Related Manuals for Trane CXAO
Summary of Contents for Trane CXAO
- Page 1 Installation Operation Maintenance CXAO Air to water reversible scroll heat pumps RTXB Air to water reversible screw heat pumps RF-SVX003A-GB Original instructions...
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Page 2: Table Of Contents
5. Pre-startup checks ..................36 General ......................... 36 Electrical supply ....................37 Start-up preliminary procedures ................ 38 Check list – mandatory operation control before start up ....... 39 Refrigerant replacement procedure ..............44 Refrigerant loading ..................... 48 RF-SVX003A-GB © 2015 Trane... - Page 3 6. Start up ..................... 49 Preliminary checks ....................49 Start up ......................... 49 Start up of the plant per unit ................49 Start up procedure ....................50 System maintenance ................51 General ......................... 51 Maintenance ....................... 51 Sight check of the under pressure vessels state ..........52 Standard Control ....................
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Page 4: General Information
These instructions are given as a guide to good practice in the installation, start-up, operation, and maintenance by the user, of a Trane RTXB or CXAO heat pump chiller. A separate manual is available for the use and maintenance of the unit’s controller. -
Page 5: Unit Reception
Trane. All components described in the delivery note must be Trane has compiled the content to the best of their carefully verifi ed and checked; any damage must be knowledge. No express or implied warranty is given for reported to the transporter. -
Page 6: Warranty
Trane and those coming from current practice), if the “1st start up form” has been fi lled in and sent to the Trane after sales department. D. The warranty is subject to any faults or defects being reported within eight days from their discovery. -
Page 7: Mechanical Installation
Responsibility WARNING! The installation of the unit must be avoided in any place Trane declines all present and future responsibility for that can be considered dangerous during maintenance, any damage to persons, animals or things caused by such as (but not only) covers without parapets or negligence of operators failing to follow the installation railings or without proper clearances. -
Page 8: Operating Limits
Operating limits Operating limits 2.5.1 Storage 2.5.2 Operation The units can be stored within the following Operation of the units is permitted within the limits environmental conditions: indicated in the product catalog. These operating limits apply to unit operating at full load. Min ambient Temperature -10°C WARNING! Operation outside the limits specifi... -
Page 9: Positioning
It is fundamental to respect minimum distances on all and/or attics, it could be necessary to use weight Trane units, in order to ensure optimum ventilation for distribution beams. the condenser coils. Limited installation space could For installation on the ground, a strong cement base that reduce the normal air fl... - Page 10 Minimum space requirements ◄ ► 3000 ◄ ► In any case, the microprocessor will allow the unit to adapt to the new condition producing the maximum available capacity (which would, however, lower than the nominal capacity of the unit) even with a lateral distance less than the recommended.
- Page 11 Minimum space requirements Anti-vibration Secure the bottom part of the anti-vibration to the foundation which will support it. Fix the anti-vibration bolts. Screw nut and lock nut to adjust the proper leveling of the unit. The units positioned incorrectly can cause damage to the compressor to incorrect leveling of the oil.
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Page 12: Installation
Installation Installation • The foundation must be able to support the weight of the unit; Installation side selection • Safety distances between the unit and other Before installing the unit, agree with the customer the equipment or structures to ensure that the air in location where it will be placed, taking into account the and out from the fans is free to circulate. - Page 13 Installation WARNING! Do not use forklift trucks to lift the unit from below. If equipment for lifting from above is not available, use rollers to move the unit. The surface on which the unit is placed must be fl at and strong enough to withstand the weight of the unit while running.
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Page 14: Safety Regulations
All Trane units are designed, built and inspected in range of action of the discharge fl ow of 3 meters. Trane compliance with the European Community Directives n° declines any responsibility for damage to things and... - Page 15 General precautions Precautions against risks due to the refrigerant Safety data Toxicity Not important Splashes or sprinkles can cause frostbite. The risk of absorptions through the skin is not relevant.. Those refrigerants could take some lightly irritating effects and in liquid stage they have a strong skinning effect.
- Page 16 General precautions Precautions against residual risks Prevention from risks due to the command system • To protect from safety devices exhausting it is not allowed to remove the protections while the unit is in • Make sure the instructions for use have been operation and to approach the unit without wearing understood before carrying out any work on the the right protections.
- Page 17 • If the unit is to be moved after a year of being in the site or if it has to be dismantled, contact Trane. inch W/mt 1/4”...
- Page 18 General precautions • Electrically unconnected unit: in this case the frost resistances of the unit could not warranty the protection. So it is absolutely necessary unload the unit content for A.C.S., instead for air conditioning it is necessary to add the correct glycol quantity indicated in the chapter: “Ethylene glycol correction table”...
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Page 19: Water Piping
Water piping 2.12 Water piping 7. Another fi lter must be installed on the pipe conveying ingoing water to the unit, near the evaporator and heat Piping must be designed with the lowest number of recovery (if installed). The fi lter avoids solid particles curves and the lowest number of vertical changes of entering the heat exchanger, as they could damage it direction. -
Page 20: Water Treatment
fi ltration of particles until 1,2 mm. the mechanical fi lter. Trane is not responsible for damage to or malfunctioning of equipment caused by failure to treat water or by improperly treated water. -
Page 21: Flow Switch Installation
Flow switch installation 2.15 Flow switch installation A fl ow meter specially selected for this purpose, is offered optionally. This fl ow switch, the blade type, is To ensure adequate water fl ow through the evaporator, suitable for applications in harsh environments and it is essential to install a fl... - Page 22 Flow switch installation Electrical connection Connect to the contact to the white and red of the microswitch (fi g. 1). The red-white contact opens when the fl ow drops below the set value. In the absence of fl ow the contact red-blue closes and can be used as a contact signal or alarm.
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Page 23: Hydraulic Data
Hydraulic data 2.16 Hydraulic data Hydronic accessories on request • “Y” water strainer (sold separately), consists of Water fl ow and pressure drop body and stainless steel mesh, with replaceable The units of AIR-WATER family have to work with the fi... - Page 24 Hydraulic data Scroll Compressor LOW HEAD PRESSURE PUMP (150 kPa) pump 1 pump 2 pump 6 Hp [kPa] pump 10 pump 12 pump 14 pump 15 Q [m 3 /h] MEDIUM HEAD PRESSURE PUMP (250 kPa) pump 2 pump 3 pump 4 pump 7 H [kPa]...
- Page 25 Hydraulic data HIGH HEAD PRESSURE PUMP (450 kPa) pump 5 H [kPa] pump 9 pump 17 Q [m 3 /h] Screw compressor LOW HEAD PRESSURE PUMP (150 kPa) pump 1 pump 4 Hp [kPa] pump 5 pump 9 pump 10 pump 14 Q [m 3 /h] RF-SVX003A-GB...
- Page 26 Hydraulic data MEDIUM HEAD PRESSURE PUMP (250 kPa) pump 2 Hp [kPa] pump 5 Hp [kPa] pump 6 pump 9 pump 11 pump 14 Q [m 3 /h] Q [m 3 /h] HIGH HEAD PRESSURE PUMP (450 kPa) pump 3 pump 7 Hp [kPa] pump 8...
- Page 27 Hydraulic data Connection scheme – Standard version Hydronic kit with 1 pump - B1/M1/A1 versions Gauges Water discharge Water discharge Safety valve Relief valve Expansion vessel Water differential pressure switch Empty plant secutiry pressure switch Shut off valve Evaporator Hydronic kit with 2 pumps - B2/M2/A2 versions Gauges Water discharge Water discharge...
- Page 28 Hydraulic data Hydronic kit with 1 pump and tank - SB/SM/SA versions Gauges Empty plant security pressure switch Water discharge Shut off valve Pump Evaporator Safety valve Additional pump water pressure switch Relief valve Water tank Expansion vessel Automatic water fi lling Water differential pressure switch Hydronic kit with 2 pumps and tank - XB/XM/XA versions Gauges...
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Page 29: Refrigerant Circuit Safety Valves
Refrigerant circuit safety valves 2.17 Refrigerant circuit safety valves 2.18 Heat exchanger pressure drop Each system comes with safety valves that are installed It is possible to use units with different fl ow rates from on each circuit, both on the evaporator and on the the nominal ones and consequently with different condenser. -
Page 30: Electrical Installation
Electrical installation Fouling factor correction factors Plant side hot heat Fouling Factor Plant side cold heat exchanger exchanger F.F. Tmin Tmax [m^2°C*W] 1,00 1,00 0,00 1,00 1,00 0,00 1,80E-05 1,00 1,00 0,00 1,00 1,00 0,00 4,40E-05 1,00 1,00 0,00 0,99 1,03 1,00 8,80E-05... - Page 31 Electrical connections Alarm Relay – Electrical connections External reset of the setpoint of the water - Electrical connection (Optional) The unit is equipped with an alarm relay, which changes state every time an alarm occurs in one of the cooling The local setpoint of the unit can be varied via an circuits.
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Page 32: Unit Operation
Unit operation Unit operation Inside the compressor the oil is contained in the sump, fl owing in the lubrication circuit via a fi lter and reaches the injection points on the bearings and on the screw Operator Responsibilities and towards the cylinder of the sliding drawer that regulates the capacity control It is important that the operator is properly trained and become familiar with the equipment before working on... - Page 33 Oil compressor load Filter oil The compressors are equipped with an oil fi lter fl ange directly into the oil sump.The fi lter with fi lter element easily Replaceable, has a high effi ciency and a pressure drop below 0.6 bar Pressostato differenziale Filtro olio che consente di monitorare la...
- Page 34 Oil compressor load Resistance is not have direct contact with the oil, its a pair of connections the fl ow switch is connected to the possible repositioning is made extremely easy. The oil circuit and monitors signaling the actual passage of heating of the oil is necessary in all cases: oil in the circuit irrespective of the quantity of oil in the sump.
- Page 35 Oil compressor load Power supply to the auxiliary circuit The connection to the power circuit is internal to the panel and is performed in the factory. The compressor oil heaters, guards against the overheating of the compressor, and the probe safety chilled water are connected so as to be operational always, as long as there is power to the electrical panel.
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Page 36: Pre-Startup Checks
(if installed) taps. characteristics of the process water locally. Trane is not responsible for damage or bad operation of the apparatus resulting from failure to treat water or from WARNING! Do not start up the compressors if the incorrectly treated water. -
Page 37: Electrical Supply
Electrical supply Electrical supply Important! If the grid voltage has an imbalance greater than 3%, The supply voltage of the unit must be equal to that contact the company for distribution of electricity. specifi ed on the rating plate ± 10%, while in voltage Operating the unit with a bias voltage between phases unbalance between phases must not exceed ±... -
Page 38: Start-Up Preliminary Procedures
Start-up preliminary procedures Start-up preliminary procedures Refrigerant seals control Units are sent with the complete charge of refrigerant Initial controls and are at a suffi cient pressure to check the seal after Before starting the unit, even only momentarily, all installing. -
Page 39: Check List - Mandatory Operation Control Before Start Up
SITE: ADDRESS: POSTCODE: COUNTRY: THE INTENDED PURPOSE OF UnitS IS NOT FOR INDUSTRIAL APPLICATION. PLEASE CONTACT TRANE TECHNICAL DEPARTMENT IN CASE OF INDUSTRIAL APPLICATION. GENERAL COMPLIANCE THE HYDRAULIC CIRCUIT IS COMPLETE AND READY TO BE USED AND THE THERMAL LOAD IS AVAILABLE. - Page 40 TAMPERING / UNAUTHORIZED MODIFICATIONS TO THE REFRIGERANT CIRCUIT OR THE HYDRAULIC CIRCUIT 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 41 THE FILTER INDICATOR LIGHT ON THE LIQUID LINE IS GREEN. WARNING!: THE YELLOW INDICATOR LIGHT INDICATES PRESENCE OF MOISTURE IN THE CIRCUIT. IN THIS CASE PLEASE CONTACT TRANE. WATER CIRCUIT THE FILTER IS INSTALLED ON ALL THE HEAT EXCHANGERS INLET PIPES,AT A MAXIMUM DISTANCE OF 2 METERS FROM THE UNIT.
- Page 42 UP THE UNIT, UNTIL THE CORRECT DELTA T IS ASSURED AND THE HYDRAULIC PRESSURE IS CONFORM TO THE PLANT AND TO THE WATER PRESSURE DROPS. FOR FURTHER TECHNICAL INFORMATIONS PLEASE REFER TO TRANE DOCUMENTATIONS AND PROCEDURE FOR THE FIRST START UP.
- Page 43 Refrigerant replacement procedure Refrigerant replacement procedure 4) Add enough refrigerant to fi ll the liquid pilot lamp entirely, until the passage of bubbles inside stops. 1) If the unit has exhausted the refrigerant, it is Add an extra 2 or 3 kg of refrigerant as a reserve, to fi ll necessary fi...
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Page 44: Refrigerant Replacement Procedure
Refrigerant replacement procedure Table Pressure/Temperature of HFC-410 °C °C °C °C 4,04 9,61 19,68 36,29 4,35 10,20 20,69 37,91 4,67 10,82 21,75 39,59 5,02 11,46 22,84 41,32 5,38 12,14 23,98 43,11 5,76 12,85 25,16 44,97 6,16 13,58 26,39 6,58 14,35 27,65 7,03 15,15... - Page 45 Refrigerant replacement procedure Refrigerant charge Charge with unit stopped and in vacuum (refrigerant charge in the liquid phase) Completely open the valve for it to close the service spia liquido connection. Connect the refrigerant cylinder to the service connection without tightening the connection. Half close the liquid shut off valve.
- Page 46 Refrigerant replacement procedure WARNING! The symptoms of a low refrigerant charge 3. Verify that all control apparatus is in good condition are: and functioning and that there is a suitable thermal load for startup. • Low evaporation pressure 4. Verify that all the connection valves are well tightened •...
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Page 47: Refrigerant Loading
Refrigerant loading Refrigerant loading The charging of the unit can be made in any load condition stable (preferably between 70 and 100%) and WARNING! in every condition of temperature (preferably higher than 20 °C). The unit should be maintained turned on The units are designed to work with R134a refrigerant. -
Page 48: Start Up
Start up Start up 2. Wait for the start of the microprocessor and control. Make sure that the temperature of the oil is hot enough. The oil temperature must be at least 5 °C Preliminary checks higher than the saturation temperature of the refrigerant inside the compressor. - Page 49 Start up Measure the values of pressure and temperature instrumentation suitable vehicle with various pti indicated and make comparison by reading the corresponding values directly on the display of the microprocessor on board. 17. Repeat steps 11 to 16 for the second circuit. 18.
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Page 50: System Maintenance
System maintenance System maintenance Compressor Maintenance Although the single-screw compressor is of the semi- WARNING! hermetic type and therefore does not need scheduled All activities of ordinary and extraordinary maintenance maintenance in order to keep the compressor at on the unit must be carried out by qualifi ed personnel optimum levels of performance and effi... -
Page 51: Standard Control
Standard Control Standard Control Operations description Recommended frequency Compressors oil level check Monthly Inlet temperature check (overheating) Monthly Water circuits fi lling check Monthly Fans and compressors motors electrical input check Monthly Power supply and auxiliary power voltage check Monthly Refrigerant charge check through sight glass Monthly Compressors carter heaters operation check... -
Page 52: Unit Test Sheet
Unit test sheet Unit test sheet Electrical measurements Analysis of the unit’s voltage unbalance: It is advisable to periodically detect the following Phases: operating data to verify the correct functionality of the unit in time. These data will also be of great benefi t to the technicians who carry out routine and / or _____ V _____ V... -
Page 53: Recommended Spare Parts
Recommended spare parts Below is a list of the recommended parts for several to the commissioned order, including the part number of years of operation. Trane is at your disposal to the equipment. recommend a personalised list of accessories according... -
Page 54: Ordinary Maintenance
Ordinary Maintenance Ordinary Maintenance Programmed maintenance Activities list Week Month (1) Year (2) General: Data collection operation (Note 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... -
Page 55: Dehydration Fi Lter Repositioning
Dehydration fi lter repositioning 15. Connect the vacuum pump to the fi lter and evacuate Dehydration fi lter repositioning up to 230 Pa. It is recommended the repositioning of fi lter cartridges Dryer 16. Close the valve on the vacuum pump. in the case of high pressure drop across the fi... -
Page 56: Disposal
Oil Filter repositioning Oil fi lter repositioning procedure 7.11 Disposal 1) Turn off both compressors turning the switches in Unit disconnection the off position The unit disposal must be performed by qualifi ed 2) Turn the main switch OFF wait until the circulation personnel. -
Page 57: Service And Limited Warranty
We strongly advise stipulating a maintenance contract with Trane Service in order to ensure effi cient and problem-free service, thanks to the expertise and experience of our personnel. -
Page 58: Important Information Regarding The Refrigerant Used
Important information regarding the refrigerant used Important information GWP (1) 1300 (1) GWP = global warming potential regarding the refrigerant The amount of refrigerant is indicated on the name plate used of the unit. You may be required Periodical inspections for refrigerant leaks according to the local regulations and / This product contains fl... -
Page 59: Hydraulic Connections
The installation instructions included in the statements to follow, represent a necessary condition for the validity of the warranty. Trane is at your disposal to examine any differing needs, which still must be approved prior to the operation of the unit. -
Page 60: Dimensional Drawing And Weight
Once the cause has been identifi ed, you are advised to WARNING! Extreme care should be taken when contact a Trane service centre or a qualifi ed technician for performing work or repairs on the unit: overconfi dence help. - Page 61 Troubleshooting Who can take corrective action SYMPTOM cooling heating U = User Probable cause Possible remedy S = specialised personnel Compressor burnt or Replace the compressor seized Check the voltage across Compressor contactor the coil of the compressor de-energized contactor and the continuity of the coil Investigate the cause of the protection, and check if there...
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Page 62: Symptom Cooling
Troubleshooting Who can take corrective action SYMPTOM cooling heating Probable cause Possible remedy U = User S = specialised personnel Pressure switch out of Check and replace order Circuit completely empty See point G Finned coil clogged, air Remove dirt from the coil fl... -
Page 63: Compressor
Troubleshooting Who can take corrective action SYMPTOM cooling heating Probable cause Possible remedy U = User S = specialised personnel I Frost in liquid pipe The liquid fi lter is clogged Replace the fi lter downstream from a fi lter Lack of refrigerant gas See item G. - Page 64 Trane optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, the leader in creating and sustaining safe, comfortable and energy effi cient environments, Trane offers a broad portfolio of advanced controls and HVAC systems, comprehensive building services and parts. For more information visit www. Trane.com Ingersoll-Rand International Limited - 170/175 Lakeview Drive, Airside Business Park, Swords, Co.