RHP Pro Air Handling Units

Product Information: RHP Pro

Specifications:

• Unit Types and Sizes:

  • Heat exchangers and heaters (or coolers) are designed to
    compensate for heat/cool losses during ventilation.

  • Not recommended as the main heating/cooling source.

  • Unit sizes: 10, 20, 30, 40, 50, 60, 70, 80, 90

  • Maximum air volume range: 3000-25000 m3/h

  • Maximum air volume may be limited based on project
    requirements.

• Unit Components and Sections:

  • Filter-Fan Section: Two filter-fan sections with electronic
    circuit board control.

  • Heat Pump Section: Integrated heat pump for heating and cooling
    modes with control electronics and automation box.

Product Usage Instructions:

1. Installation:

Refer to the installation manual for detailed instructions on
how to install the RHP PRO air handling units. Ensure that only
qualified professionals with sufficient experience and knowledge of
ventilation systems and electrical safety requirements perform the
installation.

2. Unit Transportation and Storage:

Before installation, ensure proper transportation and storage of
the unit. Follow the guidelines provided in the installation manual
for safe handling and storage.

3. Mechanical Installation:

Follow the mechanical installation instructions provided in the
manual to correctly install the air handling unit. This includes
connecting the necessary components and sections as per the
specific unit requirements.

FAQ:

Q: Can the RHP Pro be used as the main heating/cooling

source?

A: No, the RHP Pro is not recommended as the main
heating/cooling source. It is designed to compensate for heat/cool
losses during ventilation.

RHP Pro
INSTALLATION
EN
MANUAL

EN
CONTENT
1. INTRODUCTION …………………………………………………………………………………………………………………………………………………………………………………..3 1.1. Safety Requirements …………………………………………………………………………………………………………………………………………………………………….3 1.2. Unit Types and Sizes ……………………………………………………………………………………………………………………………………………………………………..4 1.3. Unit Components and Sections ………………………………………………………………………………………………………………………………………………….5 1.3.1. Filter-Fan Section ………………………………………………………………………………………………………………………………………………………………..5 1.3.2. Heat pump section……………………………………………………………………………………………………………………………………………………………..6 1.3.3. Recirculation Section………………………………………………………………………………………………………………………………………………………. 11 1.3.4. Cooler and Heater Sections……………………………………………………………………………………………………………………………………………. 12 1.3.5. Air Dampers ……………………………………………………………………………………………………………………………………………………………………… 13 1.3.6. Silencers ……………………………………………………………………………………………………………………………………………………………………………. 14 1.4. Inspection Sides…………………………………………………………………………………………………………………………………………………………………………. 15
2. UNIT TRANSPORTATION AND STORAGE…………………………………………………………………………………………………………………………………… 16 3. MECHANICAL INSTALLATION………………………………………………………………………………………………………………………………………………………. 18
3.1. Requirements for Mounting Location and Installation Base ………………………………………………………………………………………………. 18 3.2. Inspection Area …………………………………………………………………………………………………………………………………………………………………………. 20 3.3. Connection of Sections ……………………………………………………………………………………………………………………………………………………………. 21 3.4. Installation of External Heating/Cooling Devices…………………………………………………………………………………………………………………. 23 3.5. Connection of a Condensate Drain…………………………………………………………………………………………………………………………………………. 26 3.6. Connection to Air Ducts……………………………………………………………………………………………………………………………………………………………. 27 3.7. Outdoor Units …………………………………………………………………………………………………………………………………………………………………………….. 28 4. ELECTRICAL INSTALLATION …………………………………………………………………………………………………………………………………………………………. 31 4.1. Requirements for Electrical Connection ……………………………………………………………………………………………………………………………….. 31 4.2. Connection of Electrical Components……………………………………………………………………………………………………………………………………. 34 4.3. Control Panel Installation ………………………………………………………………………………………………………………………………………………………… 38 4.4. Connection of Cables and Wires Between Sections …………………………………………………………………………………………………………….. 39 4.5. Connecting the Unit to the Internal Computer Network or the Internet …………………………………………………………………………. 40 5. FILTERS ……………………………………………………………………………………………………………………………………………………………………………………………….. 42 6. COMMISSIONING AND INSPECTION OF THE UNIT………………………………………………………………………………………………………………… 43 6.1. Control panel C5.1……………………………………………………………………………………………………………………………………………………………………… 43 6.2. Starting the Unit With a Computer …………………………………………………………………………………………………………………………………………. 45 6.3. Calibration of Clean Filters ……………………………………………………………………………………………………………………………………………………….. 48 6.4. Quick Inspection………………………………………………………………………………………………………………………………………………………………………… 49 ANNEX NO. 1. ADJUSTMENT OF THE ROTARY HEAT EXCHANGER WHEEL………………………………………………………………………….. 50

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1. INTRODUCTION
This Installation Manual is intended for professionals, qualified to install RHP PRO air handling units. Qualified professionals are people with sufficient professional experience and knowledge of ventilation systems and installation thereof, knowledge of electrical safety requirements and having ability to perform works without endangering themselves or others.
See the KOMFOVENT website for user manuals.
1.1. Safety Requirements
To avoid misunderstandings, read this Instruction Manual carefully before installing air-handling unit. Only a qualified professional in accordance with the manufacturer’s instructions and applicable legal acts and safety requirements may install air-handling units. An air handling unit is an electrical-mechanical device that contains electrical and moving parts, therefore, disregarding instructions of this manual will void the manufacturer’s warranty and may also cause direct damage to property or human health.
· Before starting any tasks, make sure that the unit is unplugged from the mains. · Use caution when performing works near internal or external heaters as their surfaces may be hot. · Do not connect the unit to the mains unless all the external assemblies are installed completely. · Do not connect the unit to the mains in case of any visible damage incurred during transportation. · Do not leave foreign objects and tools inside the unit. · It is forbidden to operate air-handling units in areas with potentially explosive atmospheres. · Use appropriate safety equipment (gloves, goggles) when performing installation or repair works. · Heat pump system is filled with refrigerant (F-gas), therefore only qualified refrigeration systems’
specialists or “Komfovent” representative can perform any mechanical/electrical works on a heat pump. · Temperature of evaporating refrigerant is very low and causes severe frostbite in contact with skin, therefore use appropriate safety equipment (gloves, goggles).
This symbol indicates that this product may not be disposed of with your household waste as specified in WEEE Directive (2002/96/EC) and national laws. This product should be handed over to a designated collection point or to an authorised collection site for recycling waste electrical and electronic equipment (EEE). Improper handling of this type of waste could have a negative impact on the environment and human health due to potentially hazardous substances that are generally associated with electrical and electronic equipment. At the same time, your cooperation in the correct disposal of this product will contribute to the effective usage of natural resources. For more information about where you can drop off your waste equipment for further recycling, contact your city authorities, waste management organisations, approved WEEE scheme or your household waste disposal service.

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1.2. Unit Types and Sizes
An air-handling unit is a device designed to ensure good ventilation in the premises. An air- handling unit removes indoor air containing carbon dioxide, various allergens or dust, while replacing it with filtered fresh air from outside. As the outside air is usually colder or warmer than the air within the premises, an integrated recuperator (heat exchanger) collects thermal energy from the indoor air and transfers the majority of it to the supply air. When a recuperator is not capable of reaching a desired temperature, additional heaters or coolers may be activated.

Heat exchangers and heaters (or coolers) are designed to compensate for heat/cool losses during ventilation, therefore, we do not recommend using this unit as the main heating/cooling source. The unit may fail to reach a user- defined supply air temperature when the actual temperature in the premises differs significantly from the temperature set point, since this will lead to inefficient operation of a heat exchanger.

RHP ­ air handling units with a rotary heat exchanger and an integrated heat pump. Rotating wheel (rotor) of a rotary heat exchanger collects heat or cold from the indoor air and transfers it to the fresh supply air. Recovered heat/cold capacity is changed by adjusting the rotor speed. When heat recovery is not required, the wheel stops. If a heat exchanger alone is not capable of reaching a desired temperature, an integrated heat pump is activated. If heating/cooling capacity is still too low, additional heaters or coolers may be activated.1

Air damper

Fan

Heat pump refrigerant coil

Heat pump assembly

Filter

OUTDOORS INDOORS

Air damper

Filter

Rotary heat Heat pump

Fan

exchanger refrigerant coil

Heaters

Coolers

RHP PRO units come in several sizes. Each size is designed for a specific air volume range:

Unit size 10 20 30 40 50 60 70 80 90

Maximum air volume, m3/h 3000 4000 6000 8000 11000 15000 18000 22000 25000

Maximum air volume may be limited according to the order, for example, if lower power fans are used or higher air volume is not required by the project requirements. For exact maximum air volume see the technical data print-out of the specific unit.

1 Depends on configuration. 4

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1.3. Unit Components and Sections
RHP PRO air handling units are assembled from separate sections. Depending on the order and unit size, sections may be pre-assembled in a factory or transported separately. Type of each section is marked with a label attached to the section door. The following are the main sections of the air handling unit. For equipment and number of sections in each unit see the technical data print-out of the specific unit.
1.3.1. Filter-Fan Section
Air handling units have two filter-fan sections. Filter contamination is measured and fan is controlled by an electronic circuit board fitted in the same section.

1 1 2

3 2
3

4

5

Fig. 1. Filter-fan section 1 ­ fan assembly with an installation frame 2 ­ fan control board (C5_VM),
3 ­ bag filters, 4 ­ fan section label, 5 ­ filter section label

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1.3.2. Heat pump section
Air-handling units are equipped with an integrated heat pump operating both in heating and cooling modes. All heat pump components and a rotary heat exchanger are installed in a heat pump section. This section is also fitted with a heat pump control electronics and automation box to which many of the main electrical components are connected (see Chapter “Connection of Electrical Components”).

1
2 3 4 5 6
7 8
5

2

25

26

27

1 28

2 29

3 30

4 31

5 32

6 33

7 34

8 35

9 10 36

11

12 37

38

39

13 40

14 41

15 42

16 43

17 44

18 45

19 46

20 47

21 48

22

23

24

3

8

9

10

Fig. 2. Heat pump section 1 ­ main power switch, 2 ­ C5 controller main board, 3 ­ heat pump control electronics, 4 ­ rotary recuperator, 5 ­ condensate drainage pipes, 6 ­ heat pump assembly, 7 ­ rotor motor, 8 ­ frequency inverter for heat pump compressor,
9 ­ rotary recuperator marking label, 10 ­ heat pump section label

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Rotating drum of a rotary heat exchanger is belt driven by an electric motor with a gearbox. Brush seals are installed at the perimeter of a rotating drum and between airflows to prevent different airflows from mixing.
1 2 3 7
4

3 7

6 5 4
Fig. 3. Rotary heat exchanger assembly 1 ­ C5 controller main board, 2 ­ automatic circuit breakers, 3 ­ rotary wheel, 4 ­ motor with gearbox,
5 ­ pulley for rotor belt, 6 ­ rotor belt, 7 ­ sealing brushes

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A heat pump assembly consists of a piping system containing refrigerant, compressor, two radiators (condenser and evaporator) and separate control electronics. If air velocity in the air handling unit is high (> 2 m/s), optional drop eliminators are installed by the condenser and/or evaporator, which prevent condensate from entering other parts of the unit or air ducts.

8 11

16 HP
12

15
HPT EXV

13

14

8 10

8

8

9

7

SVR

2

SVD

DT

3

1

6 ST 4 LPT 5 LP

45

6 1 2
7

9 16

11

12

14

17

3

18

15

13

10
19 17 18

Fig. 4. Hydraulic circuit diagram and components of the heat pump 1 ­ Compressor, 2 ­ 4-way valve (SVR), 3 ­ Defrost valve (SVD),
4 ­ Low pressure transmiter (LPT), 5 ­ Low pressure pressostat (LP), 6 ­ Suction gas temperature sensor (ST), 7 ­ Discharge gas temperature sensor (DT), 8 ­ Check valve, 9 ­ Refrigerant coil positioned in the extract airflow,
10 ­ Refrigerant coil positioned in the supply airflow, 11 ­ liquid receiver, 12 ­ Filter-dryer, 13 ­ Sight glass, 14 ­ Electronic expansion valve (EXV), 15 ­ High pressure transmiter (HPT), 16 ­ High pressure pressostat (HP), 17 ­ condensate trays, 18 ­ condensate drainage pipes,
19 ­ drop eliminator

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Depending on the size of the unit, the heat pump unit may contain up to 3 independent circuits, each consisting of the same components (compressor, pipeline, valves and sensors). In such units, refrigerant coils (condenser and evaporator) of a heat pump also consist of several tiers, which are independent of each other, but the amount of refrigerant in the individual circuits is different. Heat pump model, number of circuits and exact amount of refrigerant is indicated in a label inside the unit.

Air handling unit model / Vdinimo renginio modelis

Heat pump model / Silumos siurblio modelis

Maximum operating pressure Maksimalus darbinis slgis

P max [bar]

Refrigerant / Saltnesis

Number of separate circuits / Atskir kontr skaicius

Quantity of refrigerant / Saltnesio kiekis

mR410A [kg]

RHP PRO 30
42 R410A
1 5,6

Hermeticaly sealed system / Hermetiska sistema
Contains fluorinated greenhouse gases covered by Kyoto Protocol Sudtyje yra Kioto protokole nurodyt fluorint siltnamio efekt sukelianci duj DO NOT VENT INTO ATMOSPHERE / NEISLEISTI APLINK R-410A Global Warming Potential (GWP)=1730 R-410A Globalinio siltjimo potencialas (GWP)=1730

Fig. 5. Example of a heat pump’s information label
Heat pump is activated automatically when a rotary heat exchanger is unable to reach desired temperature; and is switched off as soon as desired temperature is reached. Frequent starting and stopping of a heat pump may damage compressor, therefore, when heating/cooling demand is low, the heat pump will continue running for some time after the set temperature has been reached. In such cases, supplied air may be slightly warmer (in heating mode) or cooler (in cooling mode) than desired; however, the extracted temperature control mode will help to reduce such temperature fluctuations (see “User Instructions”).
A certain airflow is required to ensure proper operation of a heat pump, i. e. to ensure efficient heat exchange and maintain refrigerant pressure within limits. When airflow is reduced, the heat pump output is limited, and when airflow drops below minimum limit, compressor temporarily stops. Heat pump operation is resumed only when airflow increases, therefore, it is important to take these air volumes into account when designing a ventilation system or choosing additional functions:

RHP PRO size
10 20 30 40 50 60 70 80 90

Minimum airflow and hysteresis to start heat-pump, m3/h
900 ± 30 1800 ± 60 2700 ± 90 3600 ± 120 5000 ± 175 7000 ± 225 9000 ± 300 10000 ± 350 13000 ± 400

Minimum airflow and hysteresis to start heat-pump (C5 firmware
version 2.530 or later), m3/h 300 ± 30 600 ± 60 900 ± 90 1200 ± 120 1600 ± 175
2250 ± 225 3000 ± 300 3200 ± 350 3400 ± 400

Minimum airflow to allow full heat pump capacity, m3/h
1200 2400 3600 4800 7000 9000 12000 14000 16000

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100%

Heat pump capacity

20%

Limited heat pump capacity

Minimum airflow to start
heat-pump

Minimum airflow to allow full
capacity

Air volume

Fig. 6. Heat pump capacity limitation according airflow

Heat pump is not operating when outdoor air temperature is between 15°C and 20°C, as, in this case, the rotary heat exchanger is usually capable of reaching desired air temperature.
If heating/cooling demand increases when the heat pump is switched off, additional heaters/coolers are activated1.

When the heat pump is running, we recommend operating air handling units with the smallest possible air volume difference between the supply and extract airflows. In case of high flow imbalances (>20%), capacity and efficiency of the heat pump decreases, therefore the compressor operates at a critical refrigerant pressure limit. This results in reduced operating life and increased probability of failure.
During winter operation, when the heat pump is in heating mode, condensate on the evaporator starts freezing and forms frost. Large ice deposits block airflow in the evaporator and may damage the heat pump. Therefore, the evaporator is automatically defrosted during winter use. When the outdoor temperature drops below zero, the heat pump automation system starts constantly monitoring pressure difference upstream and downstream the evaporator heat exchanger. When condensate accumulates in heat exchanger plates and ice starts to form, pressure increases and defrosting actions are initiated. During the defrost cycle, part of the hot refrigerant gas is directed from the compressor to the evaporator to melt forming ice crystals, therefore supply air temperature temporarily drops. Integrated electric or auxiliary heaters are switched on to compensate for this change. As soon as frost melts and pressure decreases, all the power of the heat pump is redirected to the heating process.

1 Depends on configuration. 10

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1.3.3. Recirculation Section
Recirculation section is intended for mixing extract and supply air for heating or cooling thereof by reducing energy consumption of heaters/coolers.

1

1

2

2

3

Fig. 7. Recirculation section 1 ­ air mixing damper, 2 ­ damper actuator, 3 ­ recirculation section label

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1.3.4. Cooler and Heater Sections
Cooler section is fitted with water or direct evaporation (DX) coolers as well as combined heater/cooler heat exchangers. Cooling air causes condensation, therefore, a condensate tray is installed under a heat exchanger. If air velocity in the air handling unit is high (> 2 m/s), an optional drop eliminator is installed, which prevents condensate from entering other parts of the unit or air ducts.

2

1

1 2 3

4

3

Fig. 8. Cooler section 1 ­ drop eliminator, 2 ­ coil for water/refrigerant 3 ­ condensate tray,
4 ­ cooler section label
Depending on the order, electric or water heaters may be selected. An electric heater section is fitted with heater control electronics and the main circuit breaker (see Chapter “Requirements for Electrical Connection”). A water heater is fitted with a return water temperature sensor, which protects the heat exchanger against freezing. Sensor installation procedure is described in Chapter “Installation of External Heating/Cooling Devices”.

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1

2

ON

OFF

Fig. 9. Heater section 1 ­ electric heater section and label, 2 ­ water heater section and label
1.3.5. Air Dampers
Air dampers are mounted on the outside of the unit and are fastened with self- tapping screws. Air dampers are designed to isolate the unit and to protect against air flows and draughts when the unit is stopped. Damper blades are closed/opened with an electric actuator (24 V AC), the power and torque of which is selected according to a damper size. Rectangular air ducts may be connected directly to dampers (see Chapter “Connection of Air Ducts”). For outdoor installation, air dampers with electric actuators must be protected against environmental influences with special covers or other structures.
1
1
2
2

Fig. 10. Air closing dampers 1 ­ air damper, 2 ­ electric damper actuator

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1.3.6. Silencers
Noise suppressor sections are intended for reducing noise generated by an air handling unit and air flows. Depending on the unit type and location of a silencer section, suppressor sections may be separate for each air flow (e.g., for supply air only) or double, intended for both air flows. Silencer section is equipped with noise absorbing partitions which can be removed and cleaned during inspection works. Silencer section may also be equipped with an optional compact filter.

1

Fig. 11. Noise suppressor section 1 ­ removable noise absorbing partitions, 2 ­ silencer section label

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1.4. Inspection Sides
Depending on the installation position and connection of air ducts, RHP PRO air handling units are available in four inspection sides. Inspection side is determined by a supply air duct (SUP) position:
L1 Air duct for supply air connected on the left bottom side of the unit

ETA

EHA

SUP

ODA

L2 Air duct for supply air connected on the left upper side of the unit SUP ETA

R1 Air duct for supply air connected on the right bottom side of the unit

EHA

ETA

ODA

R2 Air duct for supply air connected on the right upper side of the unit

ODA

EHA

ETA

ODA EHA
SUP SUP

ODA

­ outdoor air

SUP

­ supply air

ETA

­ extract air

EHA

­ exhaust air

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2. UNIT TRANSPORTATION AND STORAGE
Units must be transported and stored in their original packaging. During transportation, units must be properly fixed and additionally protected against possible mechanical damage, rain or snow. Only an employee qualified to operate a forklift truck or crane and familiar with the principles of cargo lifting and safety requirements, must perform unloading or lifting operations. When a forklift is used for lifting or transporting the unit, forks must be long enough to prevent the device from tipping over or to avoid mechanical damage to its bottom part.
Max. 4 m

Max. 2 m

L L

Fig. 12. Unit transportation using a forklift or a trolley
Individual sections of the unit shall be lifted with an installation frame. Pipes should be inserted through the mounting frame into designated openings and lifting ropes or belts fixed. It must be ensured that belts will not disconnect or pipes will not be pulled out of the frame when lifting.

Max. 60°

Max. 60°

x2

Fig. 13. Lifting of individual sections1

1 Lifting means (pipes, belts, ropes, traverses) are not included. 16

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Fully assembled RHP PRO 10-70 size units can be lifted by crane only if there are no additional sections connected (for example: heaters, coolers, silencers). Units of other sizes or units with connected additional sections can be lifted only when it`s fixed to reinforced mounting frame (ordered separately).

Max. 4 m RHP 10-40
Max. 60° >L

RHP 10-70

RHP 10-70

RHP 80-90

L

Fig. 14. Lifting AHU fully assembled1
· Air handling units are heavy, therefore care must be taken during lifting, carrying or moving operations. Use personal protection equipment, do not stand under a suspended unit or a part thereof.
· Only an employee qualified to operate a forklift truck or crane and familiar with the principles of cargo lifting and safety requirements, must perform unloading or lifting operations.
· It must be ensured that the casing is not crushed or otherwise damaged by straps or ropes during lifting operations. Use of special supporting structures (traverses) is recommended.
· When lifting the unit or section thereof, note that their center of gravity may differ from the geometric center of the load.
· Mounting of separate air handling units in stacks is not allowed unless it’s construction design is intended for such installation.
· Before installation AHU must be stored in clean and dry premises in their original packaging. If the unit is installed but not yet in use, all connection openings must be tightly closed and the unit must be additionally protected against environmental influences (dust, rain, cold, etc.).

1 Lifting means (pipes, belts, ropes, traverses) are not included.

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3. MECHANICAL INSTALLATION
3.1. Requirements for Mounting Location and Installation Base
RHP PRO air handling units are designed for ventilation of medium or large commercial or industrial premises (e.g., stores, offices, hotels, etc.) where standard air temperature and humidity is maintained. These units are not intended for transporting solid particles within air flows. Standard equipment air handling units are intended for indoor installation; and with additional accessories, these units may be mounted outdoors. Air handling units are designed for ambient temperatures from -30°C to +40°C.

· RHP PRO units are not intended for operation in areas with potentially explosive atmospheres. Air handling units are not designed for ventilation and dehumidification of wet areas (pools, saunas, car washes, etc.).
· If the AHU is installed in a room with high humidity level, condensate may form on the walls of the unit at low outdoor temperatures.
An air handling unit must be mounted on a relatively large and sturdy base, based on the weight of the unit and in accordance with building regulations. Base must be made of reinforced concrete or metal structures. If the unit is not equipped with adjustable height feet, it must be installed on a flat base. Vibration dampening gaskets must be fitted between the unit and installation base. When the unit is not equipped with an installation frame or adjustable height feet, it should be fixed to the base with metal angle-pieces and rubber vibration dampening gaskets. When installed outdoors, air handling units must also be attached to the base. During installation, unit sections must be levelled in respect to the horizon: deviations shall not exceed 0.3 mm for 1 m in the longitudinal direction and 0.5 mm for 1 m in the transverse direction.

C

L

L

B

L2

L1 2,5

L2 2,5

L1

200

70

125

70

A

C

A B 50 Ø 65

70

70 70

70

70

60

125

37,5

42 – 92

Fig. 15. Installation frame with adjustable feet

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As large unit sections may be difficult to connect properly on site and the unit door may warp, it is necessary to adjust the hinges. Loosen the lock screw to raise/lower the door by a few millimetres.
Fig. 16. Adjusting the hinges

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3.2. Inspection Area
Based on its type, an air handling unit may be installed indoors or outdoors. When selecting an installation or mounting location, you must foresee sufficient and security compliant access space for repair and maintenance operations. The unit must be installed in a way to allow partial or full disassembly and removal of assemblies out of the sections, if needed (e.g., in case of complex repairs).

300

300
B A
B

Fig. 17. Device inspection area
Minimum service area A defines an area which must be free of any stand-alone or immovable devices, equipment, partitions, structure or furniture. This area is sufficient for performing service and filter replacement works. For repair and replacement of components (e.g., removal of rotary heat exchangers), access area equal to the width of the device B shall be ensured in front of the device.

Unit size 10 20 30 40 50 60 70 80 90

A, mm 670 800 800 800 940 940 940 940 940

B, mm 1000 1150 1300 1500 1700 1900 2100 2300 2610

Measurements in the table are approximate. For exact unit measurements see the technical data print-out.

When selecting an installation or mounting location, keep in mind that preventive maintenance works must be performed at least twice a year or more often, therefore, a safe and easy access to the unit must be foreseen.

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3.3. Connection of Sections
Connect connecting cables and wires of the sections (see Chapter “Electrical Installation”) before fastening sections of an air handling unit.
· If, for any reason, sections of the unit were disassembled, before installation at it’s final location, airtightness of the unit may differ from the data provided in documentation, unless the unit is assembled by personnel trained by the manufacturer.
· Sealing gaskets must be fitted between the sections (supplied with the unit). · For outdoor installation, joints between the sections must be additionally sealed with silicone or oth-
er sealant. · Drilling and using self-tapping screws on the unit casing is prohibited (where it is not provided by the
construction), since cables or tubes inside of the casing may be damaged.
5 8

6

8

2 3 1 1

3 4

7 7

Fig. 18. External connection and sealing of sections 1 ­ installation frame, 2 ­ nut M10, 3 ­ washer, 4 ­ screw M10, 5 ­ adhesive gasket, 6 ­ gasket on a shelf between different air flows,
7 ­ external tightening elements, 8 ­ internal tightening brackets

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Depending on the unit size and purpose of sections thereof, separate sections may be interconnected with external tightening elements or internal tightening brackets, using supplied screws. Sealing gaskets must be attached to joints before joining the sections (supplied with the unit). Gaskets are installed around the entire perimeter of the section as well as on a shelf which separates different air flows. Screws must be tightened so that the gasket is fully compressed and distance between the sections does not exceed 2­3 mm. If the unit is ordered with an installation frame, additionaly sections shall be tightened through the designated holes in the installation frame (insert internal section connection screws first, before tightening installation frame).
Sections are tightened at the inside corners as well as in the middle at the shelf separating different air flows. If some of the connection openings near the fans are hard to reach, air closing damper can be dismounted or external tightening elements can be used for easier section tightening.
On RHP 80 and bigger units check and if necessary, adjust the position of the rotary wheel in relation to the section housing before connecting all the sections (see Appendix No.1)

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3.4. Installation of External Heating/Cooling Devices
Based on their equipment, RHP PRO air handling units may be operated with various heating or cooling devices. Heaters/ coolers are usually installed in separate sections that are connected at the end of the unit (in the supply air stream). For air handling units with R1 or L1 inspection sides, heater/cooler sections are mounted on an installation frame and connected at the bottom part of the unit. For R2 and L2 inspection side units, heater/cooler sections are mounted at the top part of the unit and must be additionally fastened or suspended (fastening/suspending accessories not included). Heat exchanger sections are mounted to the AHU and sealed in the same way as other sections (see Chapter “Connection of Sections”).

Fig. 19. Examples for installation of heater/cooler sections

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Pipes of water heater and cooler are connected to a water mixing unit (PPU) that supplies hot/cold water from the building’s water system. Heat exchangers for direct evaporation (DX) coolers/heaters are factory-filled with nitrogen gas. Before connecting a heat exchanger to a refrigerant system, nitrogen gas is discharged through a valve which is then cut off and heat exchanger connections are soldered to a pipeline. Coils for water or DX coolers are fitted with condensate trays to which a siphon and drainage piping must be connected (see Chapter “Connection of a Condensate Drain”).
Electrical heater sections require a separate power supply.
All connections to the heating or cooling system piping and mains must be performed by a qualified specialist.

Fig. 20. Connection of sleeves
When connecting sleeves of water heaters/coolers, use two pipe wrenches to secure sleeves, otherwise they will be damaged. If water is used in the heater, for frost protection return water temperature sensor (B5) must be installed on the return water pipe as close to the heater as possible. It can be screwed1 into a special opening or fixed with a strap on the pipe. Fix the sensor in a way that its metal part has good contact with a surface of the pipe. The sensor must be thermally insulated so that the room temperature does not distort water temperature measurements.

Fig. 21. Installation of a surface-mounted return water temperature sensor2

1 Depending on the order. 2 Depending on the order.
24

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Fig. 22. Installation of a return water temperature sensor with thread1
When operating air handling unit in temperatures lower than 0°C, it is necessary to use water-glycol mixture as a heat carrier or to maintain a return water temperature of at least 25°C.
Pipework package2 must include circulation pump, which circulates heating/cooling medium through the coil (smaller circuit) and 3-way mixing valve with modulated actuator. In cases if 2-way valve is used, additionally it must be installed non-return valves to ensure continuous circulation around smaller circuit. PPU must be installed as close to the water coil as possible.

1 Depending on the order. 2 It is recommended to use PPU made by Komfovent.

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3.5. Connection of a Condensate Drain
During operation of the heat pump, air humidity condensates and accumulates in specially designed condensate trays. Condensate is removed from condensate trays via drainage pipes, therefore a condensate drainage system must be connected. Drainage piping must be at least 40 mm in diameter, mounted with a slope, without narrowing sections or loops preventing water from draining. If such drainage piping is installed outdoors or in unheated premises, it must be adequately insulated or equipped with a heating cable to prevent water from freezing during winter. Drainage piping is connected to the unit with a siphon. Due to positive or negative air pressure in the air handling unit, water cannot drain out of the condensate collection tray by itself. Therefore, it is necessary to connect a proper height siphon or a siphon with a one-way valve to the drain pipe.

Ø40 mm Ø40 mm

p < 0

H mm H/2 mm

p > 0

H mm

Fig. 23. Installation of a siphon without a one-way valve Height H of a siphon without a one-way valve is selected according to static pressure p inside the air handling unit:
H [mm] = 25 + p [mm H2O] = 25 + 0.1 x p [Pa]

Ø40 mm

Fig. 24. Example of a siphon with a one-way valve
Any drainage system cannot be directly connected to the common waste water system in order to protect supply air from contamination with bacteria and odours. Condensate from the air handling unit drainage system shall be collected into a separate container or should be lead to a sewage grille without any direct contact: do not connect drain directly to sewer pipe and do not immerse it into water. Condensate collection location must be easily accessible for cleaning and disinfection.

Fig. 25. Condensate drain connection to sewer system

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3.6. Connection to Air Ducts
· Ducts connecting the unit to the exterior of the building must be insulated (insulation thickness 50­ 100 mm) to prevent condensation on cold surfaces.
· Air intake and exhaust ducts must be fitted with air shut-off dampers (electric with actuators) to protect the unit from exposure to climatic conditions when the unit is switched off.
· In order to minimise AHU generated noise and noise transferring through the ducts into ventilated areas, sound suppressors (silencers) must be connected to the unit.
· Air duct system elements must have separate brackets and must be mounted in a way that their weight is not shifted to the unit casing.
Air ducts shall be connected to flexible unit connections, flanges or air dampers. Depending on the AHU size, L-20 or L-30 flanges shall be used. Special adhesive gasket must be attached to flanges for airtightness of air ducts. We recommend installing a solid gasket, i.e. do not cut it to smaller pieces. Make sure that the gasket does not cover fastening holes in the corners and is not damaged when fastening screws. Flanges in the corners are fastened with M8x20 screws and a C profile is pressed on edges to connect the flanges.

2 2

A A

1

3

–

2

2

1

3

2 3
Fig. 26. Example for fastening and sealing of a flange ductwork connection 1 ­ screw, 2 ­ C profile for connection of flanges, 3 ­ adhesive gasket

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For rectangular ducts where opening sides are longer than 500 mm, it is recommended to use universal clamp connectors instead of C profile to ensure better air tightness. Clamp connectors should be spaced evenly at intervals of no more than 265 mm.
265 mm

Fig. 27. Duct connection example using universal clamp connectors
Air closing damper profile dimensions are the same as those of L-20 flange (for all AHU sizes), thus when mounting additional parts (ducts, flexible connectors, duct heaters/coolers, silencers and etc.) directly to the air damper, they should also have an L-20 flange connection for easier installation.
3.7. Outdoor Units
RHP PRO air handling units for outdoor installation must be additionally protected against environmental effects by installing a protective roof and exhaust air hoods. Units shall be mounted on an installation frame which is attached to an installation base. Ventilation devices, when possible, should be installed near the walls for protection against wind loads. For outdoor installation, units with drainage pipes must be additionally protected against freezing, for example, with electric heating cables for drainage pipes. If the unit was ordered for outdoor installation, each section of the unit will be fitted with a protective roof. Separately ordered protective roof shall be installed once the unit is fully assembled.
Connections of units for outdoor installation must be additionally sealed (sealant not included).
If the outdoor unit will be switched off during the cold season, supply and extract air ducts (on the indoor side) must be fitted with additional air shut-off dampers. These should prevent warm indoor air from circulating inside the unit when it is stopped to avoid condensation, which may be detrimental to electronic components.

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3

4

6

1

Min. 10 x D 2

5

6

Ø D

4

5 4

Fig. 28. Accessories for outdoor installed units 1 ­ air handling unit, 2 ­ air intake hood, 3 ­ roof, 4 ­ boxes or covers for air damper actuators,
5 ­ air shut-off dampers, 6 ­ additional air dampers for protection of a stopped unit

Air intake and outlet hoods must be installed as far apart as possible (for example by installing additional duct segments between AHU and hood), to prevent the exhaust air from returning to the air intakes.
RHP PRO 10-80

b+80

c

d+80

a+80

a

b

c

d

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RHP PRO 90

a+100 b/2 b/2 c+100

a a+100

b>1110

c

b

c+100

a

b<1110

c

Fig. 29. Installation of a separately ordered protective roof1

1 Part count and measurements may differ depending on the unit type or project requirements.

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4. ELECTRICAL INSTALLATION
Only qualified professionals may perform electrical installation works in accordance with the manufacturer’s instructions and applicable legal acts and safety requirements. Before installation of any electrical components:
· Make sure the unit is unplugged from the mains. · If the unit has been standing in an unheated room for a long time, make sure there is no condensa-
tion inside and check if contacts and electronic parts of the connectors are not damaged by moisture. · Inspect the power cable ant other wiring for damage in insulation. · Locate the wiring diagram for your unit according to the unit type.
4.1. Requirements for Electrical Connection
· Connect the unit only to a proper power outlet with protective earthing. Earthing must be installed according to the EN61557, BS 7671 requirements.
· It is recommended to connect AHU to the mains via automatic circuit breaker with 300 mA current leakage protection (type B or B+).
· Control cables should be installed at least 20 cm away from power cables to reduce the possibility of electrical interference.
· All external electrical elements must be connected strictly according to the wiring diagram of the unit.
· Do not disconnect the connectors by pulling wires or cables.
Air handling units designed for 400 VAC, 50 Hz supply voltage1, connected through the main circuit breaker (QS1 in wiring diagrams). The main circuit breaker comes with a universal bracket that allows fixing it on the top or side of the AHU.

1 Depending on the order.

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1 2

7N 5L3 3L2 1L1
2T1

3
ON

OFF

6 7

4 5

Fig. 30. Main circuit breaker and its mounting examples 1 ­ universal bracket, 2 ­ circuit breaker, 3 ­ cover of the breaker, 4 ­ mounting on top of AHU vertically, 5 ­ mounting on top of AHU horizontally, 6 ­ mounting on the side of AHU vertically, 7 ­ mounting on the side of AHU horizontally

If circuit breaker bracket is used, it must be mounted on the edge of the unit casing, otherwise selftapping screws may damage wires or tubing that is routed inside.

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Units fitted with an additional electric heater section will be equipped with a separate main circuit breaker inside the section.

OFF OFF

ON
5

1

2

ON

3

4

Fig. 31. Main circuit breaker inside an electric heater section 1 ­ lead-in cable grommet, 2 ­ main circuit breaker handle, 3 ­ main circuit breaker,
4 ­ automatic switch, 5 ­ electronic heater control board
Large RHP PRO units (size 60 and larger) also has a separate power circuit breaker for the heat pump section. Lead-in cable diameter depends on a maximum current specified in the technical data print-out of the specific unit.

Current, A 15 21 27 34 50 70 85

Cable type 5 × 1,5 mm2 (Cu) 5 × 2,5 mm2 (Cu) 5 × 4,0 mm2 (Cu) 5 × 6,0 mm2 (Cu) 5 × 10,0 mm2 (Cu) 5 × 16,0 mm2 (Cu) 5 × 25,0 mm2 (Cu)

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4.2. Connection of Electrical Components
All internal and external devices are connected to the main board of the C5 control panel (RG1 in wiring diagrams) located in the automation box. Automation box is fitted at the top part of the heat exchanger section.

Fig. 32. Location of the automation box

1 2
25 26 27 28 29 30
1 2

4

1

2

25

26

27

28

29

3 30

4 31

5 32

6 33

7 34

8 35

9 10 36

11 12 37

38

39

13 40

14 41

15 42

16 43

17 44

18 45

19 46

20 47

21 48

22

23

24

3

Fig. 33. Main board of the C5 control panel 1 ­ control panel connection, 2 ­ Intranet or Internet connection, 3 ­ inner connections of components,
4 ­ terminals for external components

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Terminals for the external elements of the controller board are numbered and are used only to connect external components. These may remain empty if no additional features are required.

INPUTS

INPUTS B5

INPUT

DX

FG1

B6

B7

B8

B9

Humidity sensor
Air quality sensor
Exhaust air pressure sensor
Supply air pressure sensor
Air damper actuator
Operation Alarm
Common DX3 / Heating DX2 / Cooling DX1 / Start
Common
Water pump/ coil alarm

Indication

0..10V 25 1

B

~24V 26 2 A

N 27 3 GND

MODBUS RS485 interface

OUTPUT

0..10V 28 4 IN4

External control

External control

~24V 29 5 IN3

External stop

N 30 6 IN2

Fire alarm system

0..10V 31 7 IN1

OVR control

~24V 32 8 C

Common

NTC NTC

N 33 9 0..10V 34 10

Return water temperature sensor

B1 TG3

~24V 35 11 N 36 12

Supply air temperature sensor

37 13 0..10V ~24V 38 14 GND

Humidifier control

N 39 15 0..10V

Cold water

NO 40 16 ~24V

mixing valve /

NO 41 17 N DX capacity control

C 42 18 0..10V NO 43 19 ~24V NO 44 20 N

Heating damper actuator

S2 S1

NO 45 21 C 46 22

L

Water pump

N for cooling 230V AC, 1A

DIN 47 23 GND 48 24

L

Water pump

N for heating 230V AC, 1A

Fig. 34. Connection terminals for external components on the C5 main board

OUTPUTS TG2 TG1

OUTPUTS

Total power of all external devices with 24 V supply voltage shall not exceed 25 W.

Modbus RS485 (1-3) ­ data cable connection for controlling the unit from a building management system via Modbus
RTU protocol. External management (4­8) ­ terminals for controlling specific functions of the unit via external contacts which are
connected to a common terminal 8. These include thermostats, switches, motion sensors and other devices with normally open or closed contacts. Activated functions will operate as long as those contacts are connected. · Terminal 4 is used for activating recirculation (if a recirculation damper is ordered, controlled by an external contact) or
switching between heating and cooling modes when a combined water heater/cooler coil is fitted (when terminals are connected, the water valve actuator and pump will be controlled by a cooling signal. For example, a thermostat can be connected here to close terminals when cold water circulates in the system). · Closing contacts 5 and 8 will stop the unit. · Fire alarm requires a normally closed contact (NC), therefore, a jumper is connected between terminals 6 and 8, instead of which, building fire system can be connected. When the contact is disconnected, the unit stops, fans speed up (according to the order) and a fire alarm message is displayed. · Terminal 7 actives an “Override” ventilation mode (OVR). This mode has priority over other AHU functions and may be activated even when the unit is stopped (i.e. to start the unit by closing contacts). OVR function settings are set via the control panel or computer. This function is active as long as terminals are closed. B5 (9­10) ­ when a water heater is installed, this terminal is used for connecting a return water temperature sensor (NTC 10k) which protects against freezing.

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Fig. 35. Surface-mounted return water temperature sensor1

Fig. 36. Return water temperature sensor with thread2 B1 (11­12) ­ terminal for a supply air temperature sensor (NTC 10k) for controlling air temperature.

Fig. 37. Supply air temperature sensor
For the most accurate temperature measurement, sensor in a duct must be installed after all heating/cooling devices at least two duct diameters away from the nearest coil.

2D

D

1 Depending on the order. 2 Depending on the order.
36

Fig. 38. Installation of a supply air temperature sensor
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TG3 (13­14) ­ for connecting control signal (0..10 V) of an external humidifier or dehumidifier, if activated. TG2 (15­17) ­ power supply (24 V AC) and control signal (0..10 V) for a water cooler mixing valve actuator. If a DX unit is installed (controlled by a modulated signal), DX unit control signal is connected to these terminals and water cooling is disabled. TG1 (18­20) ­ power supply (24 V AC) and control signal (0..10 V) for a water heater mixing valve actuator. If a combined water heater/cooler is used, valve actuator will be controlled by a heating or cooling signal (whichever is supplied). S2 (21­22) ­ 230 V AC supply voltage for a cold water circulation pump, which is used with external water cooler coil and is activated when cooling is needed. Max 1 A. S1 (23­24) ­ 230 V AC supply voltage for a hot water circulation pump, which is used with external water heater coil and is activated when heating is needed. Max 1 A. B8/B9 (25­30) ­ terminals for air quality and humidity sensors, which are used for the following functions (see “User Manual”):

· Air quality control (AQC).

· Recirculation control (REC).

· Operation on demand (OOD).

· Humidity control (HUM).

These functions may be controlled via the following type sensors (sensor type may be changed only by an authorised service representative): · Carbon dioxide CO2 (default setting) ­ range 0..2000 ppm. · Air quality VOC (Volatile organic compound) ­ range 0..100 %. · Relative humidity RH ­ range 0..100 % RH. · Temperature TMP ­ range 0..50 °C.
B6/B7 (31­36) ­ when a VAV airflow control method is used (see “User Manual”), optional pressure sensors must be installed and connected in the ducts. Follow the manufacturer’s instructions for installation of VAV pressure sensors. Also, these terminals are used for DCV airflow control when a separate 0…10 V signal can be used to adjust the ventilation intensity (see “User Manual”).
FG1 (37­39) ­ terminals used to connect air damper actuators. Also terminals are dedicated for smoke by-pass damper actuator, when optional smoke extraction function is ordered and fans are forced during fire alarm. These terminals may also be used for connecting 24 V AC power supply actuators with or without a spring return.
Indication (40­42) ­ terminals are used when a normally open (NO) contact is necessary for operation status or fault indication.
Cooling control (43­46) ­ digital normally open (NO) outputs for controlling direct expansion (DX) coolers/heaters. The purpose of outputs differs depending on the type of DX device control ordered or programmed in the control panel1: · Stepping control of start/stop type DX cooling devices ­ each of the 3 outputs is activated one after the other, when the
power of the previous stage is insufficient, with 5 min. delay. · Stepping control of start/stop type reversible (cooling/heating) DX devices ­ DX1 and DX2 outputs are activated one
after the other, when the power of the previous stage is insufficient, with 5 min. delay. DX3 output is used for switching DX devices between cooling and heating modes. · If a DX device is controlled by a modulated signal (0..10 V), digital outputs are used for starting a DX unit and changing operation modes thereof: DX1 ­ start signal, DX2 ­ cooling, DX3 ­ heating. Power control signal for this type of the DX unit is connected to TG2 terminals. Water pump/coil alarm (47­48) ­ here you can connect signal for indication of water pump faults (if this function is available on the pump); if the pump fails, the air handling unit is stopped.

All wires to be connected to the main board of the control panel shall be pulled through grommets on top of the unit.

1 If the DX device was not predefined in the controller software, these outputs will be inactive.

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4.3. Control Panel Installation
The control panel must be installed in a room with: · Ambient temperature ­ 0..40 °C; · Relative humidity ­ 20..80 %; · Guaranteed protection against accidental water drops.
Control panel can be mounted in a concealed mounting box or directly on the wall (screws supplied with the panel). You can also use magnets (on the back surface) to attach the panel to metal surfaces (i.e. on the door of the unit).

Do not use any other type or size screws but those that are supplied for control panel mounting. Wrong screws may cause damage to a circuit board.

Control panel is supplied with a 10 m cable. If this cable is too short, you can replace it with a 4 × 0.22 mm cable, up to 150 m long.
+ RJ9

GND 4 LIN B 3 LIN A 2

+24V 1

4 x 0,22 mm 2

AB

< 150 m

Fig. 39. Control panel wiring diagram
Control panel cable shall be installed further away from other power supply cables or high voltage electrical equipment (electrical enclosure, electrical water heating boiler, air conditioning unit, etc.). The cable can be pulled through openings in the back or bottom part of the control panel (follow the installation instructions provided with the control panel). Cable to the C5 control board must be connected to a dedicated slot (RJ9 connector; see Fig. 33)

Yellow (A) Green (B)

( ) White (+) Red

Yellow (A)

( ) White (+) Red

Fig. 40. Control panel cable wiring

Do not use sharp tools for pinning contacts in the control panel (e.g., screwdriver). Please use a pencil or a ballpoint pen.

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X12
X2
X1

X12
X2
X1

4.4. Connection of Cables and Wires Between Sections
Before fastening parts of the air handling unit, you shall connect connecting cables and wires of the sections. Cable connectors are labelled with connector numbers; only connect connectors with the same number. Number of cables and connectors in different sections may differ depending on fitted components. If any features or external components are not ordered, there may be some uncoupled connections between the sections. Refer to the wiring diagram of the specific unit to see what connections should be used.
2 3
1
Fig. 41. Cable connections between sections 1 ­ power supply cable, 2 ­ communication cables between circuit boards 3 ­ labels with connection numbers Some components (e.g., damper actuators, humidifier, etc.) do not have separate connectors and must be connected to a terminal block of a junction box (PD in wiring diagrams).

Fig. 42. Junction box PD1
Connected wires and cables must be inspected to ensure that they will not accidentally disconnect due to vibrations of the unit or get in contact with moving parts of the unit (fans, valves, rotor wheel). If necessary, use special ties to attach the wires to the unit housing.

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4.5. Connecting the Unit to the Internal Computer Network or the Internet
Your AHU may be controlled not only with a control panel, but also with a computer or smart phone. For this reason the unit must be connected to the internal computer network or the Internet. In case of a computer, the unit is controlled via a web browser, and in case of a smart phone – via the Komfovent app. Use CAT5 type cable to connect your AHU to the computer network (RJ45 connection; see Fig. 33). The total cable length between the unit and the network router must not exceed 100 metres. By default, the IP address of your air handling unit is 192.168.0.50, however it can be changed (if necessary) according to the local network parameters. IP address can be found and changed in the control panel.
Connectivity
Controller ID Default IP 192.168.0.50 IP mask 255.255.0.0 Modbus ID 1 RS-485 19200
1 / 2

Fig. 43. Viewing and changing the IP address with a control panel
An air handling unit connected to a network router can be controlled by a computer via wireless connection (Wi-Fi). The unit may also be controlled wirelessly in a local network using a smart phone with the Komfovent app. Once the unit is connected to the network router, you should assign a free IP address on the local network.
When connecting your computer directly to the unit, open the network settings and manually assign an IP address, the last number of which would be different from the unit’s IP address (for example, if the unit’s IP address is 192.168.0.50, assign the address 192.168.0.70 to the computer). Enter the subnet mask: 255.255.0.0.

Internet Protocol Version 4 (TCP/IPv4) Properties
General
You can get IP settings assigned automatically if your network supports this capability. Otherwise, you need to ask your network administrator for the appropriate IP settings.

Obtain an IP address automatically Use the following IP address:

IP address:

192 . 168 . 0 . 70

Subnet mask:

255 . 255 . 0 . 0

Default gateway:

. . .

Obtain DNS server address automatically Use the following DNS server addresses:

Preferred DNS server:

. . .

Alternate DNS server:

. . .

Validate settings upon exit

Advanced…

OK

Cancel

Fig. 44. Computer network settings for direct connection to the unit

In order to control your AHU over the Internet, connect it to the network router which has access to the Internet. Follow the router manual to configure port forwarding to the unit IP address. Depending on whether you will use your computer or smart phone with the Komfovent app to control your AHU, you will also need to enter a corresponding port number to the router. For control via your computer use the port 80, and for control via your smart phone use the port 502. Once a computer or smart phone is connected to the Internet, enter an external router IP address and set port number to your web browser or the Komfovent app to access the AHU user interface (for more information on control with a computer or smart phone see “User Manual”).

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CPorinsinjuenctgioimnatosvthideinloiacmalecokmompuptiuertenreintwiaomrke tinkle
,,KKoommffoovveennt”t Cp5ro”garpapml CoPnrinseijcutniognimviaastihneteInrnteertnuet
IINNTTEERRNNEETTAS
,,,,KKomffoovveenntt” Cp5r”ogaprapml Fig. 45. Examples for the AHU connection to the Internet or the local network

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5. FILTERS
Air filters are intended for removing dust, bacteria and other fine particles from the supplied and extracted air. RHP PRO air handling units are fitted with bag filters, since they have a larger filtering surface than compact filters and will require less frequent filter replacement. Filters are made of synthetic fabric and can have different filtration classes1, i.e. intended for removing particles of different sizes. In general, supply air ducts are equipped with better filtering class filters than extracted air ducts, since the cleaned outdoor air is supplied to the premises. Make sure to replace filters on time, as contaminated filters increase pressure loss of the unit, reduce purification efficiency and increase power consumption.
The unit has an integrated filter contamination monitoring function. It continuously measures pressure difference upstream and downstream the filter to evaluate level of contamination. In case filters from another manufacturer or filters of other filtration class are used instead of factory-fitted filters, calibration of clean filters shall be performed before using the air handling unit. Filter replacement intervals depend on the environment pollution conditions as well as time of year, for example, during spring and summer filters may be contaminated with pollen, pubescence or insects, therefore change intervals are shorter. Replace filters if they are visibly dirty even though it is not time yet and a filter change message is not displayed yet.
Filter type, dimensions, filtering class, number and exact location is specified in the technical data print-out for the specific unit.

Fig. 46. Filter clamping device
To insert/remove filters, pull two handles at the top and bottom of the filter to release a filter clamping device. Filters are removed/inserted one by one (number of filters depends on the unit size). Once the filters are replaced/inserted, handles are pushed and the filter clamping device presses the filters to the gaskets.
When inserting filters, make sure that their pockets are upright, filter frames are tightly seated and gaskets are intact.

1 Depending on the order. 42

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6. COMMISSIONING AND INSPECTION OF THE UNIT
Before switching on the device, check for foreign objects, debris or tools inside the unit. Make sure that air filters are installed and condensate drainage is connected, fill the siphon with water. Make sure that the ductwork is free from obstructions such as fully closed diffusers or adjustment valves or blocked external air intake grilles. Inspect the heat pump assembly. Check for presence of moisture in the refrigerant system. A sight glass with moisture indicator is provided for this purpose. The indicator is completely green when there is no moisture in the system and changes colour (to yellow or red) when moisture is detected. Check the approximate level of the refrigerant ­ liquid level should be at least up to ¾ of the sight glass.
· You may start your AHU only when it is fully installed, ducts and external electrical elements are connected. Do not start the unit without air ducts connected. This may distort air volume measurements required for stable operation of the fans.
· Do not use the unit with a temporary electrical power supply as unstable power can damage the electronic components.
See the KOMFOVENT website for user manuals.
The unit is controlled via a control panel or a computer. The unit is supplied with the following operation modes that may be used immediately after installation or different ventilation settings may be selected. · COMFORT 1 ­ maximum ventilation intensity (100%), desired air temperature ­ 21°C. · COMFORT 2 ­ average ventilation intensity (50%), desired air temperature ­ 21°C. · ECONOMY 1 ­ low ventilation intensity (33%), desired air temperature ­ 20°C. · ECONOMY 2 ­ minimum ventilation intensity (20%), desired air temperature ­ 19°C. · SPECIAL ­ maximum ventilation intensity (100%), desired air temperature ­ 21°C.
This mode may also be used to disable heating/cooling and other functions.
6.1. Control panel C5.11
C5.1 is control panel with coloured touch-screen for remote control of your air handling unit. This control panel is designed for indication and changing of various functions and settings of the unit.

16:30
21,9 °C 21,3 °C
Temperature ECONOMY 1

Fig. 47. Control panel

1 Sold separately.

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If the unit is connected to the mains, the control panel will display a home screen or a screen saver that you can switch off with a single tap.
To start an air handling unit or change a ventilation mode:
Change operation
mode?
During the first minute of starting the unit, the unit automation checks the settings, automation components and opens air dampers. Later, a signal is sent to fans and a heat exchanger, and the unit starts operating at a selected ventilation mode.
The first time you turn on your air handling unit, you will have to perform calibration of a HP evaporator1 (if not performed during installation). This calibration is necessary for proper operation of the antifreeze prevention function.
During calibration, the unit will run for 10 minutes by changing fan speed and will be measuring pressure inside the unit, therefore, do not open the unit door, do not adjust the duct system or change parameters at that time. To stop calibration, turn off the unit with a control panel or in the Overview screen.
16:30
Start 2H1P ,e9xc°hCanger ca2li1b,r3ati°oCn?
Temperature STARTING
To change the ventilation mode settings: select a desired mode and set a desired air volume or temperature with the arrows.

1 Only for AHU with electronic TRV controller board. 44

UAB KOMFOVENT we reserve the right to make changes without prior notice RHP PRO_23-05

To turn of the AHU and return to a home screen:
6.2. Starting the Unit With a Computer
If the unit was ordered without a control panel or it is not used, you can start it with your computer. In this case the unit is controlled via a web browser. Connect your computer directly to the AHU or to the same computer network as described in Chapter 4.5. Run the Internet browser on the computer and disable the use of all Proxy servers that may block the connection in the settings. In the web browser address bar, enter the IP address of the unit:
C5 Komfovent
192.168.0.50 Login to the C5 control panel interface in a window that opens: enter the user name user, password user1 and press CONNECT.

1 If the password was changed, use the changed password.

UAB KOMFOVENT we reserve the right to make changes without prior notice

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45

EN
If you login attempt is successful, “Overview” window is opened.

Overview Modes Functions Alarms/Status Scheduling Settings

30 %

8.0 °C

10 Pa 26.2 °C

10 Pa

10.0 °C

30 %

48% 26 °C 100%

AHU control Operation mode Active functions Alarm status

On/Off Economy1
No alarms

1200ppm 600ppm
2000 m³/h 2000 m³/h
27.9 °C
2000 m³/h 2000 m³/h

UAB KOMFOVENT we reserve the right to make changes without prior notice

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RHP PRO_23-05

To start the unit and change the ventilation mode settings: 1. Press button “Modes”. 2. Select a desired ventilation mode from the list. 3. Enter desired air flow and temperature in the selected mode settings. 4. Press “Save” button at the bottom of the screen.

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EN
To start or stop the device, press the on / off button in the “Overview” window.
6.3. Calibration of Clean Filters
RHP PRO control automation continuously monitors filter contamination. Pressure drop of clean filters is preset in the factory. If filters are from another manufacturer or of different filtering class, we recommend performing initial calibration of clean filters before commissioning of the unit. During calibration, the unit will operate at a maximum speed for a few minutes, measure the pressure difference upstream and downstream the filter and automatically set the filter filtration class.
Calibration of clean filters with the control panel:
Start calibration?
Calibration of filters with a computer: Select Point “Warnings/States”:

If filters ordered with the unit are used (same manufacturer and filtration class), calibration of clean filters is not required.

UAB KOMFOVENT we reserve the right to make changes without prior notice

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RHP PRO_23-05

6.4. Quick Inspection
The first time you start your device, make sure that:

Task
Control panel is working, responds to touch, no error messages

Yes No

All air filters are installed

Comments

Air dampers fully open
There are no unusual noise or vibrations
Changing the ventilation modes changes the fan speed
The unit is airtight without gaps or air leakage
Heating/cooling devices are working
Connected external devices are working
The condensate easily flows from the unit and the drainage piping is watertight
Check for leaks in the heat pump piping system
Check if there is no moisture in the refrigerant system
The heat pump compressor operates properly, without any extraneous noise and vibrations. HP heat exchanger calibration performed (only in HP units)
Other comments:

Installer Company Tel. No. Date Signature

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ANNEX NO. 1. ADJUSTMENT OF THE ROTARY HEAT EXCHANGER WHEEL
In the RHP 80 and larger units, a large-diameter rotary heat exchanger is used. Since, during the operation, the airflow constantly pushes the rotor wheel, due to its dimensions, to one side, it can eventually distort, causing the rotor sealing brushes and axle bearings to wear out faster or even may jam after time. To prevent this, check and, if necessary, adjust the position of the rotary wheel in relation to the section housing before connecting all the sections of the AHU. This is especially important if the mounting base is not completely level and the sections of the unit cannot be perfectly leveled using adjustable feet (see section “Requirements for the mounting location, installation base”). It is also recommended to check the position of the rotary wheel periodically, at least once a year.
1
A.
C.
B.

On the rotary heat exchanger housing, you will find a sticker A indicating the direction of the airflows in the unit. It is used to determine the tilting direction of the rotary wheel (see step 5). Wheel tilt regulation point C can be accessed from the side or from an adjacent section (if the unit sections are connected together). In the rotor section, you will also find additional adjustment plates B, that can be used, if the factory-installed adjustment plates are not sufficient to achieve the correct tilt angle.

2

3

Loosen the fixing screw. Unscrew it from the shaft about 5 mm.

Screw in the adjusting screw. This will cause the wheel axis to tilt and release the adjustment plates.

UAB KOMFOVENT we reserve the right to make changes without prior notice

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RHP PRO_23-05

4

5

1/2 L L

L 1/2 L

AIR FLOW DIRECTION

AIR FLOW DIRECTION

L 1/2 L

1/2 L L

Remove or add the adjustment plates (depending on which side Tilt the heat exchanger axis so that the rotary wheel is slightly in-

the wheel should be tilted).

clined against the direction of airflow. If the wheel cannot be ad-

justed correctly using the adjustment point on one side only, fol-

low steps 2-4 on the other side of the rotor.

6

7

After adjusting the wheel tilt, loosen the adjusting screw so that Tighten the fixing screw. the rotor shaft presses firmly against the adjusting plates.

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51

SERVICE AND SUPPORT
LITHUANIA UAB KOMFOVENT Phone: +370 5 200 8000 service@komfovent.com www.komfovent.com
SWEDEN Komfovent AB Ögärdesvägen 12A 433 30 Partille, Sverige Phone: +46 31 487 752 info_se@komfovent.com www.komfovent.se
FINLAND Komfovent Oy Muuntotie 1 C1 FI-01 510 Vantaa, Finland Phone: +358 20 730 6190 toimisto@komfovent.com www.komfovent.com
GERMANY Komfovent GmbH Konrad-Zuse-Str. 2a, 42551 Velbert, Deutschland Phone: +49 0 2051 6051180 info@komfovent.de www.komfovent.de
LATVIA SIA Komfovent Bukaisu iela 1, LV-1004 Riga, Latvia Phone: +371 24 66 4433 info.lv@komfovent.com www.komfovent.com
Vidzemes filile Alejas iela 12A, LV-4219 Valmiermuiza, Valmieras pagasts, Burtnieku novads Phone: +371 29 358 145 kristaps.zaicevs@komfovent.com www.komfovent.com
UNITED KINGDOM Komfovent Ltd Unit C1 The Waterfront Newburn Riverside Newcastle upon Tyne NE15 8NZ, UK Phone: +447983 299 165 steve.mulholland@komfovent.com www.komfovent.com

PARTNERS

AT J. PICHLER Gesellschaft m. b. H. www.pichlerluft.at

BE Ventilair group ACB Airconditioning

www.ventilairgroup.com www.acbairco.be

CZ REKUVENT s.r.o.

www.rekuvent.cz

CH WESCO AG SUDCLIMATAIR SA CLIMAIR GmbH

www.wesco.ch www.sudclimatair.ch www.climair.ch

DK Øland A/S

www.oeland.dk

EE BVT Partners

www.bvtpartners.ee

FR ATIB

www.atib.fr

HR Microclima

www.microclima.hr

HU AIRVENT Légtechnikai Zrt. Gevent Magyarország Kft. Merkapt

www.airvent.hu www.gevent.hu www.merkapt.hu

IR

Fantech Ventilation Ltd

www.fantech.ie

IS

Blikk & Tækniþjónustan ehf

Hitataekni ehf

www.bogt.is www.hitataekni.is

IT

Icaria srl

www.icariavmc.it

NL Ventilair group DECIPOL-Vortvent CLIMA DIRECT BV

www.ventilairgroup.com www.vortvent.nl www.climadirect.com

NO Ventilution AS Ventistål AS Thermo Control AS

www.ventilution.no www.ventistal.no www.thermocontrol.no

PL Ventia Sp. z o.o.

www.ventia.pl

SE Nordisk Ventilator AB

www.nordiskventilator.se

SI

Agregat d.o.o

www.agregat.si

SK TZB produkt, s.r.o.

www.tzbprodukt.sk

UA TD VECON LLC

www.vecon.ua

www.komfovent.com

2023-05

References

• Domov - Agregat
• Airvent Légtechnikai Zrt.
• Solutions de ventilation et de traitement d’air | ATIB
• Blikk - og tækniþjónustan ehf. - Heim
• BVT | BVT
• Clima Direct: making it comfortable
• CLIMAIR
• Elta Ireland | Air Movement & Air Quality
• GEVENT Magyarország
• Hitatækni | Sérþekking á sviði loftræsinga
• ICARIA VMC
• Home | Komfovent
• Startseite | Komfovent
• Hemsida | Komfovent
• Merkapt Zrt. – Épületgépészeti kereskedések
• Sistemi za klimatizaciju, grijanje, rashladna tehnika i regulacija | Microclima d.o.o.
• Nordisk Ventilator AB |
• Velkommen hos Øland A/S
• Home Pichler - Pichlerluft - Wohnraumlüftung, Luftförderung, Luftführung, Luftverteilung
• Rekuvent | Rekuperace, vzduchotechnika, řízené větrání
• SUDCLIMATAIR - Votre Air, Notre Expertise
• Totalleverandør av kjølemaskiner og varmepumper > Thermo Control
• TZB produkt
• Vecon
• VENTIA | Strona główna
• Ventilution AS
• Hjem - Ventistål
• Vind hier luchtbehandeling voor uw bedrijf - Vortvent
• Ihr Spezialist für Lüftung & Luftfiltration - WESCO

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