Related Manuals for Trane Flex II Series
Summary of Contents for Trane Flex II Series
- Page 1 Installation Operation Maintenance Flex II Air-cooled chillers with fixed speed scroll compressors CG-SVX047A-GB Original instructions...
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Page 2: Table Of Contents
Table of contents 1 OVERVIEW ..................3 2 SAFETY REGULATIONS ..............3 3 OPERATING LIMITS ................. 7 4 INSTALLATION ................8 5 ACOUSTIC PROTECTION ..............11 6 ELECTRICAL POWER SUPPLY ............11 7 WATER CONNECTIONS ..............12 8 ELECTRICAL PANEL ................ 24 9 OPERATOR RESPONSABILITIES ............ -
Page 3: Overview
Photographic evidence must be provided for macroscopic damage. The card must be sent to Trane within 8 days of receiving the goods: if it is not sent back or delayed, the complaint will not be accepted. - Page 4 3 meters. Trane declines any responsibility for damage to things and unauthorized personnel in case of absence of clear and static limiting systems of the risk areas and of the relevant warning and danger signs.
- Page 5 2.5 PRECAUTIONS AGAINST RESIDUAL RISKS Prevention from risks due to the command system make sure the instructions for use have been understood before carrying out any work on the control panel. • always keep the instruction manual close at hand when working on the control panel. •...
- Page 6 Trane or from official dealers of the companies reported in the • list of recommended spare parts. if the unit is to be moved after a year of being in the site or if it has to be dismantled contact Trane. • 2.10 MANUAL ALARM RESET If there is an alarm the unit must not be manually reset before having located and eliminated the cause of the fault.
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Page 7: Operating Limits
OPERATING LIMITS 3.1 STORAGE The units can be stored within the following environmental conditions: Min ambient temperature -10°C Max ambient temperature 53°C Max relative humidity 95% not condensable CAUTION: Storage in very high humidity (condensation) can damage electronic components. 3.2 OPERATING LIMITS FLEX II unit operation is permitted within the limits indicated in the diagram provided in 3.3. -
Page 8: Installation
With heat recovery heat exchanger Leaving chilled water temperature °C ETHYLENE GLYCOL CORRECTION TABLE % Ethylene glycol weight Freezing temperature °C -3,9 -6,5 -8,9 -11,8 -15,6 -23,4 °C Suggested security limit Cooling 0,995 0,99 0,985 0,981 0,977 0,974 0,971 0,968 capacity coefficient 0,997 0,993... - Page 9 Figure 1 – Lifting procedure CAUTION Do not use forklift trucks to lift the unit from below. If equipment for lifting from above is not available, using rollers may move the unit. The surface on which the unit is placed must be flat and strong enough to withstand the weight of the unit while running.
- Page 10 CAUTION: in case two stand-alone units have to be installed side by side, the distance of respect must be doubled. **: As far as modular units are concerned no side space is required between any of the units and the adjacent one.
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Page 11: Acoustic Protection
ACOUSTIC PROTECTION When the sound level must be checked in particular, it is necessary to pay maximum WARNING in isolation from the base of the unit properly applying the anti-vibration mounts (provided optionally). Also, install flexible joints on water connections. ELECTRICAL POWER SUPPLY The mains power supply characteristics have to match the unit’s absorption. -
Page 12: Water Connections
0.5 mm in diameter. Trane cannot be held responsible for any damage to heat exchangers due to the lack of good quality water filters. ** If the unit is a modular one, the water filter and the flow switch are on board the unit so the installation of water filter and flow switch in the customer plant is not needed. - Page 13 ∆Tmax chiller = 8 °C dpw = K·Q² / 1000 Q = 0,86 P/∆T Important: If pumps driven by inverters (either unit onboard pump or external pump) in every working condition, the variation of the water flow rate must be as low as possible and less than 10% of the nominal flow rate per minute. 7.2 WATER CIRCUIT REGULATION EQUIPMENT Centrifugal motor pump block Assures the discharge and the prevalence necessary to supply tube nest evaporator, the tank and the utility.
- Page 14 The most appropriate water treatment must be determined locally, according to the type of system and to the local characteristics of the process water. Trane is not responsible for damage to or malfunctioning of equipment caused by failure to treat water or by improperly treated water...
- Page 15 3. Additional heat insulation and sufficient heating of exposed piping. IMPORTANT: Trane can provide various optional kits (they are not included in the Low ambient kit don to -10°C) for the protection of all the components of the hydraulic circuit inside the unit (pumps, pipes and tank).
- Page 16 8.7.1 Hydraulic diagram for stand-alone units with single pump 8.7.2 Hydraulic diagram for stand-alone units with single pump and tank...
- Page 17 8.7.3 Hydraulic diagram for stand-alone units with single pump + stand-by pump 8.7.4 Hydraulic diagram for stand-alone units with single pump + stand-by pump and tank...
- Page 18 8.7.5 Hydraulic diagram for modular units with no on board unit pump 8.7.6 Hydraulic diagram for modular units with single pump...
- Page 19 8.7.7 Hydraulic diagram for modular units with single pump + stand by pump...
- Page 20 CUSTOMER PLANT SKETCHES 8.8.1 Customer plant sketch with primary pump for a stand-alone unit with no on board pump IMPORTANT: the flow switch and the water strainer in the customer plant are obligatory in order to keep the warranty...
- Page 21 8.8.2 Customer plant sketch without primary pump for a stand-alone unit with on board single pump or single pump+ stand-by pump IMPORTANT: the flow switch and the water strainer in the customer plant are obligatory in order to keep the warranty 8.8.3 Customer plant sketch with primary pump for modular units with no on board pump...
- Page 22 8.8.4 Customer plant sketch without primary pump for modular units with on board single pump or single pump + stand by pump...
- Page 23 8.8.5 Flow switch installation To ensure adequate water flow through the evaporator, it is essential to install a flow switch on the water circuit. The flow switch must be installed on the inlet pipe of the water on which the pump is. The purpose of the flow switch is to stop the unit in case of an interruption of the water flow while protecting the evaporator from freezing.
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Page 24: Electrical Panel
Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharges capacitors. Verify with an appropriate voltmeter that all capacitors have discharged. -
Page 25: Operator Responsabilities
11.2 REFRIGERANT SEALS CONTROL Trane units are sent with the complete charge of refrigerant and are at a sufficient pressure to check the seal after installing. If the system were not under pressure, blow refrigerants (vapour) into it until pressure is reached and look for leakage. -
Page 26: Check List - Mandatory Operation Control Before Start-Up
OR THE ELECTRICAL PANEL OR CHANGES TO THE UNIT OPERATING PARAMETERS) MADE BY A THIRD PERSON WITHOUT A WRITTEN AUTHORIZATION ISSUED BY TRANE. THE UNIT SHALL BE CONFORM TO TRANE WIRING DIAGRAMS AND TECHNICAL DOCUMENTATION) IN CASE OF RELEVANT DIFFERENCE BETWEEN THE UNIT AND TRANE STANDARD CONFIGURATION PLEASE CONTACT TRANE. - Page 27 ELECTRONIC DEVICES ARE INTACT AND DON’T DISPLAY ANY DAMAGE. AN EXTERNAL WATER PUMP IS ELECTRICALLY CONNECTED TO THE ELECTRICAL PANEL IN ACCORDANCE WITH THE WIRING DIAGRAMS PROVIDED BY TRANE THE ELECTRICAL ABSORPTION AND THE WATER PUMPS OVERHEATING ARE STANDARD. REFRIGERANT CIRCUIT COMPLIANCE ALL CONNECTIONS ON THE REFRIGERANT CIRCUITS ARE WELL TIGHTENED.
- Page 28 CORRECT DELTA T IS ASSURED AND THE HYDRAULIC PRESSURE IS CONFORM TO THE PLANT AND TO THE WATER PRESSURE DROPS. FOR FURTHER TECHICAL INFORMATIONS PLEASE REFER TO TRANE DOCUMENTATIONS AND PROCEDURE FOR THE FIRST START UP. HYDRAULIC CONNECTIONS TO THE UNIT ARE COMPLIANT WITH THE UNIT NAME PLATE AND DIMENSIONAL DRAWINGS (HOT WATER INLET, HOT WATER OUTLET, COLD WATER INLET, COLD WATER OUTLET, EXT.).
- Page 29 ALL WATER PIPES ARE GROUND CONNECTED (IN ORDER TO AVOID ABNORMAL VOLTAGES THAT CAN CAUSE DANGEROUS CORROSIONS). THE EVAPORATOR WATER FLOW IS COMPLIANT TO THE TECHNICAL DOCUMENTATION PROVIDED BY TRANE. THE WATER PUMPS ARE CORRECTLY SET UP IN ACCORDANCE WITH THE PLANT WATER FLOW, AVAILABLE HEAD PRESSURE AND PRESSURE DROP.
- Page 30 12.1 REFRIGERANT CHARGE 12.1.1 Refrigerant replacement procedure with unit stopped and in vacuum (refrigerant charge in the liquid phase) Open the shut off valve as far as possible so that it closes the service coupling. Connect the refrigerant cylinder to the service coupling without tightening the coupling.
- Page 31 12.1.2 Refrigerant replacement procedure with unit running (refrigerant charge in the vapour phase) Caution: charge vapour only. Do not charge liquid because it may damage the compressor. Connect the refrigerant cylinder to the service valve without tightening the coupling. Drain the connection piping and tighten the coupling.
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Page 32: Start-Up
START-UP 13.1 PRELIMINARY CONTROLS Before starting up the equipment it is very important to check that all the operations described in the paragraph “CHECK LIST – MANDATORY OPERATION CONTROL BEFORE START UP” have been carried out correctly. Moreover check that all the mechanical and electric equipment has been tightened perfectly. Particular attention should be paid to the main components (compressor, exchangers, ventilators, electrical motors, and pump) if loose fastenings are found tighten them well before starting up the machine. - Page 33 13.4 CONTROL OF THE OIL CHARGE All the compressors mounted on Trane units are factory charged with oil whose chemical characteristic of stability are very good, so it is not necessary to change frequently the lubricant oil. The scroll compressors are equipped with an oil sight glass from which you can control the level. In tandem or trio performances, pay particular attention to oil level.
- Page 34 In case of burns for the electrical motor or fault of the compressor, it is necessary to make a test to check the acidity of the lubricant oil and, eventually, clean the circuit to reduce the acidity to correct values, mounting for instance an antiacid filter and changing the oil in the circuit.
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Page 35: Maintenance
Maintenance operations are fundamental in order to keep the units running properly, both purely functional and energetically points of view. Every Trane unit comes with a logbook, in which the user or the person delegated to machine maintenance can keep all the required notes, in order to keep a historical log of the Trane unit. - Page 36 IMPORTANT In case a temperature control based on ingoing water temperature is needed please contact Trane before carrying out any trying to set it autonomously. Ingoing water temperature sensor –This sensor is located on the evaporator ingoing water connection and is used for monitoring the return water temperature.
- Page 37 “dirty” or corrosive environment. Cleaning with cleansers or detergents is strongly discouraged due to the all-aluminum construction; straight water should prove sufficient, if not please contact Trane. Any breach in the tubes can result in refrigerant leaks IMPORTANT: Only in extreme cases should any type of chemical cleaner or detergent be used on microchannel coils.
- Page 38 14.5 ORDINARY MAINTENANCE Activities list week Month (1) Year (2) General: Data collection operation (3) Visually inspect the unit for any damage and / or looseness Verifying the integrity of the thermal insulation Clean and paint where needed Water Analysis (6) Electric: Check the correct operation of the equipment on the unit Check the wear of contactors - Replace if necessary...
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Page 39: Recommended Spare Parts
15 RECOMMENDED SPARE PARTS There follows a list of the recommended parts for several years’ running. Trane is at your disposal to recommend a personalised list of accessories according to the commissioned order, including the part number of the equipment. -
Page 40: Troubleshooting
16 TROUBLESHOOTING Who can take corrective action Coolin Symptom U = User Probable cause Possible remedy S = specialised personnel Probe faulty service Check and replace if necessary. A The unit does Lack of consent of the high or See points D-E not start low pressure Defective compressor... - Page 41 Who can take corrective action Symptom Cooling U = User Probable cause Possible remedy S = specialised personnel Pressure switch out of order Check and replace. Machine completely void of See point G. refrigerant Finned coil clogged, airflow rate Remove dirt from the coil. is too low Water circulation pump blocked Unlock the pump...
- Page 42 Who can take corrective action Symptom Cooling U = User Probable cause Possible remedy S = specialised personnel Expansion device that is not Verify and replace. working properly Water circulation pump blocked Unlock the pump. M Frost in the Check the pump and replace if compressor Water circulation pump defective necessary.
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Page 43: Improper Uses
IMPROPER USES The unit is projected and built up to grant the maximum safety in its proximity, as well as to resist to the aggressive environmental conditions. The fans are protected by grilles. Residual risks are indicated with warning labels. SAFETY SYMBOLS DANGER: DANGER:... - Page 44 For more information, visit www.Trane.eu. Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice. © 2018 Trane All rights reserved CG-SVX047A-GB December 2018...
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