Strebel S-ASX 30 User manual

STREBEL
S-ASX Air Source
Heat Pump
Models 30 –35 –40 –45 - 50
Installation, Operating & Maintenance Manual
Please read and understand before commencing installation and leave the manual with the customer for future reference.
2021-06-01 v1

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TABLE OF CONTENTS
INTRODUCTION................................................................................................................................................6
1.1 SAFETY GUIDELINES ........................................................................................................................6
1.2 DECLARATION OF CONFORMITY ........................................................................................................7
1.3 DATA PLATE ....................................................................................................................................7
2GENERAL INFORMATION.........................................................................................................................8
2.1 UNIT DESCRIPTION...........................................................................................................................8
2.2 DESCRIPTION OF COMPONENTS........................................................................................................8
3TECHNICAL SPECIFICATIONS...............................................................................................................10
3.1 PERFORMANCE DATA.....................................................................................................................11
3.1.1 Flow Temperature of 35c ..................................................................................................11
3.1.2 Flow Temperature of 45c ..................................................................................................12
3.1.3 Flow Temperature of 55c ..................................................................................................13
3.1.4 Flow Temperature of 65c ..................................................................................................14
3.2 ERPSPECIFICATION DATASHEET....................................................................................................15
4DIMENSIONS & CLEARANCES ..............................................................................................................16
4.1 DIMENSIONS..................................................................................................................................16
4.1.1 Side Air Suction & Side Air Expulsion –Standard Supply................................................16
4.1.2 Side Air Suction & Frontal Air Expulsion –Additional Option ...........................................16
4.2 REQUIRED CLEARANCES................................................................................................................17
4.2.1 Side Air Suction & Side Air Expulsion –Standard Supply................................................17
4.2.2 Side Air Suction & Frontal Air Expulsion –Additional Option ...........................................17
5STANDARD SUPPLY, ADDITIONAL OPTIONS & ACCESSORIES.......................................................18
5.1 STANDARD SUPPLY........................................................................................................................18
5.2 ADDITIONAL OPTIONS.....................................................................................................................19
5.2.1 System Side Interal Pump Setup Example –Modulating or High Head...........................19
5.2.2 Internal 3 Way Valve Example –DHW Production...........................................................19
5.3 ACCESSORIES................................................................................................................................19
6WEIGHTS ..................................................................................................................................................20
6.1 S-ASX 30 –50: STANDARD SUPPLY...............................................................................................20
6.1.1 Transport Weight...............................................................................................................20
6.1.2 Installed –Dry Weight .......................................................................................................20
6.1.3 Installed –Filled Weight ....................................................................................................20
6.2 S-ASX 30 –50: DHW 3WAY VALVE..............................................................................................20
7NOISE LEVELS.........................................................................................................................................20
8PRESSURE DROP....................................................................................................................................21
8.1 PRESSURE DROP THROUGH HEAT PUMP PLATE HEAT EXCHANGER.................................................21
8.2 PRESSURE DROP THROUGH DHW 3PORT VALVE...........................................................................21
9SYSTEM PUMP SELECTION & OPERATING LIMITS............................................................................22
9.1 SYSTEM PUMP SELECTION.............................................................................................................22
9.1.1 Modulating Pump –Standard Supply................................................................................22
9.1.2 High Head Pump –Additional Option ...............................................................................22
9.2 OPERATING LIMITS –DELTA T........................................................................................................23
10 CORRECTIVE FACTORS.........................................................................................................................24
10.1 HEATING PERFORMANCES..............................................................................................................24
11 TAKING DELIVERY OF THE HEAT PUMP .............................................................................................25
11.1 RECEIVING ....................................................................................................................................25
11.1.1 In Case of Damage ...........................................................................................................25
11.2 SAFETY INSTRUCTIONS ..................................................................................................................25
11.3 HANDLING .....................................................................................................................................25
11.4 STORING .......................................................................................................................................25
11.5 REMOVAL OF PACKAGING...............................................................................................................25
12 POSTIONING FOR INSTALLATION ........................................................................................................26
12.1 INDOOR INSTALLATION....................................................................................................................26
12.2 OUTDOOR INSTALLATION................................................................................................................26
12.3 PLINTH /BASE ...............................................................................................................................27
12.4 WITHIN ENCLOSURES.....................................................................................................................27
13 HYDRAULIC INSTALLATION ..................................................................................................................28
13.1 GENERAL.......................................................................................................................................28

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13.2 HYDRAULIC CONNECTIONS.............................................................................................................28
13.3 CONDENSATE DRAIN CONNECTION.................................................................................................29
13.4 GLYCOL VOLUME –FREEZING TEMPERATURES ...............................................................................29
13.5 MINIMUM WATER CONTENT –PRIMARY HEATING CIRCUIT ...............................................................29
14 ELECTRICAL INSTALLATION.................................................................................................................30
14.1 GENERAL.......................................................................................................................................30
14.2 ELECTRICAL DATA..........................................................................................................................30
14.2.1 Heat Pump Excluding System Pump Options...................................................................30
14.2.2 System Pump –Modulating ..............................................................................................30
14.2.3 System Pump –High Head (Additional Option)................................................................30
14.3 MAIN CONTROLLER –SIEMENS RVS21.826 WITH AVS55.199........................................................31
14.4 EXTENSION MODULES –SIEMENS AVS75.370................................................................................31
14.5 SENSOR VALUES............................................................................................................................32
14.5.1 Temperature Sensor 10K..................................................................................................32
14.5.2 Outside Air Temperature Sensor.......................................................................................32
14.6 INPUTS AND OUTPUTS....................................................................................................................33
14.6.1 RVS21.826 Main Controller - Inputs .................................................................................33
14.6.2 RVS21.826 Main Controller - Outputs...............................................................................33
14.6.3 AVS55.199 –Inputs ..........................................................................................................33
14.6.4 AVS55.199 –Outputs........................................................................................................33
14.6.5 AVS75.370 (MOD3) –Inputs.............................................................................................34
14.6.6 AVS75.370 (MOD3) –Outputs..........................................................................................34
14.6.7 AVS75.370 (MOD1) –Inputs.............................................................................................34
14.6.8 AVS75.370 (MOD1) –Outputs..........................................................................................34
15 BASIC SETUP EXAMPLES......................................................................................................................35
15.1 1X S-ASX ASHP TO 1X THERMAL STORE.....................................................................................35
15.2 1X S-ASX ASHP TO 1X THERMAL STORE &1X INDIRECT DHW CYLINDER....................................35
15.3 2X S-ASX IN CASCADE TO 1X THERMAL STORE &1X INDIRECT DHW CYLINDER............................36
16 START UP.................................................................................................................................................37
16.1 PRELIMINARY CHECKS BEFORE TURNING ON..................................................................................37
16.2 TURNING ON..................................................................................................................................37
17 USER INTERFACE / REMOTE CONTROLLER.......................................................................................38
17.1 REMOTE CONTROL DESIGN............................................................................................................38
17.1.1 Front View .........................................................................................................................38
17.1.2 Rear View..........................................................................................................................38
17.1.3 Bottom View ......................................................................................................................38
17.2 TECHNICAL SPECIFICATIONS...........................................................................................................39
17.3 DIMENSIONS..................................................................................................................................40
17.4 INSTALLATION OF THE USER INTERFACE /REMOTE CONTROLLER .....................................................40
17.4.1 Removing the Mounting Plate From The Controller..........................................................40
17.4.2 Fitting The Mounting Plate To A Surface ..........................................................................41
17.4.3 User Interface / Room Controller Wiring ...........................................................................42
17.4.4 Uninstall User Interface / Room Controller........................................................................43
17.5 BASIC INFORMATION ......................................................................................................................44
17.5.1 Operating Elements & Display ..........................................................................................44
17.5.2 Display in Standby.............................................................................................................44
17.5.3 Navigating & Setting Using the Control Knob ...................................................................45
17.5.4Symbol Meanings..............................................................................................................46
17.5.5 Basic Menu Structure........................................................................................................47
17.6 USER OPERATION..........................................................................................................................48
17.6.1 Home Screen ....................................................................................................................48
17.7 COMMISSIONING THE CONTROLLER USING THE WIZARD...................................................................49
17.7.1 Time of Day and Date .......................................................................................................50
17.7.2 Operator Section ...............................................................................................................51
17.8 OPERATE SERVICE /SETTING PAGES..............................................................................................52
17.8.1 Regional Settings..............................................................................................................52
17.8.2 Special Operations / Settings............................................................................................53
17.8.3 Expert Level - OEM...........................................................................................................53
18 ON / OFF DEMAND SIGNAL FOR HEAT PUMP.....................................................................................57
18.1 VOLT FREE OPEN /CLOSE .............................................................................................................57
18.1.1 Fixed Setpoint ...................................................................................................................57
18.1.2 Climatic Curves Based on Outdoor Air Temperature........................................................58
18.2 ANALOGUE INPUT 0-10V.................................................................................................................58

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19 DOMESTIC HOT WATER MANAGEMENT..............................................................................................59
20 CASCADE CONTROL ..............................................................................................................................60
20.1 CASCADE WIRING..........................................................................................................................60
20.1.1 Cascading S-ASX 30-50 Heat Pumps Together...............................................................60
20.1.2 Master Unit Wiring.............................................................................................................61
20.1.3 Slave Unit Wiring...............................................................................................................61
20.2 CASCADE PARAMETERS .................................................................................................................62
20.2.1 Lead Strategy (3510).........................................................................................................62
20.2.2 Output Band Min & Max (3511 & 3512) ............................................................................62
20.2.3 Stage Sequence (3514) ....................................................................................................62
20.2.4 Max Sources Force Charge (3516)...................................................................................62
20.2.5 Max Source Force Charge OT (3517)...............................................................................63
20.2.6 Number Source Defrost Allowed (3518) ...........................................................................63
20.2.7 Release Integral Source Sequence (3530).......................................................................63
20.2.8 Reset Integral Source Sequence (3531)...........................................................................63
20.2.9 Neutral Zone Heating Cascade (ACS)..............................................................................63
20.2.10 Switch on Delay (3533).....................................................................................................63
20.2.11 Substitute Common Flow Temperature (3538).................................................................64
20.2.12 Auto Source Sequence Change Over (3540) ...................................................................64
20.2.13 Auto Source Sequence Exclusion (3541) .........................................................................64
20.2.14 Leading Source (3544)......................................................................................................64
20.2.15 Temperature Differential Min (3590) –Only if a Common Return Sensor is Fitted ..........64
21 FAULT & RUN INDICATION.....................................................................................................................65
21.1 ADDRESSING AVAILABLE USER OUTPUTS........................................................................................65
21.1.1 Heat Pump Fault (Lock Out) Indication.............................................................................65
21.1.2 Heat Pump Running (In Heating) Indication......................................................................65
21.1.3 Heat Pump Running (In DHW) Indication .........................................................................65
22 S-ASX Heat Pump Fault / Alarm .............................................................................................................65
22.1 FAULT /ALARM ACTIVATION &RESET .............................................................................................65
22.2 FAULT /ALARM HISTORY................................................................................................................65
22.3 FAULT /ALARM CODE TABLE..........................................................................................................66
23 MAINTENANCE ........................................................................................................................................69
23.1 ONSITE REGULAR MAINTENANCE....................................................................................................69
23.1.1 Structure............................................................................................................................69
23.1.2 Hydraulic Plant ..................................................................................................................69
23.1.3 Electrical Plant...................................................................................................................69
23.1.4 Fans...................................................................................................................................69
23.1.5 Finned Coil ........................................................................................................................69
23.1.6 Finned Coil Condensate Drainage....................................................................................69
23.2 ANNUAL MAINTENANCE /SERVICE VISIT..........................................................................................69
24 SAFETY AND POLLUTION......................................................................................................................70
24.1 ACCESSING THE HEAT PUMP..........................................................................................................70
24.2 RESIDUAL RISKS............................................................................................................................70
24.3 POLLUTION....................................................................................................................................70
24.4 REFRIGERANT SAFETY CARD..........................................................................................................70
24.4.1 Supplier Company and Product Identification...................................................................70
24.4.2 Composition / Information on Ingredients .........................................................................70
24.4.3 Identification of Hazards....................................................................................................70
24.4.4 First Aid Measures ............................................................................................................70
24.4.5 Fire Prevention Measures.................................................................................................71
24.4.6 Measures Against Accidental Spilling of the Product........................................................71
24.4.7 Handling and Storage........................................................................................................71
24.4.8 Control of Exposure / Personal Protection........................................................................71
24.4.9 Chemical Physical Properties............................................................................................71
24.4.10 Stability and Reactivity ......................................................................................................71
24.4.11 Toxicological Information...................................................................................................71
24.4.12 Ecological Information.......................................................................................................72
24.4.13 Consideration on Disposal ................................................................................................72
24.4.14 Information for Transport...................................................................................................72
24.4.15 Information on Regulations ...............................................................................................72
24.4.16 Other Information ..............................................................................................................73

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INTRODUCTION
This manual is written for:
▪The Installer.
▪System Design Engineer.
▪The Service Engineer.
▪The User.
The following symbol is used in this manual:
Warning: Important information concerning the safety of persons and/or the appliance.
Strebel Ltd is not accountable for any damage caused by incorrect following the mounting instructions.
For service and repair purposes use only original Strebel spare parts.
All documentation produced by the manufacturer is subject to copyright law.
1.1 Safety Guidelines
Before carrying out any installation work, please carefully read all the information contained in this manual,
which describes the procedures necessary for correct installation and use of the appliance.
This manual and the wiring diagram supplied with the appliance must be kept in a dry suitable place for possible future
consultation by engineers or users. This manual provides information on installation, operating and
maintenance of the appliance. We suggest that you keep a copy of these instructions near the appliance.
These instructions together with those in any supplemental instruction booklet cover the basic principles to ensure the
satisfactory installation of the appliance, although detail may need slight modification to suit particular local site
conditions.
Follow carefully the instructions contained in the manual and respect the safety regulations in force. The appliance
should be installed by a skilled installer, electrical work carried out by a qualified person, all according to national and
regional standards. Failure to comply with these regulations could deem the warranty invalid.
This appliance must be installed outdoors and connected to a hydronic heating system.
Check the electrical specifications given on the data plate and the wiring diagram before making any electrical
connections.
Deactivate the appliance in case of fault or poor operation. If the appliance requires repair, only contact qualified
companies or engineers approved by the manufacturer and only use original spare parts.
Without written approval of the manufacturer, the internal parts of the appliance may not be changed. When changes
are executed without approval, the appliance certification becomes invalid.
Commissioning, maintenance, and repair must be done by a skilled installer/engineer, according to all applicable
standards and regulations.
The manufacturer declines any responsibility for damage or injury due to non-compliance with the information given
within this manual.
The manufacturer/supplier is not liable for any damage caused by inaccurately following these mounting
instructions. Only original parts may be used when carrying out any repair or service work.
This appliance is not intended for use by persons (including children) with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge, unless they have been given supervision or
instruction concerning use of the appliance by a person responsible for their safety. Children should be
supervised to ensure that they do not play with the appliance.
The relevant British standards for installation, codes of practice or rules in force and in accordance with the
Manufacturer’s instructions.

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The installation must be carried out in accordance with the following regulations plus relevant codes & standards:
- Due consideration must be given to current Health & Safety Legislation while this product is being installed.
- Key Approved Documents to the Building Regulations, in the region of the United Kingdom that this product is
being installed.
- The Local Building Regulations and Local water by-laws, and the Local Authority recommendations.
- Wiring to the appliance must be in accordance with the IEE (BS 7671) Wiring Regulations the Health and Safety
Document No 635 “The Electricity at Work Regulations 1989” and any local regulations that apply.
- CP 342: Part 2, 1994. Code of practice for centralised hot water supply –buildings other than individual
dwellings.
- CIBSE, Guides A, B and C.
Adhere to all regulations that are in force at the time of installation or service.
1.2 Declaration of Conformity
We declare that this appliance complies with the requirements of the following directives:
•Machinery Directive (MD) 2006/42/EC
•Pressure Equipment Device (PED) 2014/68/EC
•Electromagnetic Compatibility Directive (EMC) 2014/30/EU
•Low Voltage Directive (LVD) 2014/35/EU
1.3 Data Plate
Take notice of the reading on the data plate on each appliance as some reading will differ pending the
accessories ordered and fitted on building the unit.
A: Trademark
B: Mode
B1: Code
C: Serial Number
D: N/A
E: Heating Capacity Output kW –Measured at A7 / W35
F: N/A
G: Heating Capacity Input kW –Measured at A7 / W35
H: Reference Standard
I: Power Supply
L: Maximum Absorbed Current
M: Refrigerant Type and Charge Weight
N: Unit Weight
O: Sound Pressure Level at 1 Metre
P: IP Protection Class
Q: Maximum Pressure –High Pressure Side
R: Maximum Pressure –Low Pressure Side
S: PED Certification Body

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2 GENERAL INFORMATION
2.1 Unit Description
This series of air to water S-ASX heat pumps satisfies the heating and domestic hot water production
requirements of installations of small and medium size. The possibility to produce up to 65c temperatures makes
these units particularly suitable to radiators circuits as well as to fan coil and under floor heating circuits. All the units
are suitable for indoor and outdoor installation.
The refrigerant circuit, contained in a box separate from the air flow to simplify the maintenance operations, is
equipped with scroll compressor mounted on damper supports, brazed plate heat exchangers, electronic
expansion valve, reverse cycle valve, centrifugal fan (plug fan), finned coil realized with copper pipes and aluminium
fins. The circuit is protected by high and low pressure switches and flow switches on the plate heat exchanger.
The compressor is equipped with vapour and liquid injection and areplaced on an economized refrigerant circuit with
plate heat exchanger and electronic expansion valve dedicated to the injection.
The plate heat exchanger and all the hydraulic pipes are thermally insulated to avoid condensate generation and
reduces thermal losses.
The plug fans with electronic control of the rotation speed guarantees high efficiencies and low noise in all the
operational conditions and allows to install the unit both outdoors (with protection caps) or indoors (with ducted air inlet
and outlet).
All the units are provided with a phase sequence and correct sequence controller device and with an outdoor
temperature sensor to realize the climatic control. All the units are accurately built and individually tested in the
factory. Only electric and hydraulic connections are required for installation.
2.2 Description of Components
External Structure: Basement, supporting structure and lateral panels are made of galvanized and painted sheet
steel to guarantee good resistance to atmospheric agents. Accessibility to internal parts is possible removing the
frontal and lateral panels. For maintenance also the other panels can be removed.
Refrigerant Circuit: It is contained inside a compartment separated from the air flow to simplify maintenance and
control operations.
The Scroll Compressor (1): Is mounted on damper supports and are protected against over temperatures and
overcurrent’s. It is equipped with an electrical heater, that is activated when thecompressor turnsoff, to keepthe
compressor crankcase oil temperature high enough to prevent migration of the refrigerant during winter stops and to
evaporate any liquid present in the crankcase, in order to prevent possible liquid rushes on starting. The compressor
is equipped with vapour and liquid injection and are placed on an economized refrigerant circuit with plate heat
exchanger and electronic expansion valve dedicated to the injection.
The Plant Side Heat Exchanger (2): Is a brazed stainless steel plate heat exchanger, properly insulated to avoid
condensate generation and to minimize thermal losses and protected by a flow switch that detects lack of water flow.
The Source Side Heat Exchanger (3): Is a finned coil realized with grooved copper pipes and aluminium fins with
waved profile to increase the heat exchange coefficient. A tray is placed under the coil to collect the condensate
generated in heating mode.
The Expansion Device (4): An electronic expansion valve, allows the unit to adjust itself to the different operating
conditions keeping steady for heating.
The Filter Dryer (5): The refrigerant circuit of each unit contains a filter to restrain impurity and moisture residuals that
could be present in the circuit, high and low pressure switches in order to assure the compressor to operate inside the
permitted limits.

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The 4 Way Valve (6): The 4 way valve changes the direction of flow for the defrost cycle.
Liquid Receiver (7): To compensate the different refrigerant charge required in heating and pressure connections
SAE 5/16” – UNF ½” – 20 equipped with pin, gasket and blind nut, as required for the use of R410A refrigerant (they
allow the complete check of the refrigerant circuit: compressor inlet pressure, compressor outlet pressure and
expansion valve upstream pressure). All the pipes on the refrigerant circuit are insulated to avoid condensation
formation and minimise thermal losses.
The Plug Fan (8): Is equipped with a high efficiency electronically commutated (EC) motor and guarantee high
efficiencies in all the operating conditions.
Hydraulic Circuit: All the pipes are thermally insulated to avoid condensate formation and minimise thermal losses.
Thiscircuit is equipped with a modulation circulation pump internal to the casing designed to flow water to the nearest
thermal / buffer store - a high head circulation pump is an additional option and will need to be ordered at the same
time as the S-ASX heat pump is order. This circuit is also equipped with an expansion vessel, safety valve and air
vents.
Electrical Wiring Panel: It contains all the power, control and security components necessary to guarantee the unit to
work properly. The unit is managed by a separate controller to which all the electrical loads and the control devices
are connected. The user interface, to be placed indoor, allows to view and to modify, if necessary, all the parameters
of the unit.

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3 TECHNICAL SPECIFICATIONS
Frame
1
2
Model
30
35
40
45
50
U.M.
Power supply
400 -3N- 50
400 -3N- 50
400 -3N- 50
400 -3N- 50
400 -3N- 50
V-ph-Hz
Refrigerant
Type
R410A
-
Total Volume
9.5
9.5
9.5
11.5
11.5
kg
Compressor
Type
Scroll with vapor injection (EVI)
-
Quantity
1
n°
Power steps
0 - 100
%
Oil charge
3.4
3.4
3.4
3.4
3.4
kg
Plant Side Heat Exchanger
Type
Stainless steel brazed plates
-
Quantity
1
n°
Water volume
4.18
4.18
4.18
5.14
5.14
l
Source Side Heat Exchanger
Type
Finned coil
-
Quantity
1
n°
Frontal surface
1.10
1.10
1.10
1.43
1.43
m2
Fans
Type
Plug fan with high efficiency EC motor
-
Quantity
1
n°
Diameter
630
630
630
630
630
mm
Maximum rotational speed
680
680
680
1200
1200
rpm
Total installed power
0.54
0.54
0.54
2.80
2.80
kW
Plant Side Hydraulic Circuit
Expansion vessel volume
10
10
10
10
10
l
Safety valve set point
3
bar
Plant Pump –High Efficiency Modulating Pump (Standard Supply)
Type
Inverter glandless pump
-
Quantity
1
n°
Installed power
0.31
0.31
0.31
0.31
0.31
kW
Plant Pump - High Head (Option)
Type
Centrifugal pump
-
Quantity
1
n°
Installed power
1.2
1.2
1.2
1.6
1.6
kW

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3.1 Performance Data
3.1.1 FLOW TEMPERATURE OF 35C
Frame
1
2
Model
30
35
40
45
50
U.M.
Power supply
400 -3N- 50
400 -3N- 50
400 -3N- 50
400 -3N- 50
400 -3N- 50
V-ph-Hz
IP
Heating A7W35 (Source: Air in 7°C d.b. 6°C w.b. / Plant: Water in 30°C out 35°C)
Heating capacity
29.2
34.4
38.6
44.1
50.4
kW
Power input
6.32
7.48
8.40
9.59
11.0
kW
COP
4.62
4.60
4.60
4.60
4.58
-
Water flow rate plant side
5039
5923
6650
7602
8676
l/h
Pressure drops plant side
21
28
35
31
40
kPa
Heating A2W35 (Source: Air in 2°C d.b. 1°C w.b. / Plant: Water in 30°C out 35°C)
Heating capacity
24.7
29.0
32.6
37.2
42.5
kW
Power input
6.32
7.46
8.36
9.55
11.0
kW
COP
3.91
3.89
3.90
3.90
3.86
-
Water flow rate plant side
4260
5005
5628
6425
7325
l/h
Pressure drops plant side
15
21
26
22
29
kPa
Heating A-4W35 (Source: Air in -4°C d.b. -5°C w.b. / Plant: Water in 30°C out 35°C)
Heating capacity
22.4
26.5
29.7
33.9
38.8
kW
Power input
6.34
7.47
8.37
9.57
11.0
kW
COP
3.53
3.55
3.55
3.54
3.53
-
Water flow rate plant side
3879
4572
5126
5853
6685
l/h
Pressure drops plant side
13
17
22
19
24
kPa
Heating A-7W35 (Source: Air in -7°C d.b. -8°C w.b. / Plant: Water in 30°C out 35°C)
Heating capacity
21.0
24.8
27.8
31.7
36.2
kW
Power input
6.34
7.47
8.37
9.57
10.9
kW
COP
3.31
3.32
3.32
3.31
3.32
-
Water flow rate plant side
3637
4277
4797
5472
6252
l/h
Pressure drops plant side
11
15
19
17
21
kPa
All data declared to EN 14511 –the above values are referred to units without options or accessories.

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3.1.2 FLOW TEMPERATURE OF 45C
Frame
1
2
Model
30
35
40
45
50
U.M.
Power supply
400 -3N- 50
400 -3N- 50
400 -3N- 50
400 -3N- 50
400 -3N- 50
V-ph-Hz
IP
Heating A7W45 (Source: Air in 7°C d.b. 6°C w.b. / Plant: Water in 40°C out 45°C)
Heating capacity
29.6
34.8
39.1
44.6
51.0
kW
Power input
8.07
9.54
10.7
12.2
14.0
kW
COP
3.67
3.65
3.65
3.66
3.64
-
Water flow rate plant side
5127
6013
6761
7716
8811
l/h
Pressure drops plant side
22
29
36
32
41
kPa
Heating A2W45 (Source: Air in 2°C d.b. 1°C w.b. / Plant: Water in 40°C out 45°C)
Heating capacity
25.1
29.5
33.1
37.8
43.2
kW
Power input
8.06
9.52
10.6
12.2
14.0
kW
COP
3.11
3.10
3.12
3.10
3.09
-
Water flow rate plant side
4345
5109
5735
6552
7473
l/h
Pressure drops plant side
16
21
27
23
30
kPa
Heating A-4W45 (Source: Air in -4°C d.b. -5°C w.b. / Plant: Water in 40°C out 45°C)
Heating capacity
22.9
27.0
30.3
34.6
39.6
kW
Power input
8.08
9.53
10.7
12.2
14.0
kW
COP
2.83
2.83
2.83
2.84
2.83
-
Water flow rate plant side
3980
4675
5249
5996
6847
l/h
Pressure drop plant side
13
18
23
20
26
kPa
Heating A-7W45 (Source: Air in -7°C d.b. -8°C w.b. / Plant: Water in 40°C out 45°C)
Heating capacity
21.5
25.4
28.4
32.5
37.1
kW
Power input
8.08
9.54
10.7
12.2
13.9
kW
COP
2.66
2.66
2.65
2.66
2.67
-
Water flow rate plant side
3737
4397
4918
5631
6430
l/h
Pressure drops plant side
12
16
20
17
22
kPa
All data declared to EN 14511 –the above values are referred to units without options or accessories.

13
3.1.3 FLOW TEMPERATURE OF 55C
Frame
1
2
Model
30
35
40
45
50
U.M.
Power supply
400 -3N- 50
400 -3N- 50
400 -3N- 50
400 -3N- 50
400 -3N- 50
V-ph-Hz
IP
Heating A7W55 (Source: Air in 7°C d.b. 6°C w.b. / Plant: Water in 47°C out 55°C)
Heating capacity
30.0
35.3
39.7
45.4
51.7
kW
Power input
9.89
11.6
13.1
15.0
17.1
kW
COP
3.03
3.04
3.03
3.03
3.02
-
Water flow rate plant side
3269
3846
4315
4936
5623
l/h
Pressure drops plant side
9
12
15
14
17
kPa
Heating A2W55 (Source: Air in 2°C d.b. 1°C w.b. / Plant: Water in 47°C out 55°C)
Heating capacity
25.6
30.1
33.7
38.6
44.1
kW
Power input
9.91
11.6
13.0
14.9
17.1
kW
COP
2.58
2.59
2.59
2.59
2.58
-
Water flow rate plant side
2789
3280
3672
4206
4794
l/h
Pressure drops plant side
7
9
11
10
13
kPa
Heating A-4W55 (Source: Air in -4°C d.b. -5°C w.b. / Plant: Water in 47°C out 55°C)
Heating capacity
23.5
27.6
31
35.4
40.4
kW
Power input
9.93
11.7
13
14.9
17.1
kW
COP
2.37
2.36
2.38
2.38
2.36
-
Water flow rate plant side
2561
3007
3378
3857
4402
l/h
Pressure drop plant side
6
8
10
9
11
kPa
Heating A-7W55 (Source: Air in -7°C d.b. -8°C w.b. / Plant: Water in 47°C out 55°C)
Heating capacity
22.1
26.1
29.2
33.4
38.1
kW
Power input
9.94
11.7
13.1
15.0
17.1
kW
COP
2.22
2.23
2.23
2.23
2.23
-
Water flow rate plant side
2408
2844
3182
3639
4152
l/h
Pressure drops plant side
5
7
9
8
10
kPa
All data declared to EN 14511 –the above values are referred to units without options or accessories.

14
3.1.4 FLOW TEMPERATURE OF 65C
Frame
1
2
Model
30
35
40
45
50
U.M.
Power supply
400 -3N- 50
400 -3N- 50
400 -3N- 50
400 -3N- 50
400 -3N- 50
V-ph-Hz
IP
Heating A7W65 (Source: Air in 7°C d.b. 6°C w.b. / Plant: Water in 55°C out 65°C)
Heating capacity
30.7
36.1
40.5
46.3
53.0
kW
Power input
12.3
14.5
16.2
18.6
21.3
kW
COP
2.50
2.49
2.50
2.49
2.49
-
Water flow rate plant side
2686
3158
3543
4051
4628
l/h
Pressure drop plant side
6
9
11
9
12
kPa
Heating A2W65 (Source: Air in 2°C d.b. 1°C w.b. / Plant: Water in 55°C out 65°C)
Heating capacity
26.3
31.0
34.7
39.7
45.3
kW
Power input
12.4
14.5
16.2
18.6
21.2
kW
COP
2.12
2.14
2.14
2.13
2.14
-
Water flow rate plant side
2301
2712
3036
3473
3963
l/h
Pressure drop plant side
5
6
8
7
9
kPa
Heating A-4W65 (Source: Air in -4°C d.b. -5°C w.b. / Plant: Water in 55°C out 65°C)
Heating capacity
24.3
28.6
32.1
36.7
41.8
kW
Power input
12.2
14.6
16.3
18.6
21.3
kW
COP
1.96
1.96
1.97
1.97
1.96
-
Water flow rate plant side
2126
2502
2808
3211
3657
l/h
Pressure drop plant side
4
6
7
6
8
kPa
Heating A-7W65 (Source: Air in -7°C d.b. -8°C w.b. / Plant: Water in 55°C out 65°C)
Heating capacity
23.0
27.1
30.3
34.7
39.6
kW
Power input
12.4
14.6
16.3
18.7
21.3
kW
COP
1.85
1.86
1.86
1.86
1.86
-
Water flow rate plant side
2012
2371
2651
3036
3464
l/h
Pressure drop plant side
4
5
6
5
7
kPa
All data declared to EN 14511 –the above values are referred to units without options or accessories.

15
3.2 ErP Specification Datasheet
Data declared according to the European Regulation 811/2013
Model:
S-ASX 30
S-ASX 35
S-ASX 40
S-ASX 45
S-ASX 50
Air to Water Heat Pump:
Yes
Yes
Yes
Yes
Yes
Water to Water Heat Pump:
No
No
No
No
No
Brine to Water Heat Pump:
No
No
No
No
No
Low Temperature Heat Pump:
No
No
No
No
No
Equipped with a Supplementary Heater:
No
No
No
No
No
Heat Pump Combination Heater:
No
No
No
No
No
Average Climate Conditions : Declared for Low Temperature Applications - 35c
Unit:
Value
Value
Value
Value
Value
Seasonal Space Heating Efficiency Class
-
A+
A+
A+
A+
A+
Seasonal Coefficient of Performance (SCOP)
%
3.64
3.64
3.65
3.62
3.62
Seasonal Space Heating Energy Efficiency (ɳs)
%
143
143
143
142
142
Annual Energy Consumption (Qhe)
kWh
19042
22430
25119
28866
33022
Average Climate Conditions : Declared for Medium Temperature Applications - 55c
Unit:
Value
Value
Value
Value
Value
Seasonal Space Heating Efficiency Class
-
A+
A+
A+
A+
A+
Seasonal Coefficient of Performance (SCOP)
%
2.87
2.86
2.86
2.86
2.86
Seasonal Space Heating Energy Efficiency (ɳs)
%
112
111
112
111
111
Annual Energy Consumption (Qhe)
kWh
20475
24165
27063
30899
35398
Sound Power Level Indoors (Lwa)
dB
-
-
-
-
-
Sound Power Level Outdoors (Lwa)
dB
76
77
77
78
78

16
4 DIMENSIONS & CLEARANCES
4.1 Dimensions
With the S-ASX 30 to 50 heat pumps, there are 2 configurations on the air suction and air expulsion available for an
outdoor installation.
4.1.1 SIDE AIR SUCTION &SIDE AIR EXPULSION –STANDARD SUPPLY
4.1.2 SIDE AIR SUCTION &FRONTAL AIR EXPULSION –ADDITIONAL OPTION
S-ASX 30 to 40
S-ASX 45 to 50
1
System Return
1" 1/4 M
1" 1/4 M
2
System Flow
1" 1/4 M
1" 1/4 M
3
Domestic Hot Water Flow
1" 1/4 M
1" 1/4 M
4
Do Not Use –Cap Off
1" M
1" M
5
Do Not Use –Cap Off
1" M
1" M
S-ASX 30 to 40
S-ASX 45 to 50
A1
1180mm
1480mm
A2
615mm
615mm
B1
880mm
880mm
B2
465mm
465mm
H
1620mm
1620mm

17
4.2 Required Clearances
To guarantee the correct operation and accessibility to facilitate full maintenance procedures, please
ensure the free area around the appliance is as shown below to all models.
C
600 mm
D
600 mm
E
700 mm
4.2.1 SIDE AIR SUCTION &SIDE AIR EXPULSION –STANDARD SUPPLY
4.2.2 SIDE AIR SUCTION &FRONTAL AIR EXPULSION –ADDITIONAL OPTION
For Outdoor Installation it is Mandatory to Have One of the Following Options:
1. Installation of the “Protection Cap” on the Air Expulsion Side : Supplied as Standard – See 4.2.1
2. Installation of the “Lateral Expulsion Cap” and Frontal Shutting Panel – see 4.2.2.

18
5 STANDARD SUPPLY, ADDITIONAL OPTIONS & ACCESSORIES
5.1 Standard Supply
The following items and software are supplied as standard with each S-ASX 30 -50 air source heat pump:
•1 x Complete ASHP as described in chapter 2.2: Pre-fitted, pressure tested and pre-charged.
•1 x Main Heat Pump Controller: Fitted to the ASHP with all internal components pre-wired. The controller
consists of:
i) 1 x Siemens Albatros2 RVS21.826 main controller.
ii) 1 x Siemens AVS55.199.
iii) 2 x Siemens AVS75.370 extension module.
•1 x Modulating System Pump: To flow through the system side of the air source heat pump plate heat
exchanger to nearest thermal store pre-fitted and pre-wired with the heat pump casing.
•1 x Outdoor Air Sensor: Supplied loose, to be fitted and wired to heat pump controller on site.
•2 x NTC Temperature Sensors 10k: To be fitted into the top & bottom pockets of the thermal store and wired
back to the heat pump controller.
•Soft Start Function: Software activated as standard which reduces the compressor start current.
•Low Noise Setup: Acoustic insulation pre-fitted around refrigerant circuit and sound jackets pre-fitted around
compressors.
•Cascade Software (LPB Interface): The software will require activating on site once the cascade wiring be-
tween multiple heat pumps has been completed by the installers.
•Modbus Software: Allows communication by Modbus software.
•Wired Remote Controller: Supplied loose, it will need to be installed within plant room and wired back to the
heat pump controller.

19
5.2 Additional Options
Depending on the installation requirements, we can provide additional options to be installed within the appliance casing
to facilitate. These options will need to be ordered with the appliance so that they can be fitted in our factory on building
the appliance.
Item
Description
High Head System Pump
Allows the circulation of the water on the system side of the heat pump to the thermal
/ buffer vessel with a higher available head.
Internal DHW 3 Way Valve
Allows to divert the hot water produced by the heat pump from the heating circuit to
the domestic hot water circuit.
NTC Temp Sensor 10K
Required for a DHW circuit to monitor the DHW temperature within cylinder.
AVS 75.370 Extension
Module
In case additional relays are required for installation requirements. An additional two
modules can be added in total per heat pump controller.
5.2.1 SYSTEM SIDE INTERAL PUMP SETUP EXAMPLE –MODULATING OR HIGH HEAD
The location of the system pump is located where the black arrow is pointing to.
5.2.2 INTERNAL 3WAY VALVE EXAMPLE –DHW PRODUCTION
The location of the DHW 3 way valve is located where the black arrow is pointing to.
5.3 Accessories
Item
Description
External DHW 3 Way Valve
Instead of an internal valve, this can be mounted external within the plantroom.
Coil Protection Grills
Protect the external surface of the finned coil.
Rubber Vibration Dampers
Reduces the transmission of vibration to the surface and to reduce noise levels.
Adjustable Rubber Vibration
Dampers
As above –the height can be adjusted to fit uneven ground.

20
6 WEIGHTS
6.1 S-ASX 30 –50: Standard Supply
The following weight measurements are based on all items supplied as standard as listed in chapter 5.
6.1.1 TRANSPORT WEIGHT
Model:
S-ASX 30
S-ASX 35
S-ASX 40
S-ASX 45
S-ASX 50
Unit
Total Weight
430
432
435
511
513
Kg
6.1.2 INSTALLED –DRY WEIGHT
Model:
S-ASX 30
S-ASX 35
S-ASX 40
S-ASX 45
S-ASX 50
Unit
Total Weight
408
410
413
481
483
Kg
6.1.3 INSTALLED –FILLED WEIGHT
Model:
S-ASX 30
S-ASX 35
S-ASX 40
S-ASX 45
S-ASX 50
Unit
Total Weight
414
416
419
492
494
Kg
6.2 S-ASX 30 –50: DHW 3 Way Valve
If the internal DHW 3 way valve option is added to the S-ASX 30 - 50 air source heat pumps, then the below weight
must be added to the above weights to confirm a total weight:
Model:
S-ASX 30
S-ASX 35
S-ASX 40
S-ASX 45
S-ASX 50
Unit
Total Weight of internal DHW 3 way valve
9
9
9
10
10
Kg
7 NOISE LEVELS
The table below shows the noise level per S-ASX 30 - 50 model:
Model
Sound power levels [dB]
By octave bands [Hz]
Sound Power
Level
Sound Pressure Level
At 1
Metre
At 5
Metres
At 10
Metres
63
125
250
500
1000
2000
4000
8000
[dB]
[dB(A)]
[dB(A)]
[dB(A)]
[dB(A)]
S-ASX 30
81.2
75.5
70.4
69.3
67.4
64.5
58.7
53.7
83
72
56
46
41
S-ASX 35
82.3
76.6
71.5
70.4
68.5
65.6
59.8
54.8
84
73
57
47
42
S-ASX 40
82.3
76.6
71.5
70.4
68.5
65.6
59.8
54.8
84
73
57
47
42
S-ASX 45
83.3
77.6
72.5
71.4
69.5
66.6
60.8
55.8
85
74
58
48
43
S-ASX 50
83.3
77.6
72.5
71.4
69.5
66.6
60.8
55.8
85
74
58
48
43
Reference Conditions:
Performances referred to units operating in heating mode at nominal conditions A7W35.
Unit placed in free field on reflecting surface (directional factor equal to 2).
The sound power level is measured according to ISO 3744 standard.
The sound pressure level is calculated according to ISO 3744 and is referred to 1 metre from the external surface of
the unit.