WarmFlow Air Source A-Series Manual
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WarmFlow Air Source A-Series Manual

High efficiency variable speed air source heat pumps
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High Efficiency
Variable Speed
Air Source Heat Pumps
Models covered by this manual:
A-Series
Air Source
Incorporating:
AS01
AS02
User Instructions
Installation Instructions
Service Instructions
Guarantee Terms & Conditions
AS03

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Summary of Contents for WarmFlow Air Source A-Series

  • Page 1 High Efficiency Variable Speed Air Source Heat Pumps Models covered by this manual: A-Series Air Source AS01 AS02 AS03 Incorporating: User Instructions Installation Instructions Service Instructions Guarantee Terms & Conditions...
  • Page 2 TECHNICAL, SPARES & GUARANTEE CLAIMS For technical advice about the installation, commissioning, servicing or use of this appliance, please contact the Warmflow Customer Care Centre by post, phone, fax or email at the addresses below. Please also refer to our website.

  • Page 3: Table Of Contents

    CONTENTS Contents ..................................1 USER INSTRUCTIONS ............................3 Intended Use ................................. 3 Compliances ................................. 3 Basic Operation ................................3 Product Data ................................. 4 1.4.1 Starting Current ............................. 6 Construction .................................. 7 Supplied Components ..............................7 Storage / Transport ............................... 8 USER INTERFACE ..............................
  • Page 4 3.17 Troubleshooting................................52 YOUR GUARANTEES, TERMS & CONDITIONS ..................... 53 Period of Guarantee ..............................53 Warmflow’s Obligations ............................... 53 Your Obligations ................................53 Exclusions of Guarantee ............................. 54 4.4.1 Repairs ..............................54 4.4.2 Other property ............................. 54 4.4.3 General ............................... 54 End-of-Life Information ............................

  • Page 5: User Instructions

    1 USER INSTRUCTIONS 1.1 Intended Use The Warmflow Air Source Heat Pump units are intended for the production of hot water for space heating and sanitary water. The units can be used to provide heating and domestic hot water (DHW) via underfloor heating circuits, radiators and approved hot water cylinders. The units are designed to extract heat from the air.

  • Page 6: Product Data

    Heat is extracted from the air by blowing air through a finned radiator, known as the evaporator, with a fan. The extracted energy from the air is transferred into the refrigerant which circulates around the evaporator. The heat pump then converts this low grade heat to a high grade by compressing the refrigerant using the compressor.
  • Page 7 Table 2 Product information Model AS01 AS02 AS03 Air-to-water heat pump Water-to-water heat pump Brine-to-water heat pump Low-temperature heat pump Equipped with a supplementary heater Heat pump combination heater Symbol Value Unit Rated heat output Prated Declared Capacity of heating for part load at indoor temp. 20°C and outdoor temp., T = -7°C = 2°C = 7°C...

  • Page 8: Starting Current

    Table 3 Product Fiche Warmflow Warmflow Warmflow Supplier AS01 AS02 AS03 Model Energy Efficiency Class Rated Heat Output (kW) Seasonal Space Heating Energy Efficiency 1766 2648 6342 Annual Energy Consumption, GCV (kWh) Sound Power Level, LWA (dB) Rated Heat Output in Colder Climate (kW)

  • Page 9: Construction

    1.5 Construction The Warmflow air source heat pumps are housed in a powder-coated galvanised metal casing complete with enclosure box in which a cable entry terminal is mounted. Top Lid Installer’s Wiring Cover Front Grill Heating Flow & Return Feet Supports...

  • Page 10: Storage / Transport

    1.7 Storage / Transport The units come on a pallet (Dimensions of shipping sizes are shown below) and are secured to the pallet using screws. If the units are to be stored prior to installation, they must be kept indoors in storage conditions at a temperature of between 5°C and 60°C with a humidity level between 10%RH and 80%RH in order to provide a non-condensing environment.

  • Page 11: User Interface

    2 USER INTERFACE The appliance’s user control interface (see Figure 3) has been designed to maximise the ease of use and efficiency of the heating system. The interface is a touchscreen with all interactions being performed on the screen itself. On powering the unit up, the following start up screen will be displayed.
  • Page 12 Figure 4 Screen Icons There are a number of icons/buttons on the home screen as shown above. The meaning and features of these are explained in the points below: ON/OFF Button - Press this button to switch the unit from OFF to ON or vice versa. When the unit is switched ON, the symbol on the button will be red and the screen will appear in full colour as shown above.
  • Page 13 Figure 5 Unit OFF Screen Display MODE Button - Press this button to switch between operating MODES. Pressing the button will bring up the following menu screen where the required MODE can then be selected. Figure 6 MODE Menu Screen Page 11...
  • Page 14 The required MODE can be selected by pressing one of the five MODE buttons. Details of each MODE are below. After selection, the display will return to the Home Screen with the appropriate symbols for the selected MODE enabled. Modes Mode Description Hot Water...
  • Page 15 Flake’ symbol are displayed representing Hot Water and Cooling Temperature settings respectfully. The Temperature to be adjusted can be selected by pressing the required temperature button. This will then bring up a keypad as shown below. Figure 8 Temperature Setting Menu Screen The required setting should be entered using the keypad and then confirmed with the ‘Enter’...
  • Page 16 Timeclock Button - Press this button to set the internal timeclock. When the button is green, it indicates that the timeclock function is active. If the timeclock function is not active, the button will be white. Pressing the button will bring up the following setup screen where the required timeclock can then be set.
  • Page 17 Settings Button - Press this button to enter the Setting Menu. Pressing the button will bring up the following menu screen where five further Settings Menus can be found. Figure 10 Settings Menu Screen The Settings Menu Screen features six further Setting Sub-Menus. These include Status, Clock, Electric heating, Mute, Factory &...
  • Page 18 Status – Press this button to enter the Status Sub-Menu. Pressing the button brings up the following display screen which displays the current status of the unit, the current mode the unit is running in and live data for a number of parameters. These parameters include Inlet Water (Heating Return) Temperature, Outlet Water (Heating Flow) Temperature, Water Tank (DHW Cylinder) Temperature and the Ambient Outdoor Temperature.
  • Page 19 Clock – Press this button to enter the Clock Sub-Menu. This sub-menu allows the clock to be set to the current time and date. This must be accurately set to enable the timeclock functionality and monitoring system to operate correctly. The clock sub-menu is shown below. Figure 12 Clock Sub-Menu Screen The date and time can be set using the up and down arrows shown in the display above (hold the buttons down to speed up the adjustment).
  • Page 20 Electric Heating - Press this button to enable or disable Fast Heating (when available). Fast Heating is only available on models when parameter R12 is active and an auxiliary electric immersion heater is fitted. Pressing the button will bring up the following menu screen, where the fast heating function can be enabled or disabled.
  • Page 21 Mute – Press this button to enter the Mute Sub-Menu. This sub-menu allows the unit to be switched into or out of Quiet Mode and also for Quite Mode to be scheduled at certain times of the day/night. In Quiet Mode, the unit will run at a slower speed with the fan speed also reduced to provide quiet operation.
  • Page 22 Figure 15 Mute Timer Sub-Menu Screen Enable Mute Mode by pressing the On/Off slider button at the top right corner of the display. Once Mute Mode is enabled, the On and Off times can be set. The time can be set by selecting the appropriate time setting which then allows for it to be adjusted as required.
  • Page 23 Factory – Press this button to enter the Factory Settings Password Screen. The Password Screen is shown below. Figure 16 Factory Password Entry Screen Enter Password ‘0022’ to enter the Engineer Parameter Sub-Menu. NOTE: This Sub-Menu should only be accessed by a suitably trained engineer. Modifying parameters can cause operating errors and malfunction of the unit.
  • Page 24 Figure 17 Factory Password Entry Screen Parameters – Press this button to enter the Parameters Sub-Menu. Pressing the button brings up the following configurable display screen which features a large number of editable parameters spread across a number of pages. These parameters are detailed in section 3.12. Figure 18 Parameters Sub-Menu Screen Page 22...
  • Page 25 Unit State – Press this button to enter the Unit Status Sub-Menu. Pressing the button brings up the following display screen which displays the current status of a number of outputs spread across 3 tabs. These outputs and their functionality are detailed in Table 5 at the end of this chapter: Figure 19 Unit Status Sub-Menu Screen Failure –...
  • Page 26 Figure 20 Failure Logging Sub-Menu Screen Brightness – Press this button to enter the Brightness Setting Sub-Menu. Pressing the button brings up the following display screen which allows the display brightness to be increased or decreased using the slider. The Brightness Setting Screen is shown below: Figure 21 Brightness Setting Screen Page 24...
  • Page 27 Curve – Press this button to enter the Curve Sub-Menu. This sub-menu displays a graph showing the Heating Flow and Heating Return temperature when the unit is running (data will not be recorded if the unit is not running). The data is recorded every 5 minutes and displayed in either °C or °F dependent on the user setting (parameter H03).
  • Page 28 Table 5 Monitored Parameters Ref. Text Description Expected Value(s) Inlet Water This is the temperature at which the heating Ambient temperature if the appliance (Return) Temp. water returning from either the heating circuit has been off for a time. or to the hot water storage cylinder is No greater than 65°C in normal entering the heat pump.
  • Page 29 Fan Motor This appliance must be serviced annually or as indicated by the user interface controller. Contact Warmflow for further details. In the event of a breakdown please refer to section 3.15 - Alarms and Troubleshooting. Alternatively, contact your commissioning engineer who should then contact our service department whilst at your home, to report the fault.

  • Page 30: Air Source Heat Pump Installation

    150mm above the ground. Flexible feet are available separately from Warmflow in order to provide this gain in height. This should then be installed on a smooth horizontal surface capable of supporting the weight of the unit together with any accessories and other plant.
  • Page 31 FLOW SIDE FRONT RETURN Figure 24 AS02 Casing Dimensions & Heating Connection Locations Page 29...

  • Page 32: Access

    SIDE FRONT FLOW RETURN Figure 25 AS03 Casing Dimensions & Heating Connection Locations The heating flow and return connections are located on the right side panel of the AS01, AS02 and AS03 units as shown in the images above. The heating flow is the top connection with the heating return at the bottom.

  • Page 33: Unpacking

    Glycol should be added to the system in areas where the ambient temperature drops below freezing. The amount of Glycol to be added should be determined according to the manufacturer’s instruction. Warmflow provide a non- toxic glycol solution complete with corrosion, scale and biological inhibitor.

  • Page 34: Freeze Protection

    Warmflow for details. Please see section 3.9 for more details of installing and wiring the 3-port motorised valve. These air source heat pump units come with the following items included integrally, a high flow circulating pump, a manual air vent, flow switch and temperature sensors.
  • Page 35 Figure 26 Heating & DHW Schematic Figure 27 Heating Only Schematic Page 33...

  • Page 36: Defrosting

    In order to do this effectively, it is recommended to have an in line buffer tank on the return heating pipework to the unit. An open circuit must always be maintained to allow defrosting to occur. A buffer is available separately from Warmflow. 3.8 Bypass Valve...

  • Page 37: Electrical Installation

    The valve turns clockwise when DHW is enabled as shown on the right in Figure 28 above with flow from A to B. With the valve body in the default position, the actuator should then be set to the default position as shown on the left in Figure 29 below. This can be achieved by holding down the clutch release button (located on the right side of the actuator) and rotating the lever into the correct position.

  • Page 38: Digital Inputs

    Table 7 Electrical Installation Specification Unit Minimum Wire Gauge MCB Rating (Type C) RCD Rating 30mA ≤0.1 seconds AS01 2.5mm 30mA ≤0.1 seconds AS02 6.0mm 30mA ≤0.1 seconds AS03 6.0mm NOTE: The incoming power supply must be connected via an isolating switch with a minimum breaking gap of 3mm.

  • Page 39: Digital Outputs

    Figure 31 Installer’s Digital Input Connections (AS02 units) A link wire should be placed between the terminals for the ‘Master On/Off’ and also between terminals for the ‘Mode Heat/Cool’ function. This will ensure the unit is on and set in heating mode.

  • Page 40: Temperature Sensors

    The AS02 unit features an in-line immersion heater built inside the casing to boost the heating water. If this built-in immersion is to be used, parameter R12 should be set to 1 (Water Line). This immersion will then become active when all of the following conditions are met: ...

  • Page 41: User Interface (Controller)

    3.10.5 User Interface (Controller) The user interface (controller) needs to be connected by plugging it into the corresponding plug which can be found in the installer’s wiring terminal. The interface can be plugged directly into the unit or further away in the property by using the supplied extension cable. This extension cable is 10m long and this can be further extended up to a maximum length of 200m.

  • Page 42: Parameter List

    3.11 Parameter List Table 8 Protection Parameters Parameter Name Range Default Description Antifreeze Temperature below which Antifreeze 5°C Temperature Protection is enabled Antifreeze Refrigeration Pressure at which 0bar Pressure Antifreeze Protection is enabled Antifreeze Temp. The temperature rise above A01 at which 2°C Difference Antifreeze Protection is disabled...
  • Page 43 Table 10 Pump Parameters Parameter Name Range Default Description Selects the operating mode of the pump, Running Mode 0/1/2 0 for normal, 1 for special, 2 for interval Running Interval Time between pump operating cycle 0~120min 30min Time when the compressor is off Pump operating cycle time when the Running Duration 0~30min...
  • Page 44 Mute Mode Set fan speed when in mute (reduced fan 600r Speed speed) mode DC/EC Fan 600r Rated fan speed Rated Speed Type of fan motor (0 for High, 1 for DC Fan Motor Type single fan, 2 for DC double fan) * Indicates that this parameter is not adjustable Table 12 System Parameters Parameter...
  • Page 45 Table 13 Thermal Disinfection Parameters Parameter Name Range Default Description Hot water thermal disinfection target Setpoint 60~70°C 70°C temperature Duration of thermal disinfection cycle Time of Duration 0~60min 0min (0 is off) Start Time 0~23h Time when thermal disinfection is on Thermal disinfection cycle schedule Work cycle 1~30days...

  • Page 46: Commissioning

    R20 should be set to -5°C. However, this is not recommended and should only be undertaken in consultation with Warmflow. If weather compensation is disabled, the SAP assessment (EPC) is invalid. A commissioning certificate and label must be provided that confirm this disablement.

  • Page 47: Dhw Cylinder Heat Up Test

    Warmflow engineer or other trained and competent engineer and the combined installation/commissioning certificate (See Section 0 of this manual) returned to Warmflow within 30 days from the date of installation and 90 days from the date code stamped on the appliance.

  • Page 48: System Hand Over

    The appliance must be serviced at least annually or as indicated by the user interface controller (whichever occurs sooner) by a Warmflow Engineer or other competent Engineer. This is necessary in order to optimise performance of the appliance and to ensure its efficiency and safety for the user.

  • Page 49: Alarms And Troubleshooting

    Suggested actions for each alarm condition are also included. The suggested actions are attributed to the user (typically the homeowner) or a Warmflow engineer or other trained and competent engineer, and should be conducted in the order suggested. The possible causes and suggested actions are not exhaustive.
  • Page 50 Alarm Action By Fault Possible Cause(s) Suggested Action(s) Code User Engineer Test the operation of the heating The temperature sensor is faulty or  Heating Return Temperature Sensor Error return temperature sensor and disconnected. re-connect/replace if necessary. Test the operation of the heating The temperature sensor is faulty or ...
  • Page 51 Alarm Action By Fault Possible Cause(s) Suggested Action(s) Code User Engineer Test the operation of the ambient  Low Ambient Temperature Warning The ambient temperature is too low. temperature sensor and re- connect/replace if necessary. Check the operation of the ...
  • Page 52 Alarm Action By Fault Possible Cause(s) Suggested Action(s) Code User Engineer Check the wiring and connection There is a communication error between the fan  E081 DC Fan Motor Communication Error between the fan speed control speed control module and the main board. module and the main board.
  • Page 53 Alarm Action By Fault Possible Cause(s) Suggested Action(s) Code User Engineer  IGBT Power Device Error A transducer has overheated. Check the current measurement. Check the operation of the  Overload Error The compressor input current is too high. refrigeration circuit in terms of gas pressure and charge.

  • Page 54: Troubleshooting

    3.17 Troubleshooting Other faults or problems with the appliance that may not trigger an alarm are listed below Symptom Possible Cause(s) Suggested Action(s) Action By User Engineer  Ensure timer mode is enabled in ‘Timer’ menu. No heat supplied to the property or hot water Timer mode not enabled.

  • Page 55: Your Guarantees, Terms & Conditions

    In the event that components are not capable of repair, Warmflow will provide replacement parts for any such components. Warmflow reserves the right to repair or replace components within the period of guarantee at a time and location that is most convenient to the company.

  • Page 56: Exclusions Of Guarantee

    Warmflow. Invoices for call out and/or repair by any third party or parts supplied by a third party will not be accepted unless previously authorised by Warmflow in writing.
  • Page 57 (l) Defects caused by the improper use or storage of the appliance and in particular (but without limitation) Warmflow shall not be liable in the case of defects arising from normal deterioration or improper or faulty handling or processing of the appliance by the customer;...

  • Page 58: End-Of-Life Information

    5 END-OF-LIFE INFORMATION Warmflow High Efficiency Ground Source Heat Pumps must be disposed of according to local regulations by using a public or private waste collection service. 5.1 Safety Risks Prior to disassembly, the appliance should be electrically isolated and disconnected.
  • Page 59  Ensure that the certificate is signed by both the Competent Person and the Customer.  Register the Appliance.  Remove the white copy of the Installation/Commissioning Certificate.  Send the certificate to Warmflow By post to: Warmflow Engineering Co. Ltd. Lissue Industrial Estate...
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  • Page 63: Appliance Service Records

     All product warranties will be invalidated if the appliance is not serviced at least annually or as indicated by the user interface controller (whichever occurs sooner) by a Warmflow engineer or other trained and competent Engineer and details recorded in the service record section of this manual.
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  • Page 76 This manual is accurate at the date of printing (E&OE) but will be superseded ASHP MAN and should be disregarded if specifications and/or appearances are changed ISSUE 7 in the interests of continued product improvement. FEB 2020 Page 74...

This manual is also suitable for:

Air source as01Air source as02Air source as03

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