DE DIETRICH MIT User Manual

Interior hydraulic module

MIT iSystem

User Guide

300028952-001-01

Contents

1 Introduction ................................................................................................4

1.1 Symbols used .......................................................4

1.1.1 Symbols used in the manual ...................................4

1.1.2 Symbols used on the equipment .............................4

1.2 Abbreviations ........................................................5

1.3 General ..................................................................5

1.3.1 Manufacturer's liability .............................................5

1.3.2 Installer's liability .....................................................6

1.3.3 User's liability ..........................................................6

1.4 Homologations ......................................................6

1.4.1 Certifications ...........................................................6

2 Safety instructions and recommendations ..............................................7

2.1 Safety instructions ...............................................7

2.2 Recommendations ................................................7

3 Description ..................................................................................................8

3.1 General description ..............................................8

3.2 Control panel .........................................................8

3.2.1 Description of the keys ............................................8

3.2.2 Description of the display ........................................9

3.2.3 Browsing in the menus ..........................................12

4 Operating the appliance ..........................................................................14

4.1 Putting the appliance into operation ................14

4.2 Reading out measured values ...........................15

4.3 Changing the settings ........................................16

4.3.1 Setting the set point temperatures ........................16

4.3.2 Selecting the operating mode ...............................17

4.3.3 Forcing domestic hot water production .................18

4.3.4 Setting the contrast and lighting on the

display ...................................................................18

4.3.5 Setting the time and date ......................................19

4.3.6 Selecting a timer programme ................................19

4.3.7 Customising a timer programme ...........................20

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Contents

4.4 Installation shutdown .........................................22

4.5 Turning on the antifreeze function ....................22

5 Troubleshooting .......................................................................................23

5.1 Anti-hunting ........................................................23

5.2 Messages .............................................................23

5.3 Faults (Code type Lxx or Dxx) ...........................26

6 Technical specifications ..........................................................................28

6.1 Technical specifications ....................................28

6.1.1 Electricity supply ...................................................28

7 Energy savings .........................................................................................29

7.1 Energy savings ...................................................29

7.1.1 Energy-saving advice ............................................29

7.1.2 Room thermostat and settings ..............................29

7.2 Recommendations ..............................................29

8 Warranty ....................................................................................................31

8.1 General ................................................................31

8.2 Warranty terms ...................................................31

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1 2

M002628-A

MIT iSystem 1. Introduction

1 Introduction

1.1 Symbols used

1.1.1. Symbols used in the manual

In these instructions, various danger levels are employed to draw the user's attention to particular information. In so doing, we wish to safeguard the user's safety, obviate hazards and guarantee correct operation of the appliance.

DANGER

Risk of a dangerous situation causing serious physical injury.

WARNING

Risk of a dangerous situation causing slight physical injury.

CAUTION

Risk of material damage.

Signals important information.

¼ Signals a referral to other instructions or other pages in the instructions.

1.1.2. Symbols used on the equipment

Disconnect the mains power prior to any operations.

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Before installing and commissioning the device, read carefully the instruction manuals provided.

Dispose of the used products in an appropriate recovery and recycling structure.

1. Introduction

1.2 Abbreviations

MIT iSystem

4 DHW: Domestic hot water

4 PPS: Polypropylene hardly inflammable

4 PCU: Primary Control Unit - PCB contoller for heat pump operation

4 PSU: Parameter Storage Unit - Parameter storage for PCBs

PCU and SU

4 SCU: Secondary Control Unit - DIEMATIC iSystem control panel

PCB

4 SU: Safety Unit - Safety PCB

4 3WV: 3-way valve

4 EVU: Power supply company

4 MIT: Indoor module fitted with a DIEMATIC iSystem control panel

4 HP or PAC: Heat pump

4 EER: Frigorific efficiency ratio

4 COP: Performance coefficient

1.3 General

4 Supply temperature: Temperature of the water circulating in the

radiators or in the underfloor heating.

4 Ambient temperature: Temperature inside the house or in a room.

4 Room temperature instruction: Temperature programmed in the

control system that must be reached by the heat pump.

1.3.1. Manufacturer's liability

Our products are manufactured in compliance with the requirements of the various applicable European Directives. They are therefore

delivered with [ marking and all relevant documentation.

In the interest of customers, we are continuously endeavouring to make improvements in product quality. All the specifications stated in this document are therefore subject to change without notice.

Our liability as the manufacturer may not be invoked in the following cases:

4 Failure to abide by the instructions on using the appliance.

4 Faulty or insufficient maintenance of the appliance.

4 Failure to abide by the instructions on installing the appliance.

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MIT iSystem

1. Introduction

1.3.2. Installer's liability

The installer is responsible for the installation and inital start up of the appliance. The installer must respect the following instructions:

4 Read and follow the instructions given in the manuals provided

with the appliance.

4 Carry out installation in compliance with the prevailing legislation

and standards.

4 Perform the initial start up and carry out any checks necessary.

4 Explain the installation to the user.

4 If a maintenance is necessary, warn the user of the obligation to

check the appliance and maintain it in good working order.

4 Give all the instruction manuals to the user.

1.3.3. User's liability

To guarantee optimum operation of the appliance, the user must respect the following instructions:

1.4 Homologations

4 Read and follow the instructions given in the manuals provided

with the appliance.

4 Call on qualified professionals to carry out installation and initial

start up.

4 Get your installer to explain your installation to you.

4 To carry out inspections and maintenance required by a qualified

professional.

4 Keep the instruction manuals in good condition close to the

appliance.

This appliance is not intended to be used by persons (including children) whose physcial, sensory or mental capacity is impaired or persons with no experience or knowledge, unless they have the benefit, through the intermediary of a person responsible for their safety, of supervision or prior instructions regarding use of the appliance. Care should be taken to ensure that children do not play with the appliance.

1.4.1. Certifications

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This product complies to the requirements to the european directives and following standards:

4 2006/95/EC Low Voltage Directive. Reference Standards:

EN60335-1 / EN60335-2-40.

4 2004/108/EC Electromagnetic Compatibility Directive. Generic

standards: EN1000-6-3 , EN 61000-6-1.

2. Safety instructions and recommendations

2 Safety instructions and

recommendations

2.1 Safety instructions

DANGER

If smoke is released or in case of refrigerant leak:

1. Switch the appliance off.

2. Open the windows.

3. Evacuate the premises.

4. Contact a qualified professional.

MIT iSystem

2.2 Recommendations

CAUTION

Do not neglect to service the appliance. Contact a qualified professional or take out a maintenance contract for the annual servicing of the appliance.

WARNING

Only qualified professionals are authorised to work on the appliance and the installation.

4 Regularly check that the water pressure in the installation is

between 1,5 and 2 bar.

4 Ensure that the appliance is accessible at all times for

maintenance purposes.

4 Avoid draining the installation.

4 Use only original spare parts.

4 Never remove or cover labels and rating plates affixed to the

appliance. Labels and rating plates must be legible throughout the entire lifetime of the appliance.

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M002616-A

bar

STD

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

1 2

MIT iSystem 3. Description

3 Description

3.1 General description

The MIT module is fitted with a DIEMATIC iSystem control panel with integrated regulator. It handles the automatic operation of the heat pump as a function of:

4 The outside temperature.

4 The ambient temperature when the remote control (as an option)

is connected.

The DIEMATIC iSystem control panel enables:

4 The independent control of a direct circuit without mixing valve and

a circuit with mixing valve.

4 The independent control system on a DHW preparation circuit.

4 Anti-freeze protection for the installation and the environment if the

home is empty (This period may be programed up to 99 days).

3.2 Control panel

The MIT module also integrates the 30-litre buffer / pressure release tank and additional electrical heating (Only MIT/E).

3.2.1. Description of the keys

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Temperature setting key (heating, DHW, swimming pool)

L000200-A

L000201-A

L000198-A

L000199-A

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

C002696-A

AUTO

bar

STD

0 2 4 6 8 10 12 14 16 18 22 2420

L000197-A

AUTO

3. Description MIT iSystem

Operating mode selection key

DHW override key

Key to access the parameters reserved for the installer

Keys on which the function varies as and when selections are made

¼ See: "Key functions", page 9

Rotary setting button:

4 Turn the rotary button to scroll through the menus or

modify a value

4 Press the rotary button to access the selected menu

or confirm a value modification

3.2.2. Description of the display

Key functions

> ( '

Access to the various menus

Used to scroll through the menus

Used to scroll through the parameters

The symbol is displayed when help is available

STD

Used to display the curve of the parameter selected

Reset of the time programmes

Selection of comfort mode or selection of the days to be programmed

Selection of reduced mode or deselection of the days to be programmed

ESC

Back to the previous level

Back to the previous level without saving the modifications made

Solar (If connected)

Manual reset

The solar load pump is running

The top part of the tank is reheated to the tank set point

The entire tank is reheated to the tank set point

The entire tank is reheated to the solar tank set point

The tank is not loaded - Presence of the solar control system

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bar

STD

0 2 4 6 8 10 12 14 16 18 22 2420

M002620-A

AUTO

bar

STD

0 2 4 6 8 10 12 14 16 18 22 2420

C002698-B

AUTO

bar

STD

0 2 4 6 8 10 12 14 16 18 22 2420

C002708-A

AUTO

MIT iSystem 3. Description

Operating modes

w + p w

AUTO

Summer mode: Cooling is possible. Domestic hot water continues to be produced.

WINTER mode: Heating and domestic hot water working.

Forced cooling mode.

Cooling mode: Heating according to the time programme.

Operation in automatic mode according to the timer programme.

Comfort mode: The symbol is displayed when a DAY override (comfort) is activated.

4 Flashing symbol: Temporary override

4 Steady symbol: Permanent override

Reduced mode: The symbol is displayed when a NIGHT override (reduced) is activated.

4 Flashing symbol: Temporary override

4 Steady symbol: Permanent override

Holiday mode: The symbol is displayed when a HOLIDAY override (antifreeze) is activated.

4 Flashing symbol: Holiday mode programmed

4 Steady symbol: Holiday mode active

System pressure

bar

Manual mode

Pressure indicator: The symbol is displayed when a water pressure sensor is connected.

4 Flashing symbol: The water pressure is insufficient.

4 Steady symbol: The water pressure is sufficient.

Water pressure level

4 R : 0,9 to 1,1 bar 4 E : 1,2 to 1,5 bar 4 Z : 1,6 to 1,9 bar 4 A : 2,0 to 2,3 bar 4 l : > 2,4 bar

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