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Summary of Contents for Lennox DHF CS
- Page 1 User manUal DHF CS/CF AIR CONDITIONING UNITS FOR CLOSE CONTROL APPLICATION TRANSLATION OF THE ORIGINAL INSTRUCTIONS HF61GC0303J / 05_23...
- Page 2 Dear Customer, Thanking you for choosing our products, we are pleased to provide you this manual for the correct use of equipment. Please read carefully the recommendations mentioned in the following pages and instruct your techni- cians and dedicated personnel who will deal with the management and maintenance of the unit. Our company will remain at your complete disposal for any questions e/o clarification you should need during the commissioning phases or its life cycle.
- Page 3 Each unit has an identification plate that is located on its frame and inside the electrical control panel, which shows all the data necessary for the installation, main- tenance and traceability of the machine. THE LABEL SHOWS THE FOLLOWING DATA: Modello - Model Ū...
- Page 4 GENERAL CAUTIONARY NOTES ATTENTION The operating rules contained in this manual are an integral part • The installer must provide adequate documentation that must of the unit supply and are valid exclusively for the units covered by comply with en 378-3 if applicable in the country of installation; this manual.
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Page 5: Table Of Contents
| USER mANUAL DHF CS/CF TABLE OF CONTENTS FEED WATER ....... p. 23 SERIES �... -
Page 6: Series
Ū all models belonging to the DHF Cs/CF series are de- Ū safety instructions are particularly important, as well as signed and built for indoor installation: general information contained in this manual. -
Page 7: Cooling Circuit
DHF Cs/CF units it is possible to solve them. tons situated on the electric control board: The shape of the units is characterized with the curved edg- Ū... - Page 8 | HF61GC0303J DHF CS/CF 1.2.2.1 Cooling circuits » Basic refrigeration circuit Standard version Op�onal version 3-way valve 2-way valve Chilled water inlet Heat exchanger Chilled water outlet Safety valve 3 Way valve 2-way valve (optional) » Basic cooling circuit with double feeding (option) Standard version Op�onal version...
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Page 9: Models And Versions
| USER mANUAL DHF CS/CF For different models and configurations see the cooling cir- cuit attached to the unit. 1.3 Models and versions The naming methods and the unit configuration options are shown below. 1 - Unit name Perimeter closet... -
Page 10: Main Components
| HF61GC0303J DHF CS/CF 1.3.1 Main components » DHF_ CS unit components (free fan unit) Chilled water coil EC Fans Condensate drain pan Electric control board Chilled water valve Air filter Fans module H = 550 mm Adjustable supports ±250 mm »... -
Page 11: Operating Diagrams
| USER mANUAL DHF CS/CF 1.3.2 Operating Diagrams » Operating Diagrams: Underfloor fans module with front air delivery » Operating Diagrams: Underfloor fans module with front and lateral air delivery WARNING The configurations shown as examples are just some of the... -
Page 12: Safety Prescriptions
| HF61GC0303J DHF CS/CF SAFETY PRESCRIPTIONS The following are some general rules useful for ensuring the 2.1.3 Use safety equipment safety of people who are in contact with the unit. A first aid kit and a fire extinguisher must be placed near the unit. -
Page 13: Safety Information
| USER mANUAL DHF CS/CF actual work, it would be too late: any not recommended Ū Operators should avoid operating the device from unsafe, or wrong operation could then cause serious damage to uncomfortable positions that may affect their balance. - Page 14 | HF61GC0303J DHF CS/CF » Residual risk areas Danger of fire Danger of cutting injuries near finned exchangers Impact and abrasion hazard in fan area Danger of burns due to the presence of high temperature pipes WARNING In order to avoid the risks listed above it is essentially im- portant to: Ū...
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Page 15: Description Of The Safety Symbols
| USER mANUAL DHF CS/CF 2.3 Description of the safety symbols » Safety symbols A. Warning: danger due to poor familiarity with all the functions of the unit and the resulting risks. B. read the use and maintenance manual carefully before operating the unit. -
Page 16: Maintenance Precautions
| HF61GC0303J DHF CS/CF 2.4 Maintenance precautions 2.4.6 Care and maintenance The cause of damages and accidents is often attributable to wrong maintenance, such as: Ū no water in the circuit; 2.4.1 Tools Ū incorrect percentage of anti-freezing agent in the hydrau- lic circuit;... -
Page 17: Inspection / Transport / Positioning
| USER mANUAL DHF CS/CF INSPECTION / TRANSPORT / POSITIONING 3.5 Siting The following are recommended and necessary indications to correctly carry out transporting, handling and positioning of the unit. To this end, information is also provided regard- ing the distribution of weights, anti-vibration devices to be Check the following points to select the best installation set- used and clearance space around the unit. -
Page 18: Installation Clearance Requirements
/ or situations that generate recirculation. requirements The DHF Cs/CF conditioner is suitable for any environment as long as it is not aggressive. avoid placing obstacles near » Service area... -
Page 19: Plumbing And Electrical Connections
| USER mANUAL DHF CS/CF PLUMBING AND ELECTRICAL CONNECTIONS 4.1 Hydraulic connections 4.2 Electrical connections 4.1.1 Properties of the feed water 4.2.1 Main features The quality and chemical composition of the cooling and ATTENTION heat transfer substance has a great influence on the life of... - Page 20 | HF61GC0303J DHF CS/CF ATTENTION even after disconnecting the mains voltage, life-threating charges can appear between the protective ground “Pe” and the mains connection. The protective earth is conducting high discharge currents (dependent on the switching fre- quency, current source voltage and motor capacity). earth-...
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Page 21: Start-Up
5.3 Thermal carrying fluid instructions”, supplied with the unit. WARNING The units belonging to the DHF Cs/CF series can operate It is mandatory to install a metal mesh filter on the inlet with mixtures of water and up to 50% ethylene glycol. -
Page 22: Group Stop
| HF61GC0303J DHF CS/CF 5.6 Group stop The group is stopped by pressing the “OFF” key on the front panel or by acting on the main disconnector, or by acting on the special controls of the lCD user interface. ATTENTION... -
Page 23: Humidifier
| USER mANUAL DHF CS/CF HUMIDIFIER L’installazione di un umidificatore richiede l’allacciamento al- le tubazioni d’alimentazione e di drenaggio dell’acqua. Shut-Off valve Filter Siphon Water supply Water drainage min 5° To simplify installation, it is recommended to use flexible Ū minimum slope of the drainage pipe greater than or pipes with an internal diameter of 6 mm and an external di- equal to 5°;... -
Page 24: Drain Water
| HF61GC0303J DHF CS/CF » Limit values for medium-high conductivity feed water of a humidifier with immersed electrodes. Symbol Unit Hydrogen ion activity Specific conductivity at 20°C σ μS/cm R, 20°C Total dissolved solids mg/l Fixed residue at 180°C mg/l... -
Page 25: Control And Safety Devices
| USER mANUAL DHF CS/CF CONTROL AND SAFETY DEVICES all control equipment is calibrated and tested at the facto- » ry before shipping the machine. However, after the unit has been operating for a reasonable period of time, it is advisa- ble to check the operating and safety devices. -
Page 26: Maintenance
| HF61GC0303J DHF CS/CF MAINTENANCE ATTENTION The only operations to be performed by the user are to switch the unit on and off. all other operations are maintenance tasks and must be per- formed exclusively by qualified personnel who are able to operate according to the laws and regulations in force. -
Page 27: Main Features
| USER mANUAL DHF CS/CF 8.2 Main features checks as described below. The indications below are relat- ed to standard tear and wear. To guarantee a constantly satisfactory performance over time, it is advisable to carry out routine maintenance and... - Page 28 | HF61GC0303J DHF CS/CF ACTION MAINTENANCE FREQUENCY 1 month 3 months 6 months 1 year Check the cooling water circuit, check for dam- age, leaks and ensure correct fixing. Check the correct flow of water and clean the water filter.
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Page 29: Air Filters Inspection
| USER mANUAL DHF CS/CF 8.3 Air filters inspection » DHF_CS Air filters inspection Open the front panel to access the filter section Remove the upper filters, check their condition and replace them if Locate the air filters and remove the two support brackets... -
Page 30: Safety Valve
| HF61GC0303J DHF CS/CF 8.4 Safety valve » DHF_CS Relief valve The relief valves are accessible in the units from front of the machines. » DHF_CF Relief valve The relief valves are accessible in the units from front of the machines. -
Page 31: Fans Inspection
| USER mANUAL DHF CS/CF 8.5 Fans inspection » Fans inspection Locate the lower front grate Open the doors of the unit and remove the buffers placed between Remove the grate the fans and batteries Remove the two horizontal supports of the fans... -
Page 32: Set The Right Fan Speed
| HF61GC0303J DHF CS/CF 8.6 Set the right fan speed The adopted fans are of the backward curved blades type in combination with a 4 poles e-motor. This kind of fan has very high performances so that it’s speed has to be reduced in order to match to the nominal air flow with the real external pressure drops. -
Page 33: Troubleshooting
| USER mANUAL DHF CS/CF TROUBLESHOOTING For troubleshooting purposes, please refer to the list and WARNING to the complete description of the alarms related to the in- You should be extremely careful when attempting to imple- stalled software version. ment any of the possible remedies suggested: overconfi-... -
Page 34: Retiring The Unit
| HF61GC0303J DHF CS/CF RETIRING THE UNIT When the unit has reached the end of its expected working read the instructions carefully before using the equipment life and therefore needs to be removed and replaced, a num- for the first time. It is strongly recommended not to use the... - Page 36 LGL FRANCE 6 Rue des Albatros – ZI Les Meurières – BP71 69780 Mions – FRANCIA T. +33 (0) 472 232 020...
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