HIdRos FHE Series Technical Manual

Dehumidifiers for radiant cooling systems with heat recovery

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DEHUMIDIFIERS FOR RADIANT COOLING SYSTEMS WITH HEAT RECOVERY

Incorporated in this document are the following:

• Declaration of conformity

• Technical manual

• Dimensional drawing

Multiple instructions:

MTEC.4660.GB-G-1 Operation and maintenance manual FHE serie English Rev. G 11-2023

FHE

SERIE

TECHNICAL MANUAL

Read and understand

the instructions before

undertaking any work on

the unit

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Summary of Contents for HIdRos FHE Series

Page 1 DEHUMIDIFIERS FOR RADIANT COOLING SYSTEMS WITH HEAT RECOVERY SERIE TECHNICAL MANUAL Incorporated in this document are the following: • Declaration of conformity • Technical manual • Dimensional drawing Read and understand Multiple instructions: the instructions before undertaking any work on the unit MTEC.4660.GB-G-1 Operation and maintenance manual FHE serie English Rev.
Page 2 Reproduction, data storage and transmission, even partial, of this publication, in any form, without the prior written authorisation of the Com- pany, is prohibited. The Company can be contacted for all inquiries regarding the use of its products. and instructions regarding use and maintenance at any time, without notice. Declaration of conformity We declare under our own responsibility that the below equipment complies in all parts with the CEE and EN directives.
Page 3 INDEX 1. INTRODUCTION ....................................5 1.1 Preliminary information ..............................5 1.2 Aim and content of the manual ............................5 1.3 How to store this manual ..............................5 1.4 Manual updates ................................5 1.5 How to use this manual ..............................5 1.6 Potential risks ..................................
Page 4 5.2 Description of the control panel ............................. 34 5.3 Remote control panel ..............................36 6. USE ........................................38 6.1 Switch the unit on ................................38 6.2 Stop ....................................38 6.3 Stand-by ..................................38 6.4 How to change the set points ............................39 6.5 Acoustic signal silencing ..............................
Page 5 1. INTRODUCTION 1.1 Preliminary information Reproduction, storage or transmission of any part of this publication in any form, without the prior written consent of the Company, is pro- hibited. The unit to which these instructions refer, is designed to be used for the the purposes described and to be operated in accordance with these instructions.
Page 6 1.6 Potential Risks Whilst the unit has been designed to minimize any risk posed to the safety of people who will interact with it, it has not been technically possible to eliminate completely the causes of risk. It is therefore necessary to refer to the requirements and symbolism below: LOCATION OF POTENTIAL RISK METHOD OF INJURY...
Page 7 1.7 General Description of Symbols Used Safety symbols combined in accordance with ISO 3864-2: BANNED A black symbol inside a red circle with a red diagonal indicates an action that should not be performed. WARNING A black graphic symbol added to a yellow triangle with black edges indicates danger. ACTION REQUIRED A white symbol inserted in a blue circle indicates an action that must be done to avoid a risk.
Page 8 1.8 Safety symbols used GENERAL RISK Observe all signs placed next to the pictogram. The failure to follow directions may create a risk situation that may be injurious to the user. ELECTRICAL HAZARD Observe all signs placed next to the pictogram. The symbol indicates components of the unit and actions described in this manual that could create an electrical hazard.
Page 9 For all electrical information not provided on the label, refer to the wiring diagram. A facsimile of the label is shown below: Manufacturer: PD322111 Via E. Mattei, 20 35028 Piove di Sacco PD - Italy +39 049 9731022 info@hidros.it www.hidros.eu 1FHE.026K-2A 123456 Modello Matricola...
Page 10 2. SAFETY 2.1 Warning re potentially hazardous toxic substances • The lubricant used is polyester oil. Please refer to the information provided on the compressor data plate. For further information regarding the characteristics of the refrigerant and oil used, refer to the safety data sheets available from the refrigerant and oil manufacturers.
Page 11 2.3 Prevent inhalation of high vapor concentration Atmospheric concentrations of refrigerant must be minimized and kept to a level that is below the occupational exposure limit. Vapor is heavier than air and can form dangerous concentrations near the ground where the ventilation rate is lower. Always ensure adequate venti- between liquid refrigerant and the eyes or skin.
Page 12 2.6.3 Contact with eyes Rinse immediately using an eyewash or clean water, keeping eyelids open, for at least ten minutes. Seek medical assistance. 2.6.4 Ingestion Do not induce vomiting. If the injured person is conscious, rinse his/her mouth with water and make him/her drink 200-300ml of water. Seek immediate medical assistance.
Page 13 tial disposal, class G4, according to EN 779:2002. 3.1.10 Microprocessor All FHE units are supplied with an advanced software for the complete control of the hydronic and air distribution side. The software can manage: - The management of the operation according to a probe of temperature and humidity. - Activation of of winter or summer sensible load integration, according to the summer or winter set point - Management of supply air temperature trough discharge limit probe sensor (standard).
Page 14 3.2 Accessories description 3.2.1 Serial interface card RS485 (INSE) This interface card enables the controller to comunicate with other devices using Modbus protocol. 3.2.2 Remote control panel (PCRL) This panel can be mounted up to 50m (maximum) from the unit and replicates all of the control functions. It is connected using a twin cable of 2.5 mm section.
Page 15 3.3 Main components Air Filter Supply Fan with EC motor Control panel with display Exhaust Fan with EC motor Heat Recovery Direct Expansion + Plate Exchanger Water Coil Air Filter Compressor Motorized regulaton damper Fresh Air Supply Air 3.4 Aeraulic circuit functioning principles Return Air W.C.
Page 16 3.5 Refrigeran circuit layout takes the air humid from the ambient trough the fan (7) and it’s made coil (2) where it’s cooled and brought to a condition closed to satura- tion. Now it passes through the evaporating coil (3) where it’s fatherly The air passes now through the condensing coil (5) where it’s post heated (with a constant humidity) and in the post-cooling coil (6) where it’s reported to the required conditions.
Page 17 3.6 Operation mode Fresh Air Supply Air 3.6.1 Summer operation (COMPRESSOR ON) Exhaust Air Return Air W.C. Whit this selected mode the unit renews the ambient air with the out- so as to allow operation of refrigerant circuit; for this purpose the r recycling dumper will be open, the supply fan is operated at maximum capacity and the unit works with external air and partial recirculation.
Page 18 Dehumidifiers for radiant cooling systems with heat recovery 3.7 Technical Data l/24h 30,5 Useful dehumidification capacity (from the net hygroscopic content of the external air) Total cooling Power (latent + sensible) 1380 Recovered winter heating power Efficiency winter recovery Efficiency summer recovery Power supply V/Ph/Hz 230/1/50...
Page 19 3.8 Hydraulic circuit pressure drops The graphics below show the pressure drops of the hydraulic circuit of the FHE unit; They include the water coil, the plate heat exchanger and the 3 way modulating valve. 80,0 70,0 60,0 50,0 40,0 30,0 20,0 10,0...
Page 20 3.10 Fans Supply fan Input power 260 m Exhaust fan Input power 80 m 100 m 130 m MTEC.4660.IT-G-1 Operation and maintenance manual FHE serie English Rev. G 11-2023...
Page 21 3.11 Operation limits Winter operation Ambient temperature (°C) Summer operation Ambient temperature (°C) The units MUST be used within the operation limit indicated in the diagrams. The warranty will be invalidated if the units are used in ambient conditions outside the limits reported. If there is the necessity to operate in different condi- The units are designed and manufactured to work with ambient temperatures from 10°C to 50°C The units are designed to operate within false ceiling and/or heated technical room.
Page 22 3.12 Sound Data will be low, while it will be higher ( and therefore with greater noise level) in case of highest static pressure requirement. The table below shows the trend of sound levels according to some operating points (model / static pressure) of the unit: Sound Data Octave band (Hz) Lw (A)
Page 23 3.14 Electric data Electric data Power supply 230/1/50 Control circuit 24/1/ 50 Auxiliary circuit 230/1/50 Fans power supply 230/1/50 4. INSTALLATION 4.1 General safety guidelines and and use of symbols Before undertaking any task the operator must be fully trained in the operation of the machines to be used and their controls.
Page 24 4.3 Personal protective equipment When operating and maintaining the unit, use the following personal protective equipment listed below, required by law. Protective footwear. Eye protection. Protective gloves. Respiratory protection. Hearing protection. 4.4 Inspection of the labels on the unit, and to take any possible precautions of the case. Not observing the rules reported on this manual can create dangerous situations.
Page 25 4.6 Unpacking Packaging could be dangerous for the operators. It is advisable to leave packaged units during handling and remove it before the installation. The packaging must be removed carefully to prevent any possible damage to the machine. The materials constituting the packaging may be different in nature (wood, cardboard, nylon, etc.). The packaging materials should be seperated and sent for disposal or possible recycling to specialist waste companies.
Page 26 4.9 Condensate draining connections Condensate draining should be done with a rubber pipe passing through the condensate draining connection located on the suction side of the unit. The discharge hole is 20mm diameter. Air intake Condensate Draining Water inlet Power supply and electrical connections Water outlet (cable 2x1,5 mt)
Page 27 The inlet maximum water temperature allowed is 50°C. The inlet maximum water temperature allowed is 10°C. È fortemente consigliato collegare l’unità a monte del collettore dell’impianto in modo da assicurare la corretta alimentazione idrica. 4.11 How to vent the unit For a correct operation of the system it is mandatory to remove the air from the hydraulic circuit.
Page 28 4.12 Ductwork unit connection The FHE units must be connected to the air ducts in order to supply the treated clean air in the bedrooms and the living room and return air from the polluted rooms (kitchen, bathrooms). The air transfer through the different rooms generally occurs through the gaps under doors, and are not, as a rule , requested return air grilles.
Page 29 slightly lower than the point 2 and very low at point 3. The same can be said of the points 4, 5 and 6. To balance the pressure drops of the ductworks we will act on the calibration grids placed in the various supply and return grills (Component 4.13.1 Supply and exhaust fan adjusting trimmers of 50 Pa.
Page 30 4.14 Serial interface card RS485 (INSE) Supervision system interface serial board (MODBUS RS485 available only)The installation of the card will allow the unit to be plugged in and connected to a system with MODBUS protocol. This system allows you to remotely monitor all parameters of the unit and change their wiring as shown in the diagram.
Page 31 The electric panel is located inside the unit at the top of the technical compartment where the various components of the refrigerant circuit are also to be found. To access the electrical board, remove the front panel of the unit: Power connections must be made in accordance to the wiring diagram enclosed with the unit and in accordance to the norms in force.
Page 32 4.17 Electrical data The electrical data reported below refer to the standard unit without accessories. In all other cases refer to the data reported in the attached electrical wiring diagrams. please contact our Company. Model Power supply V/~/Hz 230/1/50 Control board V/~/Hz 24 V Auxiliary circuit...
Page 33 HOT WATER PUMP To be connected to terminals 26 and N1; with maximum absorption of current of 1A. In the case microprocessor turns off the water pump when the set point is reached. This solution allows an important reduction of electric power consumption when the set point is reached or when the unit is in standby.
Page 34 5.2 Description of the control panel UP Key (menu navigation, scroll through the parameters, scroll values of the Summer mode key parameters..) DOWN Key (menu navigation, scroll through the parameters, scroll values of the Winter mode key parameters..) SET key (set-point view, access to menu, con- MENU’...
Page 35 5.2.2 Keys function FUNCTION makes it possible to enter the functions menu. makes it possible to display the set points; Summer humidity set, in the bottom line will appear the label SETU. Winter humidity set, in the bottom line will appear the label SETI. Summer temperature set, in the bottom line will appear the label SETC.
Page 36 5.3 Remote control panel 5.3.1 Installation To obtain IP65 protection for the panel, use the rubber gasket RGW-V (optional). For wall mounting use the V-KIT plastic adapter as illu- strated in the picture. Electric data can be updated without notice. It is therefore necessary to always refer to the wiring diagram provided in the unit.
Page 37 5.3.2 Display icons ICON FUNCTION Icon ON when the display show a value of temperature or pression. (°C = Celsius degrees; °F = Fahrenheit degrees; BAR = pression in Bar; PSI = pression in Psi) Time frame between defrosts. Icon blinking on alarm. Function menu active.
Page 38 6. USE 6.1 Switch the unit on In order to power the unit, turn the main switch to the ON position. The display shows the ambient temperature (top) and ambient humidity (bottom). 6.1.1 Summer mode Press the key for 5 seconds, the unit turn on in summer mode; the icon blinking, after few seconds the (fan) and (pump) icons will be activated.
Page 39 6.4 How to change the set points When modifying or varying the machine’s operating parameters, make sure that you do not create situations that The complete display of the 3 set points (heating, domestic hot water, cooling) is ONLY available when the unit is in stand-by mode.
Page 40 6.5 Acoustic signal silencing Pressing and releasing one of the keys; the buzzer is switched off, even if the alarm condition remains in place. Displaying during an alarm alarm code in the bottom line: • HP + + alarm code in the bottom line*: high pressure alarm •...
Page 41 7.2 Drive access Access to the unit once installed, should only be possible to authorized operators and technicians. The owner of the equipment is the com- pany legal representative, entity or person owns the property where the machine is installed. They are fully responsible for all safety rules given in this manual and regulations.
Page 42 Site assembled refrigerant circuits must be assembled and maintained carefully, in order to prevent malfunctions. Therefore: • • In the event of a gas leakage on machines using refrigerant R134A, R410A even if it is only a partial leak, do not top up. The entire charge •...
Page 43 DIAGNOSIS AND TROUBLESHOOTING All units are checked and tested at the factory before shipment, however, during operation an anomaly or failure can occur. BE SURE TO RESET AN ALARM ONLY AFTER YOU HAVE REMOVED THE CAUSE OF THE FAULT; REPEA- TED RESET MAY RESULT IN IRREVOCABLE DAMAGE TO THE UNIT.
Page 44 10.DIMENSIONAL DRAWINGS FHE 26 MTEC.4660.IT-G-1 Operation and maintenance manual FHE serie English Rev. G 11-2023...
Page 45 MTEC.4660.IT-G-1 Operation and maintenance manual FHE serie English Rev. G 11-2023...
Page 46 MTEC.4660.IT-G-1 Operation and maintenance manual FHE serie English Rev. G 11-2023...
Page 47 MTEC.4660.IT-G-1 Operation and maintenance manual FHE serie English Rev. G 11-2023...
Page 48 HIDROS Srl Technical data shown in this booklet are not binding. The reference languages for the whole documentation are Italian and English. The other languages are to be considered only as guidelines.

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