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Incorporated in this document are the following:
• Declaration of conformity
• Technical manual
• Dimensional drawing
Multiple instructions:
Consult the specific part
MTEC.4690.GB-C-1 Operation and maintenance manual FH serie English Rev. C 11-2023
DEHUMIDIFIERS FOR RADIANT COOLING SYSTEM
TECHNICAL MANUAL
FH
SERIE
Read and understand
the instructions before
undertaking any work on
the unit
Original Instructions
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Summary of Contents for HIdRos FH Series
- Page 1 DEHUMIDIFIERS FOR RADIANT COOLING SYSTEM 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 Consult the specific part undertaking any work on the unit MTEC.4690.GB-C-1 Operation and maintenance manual FH serie English Rev.
- Page 2 Reproduction, data storage and transmission, even partial, of this publication, in any form, without the prior written authorisation of HIDROS S.p.A., is prohibited. HIDROS S.p.A. can be contacted for all inquiries regarding the use of its products. HIDROS S.p.A. follows a policy of continuous product development and improvement and reserves the right to modify specifications, equip- ment and instructions regarding use and maintenance at any time, without notice.
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Page 3: Table Of Contents
4.18 Supply and return grilles installation ..........................4.19 Electric connections: preliminary safety information ......................4.20 Electrical data .................................. 4.21 Electrical connections ..............................5. UNIT START UP ...................................... 5.1 Preliminary checks ................................5.2 Control panel ..................................MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... - Page 4 8.1 Disconnect the unit ................................8.2 Disposal, recovery and recycling ............................8.3 RAEE Directive (only UE) ..............................9. DIAGNOSIS AND TROUBLESHOOTING .............................. 9.1 Fault finding ..................................10.DIMENSIONAL DRAWINGS .................................. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023...
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Page 5: Introduction
In these instructions symbols have been used (described in the following paragraphs) to draw the attention of operators and users to the operations that have a higher risk and which must be performed safely. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 6: Potential Risks
(special anchors or sei- smic vibrations to prevent breakages or accidental falls ). MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 7: General Description Of Symbols Used
A white symbol inserted in a blue circle indicates an action that must be done to avoid a risk. Safety symbols combined in accordance with ISO 3864-2: The graphic symbol “warning” is qualified with additional safety information (text or other symbols). MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 8: Safety Symbols Used
The unit is not suitable for operations in environments: • excessively dusty or potentially explosive atmospheres; • where there are vibrations; • where there are electromagnetic fields; • where there are aggressive atmospheres MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 9: Unit Identification
Contiene gas fluorurati ad effetto serra disciplinati dal protocollo di Kyoto Contains fluorinated greenhouse gasses covered by the Kyoto protocol The product label should never be removed from the unit. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 10: Safety
Avoid contact with open flames and hot surfaces as this can cause toxic and irritating decomposition products to form. Avoid contact between liquid refrigerant and the eyes or skin. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 11: Procedures In The Event Of Accidental Release Of Refrigerant
2.6.5 Further medical treatment Treat symptoms and carry out support therapy as indicated. Do not administer adrenaline or similar sympathomimetic drugs following exposure, due to the risk of cardiac arrhythmia. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 12: Tecnichal Characteristics
The electric switch board is made according to electromagnetic compatibility norms CEE 73/23 and 89/336. The accessibility to the board MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 13: Versions
In white lacquered wood, prepared for the inlet and outlet air temperature. The grille is installed on the dehumidifier deck using special fixing bolts supplied along with grille. The grille is provided with dedicated neck. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 14: Unit Components
Obviously, if the unit works without the help of the cold water, the air in outlet will be hotter than the air in inlet. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... - Page 15 WZ versions can work with air dehumidification mode with cold air only if feed by the water plant (normally around 15 ÷ 18°C). In the absence of cold water, the units must be switched manually in winter mode, to operate in dehumidification + heating. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023...
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Page 16: Technical Data
(3) Sound pressure level measured at 1 mt from the unit in free field conditions direction factor Q=2 according to ISO 9614, minimum fan speed. (4) Room Temperature 35°C relative humidity 80%. 3.7 Hydraulic circuit pressure drops FHWZ Water Flow (l/h) MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 17: Operation Limits
Lw: Sound power level according to UNI EN ISO 3746:1997. Lp: Sound pressure level measured at 1 mt from the unit in free field conditions direction factor Q=2 according to ISO 9614, minimum fan speed. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 18: Safety Devices
The installation and maintenance of the unit must comply with the local regulations in force at the time of the installa- tion. Avoid contact and do not insert any objects into moving parts. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 19: Health And Safety Considerations
• Inform the Company of the extent of the damage within 8 days of receipt of the goods. After this time any claim will not be considered. • A full written report is required for cases of severe damage. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 20: Storage
fixed to. It’s advisable to cover the inside of the false ceiling with high density bitume layer and to foresee one or more openings to have the possibility to clean the air filters, to control the refrigerant circuit and to check the electrical board. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... - Page 21 The casing front profile must be flush with the finished plaster wall. Once the casing is fixed to the wall, the machine can be finally fitted. The unit is fixed to the casing using the de- dicated screws supplied. 80mm MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023...
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Page 22: Assembly Of The Counter And Its Installation
4.9 Assembly of the counter and its installation (CTFH.25) The FH series dehumidifiers needs for its proper installation, a casing made of galvanized steel recessed in the wall. The housing will al- ways be supplied separately and removed. For his installation, proceed to the assembly by following the instructions in this drawing, using the provided screws. -
Page 23: Installation Of Dehumidifier Into The Formwork
The dehumidifier is connected to the cooled water plant to grant the inlet in ambient of air in neutral conditions. On the units FH-FHW the connection is done using the female gas attacks ½” always present on the unit. Condensate drain Power supply Hydraulic connections MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 24: How To Vent The Unit
How to vent the unit For a correct operation of the system it is mandatory to remove the air from the hydraulic circuit. To do that Hidros recommend to use the proper vent valve positioned in front of the unit (see picture). -
Page 25: Fh Standard Version: Remote Mechanical Hygrostat Connection (Hygr.20)
Speed wired in factory. Hygrostat/Thermostat Common Hygrostat Common ø HYGRO-THERMOSTAT ø °C ø ø Summer ø Winter Summer/Winter switch (not supplied) MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 26: Filter Extraction
(inlet grille). The grid serves to ensure a correct distribution of the air, is hooked to the formwork by means of hooks provided as standard. The grille is secured to the formwork by means of bolts supplied as standard. Bolts for formwork fixing MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 27: Electric Connections: Preliminary Safety Information
Make all connections to ground provided by law and legislation. Before any service operation on the unit, be sure that the electric supply is disconnected. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 28: Electrical Data
Closing this contact, only the fan works. The dehumidification mode is not in function. WZ version units must be connected to an ambient Hygrostat/Thermostat. Failure to use one of the two components prevents proper operation in different modes. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... - Page 29 Cable n. 18 connected at M: MEDIUM SPEED Cable n. 18 connected at H: HIGH SPEED GENERAL ALARM It is used to remote unit general alarm. Terminal closed: Unit alarm IN Terminal open: unit WORKING MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023...
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Page 30: Unit Start Up
Red led ON or blinking: see paragraph 6.4 indicates that the units is executing the defrost cycle; led fastly blinking: execution of drop cycle at the defrost end; MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 31: Use
Led red and yellow flashing simultaneou- sly. Gas discharge unit Please contact servive center. NTC sensor error alarm. LED alternately flashing red and yellow. PTC probe sensor damage Please contact servive center. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 32: Maintenance Of The Unit
In any case, the taps must remain closed as less as possible. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 33: Drive Access
Aluminium coil fins are very sharp and can cause serious wounds. Care must be taken when working in their surroundings. After servicing, replace the cover panels, fixing them with locking screws. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... - Page 34 “Obligations regarding the containment, use, recovery and destruction of fluorinated greenhouse gases used in sta- tionary refrigeration, air conditioning and heat pump equipment”. It can be carried out with a higher frequency (also weekly) depending on the ∆t. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023...
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Page 35: Refrigerant Circuit Repair
• When replacing the compressor following a burn out, it is advisable to wash the cooling system with appropriate products including a filter for acid. • When under vacuum do not switch on the compressor. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 36: Decommissioning
Read the instructions carefully before using the unit for the first time. It is recommended not to use the product for any purpose other than that for which it was designed, as there is a risk of electric shock if used improperly. MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 37: Diagnosis And Troubleshooting
Fan starts, compressor does not start Electronic board defective Replace defective board The unit is powered, the fan does not Electronic board defective Replace defective board start MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... -
Page 38: Dimensional Drawings
Dehumidifiers for radiant cooling system 10.DIMENSIONAL DRAWINGS MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023... - Page 39 Dehumidifiers for radiant cooling system FH (GRFH) MTEC.4690.GB-C-1 Operation and maintenance manual FH series English Rev. C 11-2023...
- Page 40 Sede operativa: Via E.Mattei, 20 ▪ cap 35028 ▪ Piove di Sacco (Pd) Italy Tel. +39 049 9731022 ▪ Fax +39 049 5806928 Info@hidros.it ▪ www.hidros.it P.IVA e C.F 04297230403 ▪ R.E.A. FO 337725 Technical data shown in this booklet are not binding.
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