones del original.

MANUALE DI INSTALLAZIONE

PER L’INSTALLATORE

Per un utilizzo sicuro e corretto, prima di installare l’Hydrobox leggere attentamente questo manuale e quello di installazione dell’unità esterna. Il testo originale è redatto in lingua inglese. Le altre versioni linguistiche rappresentano traduzioni dell’originale.

MANUAL DE INSTALAÇÃO

PARA O INSTALADOR

Para uma utilização segura e correcta, leia este manual e o manual de instalação da unidade interior antes de instalar o permutador de calor. O idioma original é o inglês. As versões em outros idiomas são traduções do idioma original.

INSTALLATIONSMANUAL

TIL INSTALLATØREN

Af hensyn til sikker og korrekt brug skal denne vejledning og vejledningen til udendørsenheden læses omhyggeligt, inden hydroboxenheden installeres. Engelsk er det oprindelige sprog. De andre sprogversioner er oversættelser af originalen.

INSTALLATIONSMANUAL

FÖR INSTALLATÖREN

För säker och korrekt användning, läs denna manual och utomhusenhetens installationsmanual innan du installerar hydroboxen. Engelska är originalspråket. De övriga språkversionerna är översättningar av originalet.

INSTALLERINGSHÅNDBOK

FOR MONTØREN

For å sikre en trygg og riktig bruk skal du lese denne håndboken og installeringshåndboken for utendørsenheten grundig før du monterer hydroboksen. Engelsk er originalspråket. De andre språkversjonene er oversettelser av originalen.

ASENNUSOPAS

ASENTAJALLE

Lue turvallista ja asianmukaista käyttöä varten tämä opas ja ulkoyksikön asennusopas huolellisesti ennen hydroboxin asentamista. Alkuperäiskieli on englanti. Muut kieliversiot ovat alkuperäisen käännöksiä.

Руководство по установке

ДЛЯ МОНТАЖНИКОВ

Для безопасного и правильного использования внимательно прочитайте данное руководство и руководство по установке наружного блока перед установкой гидромодуля. Оригинальная версия на английском языке, другие - перевод с оригинала.

PŘÍRUČKA PRO INSTALACI

PRO TECHNIKY PROVÁDĚJÍCÍ INSTALACI

Z bezpečnostních důvodů a pro správné použití zásobníkového modulu si před jeho instalací důkladně prostudujte Návod k obsluze a také Příručku pro instalaci venkovní jednotky. Jazyk originálu je angličtina. Jiné jazykové verze jsou překlady z originálu.

INSTRUKCJA MONTAŻU

DLA INSTALATORA

Należy dokładnie zapoznać się z niniejszą instrukcją obsługi i instrukcją montażu jednostki zewnętrznej, aby następnie bezpiecznie i z dobrym skutkiem użytkować moduł wewnętrzny z wbudowanym zasobnikiem CWU.Oryginał dokumentu jest dostępny w języku angielskim. Inne wersje językowe są tłumaczeniami oryginału.

English (EN)

Deutsch (DE)

Français (FR)

Nederlands (NL)

Español (ES)

Italiano (IT)

Português (PT)

Dansk (DA)

Svenska (SV)

Norsk (NO)

Suomi (FI)

Русский (RU)

Česky (CZ)

Polski (PL)

Contents

1. Safety Notices .................................................................. 2

2. Introduction ...................................................................... 2

3. Technical Information ...................................................... 3

4. Installation ....................................................................... 9

4.1 Location ........................................................................ 9

4.2 Water Quality and System Preparation .................... 12

4.3 Water Pipe Work ......................................................... 12

4.4 Electrical Connection ................................................ 15

5. System Set UP ................................................................ 18

5.1 DIP Switch Functions ................................................ 18

5.2 Connecting inputs/outputs ....................................... 19

5.3 Wiring for 2-zone temperature control .................... 21

5.4 2-zone valve ON/OFF control .................................... 21

5.5 Indoor unit only operation ......................................... 21

5.6 Installation procedure for DHW tank ........................ 22

5.7 Remote Controller Options ....................................... 24

5.8 Using SD memory card.............................................. 26

5.9 Main remote controller .............................................. 27

6. Service and Maintenance .............................................. 35

7. Supplementary information .......................................... 40

■ Heat pumps certification

The mark “NF heat pumps” is an independent certification program proving that heat pumps’ performances and production quality of the factory are conformed with the certification reference NF-414. The combinations of indoor units and outdoor units, and their applications allowed to use the NF PAC mark can be consulted on the website www.marque-nf.com

Accessories (included)

Back plate Screw M5×8 SD memory card

1 2 1

Abbreviations and glossary

No. Abbreviations/Word Description

1 Compensation curve mode Space heating incorporating outdoor ambient temperature compensation

2 COP Coefficient of Performance the efficiency of the heat pump

3 Cooling mode

4 DHW mode

Space cooling through fan-coils or underfloor cooling

Domestic hot water heating mode for showers, sinks, etc

5 Flow temperature

6 Freeze stat. function

7 FTC

8 Heating mode

Temperature at which water is delivered to the primary circuit

Heating control routine to prevent water pipes freezing

Flow temperature controller, the circuit board in charge of controlling the system

Space heating through radiators or Underfloor heating

9 Hydrobox

10 Legionella

11 LP mode

12 Packaged model

13 PRV

14 Return temperature

15 Split model

16 TRV

Indoor unit housing the component plumbing parts (NO DHW tank)

Bacteria potentially found in plumbing, showers and water tanks that may cause Legionnaires disease

Legionella prevention mode – a function on systems with water tanks to prevent the growth of legionella bacterium

Plate heat exchanger (Refrigerant - Water) in the outdoor heat pump unit

Pressure relief valve

Temperature at which water is delivered from the primary circuit

Plate heat exchanger (Refrigerant - Water) in the indoor unit

Thermostatic radiator valve – a valve on the entrance or exit of the radiator panel to control the heat output

1

1

Safety Notices

Please read the following safety precautions carefully.

WARNING:

Precautions that must be observed to prevent injuries or death.

CAUTION:

Precautions that must be observed to prevent damage to unit.

This installation manual along with the user manual should be left with the product after installation for future reference.

Mitsubishi Electric is not responsible for the failure of locally-supplied parts.

• Be sure to perform periodical maintenance.

• Be sure to follow your local regulations.

• Be sure to follow the instructions provided in this manual.

WARNING

Mechanical

The hydrobox and outdoor units must not be installed, disassembled, relocated, altered or repaired by the user. Ask an authorised installer or technician. If the unit is installed improperly or modified after installation by the user water leakage, electric shock or fire may result.

The outdoor unit should be securely fixed to a hard level surface capable of bearing its weight.

The hydrobox should be positioned on a hard vertical surface capable of supporting its filled weight to prevent excessive sound or vibration.

Do not position furniture or electrical appliances below the outdoor unit or hydrobox.

The discharge pipework from the emergency/safety devices of the hydrobox should be installed according to local law.

Only use accessories and replacement parts authorised by Mitsubishi Electric ask a qualified technician to fit the parts.

Electrical

All electrical work should be performed by a qualified technician according to local regulations and the instructions given in this manual.

The units must be powered by a dedicated power supply and the correct voltage and circuit breakers must be used.

Wiring should be in accordance with national wiring regulations. Connections must be made securely and without tension on the terminals.

Earth unit correctly.

General

Keep children and pets away from both the hydrobox and outdoor units.

Do not use the hot water produced by the heat pump directly for drinking or cooking. This could cause illness to the user.

Do not stand on the units.

Do not touch switches with wet hands.

Annual maintenance checks on both the hydrobox and the outdoor unit should be conducted by a qualified person.

Do not place contains with liquids on top of the hydrobox. If they leak or spill onto the hydrobox damage to the unit and/or fire could occur.

Do not place any heavy items on top of the hydrobox.

When installing, relocating, or servicing the hydrobox, use only the specified refrigerant (R410A) to charge the refrigerant lines. Do not mix it with any other refrigerant and do not allow air to remain in the lines. If air is mixed with the refrigerant, then it can be the cause of abnormal high pressure in the refrigerant line, and may result in an explosion and other hazards.

The use of any refrigerant other than that specified for the system will cause mechanical failure or system malfunction or unit breakdown. In the worst case, this could lead to a serious impediment to securing product safety.

In heating mode, to avoid the heat emitters being damaged by excessively hot water, set the target flow temperature to a minimum of 2ºC below the maximum allowable temperature of all the heat emitters. For Zone2, set the target flow temperature to a minimum of 5ºC below the maximum allowable flow temperature of all the heat emitters in Zone2 circuit.

CAUTION

Use clean water that meets local quality standards on the primary circuit.

The outdoor unit should be installed in an area with sufficient airflow according to the diagrams in the outdoor unit installation manual.

The hydrobox should be located inside to minimise heat loss.

Water pipe-runs on the primary circuit between outdoor and indoor unit should be kept to a minimum to reduce heat loss.

Ensure condensate from outdoor unit is piped away from the base to avoid puddles of water.

Remove as much air as possible from water circuit.

Refrigerant leakage may cause suffocation. Provide ventilation in accordance with EN378-1.

Be sure to wrap insulation around the piping. Direct contact with the bare piping may result in burns or frostbite.

Never put batteries in your mouth for any reason to avoid accidental ingestion.

Battery ingestion may cause choking and/or poisoning.

Install the unit on a rigid structure to prevent excessive sound or vibration during operation.

If power to the hydrobox is to be turned off (or system switched off) for a long time, the water should be drained.

Preventative measures should be taken against water hammer, such as installing a Water Hammer Arrestor on the primary water circuit, as directed by the manufacturer.

In order to prevent condensation on emitters, adjust flow temperature appropriately and also set the lower limit of the flow temperature on site.

As for the handling of refrigerant, refer to the outdoor unit installation manual.

2

Introduction

The purpose of this installation manual is to instruct competent persons how to safely and efficiently install and commission the hydrobox system. The target readers of this manual are competent plumbers and/or refrigeration engineers who have attended and passed the requisite Mitsubishi Electric product training and have appropriate qualifications for installation of an unvented hot water hydrobox specific to their country.

2

EHPX- VM6C

EHPX- VM2C

ERSC- VM2C

ERSC- MEC

ERSD- VM2C

EHSC- TM9C

EHSC- YM9EC

EHSC- YM9C

EHSC- VM2EC

EHSC- VM2C

EHSC- VM6EC

EHSC- VM6C

EHSC- MEC

EHSD- YM9C

EHSD- VM2C

3

Technical Information

Product specification

EHPX- YM9C

EHSD- MEC

Unvented expansion vessel(Primary heating) circuit (Primary) Booster heater

Safety device

Refrigerant (R410A) Flow temperature Room temperature Outdoor temperature

Target temperature range

Breaker (*when powered from independent source)

Booster heater

3kW +6kW

2kW +4kW

3kW +6kW

3kW +6kW

3kW +6kW

2kW +4kW

2kW +4kW

3kW +6kW

3

3

Technical Information

Component Parts

<E*S*-*M**C> (Split model system)

1

2

9

3

4

5

6

13

14

<Figure 3.1> <Figure 3.2>

6

5

4

<EHPX-*M*C> (Packaged model system)

No.

Part name

1 Control and electrical box

2 Main remote controller

8

7

13

10

4 Water circulation pump 1

5 Pump valve

6 Drain cock (Primary circuit)

7 Booster heater 1,2

8 Flow sensor

9 Manometer

10 Pressure relief valve (3bar)

11 Automatic air vent

12 Expansion vessel

13 Strainer valve

14 Drain pan

EHS*-MEC

EHS*-

*M*C

EHSC-

*M*EC

ERS*-

VM2C

ERSC-

MEC

EHPX-

*M*C

-

-

-

<Table 3.2>

-

-

-

-

-

<Figure 3.3>

*For installation of E*S*-*M*EC model, make sure to install a primary-side expansion vessel in the field. (See Figure 4.3.3.)

4

7

8

11

12

10

3

Technical Information

Technical Drawings

530

Automatic air vent

Front panel

Hook

Terminal block

Back panel support

Main remote controller

Pressure relief valve

G1/2

(242)

<Side> <Front>

<EHS*> (Split model system)

H

B A G

291 263

48

86

124

163

310

353

395

410

461

<View from below>

C

D

<ERS*> (Split model system for heating and cooling)

H G

A

291 263

B

134 94

48

86

124

163 223

308

365

<View from below>

C D

461

I

<EHPX> (Packaged model system)

H

G

<Rear>

Letter Pipe description

A

B

Space heating/Indirect

DHW tank (primary) return connection

Space heating/Indirect

DHW tank (primary) flow connection

C

D

E

F

G

H

I

Connection size/type

28 mm/Compression (EHS*-*and EHPX-*)

G1 nut (ERS*-*)

28 mm/Compression (EHS*-*and EHPX-*)

G1 nut (ERS*-*)

Refrigerant (Liquid)

Refrigerant (Gas)

6.35 mm/Flare (E*SD-*)

9.52 mm/Flare (E*SC-*)

12.7 mm/Flare (E*SD-*)

15.88 mm/Flare (E*SC-*)

Flow connection from heat pump

Return connection to heat pump

Discharge pipe (by installer) from pressure relief valve

Electrical cable inlets

Drain socket

28 mm/Compression (EHPX-*)

28 mm/Compression (EHPX-*)

G1/2” female (valve port within hydrobox casing)

For inlets and , run high-voltage wires including power cable, indoor-outdoor cable, and external output wires.

For inlets and , run low-voltage wires including external input wires and thermistor wires.

For a wireless receiver (option) cable, use inlet .

O.D. ø20

<Table 3.3>

F

291 263 242

48

78

163

334

<View from below>

419

461

E

B A

5

3

Technical Information

Unit Compatibility

Hydrobox

Outdoor unit

Packagedtype

PUHZ-W50, 85, 112

PUHZ-HW112, 140

Split-type SUHZ-SW45

PUHZ-SW40, 50

PUHZ-FRP71

PUHZ-SW75, 100, 120

PUHZ-SHW80, 112, 140

EHSD-

MEC

―

―

―

EHSD-

MC

EHSD-

VM2C

EHSD-

YM9C

EHSC-

MEC

EHSC-

VM2C

EHSC-

VM2EC

EHSC-

VM6C

EHSC-

VM6EC

EHSC-

YM9C

EHSC-

YM9EC

EHSC-

TM9C

ERSD-

VM2C

ERSC-

MEC

ERSC-

VM2C

EHPX-

VM2C

EHPX-

VM6C

EHPX-

YM9C

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

―

<Table 3.4>

Water circuit diagram

*1 Refer to the following section [Local system].

<EHS*> (Split model system)

<ERS*> (Split model system for heating and cooling)

Hydrobox

11

12

19

17

3

4

5

6

13

7

16

27

26

8

15

10 Pa

9

20

Drain

21

Flare connections

<Figure 3.4>

Refrigerant pipe

Water pipe

DHW

Cold water

24

25

23

22

18

26

25

Water supply

Drain

Local system

*1

No.

Part name

1 Control and electrical box

2 Main remote controller

EHS*-

MEC

EHS*-

*M*C

EHSC-

*M*EC

ERS*-

VM2C

(Refrigerant - Water)

4 Water circulation pump 1

5 Pump valve

6 Drain cock (Primary circuit)

7 Booster heater 1, 2

8 Flow sensor

9 Manometer

10 Pressure relief valve (3 bar)

11 Automatic air vent

12 Expansion vessel

13 Strainer valve

14 Drain pan

15 THW1

16 THW2

17 TH2

THW5

18

(Optional part PAC-TH011TK-E or PAC-TH011TKL-E)

19 Outdoor unit

20 Drain pipe (Local supply)

21 3-way valve (Local supply)

-

-

-

-

(Local supply)

-

23 Cold water inlet pipe (Local supply)

-

24 DHW outlet pipe (Local supply) -

(Local supply)

26 Isolating valve (Local supply)

-

(Recommended)

28 Strainer (Local supply)

-

-

-

-

-

-

-

-

-

<Table 3.5>

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

ERSC-

MEC

EHPX-

*M*C

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

<EHPX> (Packaged model system)

19 3

26

28

28 26

Water pipe

11

Hydrobox

12

DHW

Cold water

24

23

25

22

18

6

7

5

4

13

27

26

16

8

15

10

20

Drain

Pa 9

21

26

25

Water supply

Drain

Local system

*1

Note

• Be sure to follow your local regulations to perform system configuration of the DHW connections.

• DHW connections are not included in the hydrobox package. All required parts are to be sourced locally.

• To enable draining of the hydrobox an isolating valve should be positioned on both the inlet and outlet pipework.

• Be sure to install a strainer on the inlet pipe work to the hydrobox.

• Suitable drain pipework should be attached to all relief valves in accordance with your country's regulations.

• A backflow prevention device must be installed on water supply pipework (IEC 61770).

• When using components made from different metals or connecting pipes made of different metals insulate the joints to prevent a corrosive reaction taking place which will damage the pipework.

<Figure 3.5>

6

3

Technical Information

Local system

1-zone temperature control

Zone1

Zone1

1

2

3

5

4

6

1

2-zone temperature control

2

7

3

5

10

9

6

11

8

11

Zone1

Zone2

1

1-zone temperature control with boiler

13

14

15

Zone1

3

5

4

2

6

1

12

2-zone temperature control with boiler

13

14

1-zone temperature control (2-zone valve ON/OFF control)

15

Zone1

Zone1

2

7

3

4

5

10

9

6

8

11

Zone2

1

18

16

17

Zone2

12

1. Zone1 heat emitters (e.g. radiator, fan coil unit) (local supply)

2. Mixing tank (local supply)

10. Zone2 water circulation pump (local supply)

11. Zone2 flow switch (local supply) *

3. Zone1 flow water temp. thermistor (THW6)

4. Zone1 return water temp. thermistor (THW7)

5. Zone1 water circulation pump (local supply)

6. Zone1 flow switch (local supply) *

7. Motorized mixing valve (local supply)

8. Zone2 flow water temp. thermistor (THW8)

Optional part : PAC-TH011-E

12. Zone2 heat emitters (e.g. underfloor heating) (local supply)

13. Boiler flow water temp. thermistor (THWB1)

14. Boiler return water temp. thermistor (THWB2)

Optional part : PAC-TH011HT-E

15. Boiler

16. Zone1 2-way valve (local supply)

17. Zone2 2-way valve (local supply)

18. Bypass valve (local supply)

9. Zone2 return water temp. thermistor (THW9)

Optional part : PAC-TH011-E

* Flow switch specifications: DC12 V / 1 mA / Both normally-open and normally-closed types can be used. (Set DIP switch 3 to select the logics. Refer to “ 5.1 DIP switch function”.)

7

3

Technical Information

Energy monitor

End user can monitor accumulated*1 ‘Consumed electrical energy’ and ‘Delivered heat energy’ in each operation mode*2 on the main remote controller.

*1 Monthly and Year to date

*2 - DHW operation

- Space heating

- Space cooling

Refer to “5.9 Main remote controller” for how to check the energy, and “5.1 DIP switch functions” for the details on DIP-SW setting.

Either one of the following two method is used for monitoring.

Note: Method 1 should be used as a guide. If a certain accuracy is required, the 2nd method should be used.

1. Calculation internally

Electricity consumption is calculated internally based on the energy consumption of outdoor unit, electric heater, water pump(s) and other auxiliaries.

Delivered heat is calculated internally by multiplying delta T (Flow and Return temp.) and flow rate measured by the factory fitted sensors.

Set the electric heater capacity and water pump(s) input according to indoor unit model and specs of additional pump(s) supplied locally. (Refer to the menu tree in “5.9

Main remote controller”)

Defult

EHSD-MEC

EHSD-MC

EHSD-VM2C

EHSD-YM9C

EHSC-MEC

EHSC-VM2C

EHSC-VM2EC

EHSC-VM6C

EHSC-VM6EC

EHSC-YM9C

EHSC-YM9EC

EHSC-TM9C

ERSD-VM2C

ERSC-MEC

ERSC-VM2C

EHPX-VM2C

EHPX-VM6C

EHPX-YM9C

Booster heater1

2kW

2kW

3kW

3kW

3kW

0kW

2kW

2kW

2kW

0kW

0kW

2kW

3kW

2kW

0kW

2kW

2kW

2kW

3kW

Booster heater2

4kW

4kW

6kW

6kW

6kW

0kW

0kW

0kW

4kW

0kW

0kW

0kW

6kW

0kW

0kW

0kW

0kW

4kW

6kW

Immersion heater*1

0kW

0kW *1

0kW *1

0kW *1

0kW *1

0kW *1

0kW *1

0kW *1

0kW *1

0kW *1

0kW *1

0kW *1

0kW *1

0kW *1

0kW *1

0kW *1

0kW *1

0kW *1

0kW *1

<Table 3.6>

Pump1*2 Pump2 Pump3

***(factory fitted pump)

***

***

***

***

***

***

***

***

***

***

***

***

***

***

***

***

***

***

0kW 0kW

When additional pumps supplied locally are connected as Pump2/3, change setting according to specs of the pumps.

*1 Change setting to 3kW when connecting optional immersion heater "PAC-IH03V2-E".

*2 "***" displayed in the energy monitor setting mode means the factory fitted pump is connected as Pump 1 so that the input is automatically calculated.

When anti-freeze solution (propylene glycol) is used for primary water circuit, set the delivered energy adjustment if necessary.

For further detail of above, refer to “5.9 Main remote controller”.

2. Actual measurement by external meter (locally supplied)

FTC has external input terminals for 2 ‘Electric energy meters’ and a ‘Heat meter’.

If two ‘Electric energy meters’ are connected, the 2 recorded values will be combined at the FTC and shown on the main remote controller.

(e.g. Meter 1 for H/P power line, Meter 2 for heater power line)

Refer to the [Signal inputs] section in “5.2 Connecting inputs/outputs” for more information on connectable electric energy meter and heat meter.

8

4

Installation

<Preparation before the installation and service>

● Prepare the proper tools.

● Prepare the proper protection.

● Allow parts to cool before attempting any maintenance.

● Provide adequate ventilation.

● After stopping the operation of the system, turn off the power-supply breaker and remove the power plug.

● Discharge the capacitor before commencing work involving the electric parts.

<Precautions during service>

● Do not perform work involving electric parts with wet hands.

● Do not pour water or liquid into the electric parts.

● Do not touch the refrigerant.

● Do not touch the hot or cold surfaces in the refrigerant cycle.

● When the repair or the inspection of the circuit needs to be carried out without turning off the power, exercise great caution not to touch any live parts.

4.1 Location

Transportation and Handling

Hook

<Figure 4.1.1> <Figure 4.1.2>

Hydrobox is delivered on a wooden pallet base with cardboard protection.

Care should be taken when transporting the hydrobox so that the casing is not damaged by impact. Do not remove the protective packaging until hydrobox has reached its final location. This will help protect the structure and control panel.

Note:

• The hydrobox should ALWAYS be moved by a minimum of 2 people.

• Do NOT hold piping when moving the hydrobox.

Suitable Location

Before installation the hydrobox should be stored in a frost-free weatherproof location. Units must NOT be stacked.

• The hydrobox should be installed indoors in a frost free weather proof location.

• The hydrobox should be positioned on a level wall capable of supporting it’s filled weight.

• To find out the weight, refer to “3. Technical Information”.

• Care should be taken that minimum distances around and in front of the unit for service access are observed <Figure 4.1.3>.

• Secure the hydrobox to prevent it being knocked over.

• The hook and panel supports should be used to fix the hydrobox to the wall.

<Fig. 4.1.2>

• Install the hydrobox where it is not exposed to water/excessive moisture.

Back panel support

Service access diagrams

Service access

Parameter a b c d

Dimension (mm)

200

150

500

500

<Table 4.1.1>

Sufficient space MUST be left for the provision of discharge pipework as detailed in National and Local building regulations.

a b c b d

<Figure 4.1.3>

Service access

The hydrobox must be located indoors and in a frost-free environment, for example in a utility room.

Room Thermostat

If fitting a new room thermostat for this system;

• Position it out of direct sunlight and draughts

• Position it away from internal heat sources

• Position it in a room without a TRV on the radiator/heat emittor

• Position it on an internal wall

Note: Do not position the thermostat excessively close to the external wall. The thermostat may detect the temperature of the wall, which could affect appropriate control of the room temperature.

• Position it approx. 1.5 m above floor level

Repositioning hydrobox

If you need to move the hydrobox to a new position FULLY DRAIN it before moving to avoid damage to the unit.

Note: Do NOT hold piping when moving the hydrobox.

9

4

Installation

Mounting procedure

1. Install the included back plate accessory.

* When installing the back plate, use locally-supplied screws and compatible fixing plugs.

<Front view>

<Accessory>

Notch

Back plate

Back plate

Wall

<Side view>

Screw mounting holes

<Figure 4.1.4>

Back plate (horizontal)

Wall

● Ensure that the notch is positioned at the TOP of the back plate.

The back plate is provided with screw mounting holes that are round or oval.

To prevent the unit from falling off the wall, choose the appropriate number of holes or hole positions and horizontally secure the back plate to the appropriate wall location.

Plugs

<Front view of unit>

Hook

(on the back of casing)

Screws

<Figure 4.1.5>

530

Centre line

Back plate

Screwdriver

● Figure 4.1.6 shows the relative positions between the unit and the wall secured back plate.

Referring to the <Figure 4.1.3> Service access, install the back plate.

Unit

<Figure 4.1.6>

2. Insert the hook on the back of the hydrobox behind the notch of the back plate.

*The lifting up of the hydrobox is facilitated by first tilting the unit forward using the included packaging cushioning.

Note: Hold the MAIN BODY of the hydrobox when carrying or mounting the hydrobox to a wall.

Holding and supporting the unit by the manometer, water pipe, or refrigerant pipe may result in breakdown of the components and impact on unit’s conditions of warranty.

Back plate

Hook

<Process 1>

<Process 2>

Removing the wooden packaging base.

Unit

Tilting the unit.

Unit

<Figure 4.1.7>

Wooden packaging base

Packaging cushion

<Figure 4.1.8>

10

4

Installation

) Each of the right and left side panels has a mark indication.

Lift up the unit so that the marks are positioned above the top edge of the back plate as shown below.

<Side view of unit>

Unit

mark

Wall

Hook

Top edge of back plate

Back plate

(wall mounted)

Lift up the unit.

Lift up the unit so that the marks are positioned above the top edge of the back plate.

<Figure 4.1.9>

) The back plate and the unit share the same width.

When mounting the unit, the centre lines of the back plate and the unit can be aligned by keeping the right and left edges of the back plate within the width of the unit.

The hook on the unit can then be attached to the notch on the back plate. (When mounting, the casing’s lower panel support should be in contact with the wall surface.)

<Front view of unit>

To assist in fixing the unit’s hook on to the notch on the back plate, first line up the centre lines.

Hook

Centre line

Back plate

Unit

* Keep the edges of the back plate within the width of the unit.

Side edges of the back plate

<Figure 4.1.10>

) Check and ensure that the mark is positioned and properly engaged at the bent section level on the back plate as shown.

Unit mark

Wall

Mount the unit.

Hook

Bent section of back plate

Back plate

<Figure 4.1.11>

3. Referring to "How to access Internal Components and Control and Electrical Box", fix the unit and the back plate using the included 2 screws (accessory items).

Control and electrical box

Fix the unit using the 2 screws.

* If it is difficult to access with power tool, use hand tool instead.

<Accessory>

Control and electrical box

Unit

Screw M5×8

Unit

<Figure 4.1.12>

Caution) BEFORE performing field piping, be sure to fit and tighten these two screws.

Otherwise, the hook could be disengaged, and the unit could fall down.

11

<Figure 4.1.13>

4

Installation

4.2 Water Quality and System Preparation

General

• The water in both primary and sanitary circuit should be clean and with pH valve of 6.5-8.0

• The followings are the maximum valves;

Calcium: 100mg/L, Ca hardness: 250mg/L

Chlorine: 100mg/L, Copper: 0.3mg/L

Iron/Manganese: 0.5mg/L

• Other constituents should be to European Directive 98/83 EC standards.l

• In known hard water areas, to prevent/minimise scaling, it is beneficial to restrict the routine stored water temperature (DHW max. temp.) to 55°C.

Anti-Freeze

Anti-freeze solutions MUST use propylene glycol with a toxicity rating of Class 1 as listed in Clinical Toxicology of Commercial Products, 5th Edition.

Note:

1. Ethylene glycol is toxic and must NOT be used in the primary water circuit in case of any cross-contamination of the potable circuit.

2. For 2-zone valve ON/OFF control, propylene glycol MUST be used.

New Installation (primary water circuit)

• Before connecting outdoor unit, thoroughly cleanse pipework of building debris, solder etc using a suitable chemical cleansing agent.

• Flush the system to remove chemical cleanser.

• For all packaged model systems add a combined inhibitor and anti-freeze solution to prevent damage to the pipework and system components.

• For split model systems the responsible installer should decide if anti-freeze solution is necessary for each site’s conditions. Corrosion inhibitor however should always be used.

Existing Installation (primary water circuit)

• Before connecting outdoor unit the existing heating circuit MUST be chemically cleansed to remove existing debris from the heating circuit.

• Flush the system to remove chemical cleanser.

• For all packaged model systems add a combined inhibitor and anti-freeze solution to prevent damage to the pipework and system components.

• For split model systems the responsible installer should decide if anti-freeze solution is necessary for each site’s conditions. Corrosion inhibitor however should always be used.

When using chemical cleansers and inhibitors always follow manufacturer’s instructions and ensure the product is appropriate for the materials used in the water circuit

How to access Internal Components and Control and Electrical Box

<A> Opening the front panel

1. Remove the two lower screws.

2. Slide front panel upwards slightly and open carefully.

3. Disconnect the relay connector connecting main remote controller cable and the control board cable.

<B> Accessing the back of the control and electrical box

The control and electrical box has a holding screw on the right and is hinged on the left hand side.

1. Remove the holding screws on the control and electrical box.

2. The control and electrical box can then be swung forward on the left hand hinges.

Note:

1. Before accessing back of control and electrical box release cables from the tie straps attached to the cross-support.

2. After servicing, re-secure all cables using straps provided. Reconnect main remote controller cable to its relay connector. Replace front panel and re-secure screws at base.

4.3 Water Pipe Work

Note: Prevent the field piping from straining the piping on the hydrobox by fixing it to a wall or applying other methods.

Hot Water Pipework

The function of the following safety components of the hydrobox should be checked on installation for any abnormalities;

• Pressure relief valve

• Expansion vessel pre-charge (gas charge pressure)

The instruction on the following pages regarding safe discharge of hot water from

Safety devices should be followed carefully.

• The pipework will become very hot, so should be insulated to prevent burns.

• When connecting pipework, ensure that no foreign objects such as debris or the like do not enter the pipe.

Hydraulic Filter Work (ONLY EHPX series)

Install a hydraulic filter or strainer (local supply) at the water intake (“Pipe E” in

Table 3.3, also see associated schematic Fig. 3.5)

Minimum amount of water required in the space

heating / cooling circuit

Outdoor heat pump unit

Packaged model PUHZ-W50

PUHZ-W85

PUHZ-W112

PUHZ-HW112

PUHZ-HW140

Split model SUHZ-SW45

PUHZ-SW40

PUHZ-SW50

PUHZ-FRP71

PUHZ-SW75

PUHZ-SW100

PUHZ-SW120

PUHZ-SHW80

PUHZ-SHW112

PUHZ-SHW140

Minimum water quantity [L]

40

60

80

80

100

40

32

40

60

60

80

120

60

80

100

<Table 4.2.1>

Note:

For 2-zone temperature control system, the value in the table above excludes the amount of stored water in zone 2.

<A>

Hinges

<B>

Open

Screws

Screws

<Figure 4.2.1>

Pipework Connections

Connections to the hydrobox should be made using the 28 mm compression as appropriate. (except for ERSC series)

Do not over-tighten compression fittings as this will lead to deformation of the olive ring and potential leaks.

Note: To weld the pipes in the field, cool the pipes on the hydrobox using wet towel etc.

ERSC series have G1 (male) thread connections.

Insulation of Pipework

• All exposed water pipework should be insulated to prevent unnecessary heat loss and condensation. To prevent condensate entering the hydrobox, the pipework and connections at the top of the hydrobox should be carefully insulated.

• Cold and hot water pipework should not be run close together where possible, to avoid unwanted heat transfer.

• Pipework between outdoor heat pump unit and hydrobox should be insulated with suitable pipe insulation material with a thermal conductivity of ≤ 0.04 W/m.K.

12

4

Installation

Drain Pipework (ONLY ERSC and ERSD series)

The drain pipe should be installed to drain condensing water in Cooling mode.

• Securely install the drain pipe to prevent leakage from the connection.

• Securely insulate the drain pipe to prevent water dripping from the locally supplied drain pipe.

• Install the drain pipe at a down slope of 1/100 or more.

• Do not place the drain pipe in drain channel where sulfuric gas exists.

• After installation, check that the drain pipe drains water properly from the outlet of the pipe.

<Installation>

1. Apply polyvinyl chloride type adhesive over the shaded surfaces inside of the drain pipe and on the exterior of the drain socket as shown.

2. Insert the drain socket deeply into the drain pipe <Figure 4.3.1>.

Note: Securely support the locally supplied drain pipe using pipe support to avoid the drain pipe falling from the drain socket.

To prevent dirty water from draining directly onto the floor next to hydrobox, please connect appropriate discharge pipework from the hydrobox.

<Checking Drainage>

• Check that the drain pipe drains water properly from the outlet of the pipe.

• Check for no leakage from the connection.

Note: Always check drainage at installation regardless of season.

• Remove the front panel and pour water of 1 litter into the drain pan <Figure 4.3.2>.

Note: Pour water slowly into the drain pan so that water does not overflow from the drain pan.

Drain socket

Apply polyvinyl chloride type adhesive

Locally supplied drain pipe

(VP-20)

<Figure 4.3.1>

Filling the System (Primary Circuit)

1. Check all connections including factory fitted ones are tight.

2. Insulate pipework between hydrobox and outdoor unit.

3. Thoroughly clean and flush, system of all debris. (see section 4.2 for instruction.)

4. Fill hydrobox with potable water. Fill primary heating circuit with water and suitable anti-freeze and inhibitor as necessary.

Always use a filling loop with double check valve when filling the primary circuit to avoid back flow contamination of water supply.

<Figure 4.3.2>

Do not pour water into these openings.

5. Check for leakages. If leakage is found, retighten the screws onto the connections.

6. Pressurise system to 1 bar.

7. Release all trapped air using air vents during and following heating period.

8. Top up with water as necessary. (If pressure is below 1 bar)

• Anti-freeze should always be used for packaged model systems (see section 4.2 for instruction). It is the responsibility of the installer to decide if anti-freeze solution should be used in split model systems depending on each site’s conditions. Corrosion inhibitor should be used in both split model and packaged model systems.

Figure 4.3.3 shows freezing temperature against anti-freeze concentration.

This figure is an example for FERNOX ALPHI-11. For other anti-freeze, please refer to relevant manual.

• When connecting metal pipes of different materials insulate the joints to prevent a corrosive reaction taking place which will damage the pipework.

-5

-10

5

0

-15

-20

-25

0 50 10 20 30 40

Anti-freeze concentration [%]

<Figure 4.3.3>

Sizing Expansion Vessels

Expansion vessel volume must fit the local system water volume.

To size an expansion vessel both for the heating and cooling circuits the following formula and graph can be used.

When the necessary expansion vessel volume exceeds the volume of an built-in expansion vessel, install an additional expansion vessel so that the sum of the volumes of the expansion vessels exceeds the necessary expansion vessel volume.

* For installation of an E*S*-*M*EC model, provide and install an expansion vessel in the field as the model does not come fitted with an expansion vessel.

V =

ε × G

P² + 0.098

Where;

V : Necessary expansion vessel volume [L]

ε : Water expansion coefficient

G : Total volume of water in the system [L]

P¹ : Expansion vessel setting pressure [MPa]

P² : Max pressure during operation [MPa]

Graph to the right is for the following values

ε : at 70 °C = 0.0229

P¹ : 0.1 MPa

*A 30% safety margin has been added.

13

25

20

15

10

5

0

0 50

Expansion vessel sizing

100 150 200 250

System water volume [L]

<Figure 4.3.4>

300 350 400

4

Installation

Water Circulation Pump Characteristics

Pump speed can be selected by main remote controller setting (see <Figure 4.3.5 -

4.3.9>).

Adjust the pump speed setting so that the flow rate in the primary circuit is appropriate for the outdoor unit installed (see Table 4.3.1). It may be necessary to add an additional pump to the system depending on the length and lift of the primary circuit.

For outdoor unit model not listed in the <Table 4.3.1>, refer to Water flow rate range in the specification table of outdoor unit Data Book. In such case, make sure that the flow rate is greater than 7.1 L/min and less than 27.7 L/min.

<Second pump >

If a second pump is required for the installation please read the following carefully.

If a second pump is used in the system it can be positioned in 2 ways.

The position of the pump influences which terminal of the FTC the signal cable should be wired to. If the additional pump(s) have current greater than 1A please use appropriate relay. Pump signal cable can either be wired to TBO.1 1-2 or

CNP1 but not both.

Option 1 (Space heating/cooling only)

If the second pump is being used for the heating circuit only then the signal cable should be wired to TBO.1 terminals 3 and 4 (OUT2). In this position the pump can be run at a different speed to the hydrobox’s in-built pump.

Option 2 (Primary circuit DHW and space heating/cooling)

If the second pump is being used in the primary circuit between the hydrobox and the outdoor unit (Package system ONLY) then the signal cable should be wired to

TBO.1 terminals 1 and 2 (OUT1). In this position the pump speed MUST match the speed of the hydrobox’s in-built pump.

Note: Refer to 5.2 Connecting inputs/outputs.

Outdoor heat pump unit

Packaged model PUHZ-W50

PUHZ-W85

Split model

PUHZ-W112

PUHZ-HW112

PUHZ-HW140

SUHZ-SW45

PUHZ-SW40

PUHZ-SW50

PUHZ-FRP71

PUHZ-SW75

PUHZ-SW100

PUHZ-SW120

PUHZ-SHW80

PUHZ-SHW112

PUHZ-SHW140

<Table 4.3.1>

Water flow rate range [L/min]

7.1-14.3

10.0-25.8

14.4-27.7

14.4-27.7

17.9-27.7

7.1-12.9

7.1-11.8

7.1-17.2

11.5-22.9

10.2-22.9

14.4-27.7

20.1-27.7

10.2-22.9

14.4-27.7

17.9-27.7

* If the water flow rate is less than 7.1 L/min, the flow rate error will be activated.

If the water flow rate exceeds 27.7 L/min, the flow speed will be greater than 1.5 m/s, which could erode the pipes.

Water Circulation Pump Characteristics

EHSC series

80.0

70.0

60.0

50.0

40.0

30.0

20.0

10.0

0.0

0.0

Speed 5 (Default setting)

Speed 4

Speed 3

Speed 2

Speed 1

5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0

Flow rate [L/min]

<Figure 4.3.5>

ERSC series

80.0

70.0

60.0

50.0

40.0

30.0

20.0

10.0

0.0

0.0

Speed 5 (Default setting)

Speed 4

Speed 3

Speed 2

Speed 1

5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0

Flow rate [L/min]

<Figure 4.3.7>

EHPX series

80.0

70.0

60.0

50.0

40.0

30.0

20.0

10.0

Speed 5 (Default setting)

Speed 4

Speed 3

Speed 2

Speed 1

0.0

0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0

Flow rate [L/min]

<Figure 4.3.9>

80.0

70.0

60.0

50.0

40.0

30.0

20.0

10.0

0.0

0.0

EHSD series

Speed 5 (Default setting)

Speed 4

Speed 3

Speed 2

Speed 1

80.0

70.0

60.0

50.0

40.0

30.0

20.0

10.0

0.0

0.0

5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0

Flow rate [L/min]

<Figure 4.3.6>

ERSD series

Speed 5 (Default setting)

Speed 4

Speed 3

Speed 2

Speed 1

5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0

Flow rate [L/min]

<Figure 4.3.8>

* For installation of EHPX series, set its pump speed with a pressure drop between the hydrobox and the outdoor unit factored into the external static pressure.

14

4

Installation

Safety Device Connections

The hydrobox contains a pressure relief valve. (see <Figure 4.3.10>) The connection size is G1/2” female. The installer MUST connect appropriate discharge pipework from this valve in accordance with local and national regulations.

Failure to do so will result in discharge from the pressure relief valve directly into the hydrobox and cause serious damage to the product.

All pipework used should be capable of withstanding discharge of hot water.

Relief valves should NOT be used for any other purpose, and their discharges should terminate in a safe and appropriate manner in accordance with local regulation requirements.

Note: Beware that the manometer and the pressure relief valve are NOT strained on its capillary side and on its inlet side respectively.

If a pressure relief valve is added, it is essential that no check valve or isolation valve is fitted between the hydrobox connection and the added pressure relief valve (safety matter).

Piping diagram for 2-zone temperature control

Connect the pipe work and locally supplied parts according to the relevant circuit diagram shown in Section 3. Technical Information, of this manual.

For more details on wiring, refer to “5.3 Wiring for 2-zone temperature controls”.

Note: Do not install the thermistors on the mixing tank. This could affect correct monitoring of flow and return temperatures through each zone.

Install the Zone2 flow temp. thermistor (THW8) near the mixing valve.

Factory-fitted pressure relief valve

(G1/2” female connection)

Discharge to drain

(pipe MUST be fitted by installer).

<Figure 4.3.10>

4.4 Electrical Connection

All electrical work should be carried out by a suitably qualified technician. Failure to comply with this could lead to electrocution, fire, and death. It will also invalidate product warranty. All wiring should be according to national wiring regulations.

Breaker abbreviation

ECB1

TB1

Meaning

Earth leakage circuit breaker for booster heater

Terminal block 1

The hydrobox can be powered in two ways.

1. Power cable is run from the outdoor unit to the hydrobox.

2. Hydrobox has independent power source.

Connections should be made to the terminals indicated in the figures to the left below depending on the phase.

Booster heater and immersion heater should be connected independently from one another to dedicated power supplies.

B

C

E

ECB1

D

TB1

ECB1

B

C

E

D

Locally supplied wiring should be inserted through the inlets situated on the base of the hydrobox. (Refer to <Table 3.3>.

Wiring should be fed down the left hand side of the control and electrical box and clamped in place using clips provided.

The wires should be inserted individually through the cable inlets as below.

Power line (B.H.)

Power line (I.H.) (option)

Indoor-Outdoor wire

2 5 4 8

Output wires

Signal input wires

Wireless receiver (option) wire

(PAR-WR51R-E)

1 3 6

Connect the outdoor unit – hydrobox connecting cable to TB1.

Connect the power cable for the booster heater to ECB1.

7

A

<1 phase>

<Figure 4.4.1>

A

<3 phase>

• Make sure that ECB1 is ON.

15

4

Installation

Option 1: Hydrobox powered via outdoor unit

<1 phase>

Affix label A that is included with the manuals near each wiring diagram for hydrobox and outdoor units.

Power supply

~/N

230 V

50 Hz

Earth leakage circuit breaker

*1

Wiring circuit breaker or

Isolating switch

L

N

Outdoor unit

S1

S2

S3

TB1

Hydrobox

L

N

S1

S2

S3

To control board

ECB1

L

N

For booster heater

(Primary circuit)

Power supply

~/N

230 V

50 Hz

Wiring circuit breaker or

Isolating switch

*1 If the installed earth leakage circuit breaker does not have an over-current protection function, install a breaker with that function along the same power line.

<Figure 4.4.2>

Electrical connections 1 phase

Description

Booster heater (Primary circuit)

Power supply

~/N 230 V 50 Hz

Capacity

2 kW

6 kW

Breaker

16 A *1

32 A *1

Wiring

2.5 mm²

6.0 mm²

<3 phase>

Affix label A that is included with the manuals near each wiring diagram for hydrobox and outdoor units.

Power supply

3N~

400 V

50 Hz

Earth leakage circuit breaker

*1

Wiring circuit breaker or

Isolating switch

L1

L2

L3

N

Outdoor unit

S1

S2

S3

TB1

Hydrobox

L1

L2

S1

S2

S3

To control board

Power supply

3~

400 V 50 Hz (EH**-YM9(E)C)

3~ 230 V 50 Hz (EHSC-TM9C)

Wiring circuit breaker or

Isolating switch

ECB1

L1

L2

L3

For booster heater

(Primary circuit)

*1 If the installed earth leakage circuit breaker does not have an over-current protection function, install a breaker with that function along the same power line.

Description

<Figure 4.4.3>

Electrical connections 3 phase

Booster heater (Primary circuit)

Power supply

3~ 400 V 50 Hz

3~ 230 V 50 Hz

Capacity

9 kW

9 kW

Breaker

16 A *1

32 A *1

Wiring

2.5 mm²

6.0 mm²

Hydrobox - Outdoor unit *2 3 × 1.5 (polar)

Wiring No. × s

Hydrobox - Outdoor unit earth *2 1 × Min. 1.5

Hydrobox - Outdoor unit S1 - S2 *3 230 V AC

Circuit rating

Hydrobox - Outdoor unit S2 - S3 *3 24 V DC

*1. A breaker with at least 3.0 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV).

The breaker shall be provided to ensure disconnection of all active phase conductors of the supply.

*2. Max. 45 m

If 2.5 mm² used, Max. 50 m

If 2.5 mm² used and S3 separated, Max. 80 m

*3. The values given in the table above are not always measured against the ground value.

Notes: 1. Wiring size must comply with the applicable local and national codes.

2. Indoor unit/outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60245 IEC 57)

Indoor unit power supply cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60227 IEC 53)

3. Install an earth longer than other cables.

4. Please keep enough output capacity of power supply for each heater. Insufficient power supply capacity might cause chattering.

16

4

Installation

Option2: Hydrobox powered by independent source

If the hydrobox and outdoor units have separate power supplies, the following requirements MUST be carried out:

• Change connector connections in hydrobox control and electrical box

(see Figure 4.4.4).

• Turn the outdoor unit DIP switch SW8-3 to ON.

• Turn on the outdoor unit BEFORE the hydrobox.

• Power by independent source is not available for particular models of outdoor unit model.

For more detail, refer to the connecting outdoor unit installation manual.

<1 phase>

Affix label B that is included with the manuals near each wiring diagram for hydrobox and outdoor units.

Power supply

~/N

230 V

50 Hz

Earth leakage circuit breaker

*1

Wiring circuit breaker or

Isolating switch

Outdoor unit

TB1

L

N

Hydrobox

Power supply

~/N

230 V

50 Hz

Earth leakage circuit breaker

*1

Wiring circuit breaker or

Isolating switch

Power supply

~/N

230V

50Hz

L

N

S1

S2

S3

Wiring circuit breaker or

Isolating switch

S1

S2

S3

To control board

ECB1

L

N

For booster heater

(Primary circuit)

<Figure 4.4.5>

Electrical connections 1 phase

Initial settings

(Power supplied by outdoor unit)

Modified settings

(Separate power supply to the hydrobox)

L

N

L

N

S1

S2

S3

S1

S2

S3

<Figure 4.4.4>

White

CN01

Hydrobox control board

White

CN01

Hydrobox control board

*1 If the installed earth leakage circuit breaker does not have an over-current protection function, install a breaker with that function along the same power line.

Description Power supply Capacity Breaker Wiring

Booster heater

(Primary circuit) ~/N 230 V 50 Hz

2 kW

6 kW

16 A *1 2.5 mm²

32 A *1 6.0 mm²

<3 phase>

Affix label B that is included with the manuals near each wiring diagram for hydrobox and outdoor units.

Power supply

~/N

230 V

50 Hz

Earth leakage circuit breaker

*1

Wiring circuit breaker or

Isolating switch

TB1

Hydrobox

L

N

Power supply

3N~

400 V

50 Hz

Earth leakage circuit breaker

*1

Wiring circuit breaker or

Isolating switch

L1

L2

L3

N

Outdoor unit

S1

S2

S3

S1

S2

S3

To control board

Power supply

3~

400 V 50 Hz (EH**-YM9(E)C)

3~

230 V 50 Hz (EHSC-TM9C)

Wiring circuit breaker or

Isolating switch

<Figure 4.4.6>

Electrical connections 3 phase

ECB1

L1

L2

L3

For booster heater

(Primary circuit)

*1 If the installed earth leakage circuit breaker does not have an over-current protection function, install a breaker with that function along the same power line.

Description

Booster heater

(Primary circuit)

Power supply Capacity Breaker Wiring

3~ 400 V 50 Hz 9 kW 16 A *1 2.5 mm²

3~ 230 V 50 Hz 9 kW 32 A *1 6.0 mm²

Hydrobox power supply

Hydrobox input capacity

Main switch (Breaker)

*1

~/N 230 V 50 Hz

16 A

Wiring No. × size (mm²)

Circuit rating

Hydrobox power supply

Hydrobox power supply earth

Hydrobox - Outdoor unit

Hydrobox - Outdoor unit earth

Hydrobox L - N

Hydrobox - Outdoor unit S1 - S2

Hydrobox - Outdoor unit S2 - S3

*2

*3

*3

*3

2 × Min. 1.5

1 × Min. 1.5

2 × Min. 0.3

—

230 V AC

—

24 V DC

*1. A breaker with at least 3.0 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV).

The breaker shall be provided to ensure disconnection of all active phase conductors of the supply.

*2. Max. 120 m

*3. The values given in the table above are not always measured against the ground value.

Notes: 1. Wiring size must comply with the applicable local and national codes.

2. Indoor unit/outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60245 IEC 57)

Indoor unit power supply cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60227 IEC 53)

3. Install an earth longer than other cables.

4. Please keep enough output capacity of power supply for each heater. Insufficient power supply capacity might cause chattering.

17

5

System Set Up

5.1 DIP Switch Functions

Located on the FTC printed circuit board are 5 sets of small white switches known as DIP switches. The DIP switch number is printed on the circuit board next to the relevant switches. The word ON is printed on the circuit board and on the DIP switch block itself. To move the switch you will need to use a pin or the corner of a thin metal ruler or similar.

DIP switch settings are listed below in Table 5.1.1.

Make sure to turn off both indoor unit and outdoor unit power supplies before changing the switch settings.

SW5

SW4

SW3

SW2

SW1

DIP switch Function

SW1 SW1-1 Boiler

SW1-2 Heat pump maximum outlet water temperature

SW1-3 DHW tank

SW1-4 Immersion heater

SW1-5 Booster heater

SW1-6 Booster heater function

SW1-7 Outdoor unit type

SW1-8 Wireless remote controller

SW2 SW2-1 Room thermostat1 input (IN1) logic change

SW2-2 Flow switch1 input (IN2) logic change

SW2-3 Booster heater capacity restriction

SW2-4 Cooling mode function

WITHOUT Boiler

55ºC

OFF

WITH Boiler

60ºC

ON

<Figure 5.1.1>

OFF

Default settings:

Indoor unit model

ON *1

WITHOUT DHW tank WITH DHW tank OFF

WITHOUT Immersion heater

WITHOUT Booster heater

For heating only

Split type

WITH Immersion heater

WITH Booster heater

For heating and DHW

Packaged type

OFF

OFF: E***-M*C

ON : E***-*M2/6/9C

OFF: E***-M*C

ON : E***-*M2/6/9C

OFF: E*S*-*M*C

ON : EHPX-*M*C

WITHOUT Wireless remote controller WITH Wireless remote controller OFF

Zone1 operation stop at thermostat short Zone1 operation stop at thermostat open OFF

Failure detection at short

Inactive

Inactive

Failure detection at open

Active

Active

OFF

OFF: Except E***-VM2*C

ON : E***-VM2*C

OFF: Except ERS*-*M**C

ON : ERS*-*M**C

Inactive Active *2 OFF

SW2-6 Mixing tank

SW2-7 2-zone temperature control

WITHOUT Mixing tank

Inactive

WITH Mixing tank

Active *6

OFF

OFF

SW2-8 Flow sensor

SW3 SW3-1 Room thermostat 2 input (IN6) logic change

SW3-2 Flow switch 2 input (IN3) logic change

SW3-3 Flow switch 3 input (IN7) logic change

SW3-4 Electric energy meter

SW3-5 Heating mode function *3

SW3-6 2-zone valve ON/OFF control

SW3-7 Heat exchanger for DHW

SW3-8 Heat meter

SW4 SW4-1 Multiple outdoor units control

SW4-2 Position of multiple outdoor units control *7

SW4-3 —

WITHOUT Flow sensor

Failure detection at short

WITHOUT Electric energy meter

Inactive

Inactive

Coil in tank

WITHOUT Heat meter

Inactive

Slave

WITH Flow sensor

Failure detection at open

WITH Electric energy meter

Active

Active

External plate HEX

WITH Heat meter

Active

Master

ON

Zone2 operation stop at thermostat short Zone2 operation stop at thermostat open OFF

Failure detection at short Failure detection at open OFF

OFF

OFF

ON

OFF

OFF

OFF

OFF

OFF

SW4-4 Indoor unit only operation (during installation work) *4 Inactive

SW4-5 Emergency mode (Heater only operation) Normal

Normal SW4-6 Emergency mode (Boiler operation)

SW5 SW5-1

—

SW5-2

SW5-3

—

SW5-4

SW5-5

SW5-6

SW5-7

E*SC-*M*C

E*SD-*M*C

EHPX-*M*C

—

—

—

Active

Capacity code

SW5-3 SW5-4 SW5-5 SW5-6 SW5-7

ON ON ON ON OFF

ON

OFF

OFF

OFF

OFF

OFF

ON

OFF

OFF

OFF

— OFF

OFF

Emergency mode (Heater only operation) OFF *5

Emergency mode (Boiler operation)

—

—

OFF *5

OFF

OFF

SW5-8 — — — OFF

<Table 5.1.1>

Note: *1. When the hydrobox is connected with a PUHZ-RP/SUHZ-SW outdoor unit of which maximum outlet water temperature is 55ºC, DIP SW1-2 must be changed to OFF.

*2. OUT11 will be available. For safety reasons, this function is not available for certain errors. (In that case, system operation must be stopped and only the water circulation pump keeps running.)

*3 This switch functions only when the hydrobox is connected with a PUHZ-FRP outdoor unit. When another type of outdoor unit is connected, the heating mode function is active regardless of the fact that this switch is ON or OFF.

*4. Space heating and DHW can be operated only in indoor unit, like an electric boiler. (Refer to “5.5 Indoor unit only operation”. )

*5. If emergency mode is no longer required, return the switch to OFF position.

*6. Active only when SW3-6 is set to OFF.

*7. Active only when SW4-1 is set to ON.

18

5

System Set Up

5.2 Connecting inputs/outputs

1

3

5

6

3

4

1

2

TBO.1

5

6

3

4

7

8

1

2

1

4

5

2

3

6

TBO.2

TBO.3

3

4

1

2

5

6

TBO.4

CNBC

(GRY)

1

3

1

3

1

3

1

3

1

5

1

CNP1

(WHT)

CNP4

(RED)

CNV1

(WHT)

CNIH

(ORN)

CNBHT

(BLK)

CNBH

(WHT)

7

SW3

8

1

SW2

8

1

SW1

8

1

SW5

1

SW4

6

1

8

FTC

LED1

LED2

LED3

LED4

F2

6.3A 250V

CN01

(WHT) 4

6

1

2

F1

10A 250V

CN3C

(BLU)

1

3

CNPWM

(WHT)

1

3

CNRF

(WHT)

1

5

CN105

(RED)

1

5

CNIT

(BLU)

1

5

CN22

(BLU)

CN108

1

2

2 4 6 8 10 12 14

1 3 5 7 9 11 13

TBI.1

(WHT)

1

CN1A

4

2 4 6 8 10 12 14

1 3 5 7 9 11 13

TBI.3

1

2

CNW5

(WHT)

CNW12

(RED)

1

4

CN21

(YLW)

1

3

CN20

(RED)

1

2

1

2

3

4

5

6

7

8

9

10

11

TBI.2

12 14

13

<Figure 5.2.1>

When the wires are wired to adjacent terminals use ring terminals and insulate the wires.

Signal inputs

Name Terminal block Connector Item

IN1

IN2

IN3

IN4

IN5

IN6

IN7

IN8

IN9

TBI.1 13-14

TBI.1 11-12

TBI.1 9-10

TBI.1 7-8

TBI.1 5-6

TBI.1 3-4

TBI.1 1-2

TBI.3 1-2

TBI.3 3-4

IN10 TBI.3 5-6

—

—

—

—

—

—

—

—

—

—

Room thermostat 1 input

Flow switch 1 input

Flow switch 2 input (Zone1)

Demand control input

Outdoor thermostat input *1

Room thermostat 2 input

Flow switch 3 input (Zone2)

Electric energy meter 1

Electric energy meter 2

Heat meter

OFF (Open) ON (Short)

Refer to SW2-1 in <5.1 DIP Switch Functions>.

Refer to SW2-2 in <5.1 DIP Switch Functions>.

Refer to SW3-2 in <5.1 DIP Switch Functions>.

Normal

Standard operation

Heat source OFF/ Boiler operation *2

Heater operation/ Boiler operation *2

Refer to SW3-1 in <5.1 DIP Switch Functions>.

Refer to SW3-3 in <5.1 DIP Switch Functions>.

*3

*1. If using outdoor thermostat for controlling operation of heaters, the lifetime of the heaters and related parts may be reduced.

*2. To turn on the boiler operation, use the main remote controller to select “Boiler” in “External input setting“ screen in the service menu.

*3. Connectable electric energy meter and heat meter

● Pulse meter type

● Pulse duration

● Possible unit of pulse

Voltage free contact for 12VDC detection by FTC (TBI.3 1, 3 and 5 pin have a positive voltage.)

Minimum ON time: 40ms

Minimum OFF time: 100ms

0.1 pulse/kwh

100 pulse/kwh

1 pulse/kwh

1000 pulse/kwh

10 pulse/kwh

Those values can be set by the main remote controller. (Refer to the menu tree in "5.8 Main remote controller".)

Wiring specification and local supply parts

Item

Signal input function

Name

Signal input wire

Switch

Model and specifications

Use sheathed vinyl coated cord or cable.

Max. 30 m

Wire type: CV, CVS or equivalent

Wire size: Stranded wire 0.13 mm² to 1.25 mm²

Solid wire: ø0.4 mm to ø1.2 mm

Non-voltage “a” contact signals

Remote switch: minimum applicable load 12V DC, 1mA

Thermistor inputs

Name Terminal block Connector Item

TH1 — CN20 Thermistor (Room temp.) (Option)

TH2

THW1

THW2

THW5

THW6 TBI.2 3-4

THW7 TBI.2 5-6

THW8 TBI.2 7-8

THW9 TBI.2 9-10

—

—

—

—

THWB1 TBI.2 11-12

THWB2 TBI.2 13-14

CN21 Thermistor (Ref. liquid temp.)

CNW12 1-2 Thermistor (Flow water temp.)

CNW12 3-4 Thermistor (Return water temp.)

CNW5 Thermistor (DHW tank water temp.) (Option) *1

—

—

—

—

—

—

Thermistor (Zone1 flow water temp.) (Option) *1

Thermistor (Zone1 return water temp.) (Option) *1

Thermistor (Zone2 flow water temp.) (Option) *1

Thermistor (Zone2 return water temp.) (Option) *1

Thermistor (Boiler flow water temp.) (Option) *1

Thermistor (Boiler return water temp.) (Option) *1

Optional part model

PAC-SE41TS-E

—

—

—

PAC-TH011TK-E (5 m) / PAC-TH011TKL-E (30 m)

PAC-TH011-E

PAC-TH011-E

PAC-TH011HT-E

Ensure to wire thermistor wirings away from the power line and/or OUT1 to 15 wirings.

*1. The maximum length of the thermistor wiring is 30 m. When the wires are wired to adjacent terminals, use ring terminals and insulate the wires.

The length of the optional thermistors are 5 m. If you need to splice and extend the wirings, following points must be carried out.

1) Connect the wirings by soldering.

2) Insulate each connecting point against dust and water.

19

5

System Set Up

Outputs

Name Terminal block

Connector Item

OUT1 TBO.1 1-2 CNP1 Water circulation pump 1 output

(Space heating/cooling & DHW)

OUT2 TBO.1 3-4 —

OUT3 TBO.1 5-6 —

Water circulation pump 2 output

(Space heating/cooling for Zone1)

Water circulation pump 3 output

(Space heating/cooling for Zone2) *1

OUT14 — CNP4

OUT4 TBO.2 4-6 CNV1

OUT5

TBO.2 1-2

TBO.2 2-3

—

2-way valve 2b output *2

Water circulation pump 4 output (DHW)

3-way valve (2-way valve 1) output

Mixing valve output *1

OUT6 — CNBH 1-3 Booster heater 1 output

OUT7 — CNBH 5-7 Booster heater 2 output

OUT8 TBO.4 5-6 — Cooling signal output

OUT9 TBO.4 3-4 CNIH

OUT11 TBO.3 3-4 —

OUT12 TBO.3 5-6 —

OUT13 TBO.4 1-2 —

OUT15 TBO.3 7-8 —

Immersion heater output

Error output

Defrost output

2-way valve 2a output *2

Comp ON signal

OUT10 TBO.3 1-2 — Boiler output

OFF

OFF

OFF

OFF

OFF

Heating

Stop

OFF

OFF

OFF

OFF

Normal

Normal

OFF

OFF

OFF

Do not connect to the terminals that are indicated as “—” in the “Terminal block” field.

*1 For 2-zone temperature control.

*2 For 2-zone valve ON/OFF control.

N L N L N L N L N L N L N L N L

ON

ON

ON

ON

ON

DHW

Close

Open

ON

ON

ON

ON

Error

Defrost

ON

ON

ON

Signal/Max current

230V AC 1.0A Max

230V AC 1.0A Max

230V AC 1.0A Max

Max. total current

4.0A (a)

230V AC 1.0A Max

230V AC 0.1A Max

230V AC 0.1A Max

230V AC 0.5A Max (Relay)

230V AC 0.5A Max (Relay)

230V AC 0.5A Max

230V AC 0.5A Max (Relay)

230V AC 0.5A Max

230V AC 0.5A Max

230V AC 0.1A Max

230V AC 0.5A Max non-voltage contact

· 220-240V AC (30V DC)

0.5A or less

· 10mA 5V DC or more

3.0A (b)

—

N L N L N L

TBO.1

1 2 3 4 5 6 TBO.2

1 2 3 4 5 6 TBO.3 1 2 3 4 5 6 7 8 TBO.4

1 2 3 4

5

6

OUT1 OUT2 OUT3

Close Open

OUT5

OUT4 OUT10 OUT11OUT12 OUT15 OUT13 OUT9 OUT8

Wiring specification and local supply parts

Item Name

External output function Outputs wire

Model and specifications

Use sheathed vinyl coated cord or cable.

Max. 30 m

Wire type: CV, CVS or equivalent

Wire size: Stranded wire 0.25 mm² to 1.5 mm²

Solid wire: 0.25 mm² to 1.5 mm²

How to use TBO.1 to 4

Tool

Tool

Conductor

Outline view

Conductor

Top view

Connect them using either way as shown above.

<Figure 5.2.2>

Note:

1. When the hydrobox is powered via outdoor unit, the maximum grand total current of (a)+(b) is 3.0 A.

2. Do not connect multiple water circulation pumps directly to each output (OUT1, OUT2, and OUT3). In such a case, connect them via (a) relay(s).

3. Do not connect water circulation pumps to both TBO.1 1-2 and CNP1 at the same time.

4. Connect an appropriate surge absorber to OUT10 (TBO.3 1-2) depending on the load at site.

5. Stranded wire should be processed with insulation-covered bar terminal (DIN46228-4 standard compatible type).

20

5

System Set Up

5.3 Wiring for 2-zone temperature control

1. Water circulation pump 2 (Zone1 water circulation pump) / Water circulation pump 3 (Zone2 water circulation pump)

Electrically wire water circulation pumps 2 and 3 to the appropriate output terminals. (Refer to “Outputs” in 5.2.)

N L

2. Flow switch 2 (Zone1 flow switch) / Flow switch 3 (Zone2 flow switch)

Connect flow switches 2 and 3 to the appropriate terminals. (Refer to “Signal inputs” in 5.2.)

Set DIP switches 3-2 and 3-3 according to the functions of individual flow switches 2 and 3.

(Refer to “DIP switch functions” in 5.1.)

3. Thermistor

Connect the thermistor to monitor the Zone1 flow temperature to the THW6 (TBI. 2-3 and 2-4) terminals.

Connect the thermistor to monitor the Zone1 return temperature to the THW7 (TBI. 2-5 and 2-6) terminals.

Connect the thermistor to monitor the Zone2 flow temperature to the THW8 (TBI. 2-7 and 2-8) terminals.

Connect the thermistor to monitor the Zone2 return temperature to the THW9 (TBI. 2-9 and 2-10) terminals.

FTC

TBO.2

The maximum length of the thermistor wiring is 30 m. The length of the optional thermistors are 5 m. If you need to splice and extend the wirings, following points must be carried out.

1) Connect the wirings by soldering.

2) Insulate each connecting point against dust and water.

from mixing tank

A

4. Motorized mixing valve

Connect three wires coming from the motorized mixing valve to the appropriate terminals referring to “Outputs” in 5.2.

Note: Connect the signal line to open Port A (hot water inlet port) to TBO. 2-3 (Open), the signal line to open

Port B (cold water inlet port) to TBO. 2-1 (Close) , and the neutral terminal wire to TBO. 2-2 (N).

to mixing tank

1 2 3

Close N Open

B to Zone2 heat emitter

5.4 2-zone valve ON/OFF control

Opening /closing 2-way valve provides a simple 2-Zone control.

Flow temperature is common for Zone1 and 2.

1. Pipe work

3

1

Zone1

1. Zone1 2-way valve 2a (local supply)

2. Zone2 2-way valve 2b (local supply)

3. Water circulation pump 2 (local supply) *1

4. By-pass valve (local supply) *2

4

2

Zone2

*1 Install according to system in the field.

*2 For safety protection, it is recommended to install a by-pass valve.

Note: 1. Freeze stat function is deactivated whilst this control is ON.

Use anti-freeze solution to avoid freezing, if necessary.

2. When mixing tank and DHW tank are installed, install a

3-way valve (OUT4) in the primary water circuit.

2. DIP switch

Turn DIP switch 3-6 ON.

3. 2-way valve 2a (for Zone1) / 2-way valve 2b (for Zone2)

Electrically wire 2-way valve 2a and 2b to the appropriate external output terminals. (Refer to "External outputs" in 5.2)

4. Room thermostat connection

Heating operation mode

Room temp. control

(Auto adaptation) *3

Compensation curve or flow temp. control

Zone1

● Wireless remote controller (option)

● Room temperature thermistor (option)

● Main remote controller (remote position)

● Wireless remote controller (option) *4

● Room temperature thermostat (local supply)

Zone2

● Wireless remote controller (option)

● Wireless remote controller (option) *4

● Room temperature thermostat (local supply)

*3 Ensure to install the room thermostat for Zone1 in main room since the Room temp. control for Zone1 is prioritized.

*4 The wireless remote controller can be used as a thermostat.

5.5 Indoor unit only operation (during installation work)

In the case when DHW or heating operation is required prior to connection of the outdoor unit; i.e. during installation work, an electric heater in indoor unit (*1) can be used.

*1 Model with electric heater only.

1. To start operation

● Check if the indoor unit power supply is OFF, and turn DIP switch 4-4 and 4-5 ON.

● Turn ON the indoor unit power supply.

2. To end operation *

● Turn OFF the indoor unit power supply.

● Turn DIP switch 4-4 and 4-5 OFF.

*When the indoor unit only operation is ended, ensure to check over the settings after outdoor unit is connected.

Note:

Prolonged running of the this operation may affect the life of the electric heater.

21

5

System Set Up

5.6 Installation procedure for DHW tank

Note:

• Be aware that the respective DHW operations are greatly effected by the selections of the components such as tank, immersion heater, or the like.

• Follow your local regulations to perform system configuration.

1. To enable switching of the water circulation circuit between the DHW mode and the heating mode, install a 3-way valve (local supply). The 3-way valve and the DHW tank should be positioned as shown in the system diagram on the page 6, Figure 3.4 or 3.5 as applicable.

The use of two 2-way valves can perform the same function as a 3-way valve.

2. Install the optional thermistor THW5 (optional part PAC-TH011TK-E/PAC-

TH011TKL-E) on the DHW tank.

It is recommended to position the thermistor at the mid point of the DHW tank capacity. Insulate thermistor from ambient air. Especially for double (insulated) tank, thermistor should be attached to the inner side (to detect the water temperature).

3. Connect the thermistor lead to the CNW5 connector on the FTC.

If the thermistor lead is too long bundle it with a strap to adjust the length.

4. The output terminals for the 3-way valve is TBO.2 4-5 (OUT4).

The TBO.2 4-5 terminals on the FTC are shown in the wiring diagram on Page

20.

Choose the terminals that the 3-way valve is connected to between TBO.2 4-5, or TBO.2 4-6, according to the rated voltage.

When the rated current of the 3-way valve exceeds 0.1A, be sure to use a relay with maximum voltage and current ratings of 230V AC / 0.1A when connecting to the FTC. Do not directly connect the 3-way valve cable to the FTC.

Connect the relay cable to the TBO.2 4-5 terminals.

3-way valve must be of SPST type. SPDT type can NOT be used.

For systems using 2-way valves instead of a 3-way valve please read the following;

Specification of 2-way valve (local supply)

• Power supply: 230V AC

• Current: 0.1A Max

(If over 0.1A you must use a relay)

• Type: Normally closed

Installation position

Electrical connection terminal block

Output signal

Heating DHW

2-way valve1 DHW

2-way valve2 Heating

TBO.2 4-5

TBO.4 1-2

OFF

(closed)

ON

(open)

ON

(open)

OFF

(closed)

System

OFF

OFF

(closed)

OFF

(closed)

Note: Should the 2-way valve become blocked the water circulation will stop.

A by-pass valve or circuit should be installed between pump and 2-way valve for safety.

The TBO.4 1-2 terminals on the FTC are shown in the wiring diagram.

The 2-way valve (local supply) should be installed according to the instructions supplied with it. Follow 2-way valve’s manufacturer’s instructions as to whether to connect an earth cable or not.

• For the 2-way valve, choose the one that slowly opens and shuts off to prevent water hammer sound.

• Choose the 2-way valve equipped with manual override, which is necessary for topping up or draining of water.

5. Turn the DIP SW1-3 on the FTC to ON.

6. When using an immersion heater (local supply), connect a contact relay cable for the immersion heater to TBO.4 3-4 (OUT9), and turn the DIP SW1-4 to ON.

Do NOT directly connect the power cable to the FTC.

Note:

• When an immersion heater is installed, select appropriate breaker capacity and a cable with appropriate diameter on the basis of heater output.

• When wiring an immersion heater in the field, always install an earth leakage breaker to prevent accidental electric shock.

TBO.2 4-5

TBO.4 1-2

DIP-SW1

Connector CNW5

WARNING: When connecting DHW tank

(1) Attach the optional thermistor THW5 (PAC-TH011TK-E / PAC-TH011TKL-E).

(2) Always use earth leakage breaker when connecting immersion heater.

(3) When installing an immersion heater, be sure that the immersion heater has a built-in direct cut-off thermostat.

(4) Connect a pressure relief valve on the sanitary water side.

(5) It is essential that no check valve or isolating valve is fitted between the hydrobox and the pressure relief valve.

22

5

System Set Up

Recommended DHW system

Where system involves a DHW tank:

DHW tank

Present

Immersion heater

Absent

Booster heater

Present

BH function

For space heating/ cooling and DHW

Hydrobox

THW1

Booster heater

THW2

System diagram

DHW tank

THW5

3-way valve (*)

Heat emitter

Present Present Present For space heating/ cooling and DHW

DHW tank

Hydrobox

THW1

Booster heater

THW2

THW5

3-way valve (*)

Immersion heater

Heat emitter

*The use of two 2-way valves can perform same function as a 3-way valve.

Thermistor

THW1: Flow water temp.

THW2: Return water temp.

THW5: Tank water temp.

(optional part

PAC-TH011TK-E /

PAC-TH011TKL-E)

THW1: Flow water temp.

THW2: Return water temp.

THW5: Tank water temp.

(optional part

PAC-TH011TK-E /

PAC-TH011TKL-E)

23

5

System Set Up

5.7 Remote Controller Options

The hydrobox comes factory fitted with a main remote controller. This incorporates a thermistor for temperature monitoring and a graphical user interface to enable set-up, view current status and input scheduling functions. The main remote controller is also used for servicing purposes. This facility is accessed via password protected service menus.

To provide the best efficiency Mitsubishi Electric recommends using automatic adaptation function based on room temperature. To use this function a room thermistor needs to be present in a main living area. This can be done in a number of ways the most convenient are detailed below.

Refer to heating section of this manual for instructions on how to set compensation curve, Flow temp. or Room temp. (Auto adaptation).

For instructions on how to set the thermistor input for the FTC please refer to Initial settings section.

The factory setting for space heating mode is set to Room temp. (auto adaptation). If there is no room sensor present in the system, this setting must be changed to either

Compensation curve mode or Flow temp mode.

Note: Auto-adaptation is not available in Cooling mode.

1-zone temperature control

Control option A

This option features the main remote controller and the Mitsubishi Electric wireless remote controller. The wireless remote controller is used to monitor room temperature and can be used to make changes to the space heating settings, boost DHW (*1) and switch to holiday mode without having to directly use the main remote controller.

If more than one wireless remote controller is used, the most recently requested temperature setting will commonly be applied to all rooms by the central control system regardless of which wireless remote controller was used. No hierarchy exists across these remote controllers.

Wire the wireless receiver to FTC referring to the wireless remote controller instruction manual. Turn DIP SW1-8 to ON. Before operation configure the wireless remote controller to transmit and receive data referring to the wireless remote controller installation manual.)

Control option B

This option features the main remote controller and the Mitsubishi Electric thermistor wired to FTC. The thermistor is used to monitor room temperature but can not make any changes in control operation. Any changes to DHW (*1) must be made using the main remote controller mounted on the hydrobox.

Wire the thermistor to the TH1 connector on FTC.

The number of room temperature thermistors that can be connected to FTC is always one.

Factory supplied standard

Outdoor unit

Outdoor unit

Wireless receiver

(option)

FTC

Main remote controller

Hydrobox

Wireless remote controller

(option)

20.0°C

20.0°C

Max. 8

20.0°C

20.0°C

Room

FTC

FTC

Hydrobox

Room temperature thermistor (option)

Outdoor unit

Main remote controller

Hydrobox

Room

Control option C

This option features the main remote controller being removed from the hydrobox and situated in a different room. A thermistor built in the main remote controller can be used for monitoring the room temperature for Auto Adaptation function whilst keeping all its features of the main remote controller available.

The main remote controller and FTC are connected by a 2-core, 0.3 mm², non-polar cable

(local supply) with a maximum length of 500 m.

To use the sensor in the main remote controller the main remote controller should come off from the hydrobox. Otherwise it will detect the temperature of the hydrobox instead of room temperature. This will affect the output of the space heating.

Note: Wiring for main remote controller cable shall be (5 cm or more) apart from power source wiring so that it is not influenced by electrical noise from power source wiring. (Do NOT insert main remote controller cable and power source wiring in the same conduit.)

Control option D (Flow temp. or compensation curve only)

This option features the main remote controller and a locally supplied thermostat wired to FTC. The thermostat is used to set the maximum temperature for heating room. Any changes to DHW (*1) must be made using main remote controller mounted on the hydrobox.

The thermostat is wired to IN1 in TBI.1 on FTC. The number of thermostats that can be connected to FTC is always one.

The wireless remote controller can be also used as a thermostat.

Outdoor unit

Outdoor unit

FTC

Hydrobox

FTC

Main remote controller

Hydrobox

Main remote controller

(remote position)

Room

20.0°C

Room temperature thermostat

(local supply)

Room

*1 If applicable

24

5

System Set Up

2-zone temperature control

Control option A

This option features the main remote controller, the Mitsubishi Electric wireless remote controller and a locally supplied thermostat.

The wireless remote controller is used to monitor the Zone1 room temperature and the thermostat is used to monitor the Zone2 room temperature.

The thermostat can be also allocated to Zone1 and the wireless remote controller to Zone2.

The wireless remote controller can be also used to make changes to the space heating settings, boost DHW (*1) and switch to holiday mode without having to use the main remote controller.

If more than one wireless remote controller is used, the last temperature setting adjustment/demand will be applied to ALL rooms in same zone.

Wire the wireless receiver to FTC referring to the wireless remote controller instruction manual. Turn DIP SW1-8 to ON. Before operation configure the wireless remote controller to transmit and receive data referring to the wireless remote controller installation manual.)

The thermostat is used to set the maximum temperature for heating Zone2 room.

The thermostat is wired to IN6 on FTC. (If the thermostat is allocated to Zone1, it is wired to IN1 on TBI.1.) (Refer to 5.2.)

Control option B

This option features the main remote controller, the Mitsubishi Electric thermistor and a locally supplied thermostat that are wired to FTC.

The thermistor is used to monitor the Zone1 room temperature and the thermostat is used to control the Zone2 room temperature.

The thermostat can be also allocated to Zone1 and the thermistor to Zone2.

The thermistor can not make any changes in control operation. Any changes to DHW

(*1) must be made using the main remote controller mounted on the hydrobox.

Wire the thermistor to the TH1 connector on FTC.

The number of room temperature thermistors that can be connected to FTC is always one.

The thermostat is used to set the maximum temperature for heating Zone2 room.

The thermostat is wired to IN6 on FTC. (If the thermostat is allocated to Zone1, wire it to

IN1 on TBI.1.) (Refer to 5.2.)

Outdoor unit

Wireless receiver

(option)

FTC

Main remote controller

Hydrobox

Zone1: Room temp. control (Auto adaptation)

Zone2: Compensation curve or flow temp. control

FTC

Wireless remote controller

(option)

20.0°C

20.0°C

Zone1

20.0°C

Room temperature thermostat

(local supply)

Zone2

Room temperature thermistor (option)

Zone1

Max. 8

Outdoor unit Main remote controller

Hydrobox

Zone1: Room temp. control (Auto adaptation)

Zone2: Compensation curve or flow temp. control

20.0°C

Room temperature thermostat

(local supply)

Zone2

Control option C

This option features the main remote controller (with in-built thermistor) that is removed from the hydrobox to monitor the Zone1 room temperature and a locally supplied thermostat to monitor the Zone2 room temperature.

The thermostat can be also allocated to Zone1 and the thermistor to Zone2.

A thermistor built into the main remote controller can be used for monitoring the room temperature for Auto Adaptation function whilst keeping all its features of the main remote controller available.

The main remote controller and FTC are connected by a 2-core, 0.3 mm², non-polar cable (local supply) with a maximum length of 500 m.

To use the sensor in the main remote controller the main remote controller should be detached from the hydrobox. Otherwise it will detect the temperature of the hydrobox instead of room temperature. This will affect the output of the space heating.

FTC

Main remote controller

(remote position)

Zone1

Outdoor unit

Hydrobox

20.0°C

The thermostat is used to set the maximum temperature for heating Zone2 room.

The thermostat is wired to IN6 on FTC. (If the thermostat is allocated to Zone1, wire it to IN1 on TBI.1.) (Refer to 5.2.)

Note: Wiring for main remote controller cable shall be (5 cm or more) apart from power source wiring so that it is not influenced by electrical noise from power source wiring. (Do NOT insert main remote controller cable and power source wiring in the same conduit.)

Control option D

This option features the locally supplied thermostats wired to FTC. The thermostats are individually allocated to Zone1 and Zone2. The thermostats are used to set each maximum temperature for heating Zone1 and Zone2 rooms. Any changes to DHW (*1) must be made using the main remote controller mounted on the hydrobox.

Zone1: Room temp. control (Auto adaptation)

Zone2: Compensation curve or flow temp. control

FTC

Room temperature thermostat

(local supply)

Zone2

Room temperature thermostat

(local supply)

The thermostat for Zone1 is wired to IN1 in TBI.1 on FTC.

The thermostat for Zone2 is wired to IN6 in TBI.1 on FTC.

Zone1

20.0°C

Outdoor unit

Hydrobox

Room temperature thermostat

(local supply)

Zone1, Zone2: Compensation curve or flow temp. control

Zone2

*1 If applicable

*2 For the options above, the sensor types can be exchanged between Zone1 and Zone2. (e.g. Wireless remote controller in Zone1 and Room temp thermostat in Zone2 can be changed to Room temp. thermostat and wireless remote controller, respectively).

The wireless remote controller can be also used as a thermostat.

25

5

System Set Up

5.8 Using SD memory card

The hydrobox is equipped with an SD memory card interface in FTC.

Using an SD memory card can simplify main remote controller settings and can store operating logs. *1

(a) For insertion, push on the SD memory card until it clicks into place.

(b) For ejection, push on the SD memory card until it clicks.

Note: To avoid cutting fingers, do not touch sharp edges of the SD memory card connector (CN108) on the FTC control board.

(a)

(b)

<Handling precautions>

(1) Use an SD memory card that complies with the SD standards. Check that the

SD memory card has a logo on it of those shown to the right.

(2) SD memory cards to the SD standards include SD, SDHC, miniSD, micro SD, and microSDHC memory cards. The capacities are available up to 32 GB.

Choose that with a maximum allowable temperature of 55ºC.

(3) When the SD memory card is a miniSD, miniSDHC, microSD, or micro SDHC memory card, use an SD memory card converter adapter.

(4) Before writing to the SD memory card, release the write-protect switch.

2 GB

(5) Before inserting or ejecting an SD memory card, make sure to power off the system. If an SD memory card is inserted or ejected with the system powered on, the stored data could be corrupted or the SD memory card be damaged.

*An SD memory card is live for a short duration after the system is powered off.

Before insertion or ejection wait until the LED lamps on the FTC control board are all off.

(6) The read and write operations have been verified using the following SD memory cards, however, these operations are not always guaranteed as the specifications of these SD memory cards could change.

Manufacturer Model

Verbatim #44015 0912-61

SanDisk

Panasonic

SDSDB-002G-B35

RP-SDP04GE1K

Arvato

Arvato

2GB PS8032 TSB 24nm MLC

2GB PS8035 TSB A19nm MLC

Tested in

Mar. 2012

Oct. 2011

Oct. 2011

Jun. 2012

Jul. 2014

Before using a new SD memory card (including the card that comes with the unit), always check that the SD memory card can be safely read and written to by the FTC controller.

<How to check read and write operations> a) Check for correct wiring of power supply to the system. For more details, refer to section 4.4.

(Do not power on the system at this point.) b) Insert an SD memory card.

c) Power on the system. d) The LED4 lamp lights if the read and write operations are successfully completed. If the LED4 lamp continues blinking or does not light, the SD memory card cannot be read or written to by the FTC controller.

(7) Make sure to follow the instruction and the requirement of the SD memory card’s manufacturer.

(8) Format the SD memory card if determined unreadable in step (6). This could make it readable.

Download an SD card formatter from the following site.

SD Association homepage: https://www.sdcard.org/home/

(9) FTC supports FAT file system but not NTFS file system.

(10) Mitsubishi Electric is not liable for any damages, in whole or in part, including failure of writing to an SD memory card, and corruption and loss of the saved data, or the like. Back up saved data as necessary.

(11) Do not touch any electronic parts on the FTC control board when inserting or ejecting an SD memory card, or else the control board could fail.

Logos

Capacities

2 GB to 32 GB *2

SD speed classes

All

• The SD Logo is a trademark of SD-3C, LLC.

The miniSD logo is a trademark of SD-3C, LLC.

The microSD logo is a trademark of SD-3C, LLC.

*1 To edit main remote controller settings or to check operating data, an Ecodan service tool (for use with PC) is required.

*2 A 2-GB SD memory card stores up to 30 days of operation logs.

26

8

10

9

5

System Set Up

5.9 Main remote controller

F1 F2 F3

B C D

12 15 14 11

1

F4

7

Main screen

6

2 3

A

E

5

4

<Main remote controller parts>

Letter Name Function

A

B

C

D

Screen

Menu

Back

Confirm

Screen in which all information is displayed

Access to system settings for initial set up and modifications.

Return to previous menu.

Used to select or save. (Enter key)

E Power/Holiday If system is switched off pressing once will turn system on. Pressing again when system is switched on will enable Holiday Mode. Holding the button down for 3 secs will turn the system off. ( *1)

F1-4 Function keys Used to scroll through menu and adjust settings.

Function is determined by the menu screen visible on screen A.

*1

When the system is switched off or the power supply is disconnected, the hydrobox protection functions (e.g. freeze stat. function) will NOT operate.

Please beware that without these safety functions enabled the hydrobox may potentially become exposed to damage.

13

<Main screen icons>

1

2

3

4

5

6

7

8

9

10

11

12

13

14

-

Icon

Legionella prevention

Heat pump

Electric heater

Target temperature

OPTION

+

Z1

Information

Space heating/ cooling mode

DHW mode

Holiday mode

Current

Z2 temperature

Description

When this icon is displayed ‘Legionella prevention mode’ is active.

‘Heat pump’ is running.

Defrosting

Emergency heating

When this icon is displayed the ‘Electric heaters’

(booster or immersion heater) are in use.

Target flow temperature

Target room temperature

Compensation curve

Pressing the function button below this icon will display the option screen.

Increase desired temperature.

Decrease desired temperature.

Pressing the function button below this icon switches between Zone1 and Zone2.

Pressing the function button below this icon displays the information screen.

Heating mode

Zone1 or Zone2

Cooling mode

Zone1 or Zone2

Normal or ECO mode

When this icon is displayed ‘Holiday mode’ activated.

Timer

Prohibited

Server control

Stand-by

Stand-by (* 2)

Stop

Operating

Current room temperature

Current water temperature of DHW tank

The Menu button is locked or the switching of the operation modes between DHW and Heating operations are disabled in the Option screen.(

*3)

15

SD memory card is inserted. Normal operation.

SD memory card is inserted. Abnormal operation.

*2 This unit is in Stand-by whilst other indoor unit(s) is in operation by priority.

*3 To lock or unlock the Menu, press the BACK and CONFIRM keys simultaneously for 3 seconds.

27

5

System Set Up

Setting the Main remote controller

After the power has been connected to the outdoor and hydrobox (See chapter 4.4) the initial system settings can be entered via the main remote controller.

1. Check all breakers and other safety devices are correctly installed and turn on power to the system.

2. When the main remote controller switched on for the first time, the screen automatically goes to Initial settings menu, Language setting screen and Date/Time setting screen in order.

3. Main remote controller will automatically start up. Wait approximately 6 mins whilst the control menus load.

4. When the controller is ready a blank screen with a line running across the top will be displayed.

5. Press button E (Power) (refer to page 27) to turn on the system. Before turning on the system, perform initial settings as instructed below.

Main Settings Menu

The main settings menu can be accessed by pressing the MENU button. To reduce the risk of untrained end users altering the settings accidentally there are two access levels to the main settings; and the service section menu is password protected.

User Level – Short press

If the MENU button is pressed once for a short time the main settings will be displayed but without the edit function. This will enable the user to view current settings but NOT change the parameters.

Installer Level – Long press

If the MENU button is pressed down for 3 secs the main settings will be displayed with all functionality available.

The color of

▼ buttons is inverted as per right figure.

The following items can be viewed and/or edited (dependent on access level).

• Domestic Hot water (DHW)

• Heating/Cooling

• Schedule timer

• Holiday mode

• Initial settings

• Service (Password protected)

Main menu

Long Press

General Operation

● To find the icon that you wish to set, use the F2 and F3 buttons to move between the icons.

● The highlighted icon will appear as a larger version of the center of the screen.

● Press CONFIRM to select and edit the highlighted mode.

● Follow the <Main remote controller Menu Tree> for further setting, using ◄► buttons for scrolling or F1 to F4 for selecting.

28

5

System Set Up

<Main Controller Menu Tree>

Initial

Main screen

F1

*

F4

* Short press for 1 Zone system.

Information

Option

F1

F2

F3

F4

Forced DHW

DHW

Heating/Cooling

Energy monitor

Menu

Menu

Hot Water (DHW)

<See section>

Heating/Cooling

<See section>

Unrestricted access

Installer only

Shaded items relate to DHW functions.

These are only available if the system includes a DHW tank.

ON ( )/OFF

ON ( )/Prohibited ( )/Timer ( )

ON ( )/Prohibited ( )/Timer ( )

Consumed electrical energy

Delivered energy

Long press

DHW

Legionella

DHW

Legionella

F2 ( EDIT)

F1

F2

F3

(Zone1)

(Zone2)

(PREVIEW)

F4

( EDIT)

F1

F3

F4 ( EDIT)

Normal/Eco

Active/Non active

DHW max. temp.

DHW max. temp. drop

DHW max. operation time

DHW mode restriction

Hot water temp.

Frequency

Start time

Max. operation time

Duration of max. temp.

Heating room temp.( ) / Heating flow temp.( ) / Heating compensation curve( ) / Cooling flow temp.

Heating room temp.( ) / Heating flow temp.( ) / Heating compensation curve( ) / Cooling flow temp.

Compensation curve preview

Compensation curve edit

F1 F2

Zone1/2 select

Zone1

F2

F4

F3 Curve parameters

Adjustment

Zone2

F2

F4

F3

Curve parameters

Adjustment

29

Schedule timer

<See section>

Holiday mode

<See section>

Initial settings

<See section>

<Continued to next page.>

Schedule2 period preview screen

F4

( EDIT)

Schedule2 period setting screen1

Schedule1/2 select

Schedule1

Schedule2

Heating

Cooling

F2 F3

F1

Zone1/2 select

F1

Zone1/2 select

Term setting

F4

Schedule timer preview

Zone1

F4

Day select

F4

Schedule timer preview

Zone2

Day select

Zone1

F4

Schedule timer preview

Zone2

F4

Schedule timer preview

Day select

Day select

F4

Schedule timer preview

DHW

Zone1

F4

Schedule timer preview

F1

Zone1/2 select

Heating

Zone2

F4

Schedule timer preview

F4

Schedule timer preview

Cooling

F1

Zone1/2 select

Zone1

Zone2

F4

Schedule timer preview

F4

Schedule timer preview

Day select

Day select

Day select

Day select

Day select

Day select

F3

( EDIT)

Date/Time

Language

Summer time

Temp. display

DHW

Heating/

Cooling

DHW

Active/Non active

Active/Non active

Holiday mode setting

F1 F2

Zone1/2 select

Zone1

Zone2

Heating room temp.

Heating flow temp.

Cooling flow temp.

Heating room temp.

Heating flow temp.

Cooling flow temp.

yyyy/mm/dd/hh:mm

EN/FR/DE/SV/ES/IT/DA/NL/FI/NO/PT/BG/PL/CS/RU

Contact number

OFF/ON

OFF/Room/Tank/Room&Tank

Time display

°C/°F hh:mm/hh:mm AM/AM hh:mm

°C/°F

Room RC zone select

Zone1

Sensor setting

Select Time/Zone

Room sensor settings

Sensor setting

F1 F2

Zone1/2 select

Sensor setting

Zone2

Select Time/Zone

Time setting

Sensor setting

Time setting

Sensor setting save

Time select

Temp.setting

Time select

Temp.setting

Time select

Temp.setting

Time select

Temp.setting

Time select

Time select

Temp.setting

Time select

Temp.setting

Time select

Temp.setting

Time select

Temp.setting

Time select save save save save save save save save save save

5

System Set Up

<Main Controller Menu Tree>

Initial

Main screen

Menu

Service protected

<See section>

<Continued from the previous page.>

Manual operation

Function settings

Thermistor adjustment

Auxiliary settings

Heat source setting

Pump speed

Operation settings

Unrestricted access

Installer only

Shaded items relate to DHW functions.

These are only available if the system includes a DHW tank.

Economy settings for pump

Electric heater (Heating)

Electric heater (DHW)

Mixing valve control

ON/OFF

Delay

Long press

ON/OFF

Delay

ON/OFF (Booster heater/Immersion heater)

Delay

Running

Interval

Flow sensor

Minimum

Maximum

Standard (Heat pump & electric heater)/Heater (Electric heater only)/

Boiler/Hybrid (Heat pump & heater/Boiler)

Heating operation

Flow temp.range

Min.temp.

Max.temp.

Room temp.control

H/P thermo diff.adjust

Mode

Interval

ON/OFF

Lower limit

Upper limit

Freeze stat function

Simultaneous operation

Cold weather function

Flow t.

Ambient

ON/OFF

Ambient

ON/OFF

Ambient

Boiler settings *1

Ambient

Priority

Schedule

CO

2

Heat source

Ambient/

Cost /CO

2

Electricity

Boiler

Electricity

Boiler

Heat pump capacity

Boiler efficiency capacity

( (

ON/OFF

Target temp.

Start & Finish

Max. temp.

Max. temp. period

Temp. increase step

Increase interval

Temp. decrease step

Decrease interval

External input settings

Running information

Thermistor reading

Summary of settings

Error history

Password protection

Manual reset

SD card

Water pump input

Delivered energy adjustment

Electric energy meter

Heat meter

Demand control (IN4)

Outdoor thermostat (IN5)

Booster heater 1 capacity

Booster heater 2 capacity

Immersion heater

Pump 1

Pump 2

Pump 3

OFF (Heat source)/Boiler

Heater/Boiler

Main controller

FTC

Yes/No

Yes/No

SD Main RC

Main RC SD

F1 F2 F3

Select download data

Select upload data

*1 For more details, refer to the installation manual of PAC-TH011HT-E.

30

5

System Set Up

Domestic Hot Water (DHW)/Legionella Prevention

►For further detail about operation, refer to Operation manual.

Please note that LP mode uses the assistance of electric heaters (if present) to supplement the energy input of the heat pump. Heating water for long periods of time is not efficient and will increase running costs. The installer should give careful consideration to the necessity of legionella prevention treatment whilst not wasting energy by heating the stored water for excessive time periods. The end user should understand the importance of this feature.

ALWAYS COMPLY WITH LOCAL AND NATIONAL GUIDANCE FOR YOUR COUNTRY REGARDING LEGIONELLA PREVENTION.

Heating/Cooling

►For further detail about operation, refer to Operation manual.

Schedule timer

Scheduled timer can be set in two ways, for example; one for summer and the other for winter. (Refer to as "Schedule 1" and "Schedule 2" respectively.) Once the term

(months) for the Schedule 1 is specified, rest of the term will be specified as Schedule 2. In each Schedule, an operational pattern of modes (Heating / DHW) can be set.

If no operational pattern is set for Schedule2, only the pattern for Schedule 1 will be valid. If Schedule 2 is set to full-year (i.e. March to Feb.), only the operational pattern for Schedule 2 will be valid.

Follow the procedure described in General Operation(Page28) for the set up operation.

Setting the schedule timer

The preview screen allows you to view the current settings. In 2-zone heating operation, press F1 to switch between Zone1 and Zone2. Days of the week are displayed across the top of the screen. Where day appears underlined the settings are the same for all those days underlined.

Hours of the day and night are represented as a bar across the main part of the screen.

Where the bar is solid black, space heating/cooling and DHW (whichever is selected) is allowed.

When scheduling heating, button F1 changes the scheduled variable between time and temperature. This enables a lower temperature to be set for a number of hours e.g. a lower temperature may be required at night when the occupants are sleeping.

Preview screen

•The schedule timer for space heating/cooling and DHW are set in the same way. However for DHW only time can be used as scheduling variable.

•A small rubbish bin character is also displayed choosing this icon will delete the last unsaved action.

•It is necessary to use the SAVE function F4 button to save settings. CONFIRM does not act as SAVE for this menu.

Holiday mode

►For further detail about operation, refer to Operation manual.

Initial Settings

From the Initial settings menu the installer can set the following.

• Date/Time *Be sure to set it to the local standard time.

• Language

• Summer time

• Temp. display

• Contact number

• Time display

• ºC/ºF

• Room sensor settings

Follow the procedure described in General Operation for the set up operation.

<Room sensor settings>

For room sensor settings it is important to choose the correct room sensor depending on the heating mode the system will operate in.

Menu subtitle Description

Room RC zone select

When 2-zone temperature control is active and wireless remote controllers are available, from Room RC zone select screen, select zone no. to assign to each remote controller.

Sensor setting

From sensor setting screen, select a room sensor to be used for monitoring the room temperature from Zone1 and Zone2 separately.

Control option

(pages 24 - 25)

A

B

C

D

When different room sensors are used according to the time schedule

Corresponding initial settings room sensor

Zone 1

Room RC 1-8 (one each for Zone1 and

Zone2)

Zone 2

*1

TH1

Main remote controller

*1

Time/ Zone*2

*1

*1

*1

*1

*1. Not specified (if a locally-supplied room thermostat is used)

Room RC 1-8 (one each for Zone1 and Zone2) (if a wireless remote controller is used as a room thermostat)

*2. From sensor setting screen, select Time/Zone to make it possible to use different room sensors according to the time schedule set in the Select Time/ Zone menu. The room sensors can be switched up to 4 times within 24 hours.

Time/Zone schedule setting screen

31

5

System Set Up

Service Menu

The service menu provides functions for use by installer or service engineer. It is NOT intended the home owner alters settings within this menu. It is for this reason password protection is required to prevent unauthorised access to the service settings.

The factory default password is "0000".

Follow the procedure described in General Operation for the set up operation.

The service menu is navigated using the F1 and F2 buttons to scroll through the functions. The menu is split across two screens and is comprised of the following functions;

1. Manual operation

2. Function settings

3. Thermistor adjustment

4. Auxiliary settings

5. Heat source setting

6. Pump speed

7. Operation settings

8. Energy monitor settings

9. External input settings

10. Running information

11. Thermistor reading

12. Summary of settings

13. Error history

14. Password protection

15. Manual reset

16. SD card

In this Installation Manual, instructions will be given only for the following functions;

1. Manual operation

2. Auxiliary settings

3. Heat source setting

4. Pump speed

5. Operation settings

6. Energy monitor settings

7. External input settings

8. Password protection

9. Manual reset

10. SD card

Information on the other functions can be found by consulting the service manual.

Many functions can not be set whilst the indoor unit is running. The installer should turn off the unit before trying to set these functions. If the installer attempts to change the settings whilst the unit is running the main remote controller will display a reminder message prompting the installer to stop operation before continuing. By selecting

“Yes” the unit will cease operation.

<Manual operation>

During the filling of the system the water circulation pump and 3-way valve can be manually overridden using manual operation mode.

When manual operation is selected a small timer icon appears in the screen. The function selected will only remain in manual operation for a maximum of 2 hours. This is to prevent accidental permanent override of the FTC.

►Example

Pressing F3 button will switch manual operation mode ON for the main 3-way valve. When filling of the

DHW tank is complete the installer should access this menu again and press F3 to deactivate manual operation of the part. Alternatively after 2 hours manual operation mode will no longer be active and

FTC will resume control of the part.

Manual operation and heat source setting can not be selected if the system is running.

A screen will be displayed asking the installer to stop the system before these modes can be activated.

The system automatically stops 2 hours after last operation.

Selected

Running Error indication

Manual operation menu screen

<Auxiliary settings>

This function is used to set the parameters for any auxiliary parts used in the system

Menu subtitle

Economy settings for pump

Delay

Electric heater

(Heating)

Delay

Function/ Description

Water pump stops automatically in certain period of time from when operation is finished.

Time before pump switched off*1

To select “WITH booster heater (ON)” or “WITHOUT booster heater (OFF)” in

Heating mode.

The minimum time required for the booster heater to turn ON from after Heating mode has started.

Electric heater (DHW) To select "WITH (ON)" or "WITHOUT (OFF)" booster heater or immersion heater individually in DHW mode.

Delay The minimum time required for the booster heater or immersion heater to turn ON from after DHW mode has started. (This setting is applied for both booster and immersion heater.)

Running Period from valve fully open (at a hot water mixing ratio of 100%) to valve fully Mixing valve control *2

Flow sensor *3

Interval closed (at a cold water mixing ratio of 100%)

Interval (min) to control the Mixing valve.

Minimum The minimum flow rate to be detected at Flow sensor.

Maximum The maximum flow rate to be detected at Flow sensor.

*1. Decreasing "time before pump switched off" may increase the duration of stand-by in Heating/Cooling mode.

*2. Set the Running time according to the specifications of the actuator of each mixing valve. It is recommended to set the interval to 2 minutes that is a default value. With the interval set longer, it could take longer to warm up a room.

*3. Do not change the setting since it is set according to the specification of Flow sensor attached to the hydrobox.

<Heat source setting>

The default heat source setting is heat pump and all electric heaters present in the system to be operational.

This is referred to as Standard operation on the menu.

Auxiliary settings menu screen

32

5

System Set Up

<Operation settings>

Heating operation

This function allows operational setting of flow temperature range from the Ecodan and also the time interval at which the FTC collects and processes data for the auto adaptation mode.

Menu subtitle

Flow temp. range

Room temp. control

Minimum temp.

Maximum temp.

Mode

Interval

Heat pump thermo diff.adjust On/Off

Lower limit

Upper limit

Function

To minimize the loss by frequent ON and OFF in mild outdoor ambient temperature seasons.

Range

25 - 45

To set max. possible flow temperature according to the type of heat emitters. 35 - 60

Setting for Room temp. control

At Fast mode, target outlet water temperature is set higher than the one set at normal mode. This reduces the time to reach the target room temperature when the room temperature is relatively low.*3

Selectable according to the heat emitter type and the materials of floor (i.e. radiators, floor heating-thick, -thin concrete, wood, etc.)

Normal/

Fast

10 ~ 60

To minimize the loss by frequent ON and OFF in mild outdoor ambient temperature seasons.

Prohibits heat pump operation until the flow temperature drops below the target flow temperature plus lower limit value.

On/Off

−9 - −1

Allows heat pump operation until the flow temperature rises above the target flow temperature plus upper limit value.

+3 - +5

<Table 5.6.1> Heating operation (Room temp. control table)

Note:

1. The minimum flow temperature that prohibits heat pump operation is 20ºC.

2. The maximum flow temperature that allows heat pump operation equals to the maximum temperature set in the Flow temp. range menu.

* Fast mode is not efficient and will increase running cost when compared to normal mode.

Unit

ºC

ºC

-mins.

—

ºC

ºC

Default

30

50

Normal

10

On

−5

+5

Freeze stat function

Menu subtitle

Freeze stat function

Function/ Description

An operational function to prevent the water circuit from freezing when outdoor ambient temperature drops.

Flow t.

The target outlet water temperature at water circuit when operating in Freeze stat function. *2

Outdoor ambient temp. Minimum outdoor ambient temperature which freeze stat function will begin to operate,

(3 - 20ºC) or choose**. If asterisk (**) is chosen freeze stat function is deactivated. (i.e. primary water freeze risk)"

*1. When the system is turned off, freeze stat function is not enabled.

*2. Flow t. is fixed to 20°C and unchangeable.

Simultaneous Operation

For periods of very low outside temperature this mode can be used. Simultaneous operation allows both DHW and space heating to run together by using the heat pump and/or booster heater to provide space heating whilst only the immersion heater provides heating for DHW. This operation is only available if BOTH a DHW tank AND immersion heater are present on the system.

• Range of outdoor ambient temperature at which simultaneous operation starts is −30°C to 10°C (default −15°C).

• System shall automatically return to routine operation. This will happen when the outdoor ambient temperature rises above the selected temperature for this specific mode of operation.

Cold weather function

For extremely low outdoor ambient temperature conditions when the heat pump’s capacity is restricted the heating or DHW is provided only by the electric booster heater

(and immersion if present). This function is intended for use during extreme cold periods only. Extensive use of direct electrical heaters ONLY will result in higher power consumption and may reduce working life of heaters and related parts.

Target flow temp.

(°C )

(h)

• Range of outdoor ambient temperature at which cold weather function starts is −30°C to −10°C (default −15°C).

• System shall automatically return to routine operation. This will happen when the outdoor ambient temperature rises above the selected temp for this specific mode of operation.

(g)

45

40

(d)

(e)

35

(c)

(b)

Floor dry up function

The Floor dry up function automatically changes the target hot water temperature in stages to gradually dry concrete when this particular type of underfloor heating system is installed.

(f)

30

0 1 2 3 4 5 6 7 8 9 101112131415161718

Days

Upon completion of the operation the system stops all the operations except the

Freeze stat. operation.

For Floor dry up function, the target flow temp. of Zone1 is the same as that of

Zone2.

• This function is not available when a PUHZ-FRP outdoor unit is connected.

• Disconnect wiring to external inputs of room thermostat, demand control, and outdoor thermostat, or the target flow temperature may not be maintained.

Functions

Floor dry up function

Flow temp.

(increase)

Flow temp.

(decrease)

Target temperature

Flow temp. increase step

Increase interval

Flow temp. decrease step

Decrease interval

Start & Finish

Max. target temp.

Max. temp. period

Symbol Description a

Set the function to ON and power on the system using the main remote controller, and the dry up heating operation will start.

Option/Range Unit Default

On/Off — Off b c d e f g h

Sets the increase step of the target flow temperature.

Sets the period for which the same target flow temperature is maintained.

Sets the decrease step of the target flow temperature.

Sets the period for which the same target flow temperature is maintained.

Sets the maximum target flow temperature.

Sets the period for which the maximum target flow temperature is maintained.

+1 - +10

1 - 7

−1 - −10

1 - 7

Sets the target flow temperature at the start and the finish of the operation. 25 - 60

25 - 60

1 - 20

ºC day

ºC day

ºC

ºC day

+5

2

−5

2

30

45

5

33

5

System Set Up

<Energy monitor settings>

In this menu, all parameters required to record the consumed electrical energy and the delivered heat energy which is displayed on the main remote controller can be set. The parameters are an electric heater capacity, supply power of water pump and heat meter pulse.

Follow the procedure described in General Operation for the set up operation.

For Pump 1, *** can be also set besides this setting.

In the case *** is selected, the system acknowledges "factory fitted pump" is selected.

Refer to the section [Energy Monitor] in "3. Technical Information"

<External input settings>

Demand control(IN4)

The selection of “OFF”, whilst a signal is being sent to IN4, forcefully stops all the heat source operations and the selection of “Boiler” stops operations of heat pump and electric heater and performs boiler operation.

Outdoor thermostat (IN5)

The selection of “Heater”, whilst a signal is being sent to IN5, performs electric-heater-only operation and the selection of “Boiler” performs boiler operation.

<Password protection>

Password protection is available to prevent unauthorised access to the service menu by untrained persons.

Resetting the password

If you forget the password you entered, or have to service a unit somebody else installed, you can reset the password to the factory default of 0000.

1. From the main settings menu scroll down the functions until Service Menu is highlighted.

2. Press CONFIRM.

3. You will be prompted to enter a password.

4. Hold down buttons F3 and F4 together for 3 secs.

5. You will be asked if you wish to continue and reset the password to default setting.

6. To reset press button F3.

7. The password is now reset to 0000.

<Manual reset>

Should you wish to restore the factory settings at any time you should use the manual reset function. Please note this will reset ALL functions to the factory default settings.

<SD card>

The use of an SD memory card simplifies the main remote controller settings in the field.

*Ecodan service tool (for use with PC tool) is necessary for the setting.

Password input screen

Password verify screen

34

6

Service and Maintenance

The indoor hydrobox must be serviced once a year by a qualified individual. Servicing and maintenance of the outdoor unit should only be done by a Mitsubishi

Electric trained technician with relevant qualifications and experience. Any electrical work should be done by a tradesperson with the appropriate electrical qualifications. Any maintenance or ‘DIY’ fixes done by a non-accredited person could invalidate the Warranty and/or result in damage to the hydrobox and injury to the person.

Basic Troubleshooting for Hydrobox

The following table is to be used as a guide to possible problems. It is not exhaustive and all problems should be investigated by the installer or another competent person.

Users should not attempt to repair the system themselves.

At no time should the system be operating with the safety devices by-passed or plugged.

Fault symptom

Cold water at taps

(systems with DHW tank)

Heating system does not get up to set temperature.

The cooling system does not cool down to the set temperature.

(ONLY for ERSC models)

Possible cause

Scheduled control off period

All hot water from DHW tank used

Heat pump or electric heaters not working

Solution

Check schedule settings and change if necessary.

Ensure DHW mode is operating and wait for DHW tank to re-heat.

Contact installer.

Prohibit, schedule or holiday mode selected

Incorrectly sized radiators

The room in which the temperature sensor is located is at a different temperature to the rest of the house.

Battery problem *wireless control only

When the water in the circulation circuit is unduly hot,

Cooling mode starts with a delay for the protection of the outdoor unit.

Check settings and change as appropriate.

Contact installer.

Reposition the temperature sensor to a more suitable room.

Check the battery power and replace if flat.

Normal operation

When the outdoor ambient temperature is significantly low,

Cooling mode does not start running to avoid freezing of the water pipes.

The 3-way valve may have foreign objects in it, or hot water may flow to the heating side due to malfunctions.

If the freeze stat. function is not necessary, contact installer to change the settings.

Contact installer.

Heating emitter is hot in the DHW mode. (The room temperature rises.)

Schedule function inhibits the system from operating but the outdoor unit operates.

Pump runs without reason for short time.

Mechanical noise heard coming from hydrobox

Noisy pipework

Freeze stat. function is active.

Pump jam prevention mechanism to inhibit the build up of scale.

Heaters switching on/off

Air trapped in the system

Loose pipework

The system has overheated or overpressurised Water discharges from one of the relief valves

Small amounts of water drip from one of the relief valves.

Dirt may be preventing a tight seal in the valve

Normal operation no action necessary.

Normal operation no action necessary.

Normal operation no action required.

Try bleeding radiators (if present) If the symptoms persist contact installer.

Contact installer.

Switch off power to the heat pump and any immersion heaters then contact installer.

Twist the valve cap in the direction indicted until a click is heard. This will release a small amount of water flushing dirt from the valve. Be very careful the water released will be hot. Should the valve continue to drip contact installer as the rubber seal may be damaged and need replacing.

Make a note of the error code number and contact installer.

An error code appears in the main remote controller display.

The indoor or outdoor unit is reporting an abnormal condition

<Power failure>

All setting will be saved for 1 week with no power, after 1 week Date/Time ONLY will be saved.

For more details, refer to the service manual.

<Draining the hydrobox>

WARNING: DRAINED WATER MAY BE VERY HOT

1. Before attempting to drain the hydrobox islolate from the electrical supply to prevent booster heater burning out.

2. Isolate hydrobox from primary water circuit and drain water from hydrobox. Use a suitable heat resistant hose to assist in these operations.

3. Drain any remaining water from booster heater using fitted drain cock and hose to safely drain the unit.

4. After the hydrobox is drained, water remains in the following component parts. Drain water completely by checking the inside of the parts.

• Strainer (Remove the strainer cover.)

• Pressure relief valve (Operate the valve.)

35

6

Service and Maintenance

Error Codes

Code

L3

Error

Circulation water temperature overheat protection

Action

Flow rate may be reduced check for;

• Water leakage

• Strainer blockage

• Water circulation pump function (Error code may display during filling of primary circuit, complete filling and reset error code.)

Check the immersion heater and it’s contactor.

L4

L5

L6

L8

L9

LC

LD

LE

LF

LH

LJ

LL

J0

P1

P2

P6

J1 - J8

E9

U*, F*

DHW tank water temperature overheat protection

Indoor unit temperature thermistor (THW1, THW2, THW5, THW6, THW7, THW8,

THW9) failure

Circulation water freeze protection

Heating operation error

Low primary circuit flow rate detected by flow sensor or flow switch (flow switches 1, 2, 3)

Boiler circulation water temperature overheat protection

Boiler temperature thermistor (THWB1, THWB2) failure

Boiler operation error

Flow sensor failure

Boiler circulation water freeze protection

DHW operation error (type of external plate HEX)

Setting errors of DIP switches on FTC control board

Communication failure between FTC and wireless receiver

Thermistor (Room temp.) (TH1) failure

Thermistor (Ref. liquid temp.) (TH2) failure

Anti-freeze protection of plate heat exchanger

Communication failure between wireless receiver and wireless remote controller

E0 - E5 Communication failure between main remote controller and FTC

E6 - EF Communication failure between FTC and outdoor unit

Outdoor unit receives no signal from indoor unit.

Outdoor unit failure

Check resistance across the thermistor.

See Action for L3.

Re-attach any thermistors that have become dislodged.

See Action for L3. If the flow sensor or flow switch itself does not work, replace it.

Caution: The pump valves may be hot, please take care.

Check if the setting temperature of the Boiler for heating exceeds the restriction. (See the manual of the thermistors "PAC-TH011HT-E")

Flow rate of the heating circuit from the boiler may be reduced. Check for

• water leakage

• strainer blockage

• water circulation pump function

Check resistance across the thermistor.

See Action for L8. Check the status of the boiler.

Check flow sensor cable for damage or loose connections.

Flow rate of the heating circuit from the boiler may be reduced. Check for

• water leakage

• strainer blockage

• water circulation pump function

• Check for disconnection of DHW tank water temp. thermistor (THW5).

• Flow rate of the sanitary circuit may be reduced.

• Check for water circulation pump function.

For boiler operation, check that DIP SW1-1 is set to ON (With Boiler) and

DIP SW2-6 is set to ON (With Mixing Tank).

For 2-zone temperature control, check DIP SW2-7 is set to ON (2-zone) and DIP SW2-6 is set to ON (With Mixing Tank).

Check connection cable for damage or loose connections.

Check resistance across the thermistor.

Check resistance across the thermistor.

See Action for L3.

Check for correct amount of refrigerant.

Check wireless remote controller’s battery is not flat.

Check the pairing between wireless receiver to wireless remote controller.

Test the wireless communication. (See the manual of wireless system)

Check connection cable for damage or loose connections.

Check that the outdoor unit has not been turned off.

Check connection cable for damage or loose connections.

Refer to outdoor unit service manual.

Check both units are switched on. Check connection cable for damage or loose connections. Refer to outdoor unit service manual.

Refer to outdoor unit service manual.

Note: To cancel error codes please switch system off (Press button E, on main remote controller, for 3 secs).

36

6

Service and Maintenance

Annual Maintenance

It is essential that the hydrobox is serviced at least once a year by a qualified individual any spare parts required MUST be purchased from Mitsubishi Electric (safety matter).

NEVER bypass safety devices or operate the unit without them being fully operational.

Note:

Within the first couple of months of installation, remove and clean the hydrobox’s strainer plus any that are fitted external to the hydrobox. This is especially important when installing on an existing system.

In addition to annual servicing it is necessary to replace or inspect some parts after a certain period of system operation. Please see tables below for detailed instructions.

Replacement and inspection of parts should always be done by a competent person with relevant training and qualifications.

Parts which require regular replacement

Parts

Pressure relief valve (PRV)

Air vent (Auto/Manual)

Drain cock (Primary circuit)

Manometer

Replace every Possible failures

6 years Water leakage

Parts which require regular inspection

Parts

Immersion heater

Water circulation pump

Check every

2 years

Possible failures

Earth leakage causing circuit breaker to activate

(Heater is always OFF)

Parts which must NOT be reused when servicing

* O-ring

* Gasket

Note:

Always replace the gasket for pump with a new one at each regular maintenance

(every 20,000 hours of use or every 3 years).

37

6

Service and Maintenance

Engineers Forms

Should settings be changed from default, please enter and record new setting in ‘Field Setting’ column. This will ease resetting in the future should the system use change or the circuit board need to be replaced.

Commissioning/Field settings record sheet

Field setting Notes Main remote controller screen

Main

Option

Setting DHW *13

Legionella prevention *13

Heating/ Cooling *12

Compensation curve

Holiday

Initial settings

Service menu

Hi flow temp. set point

Lo flow temp. set point

Adjust

Zone1 heating room temp.

Zone2 heating room temp. *14

Zone1 heating flow temp.

Zone2 heating flow temp. *1

Zone1 cooling flow temp. *12

Zone2 cooling flow temp. *12

Zone1 heating compensation curve

Zone2 heating compensation curve *1

Holiday mode

Forced DHW operation

DHW

Heating/Cooling

Energy monitor

Operation mode

DHW max. temp.

DHW temp. drop

DHW max. operation time

DHW mode restriction

Active

Hot water temp.

Frequency

Start time

Max. operation time

Duration of maximum temp.

Zone1 operation mode

Zone2 operation mode *1

Zone1 outdoor ambient temp.

Zone1 flow temp.

Zone2 outdoor ambient temp. *1

Zone2 flow temp. *1

Zone1 outdoor ambient temp.

Zone1 flow temp.

Zone2 outdoor ambient temp. *1

Zone2 flow temp.

Zone1 outdoor ambient temp.

Zone1 flow temp.

Zone2 outdoor ambient temp. *1

Zone2 flow temp. *1

DHW *13

Heating/ Cooling *12

Zone1 heating room temp.

Zone2 heating room temp. *14

Zone1 heating flow temp.

Zone2 heating flow temp. *1

Zone1 cooling flow temp. *12

Zone2 cooling flow temp. *12

Language

°C/°F

Summer time

Temp. display

Time display

Room sensor settings for Zone1

Room sensor settings for Zone2 *1

Room RC zone select *1

Thermistor adjustment

Auxiliary settings

THW1

THW2

THW5

THW6

THW7

THW8

THW9

THWB1

THWB2

Economy settings for pump.

Electric heater

(Heating)

Electric heater

(DHW) *13

Mixing valve control

Flow sensor

Parameters

10°C - 30°C

10°C - 30°C

25°C - 60°C

25°C - 60°C

5°C - 25°C

5°C - 25°C

−9°C - + 9°C

−9°C - + 9°C

Active/Non active/Set time

On/Off

On/Off/Timer

On/Off/Timer

Consumed electrical energy/Delivered energy

Normal/Eco

40°C - 60°C *2

Default setting

20°C

20°C

45°C

35°C

15°C

20°C

0°C

0°C

—

—

On

On

—

Normal

50°C

5°C - 30°C

30 - 120 mins

30 - 120 mins

Yes/No

60°C - 70°C *2

1 - 30 days

00.00 - 23.00

1 - 5 hours

10°C

60 mins

30 mins

Yes

65°C

15 days

03.00

3 hours

1 - 120 mins

Heating room temp/ Heating flow temp/ Heating

30 min

Room temp compensation curve/ Cooling flow temp

Heating room temp/ Heating flow temp/ Heating Compensation curve compensation curve/ Cooling flow temp

−30°C - +33°C *3

25°C – 60°C

−30°C - +33°C *3

25°C - 60°C

−28°C - +35°C *4

25°C - 60°C

−28°C - +35°C *4

25°C - 60°C

−29°C - +34°C *5

25°C - 60°C

−29°C - +34°C *5

25°C - 60°C

Active/Non active

Active/Non active

10°C - 30°C

10°C - 30°C

25°C - 60°C

25°C - 60°C

5°C - 25°C

5°C - 25°C

EN/FR/DE/SV/ES/IT/DA/NL/FI/NO/PT/BG/PL/CS/

−15°C

50°C

−15°C

40°C

35°C

25°C

35°C

25°C

—

—

—

—

Non active

Active

15°C

15°C

35°C

25°C

25°C

25°C

EN

RU

°C/°F

On/Off

°C

Off

Room/DHW tank/Room&DHW tank /Off hh:mm/hh:mm AM/AM hh:mm

TH1/Main RC/Room RC1-8/“Time/Zone”

TH1/Main RC/Room RC1-8/“Time/Zone”

Zone1/Zone2

Off hh:mm

TH1

TH1

Zone1

−10°C - +10°C

−10°C - +10°C

−10°C - +10°C

−10°C - +10°C

−10°C - +10°C

−10°C - +10°C

−10°C - +10°C

−10°C - +10°C

−10°C - +10°C

On/Off *6

Delay

Space heating: On (used)/Off (not used)

Electric heater delay timer (5 - 180 mins)

Booster heater

Immersion heater

DHW: On (used)/Off (not used)

DHW: On (used)/Off (not used)

Electric heater delay timer (15 - 30 mins)

Running (10 - 240 secs)

Interval (1 - 30 mins)

Minimum(0

Maximum(0

- 100L/min.)

-

100L/min.)

0°C

0°C

0°C

0°C

0°C

0°C

0°C

0°C

0°C

On

10 mins

On

30 mins

On

On

15 mins

120 secs

2 mins

5 L/min.

100 L/min.

*1 The settings related to Zone2 can be switched only when 2 Zone temperature control is enabled (when DIP SW2-6 and SW 2-7 are ON).

*2 For the model without both booster and immersion heater, it may not reach the set temperature depending on the outside ambient temperature.

*3 The lower limit is -15°C depending on the connected outdoor unit.

*4 The lower limit is -13°C depending on the connected outdoor unit.

*5 The lower limit is -14°C depending on the connected outdoor unit.

38

6

Service and Maintenance

Engineers Forms

Commissioning/Field settings record sheet (continued from the previous page)

Main remote controller screen

Service menu

Parameters

Pump speed

Heat source setting

Operation settings

Heating operation

*8

Flow temp.range

*10

Min.temp.(25 - 45°C)

Max.temp.(35 - 60°C)

Room temp.control Mode(Normal/Fast)

Interval(10 - 60min.)

Heat pump thermo diff.adjust

Freeze stat function *11

Simultaneous operation (DHW/Heating)

Pump speed(1 - 5)

Standard/Heater/Boiler/Hybrid *7

On/Off *6

Lower limit(-9 - −1°C)

Upper limit(+3 - +5°C)

Outdoor ambient temp. (3 - 20°C) / **

On/Off *6

setting

5

Standard

30°C

50°C

Normal

10min.

On

-5°C

5°C

5°C

Off

Cold weather function

Boiler operation

Floor dry up function

Outdoor ambient temp. (−30 - +10°C) *4 −15°C

On/Off *6

Outdoor ambient temp. (−30 - −10°C) *4

Hybrid settings Outdoor ambient temp. (−30

- +10°C) *4

Intelligent settings

Priority mode (Ambient/

Cost/CO

Energy price

*9

CO

2 emission

Heat source

2)

Electricity (0.001 -

999 */kWh)

Boiler (0.001 -

999 */kWh)

Electricity

(0.001 - 999 kg

-CO2/kWh)

Boiler (0.001 -

999 kg -CO2/ kWh)

Heat pump capacity

(1 - 40 kW)

Boiler efficiency

(25 - 150%)

On/Off *6

Target temp.

Flow temp.

(Increase)

Off

−15°C

−15°C

Ambient

0.5 */kWh

0.5 */kWh

0.5 kg -CO2/kWh

0.5 kg -CO2/kWh

11.2 kW

80%

Booster heater 1 capacity

(0 - 30 kW)

Booster heater 2 capacity

(0 - 30 kW)

2 kW

4 kW

Start&Finish (25 - 60°C)

Max. temp. (25 - 60°C)

Max. temp. period (1 - 20 days)

Off

30°C

45°C

5 days

Temp. increase step (+1 - +10°C) +5°C

Increase interval (1 - 7 days) 2 days

Flow temp.

(Decrease)

Temp. decrease step (−1 - −10°C) −5°C

Decrease interval (1 - 7 days) 2 days

0 - 30kW 2kW Energy monitor settings

External input settings

Electric heater capacity

Water pump input

Electric energy meter

Heat meter

Demand control (IN4)

Booster heater 1 capacity

Booster heater 2 capacity

Immersion heater capacity

Delivered energy adjustment

Pump 1

Pump 2

Pump 3

Outdoor thermostat (IN5)

0 - 30kW

0 - 30kW

−50 - +50%

0 - 200W or ***(factory fitted pump)

0 - 200W

0 - 200W

0.1/1/10/100/1000 pulse/kWh

0.1/1/10/100/1000 pulse/kWh

Heat source OFF/Boiler operation

Heater operation/Boiler operation

4kW

0kW

0%

***

0W

0W

1 pulse/kWh

1 pulse/kWh

Boiler operation

Boiler operation

*6 On: the function is active; Off: the function is inactive.

*7 When DIP SW1-1 is set to OFF “WITHOUT Boiler” or SW2-6 is set to OFF “WITHOUT Mixing tank”, neither Boiler nor Hybrid can be selected.

*8 Valid only when operating in Room temp. control mode.

*9 “*” of “*/kwh” represents currency unit (e.g. € or £ or the like)

*10 Valid only when operating in Heating room temperature.

*11 If asterisk (**) is chosen freeze stat function is deactived. (i.e. primary water freeze risk)

*12 Cooling mode settings are available for ERS * model only.

*13 Only availavle if DHW tank present in system.

*14 The settings related to Zone2 can be switched only when 2-zone temperature control or 2-zone valve ON/OFF control is active.

39

7

Supplementary information

Refrigerant collecting (pumpdown) for split model systems only

Refer to “Refrigerant collection” in the outdoor unit installation manual or service manual.

Back-up operation of boiler

Heating operation is backed up by boiler.

For more details, refer to the installation manual of PAC-TH011HT-E.

<Installation & System set up>

1. Set DIP-SW 1-1 to ON "With boiler" and SW2-6 to ON “With Mixing tank”.

2. Install the thermistors THWB1 (Flow temp.) and THWB2 (Return temp.) *1 on the boiler circuit.

3. Connect the output wire (OUT10: Boiler operation) to the signal input (room thermostat input) on the boiler. *2

4. Install one of the following room temp. thermostats. *3

Wireless remote controller (option)

Room temp. thermostat (local supply)

Main remote controller (remote position)

*1 The boiler temperature thermistor is an optional part.

*2 OUT10 has no voltage across it.

*3 Boiler heating is controlled on/off by the room temp. thermostat.

<Main remote controller settings>

1. Go to Service menu > Heat source setting and choose “Boiler” or “Hybrid”. *4

2. Go to Service menu > Operation settings > Boiler settings to make detailed settings for “Hybrid” above .

*4 The “Hybrid” automatically switches heat sources between Heat pump (and Electric heater) and boiler.

Multiple outdoor units control

To realize bigger systems by using multiple outdoor units, up to 6 units of the same model can by connected.

The hydrobox can be used as a slave unit for multiple outdoor unit control.

For more details, refer to the installation manual of PAC-IF061/062B-E.

PAC-IF051/052B-E can not be connected to the hydro box.

Check the model name of connecting master unit.

<DIP switch setting>

• Set DIP SW4-1 to ON “Active: multiple outdoor unit control”.

• Keep DIP SW4-2 OFF (default setting) (master/slave setting: slave).

• Set DIP SW1-3 to ON when the hydrobox is connected to a DHW tank.

40

Installers: Please be sure to put your contact address/telephone number on this manual before handing it to the customer.

RG79D954H02

HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN

Authorized representative in EU: MITSUBISHI ELECTRIC EUROPE B.V.

HARMAN HOUSE, 1 GEORGE STREET, UXBRIDGE, MIDDLESEX UB8 1QQ, U.K.

This product is made by Mitsubishi Electric Air Conditioning Systems Europe Ltd.: NETTLEHILL Rd, HOUSTOUN IND ESTATE,

LIVINGSTON, EH54 5EQ, UK

Printed in the UNITED KINGDOM