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Table of Contents
Related Manuals for Danfoss AR05 017 Series
Summary of Contents for Danfoss AR05 017 Series
- Page 1 AR05 Reversible Air-to-Water Heat Pumps Nominal cooling capacity 40-150 kW Nominal heating capacity 40-160 kW 50 Hz For the operation of the control please refer to the Control manual for the AR05 017-160 series Installation, operation and maintenance instructions...
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Page 2: Table Of Contents
CONTENTS 1 INTRODUCTION ................................... 4 1.2 - Check equipment received ......................................4 1.3 - Installation safety considerations ....................................5 1.4 - Equipment and components under pressure ..............................5 1.5 - Maintenance safety considerations ..................................6 1.6 - Repair safety considerations ......................................6 2 MOVING AND SITING THE UNIT ............................8 2.1 - Moving ...............................................8 2.2 - Siting the unit ..........................................8 2.3 - Checks before system start-up....................................8... - Page 3 14.1 - Compressors ..........................................26 14.2 - Lubricant ............................................. 26 14.3 - Air evaporator/condenser ..................................... 26 14.4 - Fans..............................................26 14.5 - Electronic expansion valve (EXV) ..................................26 14.6 - Moisture indicator ........................................26 14.7 - Filter drier ............................................ 26 14.8 - Water evaporator/condenser ....................................
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Page 4: Introduction
1 INTRODUCTION 1.2 - Check equipment received Prior to the initial start-up of the AR05 units, the people • Inspect the unit for damage or missing parts. If damage is involved should be thoroughly familiar with these instructions detected, or if shipment is incomplete, immediately fi le a and the specifi... -
Page 5: Installation Safety Considerations
1.3 - Installation safety considerations If the safety relief valves are installed on a reversing valve (changeover), this is equipped with a safety relief valve on each After the unit has been received, when it is ready to be of the two outlets. Only one of the two safety relief valves is in installed or reinstalled, and before it is started up, it must be operation, the other one is isolated. -
Page 6: Maintenance Safety Considerations
1.5 - Maintenance safety considerations OPERATING CHECKS: • IMPORTANT INFORMATION REGARDING THE Engineers working on the electric or refrigeration compo- REFRIGERANT USED: nents must be authorized, trained and fully qualifi ed to do so This product contains fl uorinated greenhouse gas covered by (e.g. - Page 7 Never exceed the specifi ed maximum operating pressures. Do not climb on a machine. Use a platform, or staging to Verify the allowable maximum high- and low-side test work at higher levels. pressures by checking the instructions in this manual and the pressures given on the unit name plate.
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Page 8: Moving And Siting The Unit
2 MOVING AND SITING THE UNIT 2.3 - Checks before system start-up 2.1 - Moving Before the start-up of the refrigeration system, the complete installation, including the refrigeration system must be See chapter “Installation safety considerations”. verifi ed against the installation drawings, dimensional drawings, system piping and instrumentation diagrams and 2.2 - Siting the unit the wiring diagrams. -
Page 9: Dimensions, Clearances
4 DIMENSIONS, CLEARANCES 4.1 - AR05 039 and 045-078, units with and without hydronic module NOTES: Legend: Non-certifi ed drawings. All dimensions are given in mm Refer to the certifi ed dimensional drawings supplied with the unit or available on request, when designing an installation. -
Page 10: Ar05 080-160, Units With And Without Hydronic Module
4.2 - AR05 080-160, units with and without hydronic module NOTES: Legend: Non-certifi ed drawings. All dimensions are given in mm Refer to the certifi ed dimensional drawings supplied with the unit or available on request, when designing an installation. Control box For the location of fi... -
Page 11: Physical Data, Ar05 Units
5 PHYSICAL DATA, AR05 UNITS AR05 Operating weight* Standard unit without hydronic module 1060 1078 Standard unit + optional hydronic module Single high-pressure pump 1099 1117 Dual high-pressure pump 1043 1136 1127 Sound levels Sound power level 10 dB(A) Sound pressure level at 10 m*** dB(A) Compressors... - Page 12 Machines Directive § 1.5.1. considered, always contact your local Danfoss representative. • Annex B of EN 60204-1 describes the electrical characteristics used for the operation of the machines.
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Page 13: Application Data
°C Note: Do not exceed the maximum operating temperature. For entering water temperatures below 7.5°C at start-up, contact Danfoss. For low-temperature applications, where the leaving water temperature is below 5°C, a frost protection solution must be used. For low evaporator leaving water temperatures (<... -
Page 14: Electrical Connection
10.2 - Power supply installation site. The following is only to be used as a guide- line, and does not make Danfoss in any way liable. After wire The power supply must conform to the specifi cation on the sizing has been completed, using the certifi ed dimen-sional heat pump nameplate. -
Page 15: Field Control Wiring
In case additives or other fl uids than those recommended by main points to be checked for the connection: Danfoss are used, ensure that the fl uids are not considered as • Comply with the water inlet and outlet connections a gas, and that they belong to class 2, as defi... -
Page 16: Hydronic Connections
• Install thermometers in both the entering and leaving Never switch off the water heat exchanger and hydronic water connections. circuit heaters or the pump, otherwise frost protection • Install drain connections at all low points to allow the can-not be guaranteed. For this reason the main unit whole circuit to be drained. - Page 17 Typical hydronic circuit diagram with hydronic module Legend Components of the unit and hydronic module Installation components Victaulic screen fi lter Temperature probe well Expansion tank Air vent Safety valve Flexible connection Available pressure pump Shut-off...
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Page 18: Nominal System Water Flow Control
12 NOMINAL SYSTEM WATER FLOW CONTROL Hydronic circuit cleaning procedure • Open the valve fully (item 20). The water circulation pumps of the AR05 units have been • Start-up the system pump. sized to allow the hydronic modules to cover all possible •... -
Page 19: Units With Hydronic Module And Fi Xed-Speed Pump
Example: AR05 078 at Eurovent conditions of 3.7 l/s Hydronic circuit cleaning procedure • Open the valve fully (item 20). • Start-up the system pump. • Read the plate heat exchanger pressure drop by taking the diff erence of the readings of the pressure gauge connected to the unit inlet and outlet (item 19). -
Page 20: Units With Hydronic Module And Variable-Speed Pump - Temperature Diff Erence Control
The system calculates the measured pressure diff erential Pressure diff erential set point control procedure value, compares it with the user-selected set point value and Once the circuit has been cleaned, select the hydronic circuit modulates the pump speed as necessary. The result is: confi... - Page 21 This fl ow rate variation is realised, observing the minimum and maximum admissible unit fl ow rates as well as the minimum and maximum pump supply frequency values. The delta T value maintained can in certain cases be diff erent from the set point value: •...
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Page 22: Plate Heat Exchanger Pressure Drop (Including Internal Piping) - Units Without Hydronic Module
12.5 - Plate heat exchanger pressure drop (including internal piping) - units without hydronic module AR05 039-078 AR05 080-160 Water fl ow rate, l/s Water fl ow rate, l/s Legend Legend AR05 080 AR05 039 AR05 090 AR05 045 AR05 100 AR05 050 AR05 060 AR05 120... -
Page 23: Available Static System Pressure - Units With Hydronic Module (Fi Xed-Speed Or Variable-Speed Pump, 50 Hz)
12.7 - Available static system pressure - units with hydronic module (fi xed-speed or variable-speed pump, 50 Hz) Low pressure pumps Water fl ow rate, l/s Water fl ow rate, l/s Legend Legend AR05 039 AR05 080 AR05 045 AR05 090 AR05 050 AR05 100 AR05 060... -
Page 24: StartUp
13 STARTUP Standard confi guration: return water control 13.1 - Preliminary checks Never be tempted to start the heat pump without reading fully, and understanding, the operating instructions and without having carried out the following pre-start checks: • Check the chilled water circulation pumps, air handling units and all other equipment connected to the evapo- rator. -
Page 25: Supplementary Electric Resistance Heaters
13.4 - Supplementary electric resistance heaters Typical accessory installation diagram To permit staging of the capacity reduction of the heat pump at low ambient temperatures, as shown in the diagram below, it is possible to install supplementary electric heaters in the leaving water line. -
Page 26: Major System Components
This is also the case for three quarters of the sight-glass (unit in vacuum). the products originally supplied by Danfoss. ATTENTION: Too much oil in the circuit can cause a unit NOTES - Monitoring during operation: defect. -
Page 27: Options And Accessories
14.13 - Control box The control box of the AR05 units is equipped with electric heaters to prevent condensation during operation at low outside temperatures. They are installed on the top of the control box on the outside, and are covered by a thermal insulation layer. -
Page 28: Standard Maintenance
16 STANDARD MAINTENANCE Electrical checks • At least once a year tighten the power circuit electrical Air conditioning equipment must be maintained by profes- connections (see table with tightening torques). sional technicians, whilst routine checks can be carried out •... -
Page 29: Level 3 (Or Higher) Maintenance
Stauff clamps Earth screw Compressor maintenance criteria will render the guarantee conditions for the HVAC unit nul and void, and the manufacturer, Danfoss * BPHE = Brazed plate heat exchanger will no longer be held responsible. 16.6 - Air heat exchanger We recommend, that fi... -
Page 30: Water Heat Exchanger Maintenance
Level 2 16.8 - Refrigerant volume The two cleaning products can be used for any of the following coil fi nishes: Cu/Cu, Cu/Al, Cu/Al with Polual, The unit must be operated in cooling mode to fi nd out, if the Blygold and/or Heresite protection. -
Page 31: StartUp Checklist For Ar05 Heat Pumps Use For Job File
17 STARTUP CHECKLIST FOR AR05 HEAT PUMPS USE FOR JOB FILE Preliminary information Job name: ................................................ Location: ................................................Installing contractor: ........................................... Distributor: ..............................................Start-up preformed by: ................Date: ........................Equipment Model AR05: ..................... S/N ........................Compressors Circuit A Circuit B 1. - Page 32 Unit start-up Water pump control has been properly interlocked with the heat pump Oil level is correct Compressor crankcase heaters have been energised for 12 hours Unit has been leak checked (including fi ttings) Locate, repair, and report any refrigerant leaks .....................................................
- Page 33 Carry out the QUICK TEST function (see the AR05 Control manual): Check and register the confi guration of the follwoing parameters: Load sequence selection ....................................... Capacity ramp loading selection ..................................Start-up delay ..........................................Burner section ........................................... Pump control ..........................................Set point reset mode....................................... Night-time capacity setback ....................................
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