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DryGair DG12 Installation, Operation And Maintenance Manual

Dehumidification unit
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DryGair Dehumidification Unit
Installation, Operation and Maintenance
Manual (EU)
November 2017
Ver. 11/17

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  • Page 1 DryGair Dehumidification Unit Installation, Operation and Maintenance Manual (EU) November 2017 Ver. 11/17...
  • Page 2 : drygair.energies Proprietary and Confidential Copyright © 2017 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.

  • Page 3: Table Of Contents

    DryGair Dehumidification Unit Table of Contents TABLE OF CONTENTS INTRODUCTION ______________________________________ 1 SAFETY _____________________________________________ 3 UNIT OVERVIEW _____________________________________ 7 INSTALLATION ______________________________________ 10 UNIT PARTS AND COMPONENTS ______________________ 24 Ver. 11/17...
  • Page 4 Table of Contents UNIT OPERATION ___________________________________ 33 MAINTAINING THE UNIT ______________________________ 40 TROUBLESHOOTING AND REPAIRING THE UNIT _________ 43 APPENDICES _______________________________________ 45 10. COMMENTS AND NOTES _____________________________ 62 DryGair Energies Ltd.
  • Page 5 Figure 2-3. Hot Surface caution label ___________________________________________ 5 Figure 2-4. Lift from Here notice _______________________________________________ 5 Figure 2-5. DryGair Identification label __________________________________________ 6 Figure 3-1. DryGair unit (front view) ____________________________________________ 9 Figure 3-2. DryGair unit (rear view) ____________________________________________ 9 Figure 4-1. Transferring the unit ______________________________________________ 19 Figure 4-2.
  • Page 6 List of Tables LIST OF TABLES Table 4-1. Parts and Accessories ____________________________________________ 20 DryGair Energies Ltd.

  • Page 7: Introduction

    DryGair Dehumidification Unit Introduction INTRODUCTION This manual provides instructions for operating the DryGair unit in a correct and safe way, including installation instructions, maintenance procedures and unit troubleshooting. As DryGair continuously develops its machines to their maximum potential, this manual, though completely up to date when issued, is subject to changes without notice.
  • Page 8 Information given in a “caution” message refers to the safe operation of the unit and provides 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. DryGair Energies Ltd.

  • Page 9: Safety

    DryGair Dehumidification Unit Safety SAFETY DryGair Energies Ltd. believes that the safety of personnel working with and around the unit is the most important consideration. The DryGair unit is equipped with all the safety devices necessary to ensure risk-free use under standard conditions.
  • Page 10 • Secure electrical wires and cables to prevent damage. • The protecting doors and covers should not be opened during machine operation. • Replace all safety shields after completing set-up, troubleshooting and maintenance procedures. DryGair Energies Ltd.

  • Page 11: Figure 2-1. High Voltage Warning Label

    DryGair Dehumidification Unit Safety Unit Labels The following Warning, Certification and Identification labels are adhered to the DryGair unit: • Attention High Voltage Figure 2-1. High Voltage warning label • Hearing Protection Required Figure 2-2. Hearing Protection required label •...

  • Page 12: Figure 2-5. Drygair Identification Label

    Safety Unit Labels • Identification Label This identification label is located on the right panel and contains the following information: Figure 2-5. DryGair Identification label • Model The model number provides information on the specific unit • Ps max The maximum operating pressure •...

  • Page 13: Unit Overview

    DryGair Dehumidification Unit Unit Overview UNIT OVERVIEW The DryGair dehumidifying unit is designed and manufactured by DryGair Energies Ltd. The unit is designed for the dehumidification of greenhouses, and can also be used in any other closed structure. The unit reduces the humidity in the greenhouse according to a defined set-...
  • Page 14 Unit Overview Options Options The DryGair unit can include one or more of the following options: Side Canopy – a 1-direction air vent. • Combined Heating and Cooling – a water-based coil for heating or • cooling the air exiting the unit.

  • Page 15: Figure 3-1. Drygair Unit (Front View)

    DryGair Dehumidification Unit Unit Overview Unit Description The following figures show the various external parts of the DryGair unit. Note The front and rear view are of different models and configurations. 1. Air inlet to coils 2. Removable cover to the compressor 3.

  • Page 16: Installation

    Site Requirements 4.1.1 • The DryGair unit should be installed inside a greenhouse and located in an accessible location for operation and maintenance. The unit should preferably be located in the center of the greenhouse, blowing air towards the plants.
  • Page 17 DryGair Dehumidification Unit Installation Unit Specifications (EU) 4.1.2 The unit specifications are according to model type and option. Drawings with dimensions of the different models are attached in Appendix B. The units can be positioned on the ground – along the aisles, as part of •...
  • Page 18 Air Flow ~12,000 m³/h Refrigerant Type R507 Max. distance between unit upper and lower units: Note 4 meters. * Exact height can be specifically adjusted ** Depends on the crop ***Can be shorter- depends on the requirements DryGair Energies Ltd.
  • Page 19 DryGair Dehumidification Unit Installation 4.1.2.5 Standard Unit with Heating & Cooling Specification Value Depth 930 mm Dimensions Width 2,320 mm Weight ~825 kg 2,360 mm + ~500 mm Height* Air distribution module Hot water pipe connection 300 mm Coverage Area ** Up to 4,000 m 10°C –...
  • Page 20 3-phase, 24 Amp, 400 V, 50 Hz Electricity Consumption 6 kWh (@18°C and 80% RH) Air Flow ~12,000 m³/h Refrigerant Type R507 Max. distance between the unit upper and lower Note units: 4 meters. * Exact height can be specifically adjusted DryGair Energies Ltd.
  • Page 21 DryGair Dehumidification Unit Installation ** Depends on the crop ***Can be shorter- depends on the requirements 4.1.2.9 Warm Climate Unit Specification Value Depth 970 mm Dimensions Width 2,350 mm Weight ~790 kg 2,410 mm + ~500 mm Height* Air distribution module...
  • Page 22 Moving and lifting the unit to its position should be done with suitable belts/chains. Caution The DryGair unit should be lifted only from its front or rear. A “LIFT” notice is attached to the front and rear panels of the unit. Ensure the forks are spread sufficiently apart to ensure stability of the load.
  • Page 23 DryGair Dehumidification Unit Installation Special Instruction for Tilting the Unit 4.2.2 The unit can temporarily be carried in an angle inside the greenhouse under the following precautions: Caution Do not tilt the unit to more than 75 degrees from its vertical position.
  • Page 24 Do not break, do not open the packing with sharp tools and do not perforate the cover. When possible, the DryGair unit is shipped in a single packing, which includes all unit parts and spare parts. When it cannot be packed as a...

  • Page 25: Figure 4-1. Transferring The Unit

    DryGair Dehumidification Unit Installation Unpacking the Unit The DryGair unit should be transferred to its location in the greenhouse using a manual or driven forklift fitted to its weight, and placed on the prepared flat surface. Figure 4-1. Transferring the unit Unpacking 4.3.1...
  • Page 26 Installation Unpacking the Unit Parts List Received 4.3.2 The DryGair dehumidification unit is supplied with the following standard items and parts: Table 4-1. Parts and Accessories Part Description DryGair Part Number Main Unit Air Distribution Module (Canopy) Accessories: Rubber pads *...

  • Page 27: Positioning The Unit

    4. Level the unit and verify it is stable. 5. Connect the Air Distribution Module (Canopy). The Air Distribution Module type is ordered with the unit, as recommended by DryGair. The optional types are shown in Appendix B. Notes •...

  • Page 28: Figure 4-2. Water Drain Outlet

    Installation Connecting the Utilities After the unit is installed, call your electrician and the local DryGair technician to complete unit installation and to perform the first unit activation. Note If the unit is to be connected to a climate control system, have your IT expert on-site for the first power up.

  • Page 29: Figure 4-3. Electrical Switchboard And Grid Terminal Block

    DryGair Dehumidification Unit Installation Connecting the Unit to the Grid 4.5.2 Warning Only a certified electrician is authorized to connect the unit to the grid. Open the electrical compartment door, and identify the grid connection terminal Grnd Figure 4-3. Electrical switchboard and grid terminal block 2.

  • Page 30: Unit Parts And Components

    Unit Parts and Components Temperature and Humidity Sensor UNIT PARTS AND COMPONENTS The following figures show the various parts and components of the DryGair dehumidification unit. Temperature and Humidity Sensor The Temperature and Humidity sensor is connected at the air entrance to the unit.

  • Page 31: Figure 5-3. Defrost Temperature Sensor

    DryGair Dehumidification Unit Unit Parts and Components Defrost Temperature Sensor The defrost temperature sensor is positioned between the front heating coils and the air entrance fins. Only its connecting cable is visually seen. The defrost temperature sensor measures the temperature of the coil and its surrounding.

  • Page 32: Figure 5-4. Electrical Compartment

    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 electrical compartment, marked in the above Figure 5-4. DryGair Energies Ltd.
  • Page 33 DryGair Dehumidification Unit Unit Parts and Components Main power 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.
  • Page 34 Display the temperature and the humidity. Green/Red signal lights Provides indication on unit fault. Phase failure/sequence relay (NV relay) A relay that operates when the voltage is lost. Compressor circuit breaker (E3) Provides power to the compressor. DryGair Energies Ltd.

  • Page 35: Figure 5-5. Compressor (Front View)

    DryGair Dehumidification Unit Unit Parts and Components Compressor The compressor is located behind the removable front left cover. Compressor isolator lock Figure 5-5. Compressor (front view) The compressor is mounted on spring-type vibration eliminators, which are supplied by the compressor manufacturer.

  • Page 36: Figure 5-7. Oil Pressure Protector And Switches

    The heat exchange compartment is behind the right-side cover. 1. Filter driers (×2) Figure 5-8. Heat exchange compartment Note The Heat Exchange Compartment looks a bit different on units with the Heating and Cooling option (see Appendix D section D.2). DryGair Energies Ltd.

  • Page 37: Figure 5-9. Expansion Valve

    DryGair Dehumidification Unit Unit Parts and Components 1. Expansion valves (×2) Figure 5-9. Expansion valve 1. Sight glass (×2) Figure 5-10. Sight glass The sight glass has a center indicator. Its color provides indication to the refrigerant in the coils: •...

  • Page 38: Figure 5-11. Blowing Fans

    Unit Parts and Components Blowing Fans Blowing Fans There are two axial fans on the top of the unit. 1. Blowing fans (×2) Figure 5-11. Blowing fans These two fans circulate the air, passing through the dehumidification unit. DryGair Energies Ltd.

  • Page 39: Unit Operation

    DryGair Dehumidification Unit Unit Operation UNIT OPERATION The operation chapter explains how to use the DryGair unit. Note Operating the unit should be done only after receiving training from the representative of DryGair. Operation Precautions Before operating the unit, verify you are familiar with the following: •...
  • Page 40 1. Make sure the main switch is OFF and unauthorized personnel are not near the machine. 2. Confirm the DryGair unit is stable and leveled. 3. Confirm the air distribution module (canopy) is installed and secured. 4. Confirm the drainage pipe installed and routed away from the unit.
  • Page 41 DryGair Dehumidification Unit Unit Operation Powering On 6.2.2 Toggle the external circuit breaker to its ON position. Warning High voltage is present at points throughout the unit. Contact can result in injury or death. Before opening the unit electrical compartment, ensure you are familiar with the location of the external circuit breaker to the unit.

  • Page 42: Figure 6-1. Humidistat Controller

    6°C, the defrost cycle of that hour is not performed. Caution Do NOT change these values without consulting DryGair Ltd. For details on how to change and set the Humidity and Temperature values, see the documentation of the Controllers in the manufacturer's website.
  • Page 43 DryGair Dehumidification Unit Unit Operation Selecting the Operation Mode 6.2.5 The unit is turned on by a switch that has three operation modes. • Local mode (1): the unit operates according to the values set in the Temperature and Humidity controllers.

  • Page 44: Operating The Unit

    It is recommended that the first operation is performed by a qualified DryGair person or representative. Wait 2 hours after the machine is under voltage before operating. 2. Check to ensure the temperature and the humidity set points are set to the required values.
  • Page 45 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 is set to around 6°C (dest. Temp.). When the temperature is above this value the unit does not go into the defrost mode.

  • Page 46: Maintaining The Unit

    Perform the following monthly: • The daily maintenance. • Check to see if there are any oil stains/residues. If found, check to see the origin and contact your local DryGair representative. Warning Do not steam-clean the refrigeration coils. DryGair Energies Ltd.
  • Page 47 DryGair Dehumidification Unit Maintaining the Unit Notes for Cleaning 7.2.1 To avoid dust build-up, the unit can be covered by material with large ventilation holes, and should not be completely closed at its base. This is to avoid humidity due to insufficient ventilation. Condensation will cause rusting or corrosion of the metal parts and damage to the electrical apparatus.

  • Page 48: Annual Maintenance

    Annual Maintenance On a yearly basis perform the following: Note It is recommended the yearly inspection and maintenance is performed by a qualified DryGair person or representative, and having an HVAC person or electrician for assistance. • The quarterly maintenance.

  • Page 49: Troubleshooting And Repairing The Unit

    DryGair Dehumidification Unit Troubleshooting and Repairing the Unit TROUBLESHOOTING AND REPAIRING THE UNIT Troubleshooting The troubleshooting section provides malfunction symptoms, the possible cause, and what may be done to overcome. Symptom Possible Cause Remedy Check the power from the power...
  • Page 50 Troubleshooting and Repairing the Unit Repairing the Unit Repairing the Unit If any of the electrical components fails, contact the factory Service Center to obtain the proper replacement part. For further information, contact DryGair at: Email: info@drygair.com Website: www.drygair.com The Refrigerant Compressor 8.2.1...

  • Page 51: Appendices

    DryGair Dehumidification Unit Appendices APPENDICES Appendix A. Main Parts List Description Manufacturer Model Compressor Copeland 3DS5-150X-AWMD Axial Fan Rosenberg AKFD 710-6-6-K 6H A4 Humidity Controller Carel IR33V9HR20 Temp Controller Carel PZD2S0P001 Humidity Sensor Carel KFTF20UNTC10K Filter Dryer Danfoss DML 165F...

  • Page 52: Figure 9-1. Standard Unit

    Appendices Unit Drawings Appendix B. Unit Drawings B.1. Standard Unit Figure 9-1. Standard unit DryGair Energies Ltd.

  • Page 53: Figure 9-2. Small Unit

    DryGair Dehumidification Unit Appendices B.2. Small Unit Figure 9-2. Small unit Ver. 11/17...

  • Page 54: Figure 9-3. Standard Split Unit

    Appendices Unit Drawings B.3. Standard Split Unit Figure 9-3. Standard split unit DryGair Energies Ltd.

  • Page 55: Figure 9-4. Small Split Unit

    DryGair Dehumidification Unit Appendices B.4. Small Split Unit Figure 9-4. Small split unit Ver. 11/17...

  • Page 56: Figure 9-5. Standard Unit With Heating & Cooling

    Appendices Unit Drawings B.5. Standard Unit with Heating & Cooling Figure 9-5. Standard unit with heating & cooling DryGair Energies Ltd.

  • Page 57: Figure 9-6. Small Unit With Heating & Cooling

    DryGair Dehumidification Unit Appendices B.6. Small Unit with Heating & Cooling Figure 9-6. Small unit with heating & cooling Ver. 11/17...

  • Page 58: Figure 9-7. Standard Split Unit With Heating & Cooling

    Appendices Unit Drawings B.7. Standard Split Unit with Heating & Cooling Figure 9-7. Standard split unit with heating & cooling DryGair Energies Ltd.

  • Page 59: Figure 9-8. Small Split Unit With Heating & Cooling

    DryGair Dehumidification Unit Appendices B.8. Small Split Unit with Heating & Cooling Figure 9-8. Small split unit with heating & cooling Ver. 11/17...

  • Page 60: Figure 9-9. Warm Climate Unit

    Appendices Unit Drawings B.9. Warm Climate Unit Figure 9-9. Warm climate unit DryGair Energies Ltd.

  • Page 61: Figure 9-10. Four-Direction Canopy

    The four-direction canopy option distributes the air coming from the 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 9-10. Four-direction canopy The 4-way canopy is not symmetric.

  • Page 62: Figure 9-11. Air Distributor Module (4-Way Canopy)

    Appendices Air Distribution Modules (Canopy) Moderate slope Figure 9-11. Air distributor module (4-way canopy) DryGair Energies Ltd.

  • Page 63: Figure 9-12. One-Direction Canopy

    The one-direction canopy option distributes the air coming from the unit to one direction. This type of canopy is efficient when the DryGair unit is positioned at the sides of the greenhouse, near the greenhouse walls. Figure 9-12. One-direction canopy...

  • Page 64: Figure 9-13. Air Distribution Panel

    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 9-13. Air distribution panel...

  • Page 65: Figure 9-14. Split Unit

    DryGair Dehumidification Unit Appendices Appendix D. Unit Types and Configurations D.1. Split Units For locations where the unit cannot be placed on the floor, due to operative or location requirements, the upper and lower sections of the unit can be separated.
  • Page 66 3. Confirm compressor operation (should start working only after 5 minutes from operation). 4. Wait 30 minutes from operation and confirm that the coils are fully wet. 5. Adjust the expansion valves and pressure switches for optimal operation. DryGair Energies Ltd.

  • Page 67: Figure 9-16. Air Heating Option

    DryGair Dehumidification Unit Appendices D.2. Air Heating/Cooling The air heating/cooling option is most often used in cold or hot areas, where additional warming/cooling of the air is required. Warming/cooling the air is performed by adding a heat exchange element at the air exit path, replacing a heating/cooling unit.

  • Page 68: Comments And Notes

    Comments and Notes Unit Types and Configurations 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. DryGair Energies Ltd.
  • Page 69 DryGair Dehumidification Unit Comments and Notes Ver. 11/17...

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