Trane CXAO Installation Operation & Maintenance Download Page 1

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RF-SVX003A-GB

CXAO
Air to water reversible scroll heat pumps
RTXB
Air to water reversible screw heat pumps

Installation Operation
Maintenance

Original instructions

Summary of Contents for CXAO

Page 1: ...RF SVX003A GB CXAO Air to water reversible scroll heat pumps RTXB Air to water reversible screw heat pumps Installation Operation Maintenance Original instructions...

Page 2: ...Water piping 19 2 13 Water treatment 19 2 14 Antifreeze protection on the heat exchanger 20 2 15 Flow switch installation 21 2 16 Hydraulic data 23 2 17 Refrigerant circuit safety valves 29 2 18 Heat...

Page 3: ...52 7 4 Standard Control 52 7 5 Unit test sheet 54 7 6 Recommended spare parts 55 7 7 Improper uses 55 7 8 Ordinary Maintenance 56 7 9 Dehydration filter repositioning 57 7 10 Oil Filter repositioning...

Page 4: ...pancy between this manual and the two documents cited prevail as shown on the wiring diagram and outline drawing Foreword These instructions are given as a guide to good practice in the installation s...

Page 5: ...ent for qualified personnel but it is not intended to replace such personnel All activities must be carried out in compliance with local laws and regulations 1 4 General Warnings This publication has...

Page 6: ...illed in and sent within 8 days from the start up to Trane C The warranty is valid if all the installation and start up instructions have been adhered to both those which may have come fromTrane and t...

Page 7: ...ly by qualified personnel Sharp edges and the surface of the condenser section could cause injury Avoid direct contact Switch off the unit s power supply by opening the main switch before servicing th...

Page 8: ...ight of the unit and the ability to load the lifting device Be careful of obstacles placed in the path that may damage the units bumps ramps hills etc Verify the perfect stability during handling of t...

Page 9: ...entilation for the condenser coils Limited installation space could reduce the normal air flow thus significantly reducing the unit s performance and considerably increasing consumption of electrical...

Page 10: ...ven with a lateral distance less than the recommended When two or more units are positioned side by side it is recommended that a minimum distance of 3600 mm of distance between the condenser coils Co...

Page 11: ...bration 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 c...

Page 12: ...ss to the hydraulic system and electrical components In case of installation in places where there could be gust fixing the unit to the support properly using guy rope if needed Handling and positioni...

Page 13: ...smission of vibrations to the supporting structures fit shock absorbers in every fastening point Rubber shock absorbers are recommended for units installed on the ground spring shock absorbers for uni...

Page 14: ...o ducts In case they have to run without ducts it is the installer duty to provide protection grilles Finned coil for units not equipped with coil protection grilles is completely accessible with dang...

Page 15: ...exposures could give rise to cardiac arrhythmia and sometimes even to death High concentrations can create a reduction of oxygen in air with consequent possibility of suffocation Should it happen the...

Page 16: ...ollowing indicated 12 1 and 13 To protect from safety devices exhausting it is not allowed to remove the protections while the unit is in operation and to approach the unit without wearing the right p...

Page 17: ...has to be dismantled contactTrane Precautions against foliage and external body Avoid the unit installation nearby plants which could obstacle the correct air charge and discharge WARNING Do not use...

Page 18: ...es to be calculated by PrWatt V x 10 tmin 860 where PrWatt is the resistance power Watt and tmin is the lower temperature C 2 If there are not storages maintain the temperature higher than 10 C the wa...

Page 19: ...to the unit near the evaporator and heat recovery if installed The filter avoids solid particles entering the heat exchanger as they could damage it or reduce its heat exchanging capacity 8 The shell...

Page 20: ...to treat water or by improperly treated water Water piping Table Acceptable water quality limits 2 14 Antifreeze protection on the heat exchanger Evaporator and recovery exchangers anti freeze protect...

Page 21: ...the device to compensate for the weight of the headstock If the unit is mounted to the bottom we must take caution that deposits that can form The appliance must be installed in a straight pipe with...

Page 22: ...flow controller must be placed downstream of a further control device for the activation of the alarm condition Installing the filter To ensure proper operation of the heat exchanger it is mandatory t...

Page 23: ...itch on exchanger Discharge taps Taps on pumps suction delivery which allow the replacement of a damaged pump eliminating the plant shutdown differently from other types of common use Check valve Reli...

Page 24: ...Scroll Compressor pump 1 pump 2 pump 6 pump 10 pump 12 pump 14 pump 15 Hp kPa Q m3 h pump 2 pump 3 pump 4 pump 7 pump 8 pump 11 pump 13 H kPa Q m3 h pump 15 pump 16 LOW HEAD PRESSURE PUMP 150 kPa MED...

Page 25: ...RF SVX003A GB Hydraulic data pump 5 pump 9 pump 17 H kPa Q m3 h pump 1 Hp kPa Q m3 h pump 14 pump 10 pump 9 pump 5 pump 4 HIGH HEAD PRESSURE PUMP 450 kPa Screw compressor LOW HEAD PRESSURE PUMP 150 k...

Page 26: ...03A GB Hydraulic data pump 12 Hp kPa Q m3 h pump 13 pump 3 pump 7 pump 8 Hp kPa Q m3 h pump 11 pump 14 pump 2 pump 5 pump 6 pump 9 Q m3 h Hp kPa MEDIUM HEAD PRESSURE PUMP 250 kPa HIGH HEAD PRESSURE PU...

Page 27: ...lant secutiry pressure switch R Shut off valve EWR Evaporator PR Additional pump water pressure switch VR Check valve Hydronic kit with 2 pumps B2 M2 A2 versions M Gauges S Water discharge P Water dis...

Page 28: ...off valve EWR Evaporator PR Additional pump water pressure switch WT Water tank GR Automatic water filling Hydronic kit with 2 pumps and tank XB XM XA versions M Gauges S Water discharge P Pump SV Sa...

Page 29: ...t in excessive water velocity and possible erosion corrosion In the first case low speed can lead to underperformance and easy scaling and in the second case must install pumps with high prevalence en...

Page 30: ...suitable size see electrical data 3 2 Electrical connections Power circuit Connect the power supply wires directly to the terminals of the overall place in the framework of the unit The access panel m...

Page 31: ...switch or a BMS Once closed the microprocessor starts the boot sequence before turning on the water pump and then the compressors On opening the contact the microprocessor starts the shutdown sequence...

Page 32: ...he cylindrical chambers Control of the sliding drawer throttle for adjusting the capacity Cooling of bearings and temperature uniformity Inside the compressor the oil is contained in the sump flowing...

Page 33: ...SA170 POE MOBIL EAL ARTIC 170 POE FRASCOLD FC170 Lubricating oil The lubricating oil shall be Good viscosity characteristics at high temperatures Good miscibility with the refrigerant at low temperat...

Page 34: ...Compressor Downtime Danger of condensation of the refrigerant inside the compressor High refrigerant charge Installations in cold environments At the first start up and subsequent closure period start...

Page 35: ...tween compressors in parallel but falling in the upper and lower limits are considered normal Next to the lamp there is a connection on every compressor for draining the oil and a connection for refil...

Page 36: ...t of an erroneous phase sequence Properly connect the electrical terminals to the disconnect switch so as to ensure alarm free operation In the event that after the unit has been powered on the phase...

Page 37: ...the phases is greater than 3 Use the following formula for the control Voltage unbalance Max voltage deviation from average medium voltage 100 Important If the grid voltage has an imbalance greater t...

Page 38: ...e general switch open check that the electrical connections are tightly clamped Check for any possible refrigerant leaks Check that the electrical data on the label correspond to those of the mains su...

Page 39: ...SS THE PLANT IS READY AND THE WATER LOAD IS AVAILABLE 2 THE UNIT DISPLAYS DENTS OR DAMAGES ON THE EXTERNAL CASING OCCURRED DURING THE TRANSPORTATION OR POSITIONING IF ANY SPECIFY BELOW WARNING PLEASE...

Page 40: ...CALL OFF OF THE WARRANTY 9 SPOTTED PRESENCE OF MOLD MUSHROOMS BACTERIA MICROBIAL OF ANY TYPE 10 THE UNIT DISPLAYS DAMAGES CAUSED BY FLOODS LIGHTNING FIRE ANY ACCIDENT BEYOND TRANE S CONTROL ELECTRIC A...

Page 41: ...HT INDICATES PRESENCE OF MOISTURE IN THE CIRCUIT IN THIS CASE PLEASE CONTACT TRANE WATER CIRCUIT 28 THE FILTER IS INSTALLED ON ALL THE HEAT EXCHANGERS INLET PIPES AT A MAXIMUM DISTANCE OF 2 METERS FRO...

Page 42: ...LT 41 THE PRESSURE RELIEF VALVE IS INSTALLED BETWEEN DELIVERY AND RETURN PIPES WARNING IN ORDER TO AVOID WATER HAMMER THE RELIEF VALVE PRESSURE SHALL BE SET UP IN ACCORDANCE WITH THE STANDARD OPERATIN...

Page 43: ...of bubbles inside stops Add an extra 2 or 3 kg of refrigerant as a reserve to fill the undercooler if the compressor is operating at 50 100 load 5 Check the undercooling value by taking the liquid pr...

Page 44: ...8 4 35 8 10 20 34 20 69 60 37 91 16 4 67 10 10 82 36 21 75 62 39 59 14 5 02 12 11 46 38 22 84 64 41 32 12 5 38 14 12 14 40 23 98 66 43 11 10 5 76 16 12 85 42 25 16 68 44 97 8 6 16 18 13 58 44 26 39 6...

Page 45: ...the equilibrium pressure on the evaporator on the low pressure gauge and the corresponding saturation temperature Overheating is equal to the difference between the measured temperatures Measure then...

Page 46: ...ising to open all the taps before starting the compressors 6 If no water and glycole mixture has been introduced into the system discharge all the water from the evaporator and from the connected pipi...

Page 47: ...arging of the unit can be made in any load condition stable preferably between 70 and 100 and in every condition of temperature preferably higher than 20 C The unit should be maintained turned on for...

Page 48: ...ose the panel set switch to ON to give power to the unit 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 l...

Page 49: ...turn off the unit turn off daily or weekend put on standby the unit key or open the remote contact terminals shown in the wiring diagram on Borod unit of the terminal X Installing a remote switch by...

Page 50: ...e operating parameters of the unit The collection of these data will be very useful to technicians in case it is requested technical assistance Compressor Maintenance Although the single screw compres...

Page 51: ...emperature sensor This sensor is located on the evaporator ingoing water connection and is used for monitoring the return water temperature External air temperature sensor Optional This sensor allows...

Page 52: ..._____ C Intake gas pressure _____ C Intake overheating _____ C Saturated condensation temperature _____ C Delivery overheating _____ C Liquid temperature _____ C Undercooling _____ C Circuit 2 Compre...

Page 53: ...aters 1 per type Crankcase heaters all Crankcase heaters all Reversing valves 1 per type Reversing valves 1 per type Reversing valves all Check valves 1 per type Check valves 1 per type Check valves a...

Page 54: ...heck the pressure drop of the filter drier X Check the pressure drop of the oil filter Note 5 X Carry out the analysis of the vibrations of the compressor X Carry out the analysis of the acidity of th...

Page 55: ...r from the filter drier 11 Remove the filter elements 12 Install the new filter elements within the filter 13 Replace the cover gasket Do not oil the filter gasket with mineral oil to non contaminatio...

Page 56: ...e screws The screws should be tightened alternately progressively tightening torque 60Nm 12 Load the oil from the top cap placed on the oil separator Given the high hygroscopicity foreign oil the Oil...

Page 57: ...g the unit in an inappropriate manner beyond its operating limits or not performing proper maintenance according to this manual can void the warranty Observe the following points in particular in orde...

Page 58: ...ccording to the local regulations and or European For more detailed information contact your local dealer 10 Plant sketch 10 1 Standard sketch INSTALLATION SKETCH PARTIAL RECOVERY CUSTOMER CARE FROM T...

Page 59: ...ditioning system Accumulations undersized reduce the useful life of the unit design For proper operation of the unit it is absolutely necessary to ensure a constant flow rate to the unit particularly...

Page 60: ...freeze thermostat X X S Frost sensor defective Check the operation X X S Tripped circuit breaker Check if there are any short circuits in the wiring or in the windings of the motors of pump fan compr...

Page 61: ...The compressor starts up and stops repeatedly X X S Intervention of the minimum value of set point See point E X X S Compressor contactor defective Check and replace if necessary X X U Calibration va...

Page 62: ...ant filter clogged Check and replace X X S Expansion device that is not working properly Check and if necessary replace X X S The presence of moisture in the refrigerant circuit Replace dry filter and...

Page 63: ...lve defective Check the power supply and the coils of the valve and replace the valve N Frost in the compressor intake pipe X X S Expansion device that is not working properly Verify replace X S Water...

Page 64: ...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...

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