Related Manuals for Lennox ADNOVA THX 045
Summary of Contents for Lennox ADNOVA THX 045
- Page 1 INSTALLATION, OPERATING AND MAINTENANCE WALL MOUNTED PACKAGED INDOOR UNIT @DNOVA 4 - 15 kW ADNOVA-THX_R410A- IOM-1506-E www.lennoxemea.com...
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Page 3: Table Of Contents
General Description Structure Field of application Cooling circuit Installation warnings Inspection / Transport / Positioning Inspection on receipt Lifting and Transport Unpacking Positioning Installation Evacuation and Charging Operations Introduction Vacuum and charging machine Evacuating a circuit “contaminated” with refrigerant Charging positions (single point) Electrical Connections Generalities Machine Functional Schemes... -
Page 4: General Description
GENERAL DESCRIPTION THX/D “Lennox Wall-mounted Telecom units” are air conditioners for low- and medium-powered telephone exchanges. They are designed to be mounted on an outside wall of the shelter.THX air conditioners are direct expansion package units with an air-cooled condenser system. They are distinguished by an innovative air circulation system which significantly enhances performance in all operating conditions. -
Page 5: Cooling Circuit
Cooling circuit The entire cooling circuit is built in the Lennox factory using only components of the finest quality brands and processes conforming to the specifications of Directive 97/23 for brazing and testing. Compressors: only scroll-type compressors of leading international manufacturers are used in the THX units. -
Page 6: Installation Warnings
Fig. 1 Basic cooling circuit Compressor Condenser Thermostatic valve Evaporator Filter dryer Sight glass Low pressure switch High pressure switch Condensing pressure probe Installation warnings General rules • When installing or servicing the unit, you must strictly follow the rules provided in this manual, comply with the directions on the units themselves and take all such precautions as are necessary. -
Page 7: Inspection / Transport / Positioning
Delivery Slip before signing it.Lennox or its Agent must be promptly notified of the entity of the damage. The Customer must submit a written report describing every significant sign of damage. - Page 8 Fig. 2 Wall mounted unit THX0230-290 @DNOVA THX_R410A-IOM-1506-E...
- Page 9 @DNOVA THX_R410A-IOM-1506-E...
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Page 10: Installation
Installation The THX/D package air-conditioning unit is suitable for all environments except aggressive ones. Do not place any obstacles near the units and make sure that the air flow is not impeded by obstacles and/or situations causing back suction (see Fig.3). Fig. - Page 11 • Apply a vibration-damping rubber lining between the unit and wall • Position the unit on the wall, fitting the air outlet and intake flanges correctly into place; use M8 screws secured by suitable anchors to fasten the unit. • carefully seal the entire perimeter of the unit on the exterior wall of the shelter and the air intake and outlet flanges on the inside.
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Page 12: Evacuation And Charging Operations
Evacuation and Charging Operations This type of work must be carried out by qualified personnel only trained to do their job in accordance with current laws and regulations. Introduction The simultaneous presence of liquid and vapourmakes it necessary for both to be in a state of saturation (Gibbs law), as shown in Fig. -
Page 13: Evacuating A Circuit "Contaminated" With Refrigerant
repeated as described; this operation facilitates the removal of trapped and/or frozen humidity during the evacuation process Evacuating a circuit “contaminated” with refrigerant The first step is to remove the refrigerant from the circuit using a specific machine with a dry compressor for recovering the refrigerant. -
Page 14: Electrical Connections
Electrical Connections Generalities Before carrying out any job on electrical parts, make sure the power supply is disconnected. Check that the mains electricity supply is compatible with the specifications (voltage, number of phases, frequency) shown on the unit rating plate. The power connection for single---phase loads is to be made with a three---pole cable and “N”... -
Page 15: Machine Functional Schemes
Machine Functional Schemes Fig. 8 Machine functional schemes @DNOVA THX_R410A-IOM-1506-E... -
Page 16: Starting Up
Starting Up Preliminary checks • Check that the electrical connections have been made properly and that all the terminals are securely tightened. This check should also be included in a periodic six-month inspection. • Check that the voltage at the RST terminals is 400 V ± 5%and make sure the yellow indicator light of the phase sequence relay is on. - Page 17 Fig. 10 Electrical cables inlet holes Electrical power / UPS inlet • Connect the power supply and earth wire to the terminals of the main switch. • Put OFF switch “QF1” of the compressor so as to be sure it will not start running in the wrong direction in the case of a phase sequence error.
- Page 18 • Check the phase sequence relay on the control board to verify whether the phases occur in the correct sequence: if they do not, disconnect the unit from power supply and invert two phases of the incoming three-pole cable. Never attempt to modify internal electrical connections: any undue modifications will immediately invalidate the warranty.
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Page 19: Setting Operating Parameters
Setting Operating Parameters Generalities All the control devices are set and tested in the factory before the unit is dispatched. However, after the unit has been in service for a reasonable period of time you can perform a check on the operating and safety devices. -
Page 20: Maintenance
Maintenance The only operations to be performed by the user are to switch the unit On and Off. All other operations are to be considered maintenance work and must thus be carried out by qualified personnel trained to do their job in accordance with current laws and regulations. -
Page 21: General Inspection
General inspection Inspecting the air filter (THX) @DNOVA THX_R410A-IOM-1506-E... -
Page 22: Inspecting The Air Filter (Thxd)
Inspecting the air filter (THXD) @DNOVA THX_R410A-IOM-1506-E... - Page 23 Inspecting the damper/motor (THXD) @DNOVA THX_R410A-IOM-1506-E...
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Page 24: Inspecting The Damper/Motor (Thx)
Inspecting the damper/motor (THX) Fixing of cables @DNOVA THX_R410A-IOM-1506-E... -
Page 25: Inspection Of The Compressor Section
Inspection of the compressor section 9.10 Inspection the sight glass and the filter drier @DNOVA THX_R410A-IOM-1506-E... -
Page 26: Repairing The Cooling Circuit
9.11 Repairing the cooling circuit Warning: while performing repairs on the cooling circuit or maintenance work on the compressors, make sure the circuit is left open for as little time as possible. Even if briefly exposed to air, ester oils tend to absorb large amounts of humidity, which results in the formation of weak acids. -
Page 27: Recharging With Refrigerant R410A
Introduce refrigerant through the inlet in the liquid line. A unit that was originally charged with R410A in the factory must not be charged with other refrigerants without the written authorization of Lennox. 9.15 Environmental protection The law implementing the regulations (reg. EEC 2037/00) which govern the use of ozone---depleting... -
Page 28: Troubleshooting
Troubleshooting On the next pages you will find a list of the most common causes that may cause the package unit to fail or malfunction. These causes are broken down according to easily identifiable symptoms. You should be extremely careful when attempting to implement any of the possible remedies suggested: overconfidence can result in injuries, even serious ones, to inexpert individuals. -
Page 29: Dimensional Drawing
11 Dimensional drawing MOD. THX 0451 - 0561 - 0731 FRONT SIDE VIEW VIEW VIEW @DNOVA THX_R410A-IOM-1506-E... - Page 30 MOD. THX 0901 - 1051 FRONT VIEW SIDE VIEW TOP VIEW @DNOVA THX_R410A-IOM-1506-E...
- Page 31 MOD. THX 1201 - 1451 FRONT VIEW SIDE VIEW TOP VIEW @DNOVA THX_R410A-IOM-1506-E...
- Page 32 MOD. THX 0902 – 1102 - 1302 FRONT VIEW SIDE VIEW TOP VIEW MOD. THX 2302 - 2902 @DNOVA THX_R410A-IOM-1506-E...
- Page 33 @DNOVA THX_R410A-IOM-1506-E...
- Page 34 MOD. THXD 0451 – 0561 - 0731 FRONT VIEW SIDE VIEW TOP VIEW @DNOVA THX_R410A-IOM-1506-E...
- Page 35 MOD. THX 0901 – 1051 – 1201 - 1451 FRONT VIEW SIDE VIEW TOP VIEW @DNOVA THX_R410A-IOM-1506-E...
- Page 36 LENNOX DISTRIBUTION +33 4 72 23 20 20 +33 4 72 23 20 20 Due to LENNOX EMEA ongoing commitment to quality, the specifi cations, ratings and dimensions are subject to change without notice and without incurring liability. ADNOVA-THX_R410A- Improper installation, adjustment, alteration, service or maintenance can cause property damage or personal injury.