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Related Manuals for Strebel S-ASX.21 60
Summary of Contents for Strebel S-ASX.21 60
- Page 1 STREBEL S-ASX.21 Air Source Heat Pump Models – 60 – 70 – 80 – 90 –100 Installation, Operating & Maintenance Manual Please read and understand before commencing installation and leave the manual with the customer for future reference. 2022-03- 01 V2...
- Page 2 DECLARATION OF CONFIRMITY The manufacturer declares that the present equipment complies with the requirements of the following directives: Machinery directive (MD) 2006/42/EC Pressure equipment directive (PED) 2014/68/EU Electromagnetic compatibility directive (EMC) 2014/30/EU Low voltage directive (LVD) 2014/35/EU Energy efficiency directive ...
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Page 3: Table Of Contents
TABLE OF CONTENTS General information ............................4 General warnings ............................4 Unit data plate ............................... 4 Description ................................5 Description of components ........................... 5 Options ................................5 Identification code .............................. 6 Technical data ..............................7 Nominal performances ..........................8 Performances in Heating Mode ........................10 Performances in Cooling Mode ........................ -
Page 4: General Information
GENERAL INFORMATION GENERAL WARNING MANUAL AND DOCUMENTATION - This manual provides all the exclusively by qualified personnel, in compliance with all current information necessary for a correct installation and for a and applicable safety regulations in accordance with the national correct use and maintenance of the equipment. -
Page 5: Description
DESCRIPTION DESCRIPTION OF COMPONENTS External structure impurity and moisture residuals that could be present in the circuit, high pressure switch and pressure sensors in order to assure the compressor to operate inside the permitted limits, 4-way reverse cycle valve to allow operating mode change reversing the Basement, supporting structure and panels are made of refrigerant flow, liquid receiver to compensate the different galvanised and painted sheet steel to ensure good resistance to... -
Page 6: Identification Code
IDENTIFICATION CODES S-ASX.21 60 R Product range Model Operating mode Heating and cooling (Reversible on the refrigerant side) Number of compressors Type of compressors Scroll compressors - Fixed speed Power supply 230V - 1 - 50Hz 400V - 3N - 50Hz 400V - 3 - 50Hz Acoustic setting up Base version... -
Page 7: Technical Data
TECHNICAL DATA EU reg 811/2013 AVERAGE climate MEDIUM temperature application Efficiency class AVERAGE climate LOW temperature application AVERAGE climate Seasonal MEDIUM temperature application efficiency AVERAGE climate LOW temperature applications AVERAGE climate 3,52 3,49 3,47 3,48 3,46 MEDIUM temperature application SCOP AVERAGE climate 4,41 4,37... -
Page 8: Nominal Performances
NOMINAL PERFORMANCES HEATING Heating capacity 57,2 67,3 75,1 84,7 99,0 Power input 12,3 14,6 16,3 18,4 21,6 4,65 4,61 4,61 4,60 4,58 Plant side water flow rate 9854 11613 12964 14606 17068 Plant side pressure drops Heating capacity 57,9 68,1 76,0 85,7 Power input... - Page 9 NOMINAL PERFORMANCES HEATING Heating capacity 41,2 48,5 54,1 61,0 71,3 Power input 12,3 14,6 16,4 18,4 21,7 -7 35 3,35 3,32 3,30 3,32 3,29 Plant side water flow rate 7106 8375 9349 10533 12309 Plant side pressure drops Heating capacity 42,2 49,7 55,4...
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Page 10: Performances In Heating Mode
PERFORMANCES IN HEATING MODE Outdoor air temperature Water Model outlet °C temperature °C Heating capacity 34,1 37,8 44,9 47,2 48,5 49,8 51,2 59,9 64,5 70,1 79,5 83,3 Power input 25,4 25,5 25,5 25,5 25,5 25,5 25,5 25,5 25,5 25,5 25,5 25,5 1,34 1,48... - Page 11 PERFORMANCES IN HEATING MODE Outdoor air temperature Water outlet Model temperature °C °C Heating capacity 44,9 49,7 59,0 62,0 63,7 65,4 67,4 78,8 84,8 92,1 104,0 109,0 Power input 34,0 34,1 34,1 34,1 34,1 34,1 34,0 34,0 34,0 34,0 33,9 33,9 1,32 1,46...
- Page 12 PERFORMANCES IN HEATING MODE Outdoor air temperature Water Model outlet °C temperature °C Heating capacity 59,1 65,4 77,7 81,7 83,9 86,2 88,7 104,0 112,0 121,0 Power input 44,9 45,0 45,0 45,0 45,0 45,0 44,9 45,0 44,9 44,9 44,8 44,8 1,32 1,45 1,73 1,82...
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Page 13: Performances In Cooling Mode
PERFORMANCES IN COOLING MODE Outdoor air temperature Water Model outlet °C temperature °C Cooling capacity 68,3 67,0 65,1 62,5 59,2 55,0 49,9 43,7 Power input 11,9 12,5 13,3 14,2 15,3 16,6 18,1 19,7 5,74 5,36 4,89 4,40 3,87 3,31 2,76 2,22 Cooling capacity 61,5... -
Page 14: Heating And Cooling Performances - Parametric Curves
HEATING & COOLING PERFORMANCES – PARAMETRIC CURVES HEATING PERFORMANCE COOLING PERFORMANCE The graphs provide the corrective factors to be applied to the NOMINAL performances in order to obtain the performances in the selected operating conditions. The curves are parameterized according to the outlet water temperature on the plant side with a ▲T equal to 5°C. Nominal reference conditions: heating: source: air in 7°C db 6°C wb... -
Page 15: Operating Range
OPERATING RANGE The graphs reported below show the operating area inside which the correct working of the unit is guaranteed. COOLING Inlet air temperature d.b. [°C] Temperature difference between water inlet and outlet Plant side Source side °C Maximum value ∆T max °C Minimum value... -
Page 16: Hydraulic Performances
HYDRAULIC PERFORMANCES Plant side available static head - Modulating Pump (Standard Supply) Plant side available static head – High-Head Pump (Optional) -
Page 17: Acoustic Performances
ACOUSTIC PERFORMANCE & DIMENSIONS Sound power levels [dB] Sound pressure Sound power level by octave bands [Hz] level 1000 2000 4000 8000 dB(A) 81,4 79,3 77,6 73,9 70,4 66,2 60,5 53,0 81,9 79,8 78,1 74,4 70,9 66,7 61,0 53,5 82,3 80,2 78,5 74,8... -
Page 18: Electrical Data
ELECTRICAL DATA Unit without options Power supply 400V - 3N - 50Hz 400V - 3N - 50Hz 400V - 3N - 50Hz 400V - 3N - 50Hz 400V - 3N - 50Hz 47,7 56,7 68,5 73,7 81,1 Maximum total current input 29,0 34,4 38,6... -
Page 19: Receiving And Positioning
RECEIVING AND POSITIONING RECEIVING POSITIONING Check on receiving Installation site As soon as the unit is received verify accurately the Verify that the support surface can bear the weight of the correspondence of the load to what was ordered to make sure selected unit and that it is perfectly horizontal. -
Page 20: Connections
CONNECTIONS HYDRAULIC CONNECTION Condensate drain All the units are equipped with a drain for the condensate generated To design properly the hydraulic system, respect the local safety by the finned coil during normal heating operation. regulations in force. The connection of the drain is mandatory, to avoid the accumulation The hydraulic circuit (on the plant side) must be equipped of water around the unit and the possible formation of ice sheets. -
Page 21: Electrical Connections
ELECTRICAL CONNECTION The electrical wirings must be carried out by qualified personnel Upstream protection according to the regulations in force at the installation time in the country of installation. An automatic switch suitable for ensuring protection against overcurrent and indirect contacts must be installed upstream Before starting any work on the electrical each power supply line. -
Page 22: Start Up
START UP - Calculate the percentage unbalance value: PRELIMINARY CHECKS =▲Vmax / ▲average x 100 = =7 / 394 x 100 = 1,78 % < 2 % The following operations must be carried out only by properly trained personnel. To make the contractual warranty effective, UNIT START UP start-up must be carried out by authorized service centres. -
Page 23: Control System
CONTROL SYSTEM Status bar Control knob Flow temp 35,8°C Navigation menu Return temp 30,5°C Outside temp -3,2°C DHW temp 49,5°C System Automatic Working area USER INTERFACE The unit can be managed by means of the remote user interface, equipped with a “push and roll” control knob that allows to navigate inside the different menus and to visualize and modify all the parameters. -
Page 24: Temperature Sensors
CONTROL SYSTEM TEMPERATURE SENSOR OUTDOOR AIR SENSOR Each unit can be equipped with temperature sensors to be Each unit is supplied with an outdoor air temperature sensor that placed outside the unit to monitor the temperature of the must be installed outdoor and connected to the heat pump various points of the system necessary to enable the controller (input B9). -
Page 25: Navigation Menu
CONTROL SYSTEM NAVIGATION MENU The navigation menu consists of a series of icons arranged MENU ‘’EXPERT’’ vertically on the left side of the display. Navigation within the menu is done by moving the cursor, Besides the “End user” menu, an “Expert” menu is available represented by a frame that wraps the icon above the selected which allows access to a greater number of information and element, by turning the control knob. -
Page 26: Complete Parameter List
CONTROL SYSTEM Commissioning wizard MENU ‘’EXPERT’’ DIAGNOSTICS Provides a guide to the user interface configuration and to the system configuration (NOT necessary). The following functions are available in the “Diagnostics” menu: Refresh operator unit Allows to update the main screens of the end user menu to Test input/output adapt them to the new configuration set in the parameter’s It allows to force the activation of the controller outputs and... -
Page 27: Main Functions
CONTROL SYSTEM HEATING AND MAIN FUNCTION COOLING CIRCUITS Management by means of digital inputs The heat pump controller can manage heating and cooling distribution circuits with the possibility to define: The unit can be managed by means of digital inputs: Climatic curves VK1: Heating request (fixed set point) daily and weekly timetables... - Page 28 CONTROL SYSTEM COOLING SUPPLEMENTARY SOURCE The temperature set point of the water to be sent to the cooling The heat pump controller can manage the integration of a circuit terminals is calculated as a function of the outdoor air supplementary heat generator (boiler) for both heating and temperature through a parameterizable climatic curve.
- Page 29 CONTROL SYSTEM DOMESTIC HOT WATER The heat pump controller can manage domestic hot water It is possible to manage the anti-legionella function to production. To enable this function, a temperature sensor (B3) periodically perform heating cycles of the domestic hot water must be placed on the domestic hot water storage tank and storage tank up to a higher temperature than the nominal set connected to the unit controller.
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Page 30: Alarms
CONTROL SYSTEM ALARMS LOG When an alarm is active the alarm symbol appears on the status To see the Alarm log, enter the “Fault” menu (parameters 6800- bar. The details of the alarm are visible in the INFO menu. 6819). The controller stores the last 10 events. The last event is stored deleting the oldest one. -
Page 31: Alarms Table
CONTROL SYSTEM ALARMS TABLE Unit Code Description Reset Input Solution locked Outdoor air temperature sensor Verify sensor connection User side heat pump outlet temperature sensor Verify sensor connection Source side heat pump inlet temperature sensor Verify sensor connection Compressor 1 outlet temperature sensor Verify sensor connection Compressor 2 outlet temperature sensor Verify sensor connection... - Page 32 CONTROL SYSTEM Unit Code Description Reset Input Solution locked Verify coil status and, if frozen, force a defrost cycle (parameter 7153) Defrost alarm Verify refrigerant leaks with a refrigerant leak detector DHW charging temperature sensor Verify sensor connection BX sensors with the same function Two inputs are configured in the same way Verify BX inputs configuration BX sensors with the same function on extension modules...
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Page 33: Inputs And Outputs
CONTROL SYSTEM INPUTS AND OUTPUTS... - Page 34 CONTROL SYSTEM...
- Page 35 CONTROL SYSTEM INPUTS AND OUTPUTS TABLE Description Features To be wired Source side air inlet temperature Coil temperature User side water inlet temperature User side water outlet temperature Compressor 1 outlet temperature Compressor 2 outlet temperature Outdoor air temperature BX10 BX11 BX12 BX13...
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Page 36: Operating Diagram
OPEARTING DIAGRAM Optional Compressor Shut off valve User side heat exchanger Filter Source side heat exchanger Desuperheater heat exchanger Pump Economizer heat exchanger High pressure stat Liquid receiver Differential pressure stat Expansion valve Pressure intake Cycle reversing valve Pressure sensor Non return valve Temperature sensor... -
Page 37: Cascade Management
CASCADE MANAGEMENT If multiple heat pumps are installed in a system, then STREBEL recommends installing them utilising the built-in cascade management system in order to optimise the efficiency of the heat pumps along with the complete system. When using the integrated cascade control, a maximum of 16 heat pumps can be controlled. - Page 38 The following setup example is for a 2 x S-ASX.21 60-100 cascade setup: Drawing Part Description Number Outside Air Temperature Sensor Common Flow Temperature Sensor DHW Three Way Valve DHW Tank Temperature Sensor Thermal Store / Buffer Vessel Flow Temperature...
- Page 39 SLAVE UNIT WIRING Apart from the communication wire between terminals MB & DB as shown earlier, the only optional external wiring is to install a second operator unit. Any operator unit installed within a slave heat pump is for information only. Such as showing current flow temperatures, return temperatures and any fault codes with this slave heat pump.
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Page 40: Maintenance
MAINTENANCE IMPORTANT Fans BEFORE CARRYING OUT MAINTENANCE OR CLEANING Verify that the fans are well fixed to the protective grilles and to OPERATIONS MAKE SURE THE UNIT POWER SUPPLY IS the structure of the unit. Check any unbalance of the fans DISCONNECTED. -
Page 41: Safety
SAFETY Accessing the unit Unit disposal The access to the unit must be granted exclusively to qualified To dispose of the unit, it is necessary to personnel trained to operate on this type of units and provided contact qualified personnel. with the necessary protection equipment. - Page 42 SAFETY Residual risk Precautions ELECTRIC CONNECTIONS Verify that the installation is carried out by qualified technical personnel, respecting all current and applicable safety regulations in accordance with the national legislation of the country of The connection of the unit to the electrical network installation and the indications provided in this manual for the carried out incorrectly may result in electric shocks, electrical connection.
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Page 43: Refrigerant Safety Card
REFRIGERANT SAFETY CARD IDENTIFICATION OF THE SUBSTANCE/MIXTURE tempt to repair or modify container valves or safety relief devices. Damaged valves Product R 410 A should be reported immediately to the supplier. Keep container valve outlets clean and free from contaminants particularly oil and water. Replace valve outlet caps Relevant identified uses Industrial and professional use. - Page 44 REFRIGERANT SAFETY CARD Evaporation rate (ether=1): Not applicable for gas mixtures. Class: Flammability range: Non-flammable. Classification code: Vapour pressure [20°C]: No reliable data available. Hazard identification number: Vapour pressure [50°C]: No reliable data available. Tunnel Restriction: C/E - Tank carriage: Passage forbidden Relative density, gas (air=1): Heavier than air.
- Page 45 NOTES...
- Page 46 STREBEL LTD RESERVE THE RIGHT TO CHANGE ANY SPECIFICATIONS OF THIS HEAT PUMP RANGE WITHOUT NOTICE Further information on our complete product range is available from our website. CAST IRON – CONDENSING – STEEL SHELL – WATER HEATERS – RENEWABLES...
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