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Summary of Contents for Strebel S-ASX-VPD 60
- Page 1 STREBEL S-ASX-VPD 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. 2023-04-01 V1...
- 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 (EED) 2012/27/EU ORIGINAL INSTRUCTIONS The manufacturer disclaims any liability arising from the incorrect use of this manual.
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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 Performance in Heating mode .............................. -
Page 4: General Information
GENERAL INFORMATION General warnings sively by qualified personnel, in compliance with all current and MANUAL AND DOCUMENTATION - This manual provides all applicable safety regulations in accordance with the national the information necessary for a correct installation and for a legislation of the country of installation. -
Page 5: Description
DESCRIPTION Description of components External structure Basement, supporting structure and panels are made of 4-way reverse cycle valve to allow operating mode change galvanized and painted sheet steel to ensure good resistance reversing the refrigerant flow, liquid receiver to compensate the to atmospheric agents. -
Page 6: Identification Code
IDENTIFICATION CODE S-ASX-VPD 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... -
Page 7: Technical Data
TECHNICAL DATA EU reg 811/2013 AVERAGE climate Efficiency MEDIUM temperature application class AVERAGE climate LOW temperature applications AVERAGE climate Seasonal MEDIUM temperature application efficiency AVERAGE climate LOW temperature application 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 PERFORMANCE 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 PERFORMANCE 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 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 62,5 73,0...
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Page 10: Performance In Heating Mode
PERFORMANCE IN HEATING MODE Outdoor air Temperature Water Model outlet °C temperature °C Heating capacity 35,0 38,6 45,6 47,9 49,2 50,5 51,9 60,6 65,1 70,7 80,0 83,8 Power input 25,7 25,7 25,7 25,7 25,7 25,7 25,7 25,7 25,6 25,6 25,5 25,4 (T 10°C) 1,36... - Page 11 PERFORMANCE IN HEATING MODE Outdoor air Temperature Water Model outlet °C temperature °C Heating capacity 46,0 50,7 60,0 63,0 64,7 66,4 68,3 79,7 85,7 93,0 105,0 110,0 Power input 34,4 34,4 34,4 34,4 34,4 34,4 34,4 34,3 34,2 34,2 34,0 34,0 (T 10°C) 1,34...
- Page 12 PERFORMANCE IN HEATING MODE Outdoor air Temperature Water Model outlet °C temperature °C Heating capacity 60,5 66,8 79,0 83,0 85,2 87,4 89,9 105,0 113,0 122,0 Power input 45,4 45,4 45,4 45,4 45,4 45,4 45,3 45,3 45,2 45,1 44,9 44,9 (T 10°C) 1,33 1,47 1,74...
- Page 13 PERFORMANCE 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...
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Page 14: Heating And Cooling Performances - Parametric Curves
HEATING & COOLING PERFORMANCES HEATING PERFORMANCE COOLING PERFORMANCE Nominal reference conditions : The graphs provide the corrective factors to be applied to heating : source : air in 7°C db 6°C wb the NOMINAL performances in order to obtain the A7W35 plant : water in 30°C out 35°C performances in the selected operating conditions. -
Page 15: Operating Range
OPERATING RANGE The graphs reported below show the operating area inside which the correct working of the unit is guaranteed. The darker area is allowed only with a T of 10°C between water inlet and water outlet on the plant side. HEATING = 10 Inlet air temperature d.b. -
Page 16: Hydraulic Performances
HYDRAULIC PERFORMANCE Plant side pressure drops - unit without options 4000 6000 8000 10000 12000 14000 16000 18000 20000 2000 Flow rate [ l/h ] The graphs are referred to units operating with water at 10°C (density 1000 kg/m 3 ). In the graphs the water filter pressure drops are not taken into consideration. - Page 17 HYDRAULIC PERFORMANCE Plant side available static head - modulating pump (Standard Supply) 4000 6000 8000 10000 12000 14000 16000 18000 20000 2000 Flow rate [ l/h ] Plant side available static head – High-Head pump 2000 4000 6000 8000 10000 12000 14000 16000...
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Page 18: Aeraulic Performances
AERAULIC PERFORMANCE Source side available static head 11000 14000 17000 20000 23000 26000 29000 32000 35000 38000 8000 Air flow rate [ m /h ] Nominal air flow rate 17200 20000 21400 26800 28400 m 3 / Available static head Notes ... -
Page 19: Acoustic Performances
TECHNICAL DATA Acoustic performance Sound power levels [dB] Sound pressure Sound power level by octave bands [Hz] level 1000 2000 4000 8000 dB(A) 84,3 79,9 74,6 74,3 72,0 70,9 67,1 63,9 85,1 80,7 75,4 75,1 72,8 71,7 67,9 64,7 85,6 81,2 75,9 75,6... -
Page 20: Electrical Data
TECHNICAL DATA Electrical data Unit without options Power supply 400V-3N-50Hz 400V-3N-50Hz 400V-3N-50Hz 400V-3N-50Hz 400V-3N-50Hz 55,8 64,8 76,6 84,6 92,0 Maximum total current input 34,1 39,5 43,7 49,2 54,2 Maximum total power input Maximum total start current Maximum total start current with soft starter (option) Modulating pump (Standard Supply) Power supply... -
Page 21: Receiving And Positioning
RECEIVING & 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 22: Connections
CONNECTIONS Hydraulic connections To design properly the hydraulic system, respect the local Reference values for the system water safety regulations in force. The characteristics of the water used in the system must comply The hydraulic circuit (on the plant side) must be equipped with with the values indicated in the table. -
Page 23: Electrical Connections
CONNECTIONS Electrical connections 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 24: Aeraulic Connections
CONNECTIONS Aeraulic connections It is necessary to guarantee a proper air circulation through the coil of the unit with ducts on the air inlet and outlet. 2230 2230 2230 2980 2980 It is recommended to avoid narrowing near the unit air inlet in 1080 1080 1080 1080 1080 order to guarantee a uniform distribution of the air flow on the Lout 2150 2150 2150 2900 2900... -
Page 25: 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 26: 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 27: Temperature Sensors
CONTROL SYSTEM Temperature sensors Outdoor air sensor Each unit can be equipped with temperature sensors to be placed outside the unit to monitor the temperature of the various points of the system necessary to enable the Each unit is supplied with an outdoor air temperature sensor that management of these components. -
Page 28: 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 29: 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 It allows to force the activation of the controller outputs and... -
Page 30: Main Functions
CONTROL SYSTEM Heating and cooling Main functions 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 31 CONTROL SYSTEM COOLING Supplementary source The temperature set point of the water to be sent to the cooling circuit terminals is calculated as a function of the outdoor air temperature through a parameterizable climatic curve. The heat pump controller can manage the integration of a The climatic curve is defined by two parameters : supplementary heat generator (boiler) for both heating and set point at 25°C (par 1208) : defines the water set point at...
- Page 32 CONTROL SYSTEM It is possible to manage the anti-legionella function to Domestic hot water periodically perform heating cycles of the domestic hot water storage tank up to a higher temperature than the nominal set point. The heat pump controller can manage domestic hot water Before enabling this function, it is recommended to check that production.
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Page 33: Alarms
CONTROL SYSTEM Alarms Alarms log When an alarm is active the alarm symbol appears on the status To see the Alarm log, enter the “Fault” menu (parameters bar. The details of the alarm are visible in the INFO menu. 6800- 6819). The controller stores the last 10 events. The last event is stored deleting the oldest one. -
Page 34: 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 35 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...
- Page 36 CONTROL SYSTEM Inputs and outputs: EX10 EX11 QX10 BX10 QX11 BX11 QX12 BX12 BX13 QX13 BX14 Component factory wired Component to be wired...
- Page 37 CONTROL SYSTEM QX21 UX21 UX22 QX22 BX21 BX22 QX23 GX21 FX23 EX21 WX21 Component factory wired Component to be wired...
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Page 38: Inputs And Outputs
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... -
Page 39: Operating Diagram
OPERATING DIAGRAM Compressor Shut off valve User side heat exchanger Filter Source side heat exchanger Economizer heat exchanger Pump (Supplied as standard) Liquid receiver High pressure switch Expansion valve Differential pressure switch Cycle reversing valve Pressure intake Non return valve Pressure sensor Temperature sensor... -
Page 40: 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 41 The following setup example is for a 2 x S-ASX-VPD 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 42 CASCADE MANAGEMENT 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 43: Maintenance
MAINTENANCE IMPORTANT Fans BEFORE CARRYING OUT MAINTENANCE OR CLEANING OPERATIONS MAKE SURE THE UNIT POWER SUPPLY IS Verify that the fans are well fixed to the protective grilles and to DISCONNECTED. ORDINARY EXTRAORDINARY the structure of the unit. Check any unbalance of the fans MAINTENANCE OPERATION MUST BE CARRIED OUT BY pointed out by anomalous vibrations and noise. -
Page 44: 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 contact personnel trained to operate on this type of units and provided qualified personnel. with the necessary protection equipment. - Page 45 SAFETY Residual risk Precautions ELECTRIC CONNECTIONS Verify that the installation is carried out by qualified technical The connection of the unit to the electrical network personnel, respecting all current and applicable safety carried out incorrectly may result in electric shocks, regulations in accordance with the national legislation of the electric burns, intoxication, fires.
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Page 46: Refrigerant Safety Card
REFRIGERANT SAFETY CARD IDENTIFICATION OF THE SUBSTANCE/MIXTURE tempt to repair or modify container valves or safety relief devices. Damaged valves should be reported immediately to the supplier. Keep container valve outlets clean Product R 410 A Relevant identified uses Industrial and professional use. and free from contaminants particularly oil and water. - Page 47 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) :...
- Page 48 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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