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DryGair Dehumidification Unit

Troubleshooting and Repairing the Unit

Ver. 06/2020

TROUBLESHOOTING AND REPAIRING THE

UNIT

8.1

Troubleshooting

The troubleshooting section provides malfunction symptoms, the possible

cause, and what may be done to overcome.

Symptom

Possible Cause

Remedy

Unit is not operating

No power to the unit

Check the power from the power

supply panel

Overload tripped

Reset the overloads

Little or no airflow

Fan motor is burnt

Replace the fan

Refrigeration coils are dirty

See section 7—Maintaining the unit

Loose electrical wiring

connections

Check the wiring diagram to find the

fault and repair

Circuit breaker tripped

Reset the circuit breaker

Little or no water extraction

Insufficient airflow

Check and perform the suggestions

for the above "Little or no airflow"

symptom

Compressor fault

Contact the factory service center

Loss of refrigerant

Contact the factory service center

Unit vibrates excessively

Loose compressor

Tighten the nuts of the compressor

mounts

Damaged fan

Replace the fan

Spring spacers not removed

Remove spring spacers

Water flooding inside the

machine

Drain-pipe is blocked/frozen

Clear the obstruction

Drain-pipe is too high

Ensure that no section of the drain

hose is above the level of the water

outlet

Crimped or blocked tubing

Straighten, clear, or replace the

tubing

Compressor is not working

while the fans are working

High-pressure switch fault

Press the HP switch button

Oil pressure switch fault

Press the oil pressure switch button

Circuit breaker tripped stage 1 Press circuit breaker stage 1
Circuit breaker tripped stage 2 Press circuit breaker stage 2
Compressor overload tripped

Reset the overload

Fans are not rotating

Possible failure of the no-volt

relay component

Check that there is no failure of the

no-volt relay component

Fans are rotating

counterclockwise (blowing

air into the unit)

The power supply cable is not

connected correctly

Go to the main power supply

connections and reverse two of the

cables (from R S T to R T S)

Содержание DG12

Страница 1: ...June 2020 Ver 06 2020 DryGair Dehumidification Unit Installation Operation and Maintenance Manual 50 Hz EU Models ...

Страница 2: ... 7730989 drygair energies Proprietary and Confidential Copyright 2020 by DryGair Energies Ltd All rights reserved No part of this manual may be reproduced or copied in any form by any means graphic electronic or mechanical including photocopying typing or information retrieval systems without written permission of DryGair Ltd ...

Страница 3: ...0 iii TABLE OF CONTENTS 1 Introduction _________________________________________ 1 2 Safety ______________________________________________ 3 3 Unit Overview ________________________________________ 6 4 Installation __________________________________________ 9 ...

Страница 4: ...v 5 Unit Parts and Components ___________________________ 22 6 Unit Operation ______________________________________ 32 7 Maintaining the Unit__________________________________ 41 8 Troubleshooting and Repairing the Unit _________________ 47 ...

Страница 5: ...DryGair Dehumidification Unit Table of Contents Ver 06 2020 v 9 Appendices_________________________________________ 49 10 Comments and Notes ________________________________ 92 ...

Страница 6: ...0 Figure 5 11 Electronic Expansion valve DG 12 EU _____________________________ 30 Figure 5 12 Sight glass ____________________________________________________ 31 Figure 5 13 Axial blowing fans ______________________________________________ 31 Figure 6 1 Humidistat controller _____________________________________________ 35 Figure 9 1 Four direction canopy _________________________________________...

Страница 7: ...ication Unit List of Tables Ver 06 2020 vii LIST OF TABLES Table 4 1 Parts and Accessories ____________________________________________ 15 Table 9 1 Main Parts List __________________________________________________ 91 ...

Страница 8: ......

Страница 9: ...on unit read this manual The DryGair dehumidification Operation and Maintenance Manual provides information and procedures for installing and operating the unit as well as maintenance troubleshooting and repair procedures When reading pay special attention to The safety instructions The conventions They explain the symbols used in this manual Before beginning a procedure read the procedure through...

Страница 10: ...essage warns of a possible hazard to personnel and extreme hazard to the unit Caution Information given in a caution message refers to the safe operation of the unit and provides a warning where the possibility for damage to the equipment exists Note Information given in a note describes how the part unit functions or provides a tip on how best to use it ...

Страница 11: ...d off and disconnected before beginning maintenance procedures part replacements or repairs We advise strict observance of the work safety standard as defined by the authorities in each country DryGair cannot accept responsibility for injury to persons or damage to objects resulting from not observing safety standards 2 1 Hazards Danger Electrical Shock Hazard High voltage is present at points thr...

Страница 12: ...ated and what to do in case of an electrical emergency Locate approved types of fire extinguishers near the equipment 2 3 Maintenance Safety Notes Only authorized personnel are permitted to perform maintenance and repair tasks Before performing such a task read the instructions to ensure you understand them and that the required precautions and tools are available For high mounted maintenance proc...

Страница 13: ... operating current Serial No The serial number of the specific unit Refrigerant The type of refrigerant used in the unit Quantity The amount of refrigerant to fill in the unit GWP Global warming potential parameter CO2 Equivalent Emissions comparison measurement between Refrigerant and CO2 Input watt The power required by the unit at 18 C and 80 RH Total weight The overall weight of the unit The f...

Страница 14: ...ed during the dehumidification process is removed from the greenhouse through water drainage and can be reused for other purposes such as a hydroponic system 3 1 Standard Features The standard unit includes the following features Humidification Set Point ensures the humidity in the greenhouse is kept at this set point Temperature Control stops the unit when the temperature drops to 10 C to protect...

Страница 15: ... option for adding noise insulation to receive a quieter unit Protecting Wire Net a net for protecting the coil outer fins from mechanical damage Air Filter a fine mesh filter for protecting the coils dust and other small particles Chemical Protective Coating the unit parts are made of materials that improve their resistance to chemicals and soil disinfectants Wheels set of wheels for unit mobilit...

Страница 16: ...mpressor Door to the electrical compartment Temperature and humidity sensor Removable cover to the service compartment Coils Filter driers Expansion valves Temperature and humidity sensor Fans and air distributor 4 way canopy Figure 3 1 DryGair unit front view Air inlet to coils Removable cover to the compressor and the drain outlet Removable cover to the compressor pressure switches Air distribut...

Страница 17: ...onsiderations The DryGair unit should be installed inside a greenhouse and located in an accessible location for operation and maintenance The unit should preferably be positioned in the center of the greenhouse blowing air towards the plants If the unit is placed next to the greenhouse wall ensure it is distanced at least 50 centimeters from the wall and blowing air towards the plants The unit in...

Страница 18: ...G 6 3 24 Amp DG 6 EU 3 32 Amp DG 13 3 63 Amp Prepare drainage for removal of the water that is condensed by the unit The unit is supplied with a metal 1 BSP threaded bushing The prepared drainage should include a siphon Warning The unit condensation water is not for drinking Note EU models utilize refrigerant gas type R513a The site should be equipped with suitable climbing equipment to enable saf...

Страница 19: ...and work areas of the crane forklift truck or other lifting handling equipment Moving and lifting the unit should be done with suitable belts chains Always act with extreme caution to prevent personal injury and damage to the unit or its parts When using a forklift be sure not to damage the compressor Caution The DryGair unit should be lifted only from its front or rear A LIFT notice is attached t...

Страница 20: ...htly closed 2 Secure the compressor With a belt to a firm part of the unit structure to avoid overweight on the compressor s screws Or Place a piece of wood in the gap between the compressor and the unit side post to support the compressor s high end 3 Verify the panels of the unit top fans are mounted well 4 Protect the coils with polystyrene or plywood Caution If the unit is tilted during its tr...

Страница 21: ... and reassembled on site by an experienced technician during the installation procedure Before proceeding with the installation procedure examine the shipping documents and packing crate labels against the purchase order In case of discrepancy contact your local DryGair representative 4 2 4 Initial Inspection Upon receipt inspect the exterior of the packaged unit for any damage that might have occ...

Страница 22: ...and its parts are delivered wrapped in bubble wrap and stretch wrap Caution Do not open the packing with sharp tools To unpack the unit 1 Remove the stretch wrap from around the unit 2 Remove the bubble plastic sheet 3 Open the right cover remove it from the unit and remove the polystyrene sheet from around the coils 4 Return the cover and secure it 5 Remove the bubble wrapping and the wrapping ny...

Страница 23: ...anopy 1 Accessories N A Rubber pads shock absorbing and leveling 6 Screws and Washers N A Brackets for the Air Distribution Module 4 Located in the electrical compartment The accessories are in a bag inside the service compartment see Figure 3 1 Located in the compressor compartment Note Verify all parts and ordered items were received and that they are not damaged Inform the carrier and your loca...

Страница 24: ...d for leveling the unit Note For split units see specific details in Appendix D section D 2 2 Lift the unit and position it on the rubber pads 3 Level the unit and verify it is stable To remove the compressor locks Note Before removing the braces check there are no oil leaks and verify the joins and pipes are in place 1 Loosen the nuts securing the compressor just to the point the securing braces ...

Страница 25: ... types see Appendix C Note The type of air distribution module must be pre ordered It cannot be added or retrofitted on site 4 5 1 Four Direction Canopy The four direction canopy distributes the air coming from the unit to four directions This canopy type is efficient when the DryGair unit is positioned in the center of the greenhouse away from the greenhouse walls Note The four direction canopy i...

Страница 26: ... Canopy and One Direction Canopy For details on the side canopy and one direction canopy see Appendix C To connect the Air Distribution Module Canopy Warning Observe safety regulations when using a stepladder to connect the Air Distributor Module Inspect the stepladder to makes sure it is in good condition Choose a safe spot to anchor the stepladder Work with a partner One person should hold the s...

Страница 27: ...nit 2 Connect the prepared drain pipe with a siphon to the threaded 1 BSP bushing drain outlet Drain outlet 1 BSP Drainage not supplied Figure 4 4 Water drain outlet 3 Route the drainage tube through one of the three exits from the unit Unit floor Rear Cover or Side cover There are pre made circular cut outs on the unit s side and rear covers which can be easily punched out using a screwdriver and...

Страница 28: ...supply Warning Verify the main power supply circuit breaker is turned OFF 1 Open the electrical compartment door Important The unit experiences motion during transportation Tighten all screws in the electrical switchboard before connecting the electrical main supply cable 2 Identify the grid connection terminal Figure 4 5 Electrical switchboard and electricity terminal block L1 L2 L3 N Grnd ...

Страница 29: ...wer cable to the grid terminal block terminals L1 L2 L3 N and Grnd 5 Replace the wire routing channel cover Figure 4 7 Replacing wire channel cover 6 Close the electrical compartment door 7 Connect the mains cable to the prepared external circuit breaker and power supply Note See other specific hardware and utility connections and other specific settings per unit configuration Units combined with ...

Страница 30: ...nts of the DryGair dehumidification unit 5 1 Temperature and Humidity Sensor The Temperature and Humidity sensor is connected at the air entrance to the unit Temperature and humidity sensor Figure 5 1 Temperature and humidity sensor The sensor unit is connected inside the service compartment upper left Temperature and humidity sensor unit Figure 5 2 Sensor unit 1 1 ...

Страница 31: ...ture Sensor The defrost temperature sensor measures the temperature of the coil and its surroundings It is positioned between the front heating coils and the air entrance fins Only its connecting cable is visually seen Defrost temperature sensor cable Figure 5 3 Defrost temperature sensor 1 ...

Страница 32: ...c compartment should only be done by authorized personnel or a certified electrician Figure 5 4 Electrical compartment 1 Main power switch 2 Fans contactors 3 Mode selection switch 4 Compressors contactors 5 Temperature and humidity controllers 6 Fault signal lights 7 Phase failure sequence relay NV relay 8 Compressor circuit breaker E3 The following figures show the main components in the electri...

Страница 33: ... switch Turns the unit On and Off Fan contactors Provide power to the fans Mode selection switch SW1 Switches between Local and Remote control Compressor contactors ST31 and ST32 Provide power to the compressor The two red pushbuttons are for resetting the contactors Reset switches ...

Страница 34: ...lay the temperature and the humidity The temperature controller comes preset from the factory and should not be adjusted Green Red signal lights Indicates unit fault Phase failure sequence relay NV relay A relay that operates when the voltage is lost Compressor circuit breaker E3 It provides power to the compressor ...

Страница 35: ...iew The compressor is mounted on spring type vibration eliminators which are supplied by the compressor manufacturer Caution The compressor springs include locking braces for transportation These transportation braces MUST be removed before operating the compressor Figure 5 6 Compressor rear view Compressor transportation spring locking braces 4 Compressor oil level sight glass ...

Страница 36: ... Switches Behind the left side cover are the oil pressure protector and two pressure switches Compressor oil compression safety switch High pressure switch Low pressure switch Figure 5 7 Oil pressure protector and switches Caution Do not change their settings they were tested and adjusted at the factory 1 2 3 ...

Страница 37: ...artment is located behind the right side cover Figure 5 8 Service compartment DG 12 Note The service compartment is different in units with the Heating and Cooling option see Appendix D section D 1 Expansion valves 2 Figure 5 9 Expansion valve The EU models have different components in the service compartment 1 ...

Страница 38: ...ice Compartment DryGair Energies Ltd 30 Figure 5 10 Service compartment DG 12 EU Expansion valve 2 Expansion valve controller Figure 5 11 Electronic Expansion valve DG 12 EU Note The EU models utilize refrigerant gas type R513a 1 2 ...

Страница 39: ...rovides an indication to the refrigerant in the coils Green OK if dry Yellow Fault if wet The continuous presence of bubbles indicates a loss in the refrigerant 5 7 Blowing Fans There are two axial blowing fans on the top of the unit Blowing fans 2 Figure 5 13 Axial blowing fans The two fans circulate the air that passes through the dehumidification unit 1 1 ...

Страница 40: ... What is behind each cover and risks related to that area The electrical compartment high voltage and low voltage areas Operating the unit and stopping the unit The climate control system if applicable Caution According to the kind of work being performed on the unit wear personal protection devices such as helmet eye protection glasses protection shoes ears noise protection etc All according to s...

Страница 41: ...yGair Energies Ltd Note For split units see and follow the instructions provided in Appendix D section D 2 Caution Before powering the unit on visually check that all doors and covers of the unit are closed and that the unit inside and surroundings are clean from any parts tools etc 6 2 1 Preliminary Checks 1 Make sure the main switch is OFF and that unauthorized persons are not near the machine 2...

Страница 42: ... injury or death Before opening the unit electrical compartment ensure you are familiar with the location of the external circuit breaker to the unit 2 Open the electrical compartment and toggle the compressor circuit breaker to its ON position 3 Rotate the main switch to its ON position Powering OFF is performed when the unit is not in use or before performing maintenance and service procedures T...

Страница 43: ...ctual humidity level is displayed 6 2 4 The Temperature Sensor The main temperature sensor is factory set to 10 C If the measured temperature drops to 10 C the compressor stops working fans continue The defrost temperature sensor is factory set to 6 C If the measured temperature on the coils is below 6 C the unit enters a 7 minute defrost cycle in which the compressor stops but the fans continue o...

Страница 44: ... operated and controlled by computer software and 24 VAC that activate relays in the unit switchboard See Appendix E for details on how to connect the DryGair unit to a climate control system and how to configure its parameters It should be noted that even in the Remote mode the unit stops working when the external temperature sensor measures 10 C and goes through a 7 minute defrost cycle when the...

Страница 45: ... humidity according to the night plant transpiration rate to allow maximum efficiency for the grower AS NEEDED On cloudy rainy days the outside air is humid which makes ventilation less effective DryGair should be activated Due to the heightened levels of humidity caused by daytime plant transpiration it is important to monitor humidity levels during the day and supplement DryGair s operation with...

Страница 46: ...n rates that are ten times higher than those occurring at night The greenhouse temperature increases and additional water vapor is released into the air from the heat absorbed into the soil Very high amounts of water vapor are released into the greenhouse during the day Ventilation is often used to release heat which collects in the growing facility during the day and given the appropriate outdoor...

Страница 47: ...g Before turning on the unit make sure the inside of the unit is clear from any objects and that there are no unauthorized people around the machine 4 Rotate the Main Switch SW1 to its ON position 5 Check the following The two fans are operating and are rotating in a clockwise direction blowing air out of the unit If there is a problem do the following If the fans are not rotating check there is n...

Страница 48: ...ve and the unit operation is controlled by the humidity setpoint and commands from the connected climate control unit remote PC Regardless of the operation mode local remote when the temperature drops to 10 C the unit goes through a 7 minute defrost cycle every hour if the measured coil temperature is below 6 C The sequence can be changed only by the DryGair technician The coil temperature sensor ...

Страница 49: ... unit Caution Avoid direct water contact with the unit sensors Do not immerse them in water and or spray direct water at them 7 1 Daily Maintenance Perform the following every day Visually inspect the unit verifying the unit is operating properly and noticing if there is anything unusual Clean the unit and its surroundings from any foreign material 7 2 Monthly Maintenance Warning Before performing...

Страница 50: ...s performed by a qualified DryGair person or representative and having an HVAC person or electrician for assistance The quarterly maintenance Paint damaged or chipped body paint to preserve the unit body Check that the fans are firmly secured to the motor shaft and that the fan rotates freely The fan motor is sealed for life and therefore does not need to be lubricated Check that the compressor is...

Страница 51: ... systems can be hired to clean the DryGair HVAC parts If you choose to hire an external cleaning service make sure they are qualified and certified and have reviewed this cleaning protocol and the operation manual 7 5 2 Preliminary Procedures 1 Visually inspect the system verifying the system is operating properly and noticing if there is anything unusual 2 Clean the system and its surroundings fr...

Страница 52: ...e dirt out from behind the fins with low pressure compressed air To prevent any damage to the fins it is best not to aim the air nozzles directly at the coils Alternatively gently vacuum clean the coils 2 Gently wipe the coils with a semi wet cloth 3 Further cleaning can be done by steam or by using a cleaning substance meant for cleaning air conditioning systems For example ACE Foam N Clean Coil ...

Страница 53: ...tions by their manufacturer 4 Apply or spray the material along the drainage basin at a slow flow 5 After completing the basin cleaning leave the unit covers and doors open to ensure all internal parts are dry 6 Check the electrical compartment to ensure nothing got wet and that there is no moisture 7 5 5 Antibacterial and Antifungal Treatment It is possible to apply antibacterial and antifungal m...

Страница 54: ... corrosion of the metal parts and damage to the electrical apparatus 1 Carefully clean the unit and dry it with a clean cloth 2 Use a vacuum cleaner to clean difficult to reach areas Caution Do not use gasoline or solvents which might damage the paintwork transparent parts cable insulation etc 3 Remove oil and sludge with a clean cloth If necessary use a paintbrush dipped in oil or cleaning materi...

Страница 55: ...e center Unit vibrates excessively Loose compressor Tighten the nuts of the compressor mounts Damaged fan Replace the fan Spring spacers not removed Remove spring spacers Water flooding inside the machine Drain pipe is blocked frozen Clear the obstruction Drain pipe is too high Ensure that no section of the drain hose is above the level of the water outlet Crimped or blocked tubing Straighten clea...

Страница 56: ...nt see tables in Appendix A Any professional refrigeration technician will be able to service the equipment The following procedure must be used 1 Turn the unit off 2 Find the source of the leak Note For evacuating and recharging the unit use the crimped and brazed charging stub attached to the side of the refrigerant compressor 3 Evacuate the unit from the remaining refrigerant before recharging ...

Страница 57: ...idification Unit Appendices Ver 06 2020 49 9 APPENDICES Appendix A Standard Units Specifications R507 Refrigerant Unit Specifications are also available online https drygair com dehumidifiers A 1 DG 12 Standard Unit ...

Страница 58: ...Appendices Standard Units Specifications R507 Refrigerant DryGair Energies Ltd 50 A 2 DG 6 Small Unit ...

Страница 59: ...DryGair Dehumidification Unit Appendices Ver 06 2020 51 A 3 DG 12 Standard Split Unit ...

Страница 60: ...Appendices Standard Units Specifications R507 Refrigerant DryGair Energies Ltd 52 A 4 DG 6 Small Split Unit ...

Страница 61: ...DryGair Dehumidification Unit Appendices Ver 06 2020 53 A 5 DG 12 Standard Unit with Heating Cooling ...

Страница 62: ...Appendices Standard Units Specifications R507 Refrigerant DryGair Energies Ltd 54 A 6 DG 6 Small Unit with Heating Cooling ...

Страница 63: ...DryGair Dehumidification Unit Appendices Ver 06 2020 55 A 7 DG 12 Standard Split Unit with Heating Cooling ...

Страница 64: ...Appendices Standard Units Specifications R507 Refrigerant DryGair Energies Ltd 56 A 8 DG 6 Small Split Unit with Heating Cooling ...

Страница 65: ...DryGair Dehumidification Unit Appendices Ver 06 2020 57 A 9 DG 13 Warm Climate Unit ...

Страница 66: ...els Specifications R513a Refrigerant DryGair Energies Ltd 58 Appendix B EU Models Specifications R513a Refrigerant Unit Specifications are also available online https drygair com dehumidifiers B 1 DG 12 EU Standard Unit ...

Страница 67: ...DryGair Dehumidification Unit Appendices Ver 06 2020 59 B 2 DG 6 EU Small Unit ...

Страница 68: ...Appendices EU Models Specifications R513a Refrigerant DryGair Energies Ltd 60 B 3 DG 12 EU Standard Split Unit ...

Страница 69: ...DryGair Dehumidification Unit Appendices Ver 06 2020 61 B 4 DG 6 EU Small Split Unit ...

Страница 70: ...Appendices EU Models Specifications R513a Refrigerant DryGair Energies Ltd 62 B 5 DG 12 EU Standard Split Unit with Heating Cooling ...

Страница 71: ...DryGair Dehumidification Unit Appendices Ver 06 2020 63 B 6 DG 6 EU Small Unit with Heating Cooling ...

Страница 72: ...Appendices EU Models Specifications R513a Refrigerant DryGair Energies Ltd 64 B 7 DG 12 EU Standard Split Unit with Heating Cooling ...

Страница 73: ...DryGair Dehumidification Unit Appendices Ver 06 2020 65 B 8 DG 6 EU Small Split Unit with Heating Cooling ...

Страница 74: ...he unit to four directions This type of canopy is efficient when the DryGair unit is positioned in the center of the greenhouse away from the greenhouse walls Figure 9 1 Four direction canopy The 4 way canopy is not symmetric Connect the canopy with its moderate slope towards the unit right side when viewing from the front using the provided brackets and screws in a small bag in the service compar...

Страница 75: ...DryGair Dehumidification Unit Appendices Ver 06 2020 67 Figure 9 2 Air distributor module 4 way canopy Moderate slope ...

Страница 76: ...e greenhouse walls Note Make sure to place the unit with a minimum distance of 50 cm from the greenhouse wall to allow airflow into the rear coils The side canopy is composed of two parts where each part is placed above one of the unit s fans and facing in the desired direction Install the canopy by placing each half facing the desired direction and secure them with the screws provided in a bag in...

Страница 77: ...Direction Canopy This small one direction canopy option is separately connected above each fan blowing the air in one direction This type of canopy is efficient when the DryGair unit is positioned in a narrow or long narrow location Figure 9 4 Air distribution panel ...

Страница 78: ...om an external source which flows through a horizontal heat exchanger located between the unit s heat exchangers and the unit fans The temperature is controlled by the amount of water flowing through the heat exchanger which is modulated by a proportional rotary actuator temperature valve When there is a demand for heating cooling the valve gradually closes the opening to the by pass pipe The dema...

Страница 79: ...mperature valve controller determines the temperature produced by the unit and is located inside the electrical compartment on the bottom right The operating mode heating or cooling and the desired temperature set point need to be defined Figure 9 6 Temperature valve controller The following instructions explain how to manually adjust the temperature on the controller located inside the unit For i...

Страница 80: ... For Celsius set the value to 0 For Fahrenheit set the value to 1 6 Press Set to temporarily save the value The parameter c18 is displayed 7 Press the Prg button for 5 seconds to permanently save the set value and exit the parameter setting mode To define the Temperature Set Point the temperature to achieve in the growing facility 1 Press Set The display will read ST1 and then show the current set...

Страница 81: ...udes the compressor and the electrical switchboard Upper section includes the parts for treating the air Figure 9 7 DryGair split unit The unit sections can be placed one next to each other or one above the other air treatment section above the compressor and electrical switchboard section In both cases the upper section must be placed at a height of at least 50 60 cm from the floor Both the upper...

Страница 82: ...e shows the lower section connecting tubes Figure 9 8 Connecting copper tubes lower section Discharge tube red 1 dia tube In EU models 1 dia Suction tube blue and usually isolated 1 dia tube In EU models 2 dia The tubes include a Schrader valve that is used for the connecting procedure ...

Страница 83: ...er completing the tubes soldering process see section D 2 1 1 Figure 9 9 Tube stop valves lower section left upper section right D 2 1 1 Soldering the Tubes Required Parts Tubes compatible in size with the tubes to be connected Isolating material 19 mm thick for isolating the copper suction tube Copper soldering materials Caution Soldering the copper tubes must be performed by a qualified refriger...

Страница 84: ...nd leakage tests a Insert Nitrogen at a pressure of up to 400 psi 28 bars into the connected tube see Figure 9 8 b Check for leaks with a leak detection device or even better with soapy water bubbles at the leak point c If a leak is found fix it 4 Evacuate the Nitrogen from the tested section and remove the remaining air with a vacuum pump until it is completely empty 5 Open the stop valves of bot...

Страница 85: ...he temperature and humidity sensors A thin black cable that connects to the defrost sensor Figure 9 10 Electrical cables The cables should be connected to the electrical switchboard according to the electrical diagram attached inside the electrical compartment Important Do not shorten the wires They are about 5 meters long and are outfitted with cable end connectors Place excess wiring in the lowe...

Страница 86: ...ct white and black wires of the thin black cable to terminal blocks 50 and 51 the connection order has no significance This connects to the defrost sensor e Connect the six colored wires of the white cable to terminal blocks 51 56 according to the color scheme shown on the electrical diagram These connect to the temperature and humidity sensors See wire connections by color code in the following F...

Страница 87: ...er is not for drinking Connecting the unit to a water drain shall be performed by the customer Figure 9 13 Water drainage Note To prevent water accumulation the water drain tube should be connected by a plumber to a drainage line leading outside the greenhouse or to any other place the water should be collected such as a container The water can be further used for various purposes as a hydroponic ...

Страница 88: ...ng Split units with the heating cooling option come with an additional black three wires cable usually blue brown and green yellow These wires should be connected to the electrical switchboard terminal blocks according to the electrical diagram D 2 3 2 Water Connections The water connections to the hot cold water supply shall be performed by the customer The pipes will be supplied by the customer ...

Страница 89: ...eives a signal to operate between the required operating hours usually from sunset to sunrise Terminals 42 and 43 Remote drying command to start and stop dehumidification digital output from the computer This signal turns the dehumidification on off based on the humidity sensor data and the humidity setpoint in the climate control system Drying on When dehumidification is required e g high humidit...

Страница 90: ... described in section E 1 above E 2 2 Temperature Control The temperature control is based on the DryGair unit s temperature sensor It should be noted that due to the location and calibration of the temperature sensor there may be small differences in the readings when compared to the climate control system We recommend calculating the difference between the sensors DryGair temperature reading Cli...

Страница 91: ...16 Temperature valve controller Controlling the DryGair unit with a heating cooling configuration by a climate control system requires connecting a serial communication card IROPZSER30 to the temperature valve controller Note the serial communication card is not included in the unit Temperature Valve Controller ir33 DIN DN33 Serial Communication Card IROPZSER30 Figure 9 17 Temperature valve contro...

Страница 92: ...oller cover centerpiece 3 Break off the cover centerpiece 4 Connect the serial communication card to the temperature valve controller Figure 9 19 Communication card in the controller 5 Reassemble the Serial Card cover to the controller E 2 2 2 Connecting to the Serial Communication Card Connect the RS485 cable from the climate control system to the serial communication card green connector GND Cov...

Страница 93: ...seconds the display shows the number 0 2 Press the up arrow button until the password 77 is displayed 3 Press the Set button 4 The first modifiable parameter C0 will be displayed 5 Press the up arrow button until the parameter C32 is reached 6 Press the Set button The associated value is displayed In most cases it will be the default value 1 If required press the up down arrow keys to increase dec...

Страница 94: ...rs and their corresponding Modbus parameters for the climate control system Temperature units of measurement Definition of temperature unit of measurement Celsius or Fahrenheit reading and writing Set point 1 Temperature set point definition reading and writing Heating and Cooling modes reading and writing The preferred mode of operation It must be set to generate the proper temperature Probe 1 re...

Страница 95: ...DryGair Dehumidification Unit Appendices Ver 06 2020 87 E 2 2 5 List of Carel ir33 Parameters The following is a list of parameters from the CAREL ir33 User Manual ...

Страница 96: ...Appendices Climate Control System DryGair Energies Ltd 88 ...

Страница 97: ...DryGair Dehumidification Unit Appendices Ver 06 2020 89 ...

Страница 98: ...Appendices Climate Control System DryGair Energies Ltd 90 ...

Страница 99: ...erg AKFD 710 6 6 K 6H A4 Humidity Controller Carel IR33V9HR20 Temp Controller Carel PZD2S0P001 Humidity Sensor Carel KFTF20UNTC10K Filter Dryer Danfoss DML 165S High pressure switch with reset Danfoss KP5 Low pressure switch Danfoss KP1 Oil pressure switch Danfoss KP55 Motor protector ABB MS116 Phase failure device ENTES MKC 03 Timer TELE E1Z1 Relay 24V Phoenix Contact REL IR4 L 24VAC 4X21 Rotary ...

Страница 100: ...Comments and Notes DryGair Energies Ltd 92 10 COMMENTS AND NOTES The following pages are intentionally left blank and can be used for adding personal comments and notes related to the DryGair unit ...

Страница 101: ...DryGair Dehumidification Unit Comments and Notes Ver 06 2020 93 ...

Страница 102: ......

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