Trane Flex II Original Instructions Manual
  1. Manuals
  2. Brands
  3. Trane Manuals
  4. Heat Pump
  5. Flex II
  6. Original instructions manual

Trane Flex II Original Instructions Manual

Air-to-water heat pumps with fixed speed scroll compressors
Hide thumbs
Table of Contents

Advertisement

Quick Links

Installation
Operation
Maintenance
Flex II
Air-to-water heat pumps with fixed
speed scroll compressors
CG-SVX048A-GB
Original instructions

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Flex II and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Trane Flex II

Summary of Contents for Trane Flex II

  • Page 1 Installation Operation Maintenance Flex II Air-to-water heat pumps with fixed speed scroll compressors CG-SVX048A-GB Original instructions...

  • Page 2: Table Of Contents

    Contents 1 OVERVIEW ............................. 4 2 SAFETY REGULATIONS ........................4 3 OPERATING LIMITS ........................7 4 INSTALLATION ..........................10 5 ACOUSTIC PROTECTION ......................12 6 ELECTRICAL POWER SUPPLY ....................... 12 7 WATER CONNECTIONS ......................... 13 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 Before disconnecting, removing tubes, filters, joints or other line parts intercept the connection tubes, empty them • until the pressure reaches that of the atmosphere. Do not use your hands to check for possible pressure losses. • Always use tools which are in good condition; make sure the instructions have been fully understood before using them. •...
  • Page 5 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. • VERY IMPORTANT No high pressure safety valve is installed on the unit.

  • Page 6: Operating Limits

    CAUTION: The operation outside the limits specified may cause the activation of the protections and disrupt the operation of the unit and, in extreme cases, damage the unit. In case of doubt, contact Trane. These operating limits apply to unit operating at full load.
  • Page 7 HEAT PUMP MODE -15°C OAT = Outdoor Air Temperature [°C] LWT = Leaving Water Temperature [°C] Low ambient kit down to -15°C: Heater in control box •...
  • Page 8 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 0,99 0,988 0,986 0,984 0,982 0,981 Power input coefficient 1,003 1,01...

  • Page 9: Installation

    INSTALLATION 4.1 MOVING AND POSITIONING THE UNIT The units have been designed to be lifted from above by means of eyebolts and holes in the base members. Use retractor bars to keep the lifting wires or chains away from the unit. Lifting procedures provided with the unit have to be respected.
  • Page 10 4.2 MINIMUM SPACE REQUIREMENTS Dimensional drawing shall be respected to avoid: • Noise • Incorrect heat exchange and ventilation • Difficult maintenance or inaccessibility to components It is fundamental to respect minimum distances on all units, in order to ensure optimum ventilation for the condenser coils.

  • Page 11: Acoustic Protection

    Avoid installing the unit in the immediate vicinity of plants that can prevent proper intake and discharge air. 4.7 CONTROL OF COMPRESSOR FASTENING The compressors are fitted on shock absorbers. For fixing through spring anti-vibration mounts, it is necessary to remove blockages put to fasten the compressors, as indicated on the label on compressors body.

  • Page 12: Water Connections

    The above-mentioned installation indications represent necessary conditions for the warranty to be valid. Trane is at your disposal to examine any different requirements, which have to be approved before starting up the unit. It is necessary that the water flow rate to the unit is compatible with the evaporator one. It is also necessary that the water flow rate is kept uniform while the unit is running: it is suggested to use always a pump system dedicated to the unit and independent from the remaining part of the plant.
  • Page 13 7.1.1 Calculation of total minimum water content and flow rates The machine needs a minimum water content according to the following values: Cold water heat production Hot water heat production FLEX II Q min Q max Q min Q max...
  • Page 14 The most appropriate water treatment must be determined locally with a specialized company, 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 either in the Low ambient kit down to -10°C in chiller mode or in the Low ambient kit down to -15°C in heat pump mode) for the protection of all the components of the hydraulic circuit inside the unit (pumps, pipes and tank).
  • Page 16 HYDRAULIC VERSIONS FLEX II units are available in six hydraulic versions characterized by complete kits of all major hydraulic components for an easier installation, with reduced time, cost and space. − Stand-alone version with single pump − Stand-alone version with single pump and tank −...
  • Page 17 Antivibration System Flow Switch FIlter 2 Way Valve With ON/OFF Servo Control Figure 5 7.6.3 Hydraulic diagram for stand-alone FLEX II units with single pump + stand-by pump Water Differential Pressure Switch Temperature Probe Relief Valve Remote connections by the installer...
  • Page 18 7.6.4 Hydraulic diagram for stand-alone FLEX II units with single pump + stand-by pump and tank Water Differential Pressure Switch Temperature Probe Relief Valve Remote connections by the installer Expansion Vessel Gauges Safety Valve (6 bar) Shut Off Valve Pump...
  • Page 19 Antivibration System Flow Switch FIlter 2 Way Valve With ON/OFF Servo Control Figure 9 7.6.7 Hydraulic diagram for modular FLEX II units with single pump + stand by pump Water Differential Pressure Switch Temperature Probe Relief Valve Expansion Vessel 6” VICTAULIC MANIFOLD...
  • Page 20 CUSTOMER PLANT SKETCHES 7.7.1 Customer plant sketch with primary pump for a stand-alone unit with no on board pump CUSTOMER PLANT AIR CONDITIONING WATER PUMP Primary Pump FANCOIL WATER TANK Secondary Pump Temperature Probe Flow Switch Drainage Vent Valve Expansion Vessel Filling Group Steel Mesh Strainer Check Valve...
  • Page 21 7.7.2 Customer plant sketch without primary pump for a stand-alone unit with on board single pump or single pump+ stand-by pump CUSTOMER PLANT AIR CONDITIONING WATER PUMP FANCOIL Primary Pump WATER TANK Secondary Pump Temperature Probe Flow Switch Drainage Vent Valve Expansion Vessel Filling Group Steel Mesh Strainer...
  • Page 22 7.7.3 Customer plant sketch with primary pump for modular units with no on board pump CUSTOMER PLANT AIR CONDITIONING WATER PUMP FANCOIL Primary Pump WATER TANK Secondary Pump Temperature Probe Flow Switch Drainage Vent Valve Expansion Vessel Filling Group Steel Mesh Strainer Check Valve Safety Valve Interception Valve...
  • Page 23 7.7.5 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.
  • Page 24 8 STANDARD REFRIGERANT SCHEMATIC INDEX INDEX COMPRESSOR ELECTRONIC EXPANSION VALVE EVAPORATING/CONDENSING EVAPORATOR/CONDENSER COIL DESUPERHEATER (IF PRESENT) FOR HP PRESSURE SWITCH PARTIAL RECOVERY LP PRESSURE SWITCH Rliq LIQUID RECEIVER CARTER HEATER SAFETY VALVE LIQUID SEPARATOR FILTER DRIER SERVICE VALVE HP TRANSDUCER LP TRANSDUCER SIGHT GLASS TW in...

  • Page 25: Electrical Panel

    9 ELECTRICAL PANEL All field-installed wiring must be in accordance with local regulation. Be sure to satisfy proper equipment grounding requirements The standardized values - Maximum Amps –Maximum kWatts are displayed on unit nameplate. All field-installed wiring must be checked for proper terminations, and for possible shorts or grounds. Ensure total protection against the possible penetration of water into the connection point.

  • Page 26: Operator Responsabilities

    10 USER RESPONSABILITIES It is important that the operator is properly trained and familiar with the equipment before working on the unit. In addition to reading this manual, the operator must study the manual operation of the microprocessor and the wiring diagram to understand the sequence of start- up, operation, shutdown sequences, and the criterion of operation of all safety devices.

  • Page 27: 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 28 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 PUMP OVERHEATING ARE STANDARD. REFRIGERANT CIRCUIT COMPLIANCE ALL CONNECTIONS ON THE REFRIGERANT CIRCUITS ARE WELL TIGHTENED.
  • Page 29 WATER CIRCUIT COMPLIANCE THE FILTER IS INSTALLED ON THE HEAT EXCHANGER INLET PIPES AT A MAXIMUM DISTANCE OF 2 METERS FROM THE UNIT. PLEASE NOTE THAT THE FILTER INSTALLATION IS MANDATORY. FOR FURTHER TECHNICAL INFORMATION RELATING THE FILTER PLEASE REFER TO THE TECHNICAL DOCUMENTATIONS. THE FLOW SWITCH HAS BEEN INSTALLED AND ELECTRICALLY CONNECTED.
  • Page 30 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 31 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 32: Start-Up

    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.
  • Page 33 13.2 STARTING UP All the compressors mounted on 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: Maintenance

    13.5 START UP PROCEDURE 1) With the switch closed, open the electrical panel and exclude compressor (refer to the wiring diagram on the unit). Close 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 least 5°C higher than the saturation temperature of the refrigerant inside the compressor.
  • Page 35 and sub cooling. A routine maintenance program recommended is shown at the end of this chapter while a card collection of operating data is at the end of this manual. It is suggested to record on a weekly basis all the operating parameters of the unit.
  • Page 36 IMPORTANT In case a temperature control based on ingoing water temperature is needed, contact Trane before 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 14.5 ORDINARY MAINTENANCE Activities list week Month (note 1) Year (note 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 unit...

  • Page 38: Recommended Spare Parts

    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. 1 YEAR...

  • Page 39: Troubleshooting

    TROUBLESHOOTING Who can take corrective action Symptom Cooling 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 40 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 41 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.

  • Page 42: Improper Uses

    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. © 2019 Trane All rights reserved CG-SVX048A-GB March 2019...

Table of Contents