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Table of Contents
Summary of Contents for Immergas FH 25WZ
- Page 1 DEHUMIDIFIER Instruction and warning book...
- Page 3 Dear Customer, Our compliments for having chosen a top-quality Immergas product, able to assure well-being and safety for a long period of time. As an Immergas customer you can also count on a qualified after-sales service, prepared and updated to guarantee constant efficiency of your appliance. Read the following pages carefully: you will be able to draw useful suggestions regarding the correct use of the appliance, the respect of which, will confirm your satisfaction for the Immergas product.
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Page 4: Table Of Contents
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 ......................................6 1.7 General description of symbols used ..............................7 1.8 Safety symbols used .....................................8 1.9 Limitations and prohibited use ................................8 2. -
Page 5: Introduction
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 prohibited. 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. The Company will not be liable for claims for damage caused to persons, animals, material goods or property caused by improper installation, adjustment and maintenance or improper use. Any use not specified in this manual is prohibited. -
Page 6: Potential Risks
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 RISK POTENTIAL RISK METHOD OF INJURY... -
Page 7: General Description Of Symbols Used
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: Safety Symbols Used
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: Safety
2. SAFETY 2.1 Warning re potentially hazardous toxic substances R134a: 2.1.1 Identification of the Type of Refrigerant Fluid Used: Tetrafluoroethane (HFC134a) 100% by weight CAS No.: 000811-97-2 2.1.2 Identification of the Type of Oil Used. 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 10: Procedures In The Event Of Accidental Release Of Refrigerant
2.4 Procedures to be adopted in the event of accidental release of refrigerant Ensure suitable personal protection (especially respiratory protection) during cleaning operations. If deemed safe, isolate the source of the leak. If the leakage is small and if adequate ventilation is provided, allow the refrigerant to evaporate. If the loss is substantial ensure that measures are taken to adequately ventilate the area. -
Page 11: Unit Description
3. TECHNICAL CHARACTERISTICS 3.1 Unit description The dehumidifiers are built vertically, equipped with robust galvanised steel frame, properly designed to operate in combination with radiant cooling sy- stems. The units have been designed both to ensure the dehumidification of the air under conditions of air thermally neutral, ie at the same temperature at which they levy it, both in conditions of cooled air, managing very small air flow thus avoiding uncomfortable drafts typical of traditional air conditioning. The units, can operate even without pre and post cooling coils, this option could be very useful in middle seasons when it is necessary to dry but the air conditioning system is not in operation. -
Page 12: Accessories
3.1.11 Control and protection devices All units are supplied with the following control and protection devices: Water temperature sensor, that signals to the microprocessor the eventual overcome of the hot water temperature set point in the pre and post water coils during winter operation. -
Page 13: Unit Components
3.3 Unit components Frontal view Back view Air filter Electronic card Pre-cooling coil Condensing drain Bracket Compressor Condenser water... -
Page 14: Refrigerant Circuit Layout
3.4 Refrigerant circuit layout The operation of the dehumidifier model GH is as follows: the fan takes the air from the ambient (7) and it’s made go through the filter (1) and the pre-cooling water coil (2) where it’s cooled and brought to a condition closed to saturation. Now it passes through the evaporating coil (3) where it’s fatherly cooled and dehumidified. At this point there are two possible modalities: • Modality with neutrum air: The air passes now through the condensing coil (5) which allows to condensate the 50% of the total gas, (the unit condensate the 50% on air with the heat exchanger (5) and the 50% in water with the heat exchanger (10)) then there is the postheating so that to avoid to send air in the ambient in neutrum thermic conditions. • Modality with cooled air:The unit condensates the 100% in water through the heat –exchanger (10). The air, then, go through the condenser (5) (disabled) where does not change its characteristics (temperature and humidity). -
Page 15: Technical Data
3.5 Technical data Model FH 25WZ Refrigerant R134a R134a Refrigerant charge 0,25 Global warming potential (GWP) 1430 1430 Equivalent CO charge 0,36 Dehumidification capacity l/24h 20,1 20,1 Power supply V/Ph/Hz 230/1/50 230/1/50 Cooling capacity 1250 Nominal input power Nominal input current Maximum input power Maximum input current Pre+Post nominal water flow... -
Page 16: Operation Limits
3.7 Operation limits Air Temperature (°C) Water 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 conditions, please contact our technical office. -
Page 17: Safety Devices
3.9 Safety devices 3.9.1 High pressure switch The high pressure switch stops the unit when the condensing pressure is higher than the set value. The restart is manual (you need to press the button on the pressure switch) and it can be carried out only when the pressure is under the value indicated by the differential set. 3.9.2 Defrost thermostat It’s a device which signals to the electronic control, the necessity to make the defrost cycle. -
Page 18: Health And Safety Considerations
4.2. Health and safety Considerations The workplace must be kept clean, tidy and free from objects that may prevent free movement. Appropriate lighting of the work place shall be provided to allow the operator to perform the required operations safely. Poor or too strong lighting can cause risks. -
Page 19: Storage
4.5 Storage Units should be stored under cover and ideally, should remain in their packaging. The tools that are supplied for opening the electrics box should be formally transferred to the person responsible for the plant. 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. - Page 20 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 dedicated screws supplied. 80mm...
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Page 21: Assembly Of The Counter And Its Installation
4.9 Assembly of the counter and its installation The dehumidifier needs for its proper installation, a casing made of galvanized steel recessed in the wall. The housing will always be supplied separately and removed. For his installation, proceed to the assembly by following the instructions in this drawing, using the provided screws. Before fitting the formwork into the dedicated niche , pre-slice kit must be open to facilitate its fastening (see photograph below). -
Page 22: Installation Of Dehumidifier Into The Formwork
Pre-slice panel Special Bolts to fix grilles at site supplied as standard. Formwork assembled 4.10 Installation of dehumidifier into the formwork The dehumidifier will be inserted in the formwork, possibly cutting the pre-slice placed in correspondence of the connections, in order to facilitate insertion. The final attachment to the formwork will be carried out on the right and left sides with screws, using the holes provided. 4.11 Condensate draining connections Condensate draining on dehumidifiers should be done with a rubber pipe passing fixed to a pipe fitting with an external diameter of 20 mm located on the lateral panel. On the condensate discharge pipe it must be installed a syphon with a minimum height equal to the suction pressure of the fan. 4.12 Water coil hydraulic connection The dehumidifier is connected to the cooled water plant to grant the inlet in ambient of air in neutral conditions. On the units GH-GHW the connection is done using the female gas attacks ½”... -
Page 23: How To Vent The Unit
For a correct functioning of the unit, it’s advisable to bleed carefully the circuit using the vent valve present in the unit. The inlet maximum water temperature allowed is 45°C. The inlet maximum water temperature allowed is 15°C. 4.13 How to vent the unit For a correct operation of the system it is mandatory to remove the air from the hydraulic circuit. -
Page 24: Remote Mechanical Hygrostat Connection (Hygr.30)
To allow the correct functioning of the dehumidifiers, it’s important to grant a constant air flow to the unit. This flow must be close to the nominal value (see the drawing). The maximum tolerance allowed is 20%. . The installer will take care to verify, during the start-up, the air flow to the unit and modify, if necessary, the speed of the fans. If the air speed through the evaporating coil exceed the 1,5÷2 m/s, the dehumidification capacity of the unit is strongly reduced and the required environmental conditions can be compromised. Speed wired in factory. 4.15 Remote mechanical hygrostat connection (HYGR.30) Hygrostat Common ø HYGRO-THERMOSTAT ø °C ø ø Summer ø Winter Summer/Winter switch (not supplied) -
Page 25: Filter Extraction
4.16 Filter extraction The filter extraction of a dehumidifier is made unscrewing the two screws which fix it to the frame, as shown in the following images, 4.17 Supply and return grilles installation After the assembly and installation of the formwork, inside which it is secured the unit, must be fitted to the formwork itself the supply and return grille. The supply and return grill, is a panel made of lacquered wood which has two grids, a small top (grille) and a larger (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. -
Page 26: Electric Connections: Preliminary Safety Information
4.18 Electric connections: preliminary safety information 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: Pipe for electrical cables Power connections must be made in accordance to the wiring diagram enclosed with the unit and in accordance to the norms... -
Page 27: Electrical Data
FROST PROTECTION If opened, the main switch cuts the power off to any electric heater and antifreeze device supplied with the unit, including the compressor crankcase heaters. The main switch should only be disconnected for cleaning, maintenance or unit reparation. 4.19 Electrical data The electrical data reported below refer to the standard unit without accessories. - Page 28 4.20.1 Remote wiring connections (compulsory) The numbers of terminals block may change without notice. For links is therefore necessary to ALWAYS make the wiring diagram supplied along with the unit. REMOTE ON / OFF (Only WZ versions) To switch the unit on or off from remote control. Use voltage free contacts.
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Page 29: Unit Start Up
5. UNIT START UP 5.1 Preliminary checks Before starting the unit the checks detailed in this manual of the electric supply and connections, the hydraulic system and the refrigerant circuit, should be performed. Start-up operations must be performed in accordance with the instructions detailed in the previous paragraphs. 5.1.1 Before start-up Damage can occur during shipment or installation. -
Page 30: Wiring Diagram
5.2 Wiring diagram 6-24 5.3 Control panel Icon Meaning Electrical supply (green): indicates that green switch has been turned in On position and the unit is electrically supplied. Compressor led (green): indicates compressor status with the following meanings: led ON: compressor running; led blinking: compressor time delay to start;... -
Page 31: Use
6. USE 6.1 Unit switch on and first start up The operation mode is identical to the standard version and, in addition to the humidity control (hygrostat), they also control the temperature by means of a ambient thermostat. The hygrostat activate the dehumidification mode with neutral air , while the thermostat activate the dehumidification mode with air-cooled. 6.2 Stop To switch off the unit place the main line in OFF. 6.3 Stand-by When the unit is switched off from the hygrostat a/o thermostat the unit will be than in standby mode. -
Page 32: Maintenance Of The Unit
7. MAINTENANCE OF THE UNIT 7.1 General warnings Maintenance can: • Keep the equipment operating efficiently • Prevent failures • Increase the equipment life It is advisable to maintain a record book for the unit which details all operations performed on the unit as this will facilitate trouble- shooting. -
Page 33: Refrigerant Circuit Repair
7.3.2 End of seasons or unit switched off: If one is planning not to use the unit for a long period, the hydraulic circuit must be emptied, so that there is more water in the pipes and in the heat ex- changer. -
Page 34: Disposal, Recovery And Recycling
8.2 Disposal, recovery and recycling The frame and components, if unusable, should be taken apart and sorted by type, especially copper and aluminum that are present in large quantities in the machine. All materials must be recovered or disposed in accordance with national regulations. 8.3 RAEE Directive (only UE) •... -
Page 35: Dimensional Drawings
10.DIMENSIONAL DRAWINGS Dimensional drawing... - Page 36 Dimensional drawing formwork (CTFH.25) Dimensional drawing supply and return grilles (GRFH)
- Page 40 NOTE: correct periodic maintenance is highly recommended. Follow us on Immergas Italia Immergas TOOLBOX The App designed by Immergas for professionals Disponibile su Disponibile su Disponibile su immergas.com To request further specific details, sector Professionals can also use the following e-mail address: consulenza@immergas.com...