Sunex DROPS D4.1 Operating Manual And Assembly

DROPS

D4.1

Air / Water
Heat Pump

Operating manual and assembly

Version 1.2 19012017
Effect from serial number: 164010111

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Table of contents

1. Description of Heat Pump 4

2. Construction of Heat Pump 4

3. Installation of Heat Pump 5

3.1 Precautions during installation of the device 5

3.2 Installation recommendations 5

3.3 Connection of hydraulic circuit 5

3.4 Connection of air ducts 5

3.5 Electrical connection 7

3.6 Installation diagram 7

4. Description of controller functions 7

4.1 Control of actuators 8

4.2 Safety 8

4.3 Clock settings 8

4.4 Date settings 8

4.5 Screen settings 8

4.5.1 Screen brightness 8

4.5.2 Screen saver brightness 8

4.6 Programme information 8

5. Installer menu 8

5.1 Tank set point temperature 8

5.2 Anti-freezing 8

5.3 Weekly schedule active 9

5.4 Weekly control of heat pump operation with different levels of temperature 9

5.5 Circulation pump 9

5.6 Language 9

5.7 Service menu 9

5.8 Manual operation 11

5.9 LEGIONELLA settings 11

5.9.1 LEGIONELLA temperature 11

5.9.2 LEGIONELLA duration 11

5.9.3 Maximum LEGIONELLA time 11

5.9.4 LEGIONELLA reminder 11

5.10 Evaporator defrost 11

5.11 Minimum operating temperature 11

5.12 Hysteresis of minimum operating temperature 12

5.13 Heater operation below minimum operating temperature 12

5.13.1 Hysteresis of set point temperature 12

5.13.2 ECO-ECO PLUS threshold temperature 12

5.13.3 Hysteresis of ECO-ECO PLUS threshold 12

5.14 Installation protection 12

5.15 Emergency temperature 12

5.16 Delay compressor 12

5.17 Clear alarm of control temperature 12

5.18 Edit service phone number 12

5.19 Change service code 12

5.20 Factory settings 12

5.21 Sleep Mode 13

6. Security and Alarms 13

7. Maintenance 13

8. SG Ready function 13

9. The procedure after the shelf life of the device 13

10. Hydraulic diagrams 14

10.1 Refrigerant circuit illustration 16

11. Technical data 17

12. Start-up protocol ( 19

13. Start-up protocol ( 21

Copy for the Investor)
Copy for the Manufacturer)

Heat pump DROPS D4.1 is a device for utility water heating. It uses the rotary compressor optimised for high
condensation temperatures, i.e. High heating temperatures of utility water. The air flow via the finned coil is forced by
modern, powerful and energy efficient EBM PAPST fan. Water heating is in the SWEP plate exchanger of stainless
steel, and a water circulation is forced by the installed in the heat pump the WILO circulating pump adapted also to work
directly with utility water. The correct operation of the heat pump is ensured by the controller with algorithm optimized for
the heat pump DROPS D4.1 construction. The housing is made of ABS plastic. All the above mentioned
characteristics/components comprise the high quality and efficiency of the heat pump.

Any operations not described in this manual must be carried out in accordance with the accepted rules of installation
knowledge.

1. Description of Heat Pump

2. Construction of Heat Pump

Control panel

Air inlet

Air outlet

Hot water outlet

Cold water inlet

The power cord is located on the back of the unit

Air outlet Air inlet

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The heat pump DROPS D4.1 should be installed in a room where the temperature does not drop below + 5°C. Where
there is a risk of the temperature drop below 5°C, drain the water circulation between the heat pump and the storage
tank and blow out well the installation, e.g. with compressed air.

Level the heat pump during the assembly with the legs of adjustable height. Failure to comply with this
recommendation may result in a defective work and eventually damage to the equipment.

Keep away from divisions (walls ceilings etc.) for smooth maintenance work on the pump heat.

In the lower part of the pump heat housing there is a condensate discharge nozzle to which the hose outlet should be
connected. It is recommended to drain the condensate to the sewage system and to use a siphon.

The heat pump has a built-in automatic air vent that ensures the condenser venting and also the whole heating loop.

The pipeline between the heat pump and the storage tank must have an internal diameter of 20 mm.

On the water return to the heat pump pipeline install an angled filter!!!

The pipelines should be isolated on the whole length!!!

The heat pump has two connectors for connecting the air ducts. The internal diameter of the air ducts must be min.
200mm.
The maximum lengths of the air tubes: 8m

In case of connecting air ducts outside a building one should protect against the air circulation in the winter/
period of sub-zero conditions, when the heat pump is excluded from use.

Installation of the heat pump should be carried out by a person with appropriate qualifications in the field of heating and
cooling devices.

During the installation, one should observe the health and safety regulations which applies in a given country.

3. Installation of Heat Pump

3.2. Installation recommendations

3.3. Connection of hydraulic circuit

3.4. Connection of air ducts

3.1. Connection of air ducts

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AIR ABSORBED FROM ONE ROOM AND DISCHARGED INTO
ANOTHER ONE

AIR ABSORBED FROM THE ROOM AND DISCHARGED
OUTSIDE THROUGH THE WALL

OUTSIDE
AIR

INSIDE
ROOM

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Note: Furthermore the air intake and discharge is allowed from the room in which the pump is installed. But it can result
in reduced energy efficiency.

HEAT PUMP COOPERATING WITH RECUPERATOR

AIR ABSORBED FROM OUTSIDE THROUGH WALL
AND DISCHARGED OUTSIDE THROUGH ROOF

INSIDE ROOM

OUTSIDE
AIR

DISTRIBUTION OF AIR INLET AND DISCHARGED

OUTSIDE
AIR

OUTSIDE
AIR

THROTTLE THROTTLE

INTERNAL

ROOM 1

INTERNAL

ROOM 2

AIR ABSORBED FROM OUTSIDE THROUGH WALL AND
DISCHARGED OUTSIDE THROUGH WALL

OUTSIDE
AIR

OUTSIDE
AIR

OUTSIDE

AIR

OUTSIDE

AIR

AIR SUPPLIED TO

3

ROOMS 150 - 250 m /h

AIR DISCHARGED
FROM ROOMS

Heat pump and recuperative central are working independently of another one so that's why air ducts also
should be separated. The point is, that in time when recuperative is working, but heat pump isn't working this
air freely flow to ventilation box, but not to the heat pump. This would reduce efficiency of the fan recuperative
central.

CHECK VALVE

THROTTLE VALVE

The heat pump is powered by 1~230V/50 Hz. As a standard it has a plug with a cable of 1.5 m length.

Important: It is recommended that the electric supply circuit of the heat pump was equipped in the circuit breaker of the
characteristic C and residual current device with rated differential current transmission of 0.03A.

Note: All work related with the installation of these elements should be performed by personnel with the appropriate
permissions and qualifications.

3.5 Electrical connection

3.6 Installation diagram

4. Description of controller functions

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HEATER

VENTILATOR

COMPRESSOR

TANK PUMP

HIGH
PRESSURE
SWITCH

LOW
PRESSURE
SWITCH

SG
SWITCH

EXTERNAL
SENSOR

TANK
SENSOR

CONTROL
SENSOR

EVAPORATOR
SENSOR

DEFROST VALVE

CIRCULATION

PUMP

1

5

4

3

2

6 7 8

9

10

11

12

13

14

1. Evaporator temperature

2. External temperature

3. Control temperature

4. Enter the controller menu

5. Heat pump operation mode

6. Current tank temperature

7. ECO / ECO PLUS mode

8. STANDBY mode icon

9. Current time and day of the week

10. Tank pump icon

11. Circulating pump icon

12. Defrost mode icon

13. Heater icon

14. Pre-set tank temperature

Installer menu

Tank set point temperature

Anti-freezing

Weekly schedule active

Weekly schedule

Circulation pump

Language

Service menu

The controller controls the operation of the compressor, ventilator, integrated circulation pump, additional circulation
pump and electrical heater. The compressor is activated with a delay in relation to the circulation pump and ventilator ­compressor delay parameter.
The electrical heater operates above the ECO-PLUS temperature and in the event of a breakdown.

For the protection of the device against unwanted changes in settings e.g. by children, you can activate the lock - to
operate the controller you must enter the access code.

After selecting the option of Active Protection the controller after a specified period of inactivity (setting Lock Delay)
locks access to the menu functions of the controller. To unlock the driver must enter the four digit code which can be
defined in the PIN Code Change option.

The option allows you to set the current time.

The option allows you to set the current date.

The function allows you to define the brightness of the display during the edit and view of the controller functions in the
range of 10-100%.

The function allows you to define the brightness of the display during the dimming, which is activated in 30 seconds
after the end of the edit and view of the controller functions in the range of 5-100%.

The function allows you to preview the controller information - name of the manufacturer, software number, and service
telephone number.

This function is used to set the tank set-point temperature. The ventilator, the compressor and the pump work until the
tank setpoint temperature is reached.

With this function the user specifies anti-freezing operations, which serve to protect the installation against freezing.
When the temperature drops below a certain temperature threshold (factory set limit is 5°C) the heat pump or the heater
engages permanently; it disengages when the temperature in the circuit reaches a value of temperature threshold

4.1 Control of actuators

4.2 Security

4.3 Clock settings

4.4 Date settings

4.5 Screen brightness

4.5.1 Screen brightness

4.5.2 Screen brightness

4.6 Programme information

5.1 Tank set point temperature

5.2 Anti-freezing

5 Installer menu

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