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TF7038GB_A_NOT

 

 

7.  MAINTENANCE AND SERVICE 

EXTRAORDINARY MAINTENANCE 

The Connect units are factory filled with R410A gas and fully tested. As per standard conditions, technical 
service does not need to intervene to check the cooling gas. Over time, small losses may occur at the 
joints causing the refrigerant to leak, draining the circuit. This will cause the unit to malfunction. In these 
cases, the refrigerant outlet points must be determined, repaired and the cooling circuit replenished. 

The following procedure should be used for filling: 

 

  Empty and drain the entire cooling circuit. Use a vacuum pump connected to both the low- and 

high-pressure ports until the negative-pressure gauge reads approximately 10 Pa. Wait a few 
minutes and make sure that said value does not rise above 50 Pa again. 

  Connect the cooling gas cylinder or filling cylinder to the connection on the low-pressure line. 

  Add the quantity of cooling gas specified on the unit type plate. 

  After a few hours of operation, check that the liquid indicator indicates that the circuit is dry (dry 

– 

green). In the case of partial losses, the circuit must be completely emptied before being refilled. 

  The refrigerant R410A may only be added when liquid. 

  Operating conditions that deviate from the nominal values lead to deviating values. 

  A leak test or leak detection may only be carried out with refrigerant R410A and suitable leak 

detection devices. 

  The use of oxygen, acetylene or other flammable or toxic gases in the cooling circuit is prohibited, 

as this can lead to explosions and poisoning. 

 
 
 

   

CAUTION 

Safety checks, maintenance work and repairs may only be carried out by a legally qualified 
technician. 
Inadequate inspections/maintenance work can lead to damage to objects and persons. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

 

 

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Summary of Contents for CONNECT WP120

Page 1: ...CONNECT WP120 CONNECT WP130 v2017 2 TECHNICAL MANUAL INSTALLATION AND MAINTENANCE INSTRUCTIONS...

Page 2: ...meets the requirements of the EU Machinery Directive with regard to safety The quality level is continually monitored and Aereco products therefore represent safety quality and reliability Data may be...

Page 3: ...13 3 RECEIVING AND MOVING THE UNIT 14 4 INTEGRATION IN THE BUILDING HEATING SYSTEM 16 RECOMMENDATION AND SYSTEM DIAGRAM WITH AWN STRATIFIED STORAGE 16 SETTINGS FOR USE WITH STRATIFIED STORAGE 17 SETT...

Page 4: ...ect WP130 Type Inverter controlled source controlled brine water heat pump Application purpose For exhaust air heat recovery in conjunction with Aereco AWN Basic products for exhaust air conveyance wi...

Page 5: ...The unit must be installed by an approved specialist in compliance with the national legislation in force in the country of destination Aereco shall not accept any liability for damage resulting from...

Page 6: ...isation whereby high levels of efficiency can be achieved Connections All power and water connections are in the upper section of the unit which makes installation and maintenance easier By reducing t...

Page 7: ...ements made from hot dipped galvanised sheet steel of the appropriate strength All components feature a weather resistant polyester powder coating RAL 9002 During the design phase it was ensured that...

Page 8: ...vibration dampers The intended fixing points are shown on the schematic Connect WP 120 Connect WP 130 2 2 3 POSITION OF THE MEDIA CONNECTIONS Connect WP 120 Connect WP 130 Connect AWN connection side...

Page 9: ...rformance ranges FILTER DRYER A hermetic mechanical filter dryer with cartridges made of ceramic and hygroscopic material retains impurities and any traces of moisture present in the cooling circuit T...

Page 10: ...how to do this are also included with the unit HEAT METER VOLUME MEASURING UNIT A heat meter determines the volume flow of the heating water in the heat pump and its temperature at the heat pump heat...

Page 11: ...ard settings and any changes are saved in the controller control panel After a power failure the unit is able to restart automatically and retains the original settings Some accesses are password prot...

Page 12: ...able external feed pressure 52 kPa 48 kPa Medium Ethylene glycol 35 Ethylene glycol 35 Flow return connections 1 IG 1 IG HEATING CIRCUIT Heating circuit water volume flow max 1 805 l h 3 155 l h Avail...

Page 13: ...rator FD Filter dryer FM Water filter PD Differential pressure switch for brine circuit flow monitoring PH Heating circuit charge pump PS Brine circuit pump VE Brine circuit membrane expansion vessel...

Page 14: ...re subjected to a final inspection at the factory and only need to be connected to the electricity and water supply at the installation site Before the unit is installed its installation location must...

Page 15: ...rations are possible The drawings are for illustrative purposes only The specified technical minimum distances must be observed height and rear side must be designed according to the type of installat...

Page 16: ...ller measures the temperature in the upper section of the stratified tank S1 and the heating water return S2 in the heating circuit installed on site The controller takes these measured variables into...

Page 17: ...trol of the treated water and thus increases the energy efficiency of the system in this integration variant In this case the following steps must be carried out Remove the cable bridge on input termi...

Page 18: ...ting value of the vessel is 2 3 bar If the setting value obtained by the calculation is less than 1 5 bar i e for H 12 25 the standard setting must be retained For height differences of over 55 m a sp...

Page 19: ...m the pipes These substances may otherwise accumulate inside the unit and lead to the unit malfunctioning CAUTION The connecting lines must be adequately supported so that their weight does not burden...

Page 20: ...gs and power consumption deviating from the nominal value in the corresponding chapter Heating mode operating ranges 70 60 50 40 30 20 2 4 6 8 10 12 14 16 18 Water outlet temperature to the AWN C When...

Page 21: ...TIFREEZE 5 2 1 ETHYLENE GLYCOL SOLUTIONS CORRECTION FACTORS WITH ETHYLENE GLYCOL SOLUTIONS HEATING Freezing point C 0 3 63 6 10 8 93 12 11 15 74 19 94 24 79 30 44 37 10 Ethylene glycol percentage 0 10...

Page 22: ...and its safety device to be checked 8 Information on the adjacent hydraulic losses of the brine pipeline AWN circuit is available INDIVIDUAL STEPS TO BE COMPLETED DURING INSTALLATION 1 System check v...

Page 23: ...e above 50 Pa again Connect the cooling gas cylinder or filling cylinder to the connection on the low pressure line Add the quantity of cooling gas specified on the unit type plate After a few hours o...

Page 24: ...operation Clean the water filter check proper operation of the pump shut offs in the pipeline network must be open Electric Fuses Work correctly Replacement Supply voltage According to technical data...

Page 25: ...ich can be used to trace the operations carried out on the unit This means interventions can be organised more easily searches can be made easier and machine defects can be avoided The date type of in...

Page 26: ...Directive 2004 108 EC Pressure Equipment Directive PED 97 23 EC EN 378 DIN EN 14276 Electric EN 60204 1 Acoustic Sound power EN ISO 9614 2 Peak Sound Pressure Level EN ISO 3744 Refrigerant This unit c...

Page 27: ...TF7038GB_A_NOT Notes 27...

Page 28: ...TF7038GB_A_NOT Exhaust air heat pump operating instructions TF7038GB_A_NOT control console v 2017 2 Copyright Aereco...

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