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Grant Products HPAW65 Heat Pump User Manual

1. 16O e 150 O Lae Expansion Valve Ret Gas Sensor T Ext Temp Sensor m SET Coil Temp Sensor Dis Gas Sensor Ret Temp Sensor OS Y 260 og 5 O 5o 3 L al i ii Ns AE Power Supply Terminal ATC Controller Padum 3 Connection points for installer Figure 13 1 Heat pump wiring diagram 1 If no continuity can be found between terminals 1 amp 2 and or 1 amp 9 there will be a fault within the heating s plan system see diagram for location of the terminals Please go back to your design of the S plan wiring and check it against the installation manual In detail trace the demand for CH and DHW in isolation covering the programmer room or cylinder thermostats motorised valves and end switches Make sure that when the end switches of the motorised valves make that there is no A E Disconnect Electric Element for Bivalent 3KW Switched Output Electric O Element S Plan Controls Connections voltage present Voltage on these wires will do irreparable damage to the heat pump and will not be covered by the warranty WWSD warm weather shut down happens only under 2 conditions 1 when the ambient air temperature is at 24 C or equal to the indoor temperature and 2 when the CH is the only d
2. ET a l l l l l l l l l l l l l Heating Load Figure 4 7 Monovalent system with Buffer and S Plan type controls L When considering the use of a buffer also consider the space the buffer will take up it may not be possible to house both a cylinder and a buffer tank The following diagrams show both an S plan and an extended S Plan for use with a buffer tank CH Return DHW Return 4 7 Extended S Plan with Buffer Monovalent DIESEN COINS CL EN SSS SS 1 Internal wiring centre BETTER TAPE AA NAAT Cylinder s m ems e ad Heating Load Heat Pump ATC 1 l NT G AAA Outside Ari wall c T E 2 z a a Ug Grant Aerona DIN a 5 T Heat Pump kh tank LK Isolating valve ES ERE F N A pa r 5 Primary Papi LE Pump PP EM Den ua ee TE O Isolating valve Return Figure 4 8 Monovalent system with Buffer and extended S Plan type controls 1 NOTE The hydraulic diagrams do not show the isolation valves any expansion vessels pressure relief valves or filling loops More information on these components can be found in section 7 0 p O O O 9 E ES y gt I 5 System Design Criteria Unlike a typical condensing oil or gas fired boiler that operates at a flow of 70 C and a return of 50 C a heat pump operates with a flow of betwee
3. A liar m A Type pa la A Type HPAW65 1770 ca IA 230 50 36 09 20 0 32 D 50 09 34 70 40 D HPAW85 GU O ES Osa 230 50 44 36 23 45 BE D 58 36 37 45 40 D HPAW110 2852 37 20 12 40 230 50 50 20 25 40 32 D 64 20 39 40 50 D HPAW130 2830 36 91 12 30 230 50 49 91 20090 de D 63 91 39 30 50 D HPAW155 3028 39 50 13 17 230 50 52 50 260 17 32 D 66 50 40 17 50 D Assumptions 1 30m run from consumer box to heat pump 2 Cable not run in thermally insulated environment Method A and C only 17th edition 3 Starting current assumes 3x running current 4 Earth Loop Impedence value does not exceed 0 3692 for a D type MCB IMPORTANT ENSURE INCOMING SUPPLY CABLE AND SUPPLY FUSE ARE OF SUITABLE SIZE 8 Electrical 8 6 System Control Wiring Diagrams DHW Zone Valve Heat pump S Plan controls connections Room Programmer Thermostat Figure 8 10 Domestic hot water connection diagram Hlg Zone Valve Heat pump S Plan controls connections Cylinder a Baga Thermostat 2 Programmer Thermostat mS EN 280V 50Hz 20 Figure 8 11 Central Heating connection diagram GRANT 8 7 Wiring Diagrams Return sensor SSe 61615 BTC SER S 230V 24 Vac Transformer a O Outdoor sensor SO OCIOSO SIDO O El Ee l
4. switch live to feed the boiler and the pump DHW Zone Valve Boiler amp System Circulation Pump In contrast the heat pump switches at OV and therefore a simple re wiring for existing systems must take place at the wiring centre before it is safe to connect to the heat pump Room Programmer Thermostat Figure 8 1 S Plan type system for normal boiler connection 8 Electrical fh Hlg Zone Valve DHW Zone Valve Earth connections have been excluded for clarity Ensure all earth connections are made prior to energising OQ ba Room Programmer Thermostat Figure 8 2 S Plan type system for connection to Aerona heat pump Within the heat pump control panel connect the wires as follows B NOTE Wiring Centre Heat Pump 8 1 Common Note that both wires from Gr grey now terminate on their own at 9 2 Heating position 8 The wires from O orange 10 3 DHW from each valve now terminate on Their own BE UHE For multiple heating zone valves follow the above and join all oranges from the feed from the cylinder thermostat ng heating motorised valves into 9 in the wiring centre and all greys to terminal 8 and the feed to Br brown on the DHW motorised valve now terminates at position 7 When that is completed the 3 core 0 75mm cable can now connect at positions 8 9 and 10 8 3 Controller Fig
5. 1x 3 core SWA suitable for the current from the external isolator to the heat is receiving power from another pump source Please label all controls and devices if this is possible advising to check and isolate in one or more d 1x 3 core umbilical cable from the heat pump to the ATC heat pump controller locations as required mounted inside the house A 5m length of this cable complete with fitted plugs is supplied with the heat pump a 1 x twin and earth cable suitable for the current and length of run from the consumer board to the external isolator C 1x 3 core 0 75mm from the systems wiring centre to the heat pump To help remove as much of this risk as possible take all heating system For Bivalent systems an additional 2 core 0 75mm cable is required from the heat heat pump and immersion element pump to the boiler circuits from a single supply at the consumer unit 8 2 Basic Circuits Making the Connection The diagram below is of a typical S Plan type control system as used with a gas or oil fired boiler FOR INFORMATION ONLY DO NOT FOLLOW THIS DIAGRAM AS IT WILL CAUSE IRREPARABLE DAMAGE TO THE HEAT PUMP both motorised valves to Gr grey terminate at L giving them a permanent supply of 230Vac The two wires leaving the motorised valves at O orange are the switched output and will also be at mains potential The switches inside the motorised valves make the connection between L permanent Live and 10
6. advice regarding the layout of the system or any of the controls required for any individual heating system These instructions do not replace the installation or users manuals for any additional components used in the design of your system e g cylinders motorised valves programmers solar thermal devices buffers etc Grant Engineering UK Ltd offer a design service for an additional fee please contact info grantuk com for more information or visit our website at www grantuk com Note this service is subject to the terms and conditions in force at the time of the design These instructions must be left with the householder for their reference 1 2 Warranty This appliance is guaranteed for two years covering parts and labour When making a claim against this warranty the following information must be provided at the initial point of contact Appliance model number e Appliance Serial number e Date of Installation e Date of Commissioning if different e Evidence of Heat Loss calculation IMPORTANT e Description of fault together with any relevant fault codes Please ensure that the caller is on site to assist us in providing a fast response The warranty will begin only when a completed registration card is returned to Grant or when the registration is completed online at www grantuk com Failure to complete the registration at the time of installation will result in the warranty being suspended This does
7. button the Item button to access the desired function Use the A or V button to alter the setting A Press the Item button once more to go back to the menu The BTC incorporates 2 digital temperature controls one for the CH and one for the DHW The purpose is to give far greater control over the heating system than conventional controls allow If UFH Under Floor Heating and Hadiators are on the same system you may want the system to work around a flow temperature of 50 C If UFH alone then the flow temperature could be a 35 C flow When a DHW demand is present you may want to use the heat pump to take the water to 60 C or alternatively you may wish to preserve the COP and therefore the efficiency and only raise the cylinder to 50 C This control allows you to be in control When operating in DHW mode the ambient air temperature is ignored However in CH mode without DHW demand the ambient outside temperature is used to determine how much input power is required to achieve the desired target temperature This provides a very efficient way to weather compensate the heating system which will add to the heat pump and the system efficiency NOTE This increase in efficiency has NOT been taken into account in the COP s quoted on the technical specifications table BTC Settings Menu Item Access Active Mode Default Range OUTDR Start 1 Always All 21 C 1 to 29 C OUTDR DSGN 1 Always Al
8. controller socket S Plan controls connections Figure 8 8 Location of connections in control panel Power supply terminal Disconnect Electric Element for Bivalent Switched Output E NI 240 230 220 21O 200 190 180 170 160 150 24 Vac go eti C3 Compressor OIQOIOOOOO Orange OOQ O N 00 oO ba Expansion Valve Ret Gas Sensor Ext Temp Sensor Coil Temp Sensor Dis Gas Sensor Ret Temp Sensor 00000 pressure switch High pressure switch 1 LOW C L95 ALI 6kW Electric O Element a ee Terminal x The 6kW immersion ATC Controller NER element is ONLY available en as a factory fitted option Pd ee Connections 3 Connection points for installer Figure 8 9 Heat pump connection diagram for 6KW electrical element 3kW Immersion Heater 6kW Immersion Heater MCB MCB MCB MCB Pr W Isan A Teun A lian m A Type Em T A Type HPAW65 1620 22 09 7 36 220 50 35 09 20 90 32 D 49 09 34 36 40 D HPAW85 2200 30 00 10 00 220 50 43 00 23 00 32 D SOO 30O 40 D HPAW110 2610 35 59 11 86 220 50 48 59 2486 32 D SAS H OI ep D HPAW130 2590 35 32 11 77 220 o0 48 32 24 77 32 D S22 oE AOO a0 D HPAW155 2770 37 77 12 59 220 50 50 77 25 59 Be D AO OS 50 D 3kW Immersion Heater 6kW Immersion Heater MCB MCB MCB MCB Istar
9. external ambient air temperature is high However during the winter it would not be economical for any heat pump to try to raise the water temperature to this level As a result Grant has developed a control system that will take the temperature of the existing cylinder from 45 C to 60 C after the cylinder thermostat has switched off the hot water operation of the heat pump This system uses both the existing cylinder immersion element and cylinder thermostat but operated via an add on relay and override switch enclosed in a separate unit to be mounted next to the cylinder This system is fully automatic but can be overridden by the user if required i e the user can switch on the immersion element using the override switch to manually boost the hot water cylinder temperature Return sensor Hacc S o m pm 7 B E Supply sensor E D D DEI D Outdoor sensor Fuse Zone Valve Zone Valve e Fuse DO ELT s Va la la E la la la la ls Ela 9OoOo090080800800209 Heat pump S Plan conto connections To domestic hot water booster relay coil see Figure 9 2 Programmer Room Thermostat B Yo 230V 50Hz Controller Immersion element Relay 2 in heat pump c
10. good practice to have automatic air vents at all high points of the system particularly where pipes fall vertically e g drop feed systems The immersion unit within the heat pump has a factory fitted manual air vent i Programmer CH Return DHW Return ba Ha centre oe e Cylinder i Stat i i LI Room Stat gt Heating Load o e m T T T O a Heat Pump ATC BEA Outside E Expansion Ben wall vessel Car Grant Aerona ko Pressure Heat Pump PAG Gauge Sal Isolatingi my valve Bi X 5 E pag 5 Primary A MESES OS VA Filling S Pump Flexible Loop ipe dE T a PIN Isolating Pens IS AU v valve Main AE Figure 7 1 Sealed system layout Return Hlg Zone Valve 8 Electrical IMPORTANT All electrical work must be undertaken by a competent person failure to observe this legislation could result in an unsafe installation and will invalidate all warranties 8 1 General The Grant Aerona Heat Pump is very simple to install and to wire The units are designed to meet the need for simplicity both in installation and in servicing As a result the NOTE wiring involved is both minimal and simple compared to other heat pumps available For Monovalent systems the following cables are required It is possible for some components to have 2 power supplies feeding them It is also possible for mistaking an internal circuit to be dead when it b
11. is illuminated Problem solved Fault in system wiring see note 2 Switch external isolator OFF Yes Is heat pump working Reset MCB Normal Condition or RCD No See note 3 Is the BTC showing any demand or WWSD No Check 24Vac to pins Yes 12 8 24 on BTC is Yes present Does MCB Replace BTC or RCD trip Does ATC show any fault code Yes Ean This Tauli code Yes Trace Taulit on Heat 2 be repaired Pump See note 4 5 Seek help from qualified electrician No Does BTC show Yes Can this fault code Is the circulatin 9 any fault code be repaired pump running Replace No component Check pressure gauge on side of heat pump see note 5 Is the power at Nag Is the fan the component running No Check capacitors and replace if Yes necessary CAUTION see note 6 Has heat pump No UCI Anu tripped on high or component leaving low pressure switch the PCB Is the compressor dii running No Yes Yes Replace PCB High pressure No Low pressure switch switch The heat pump appears to be working correctly Yes Yes Bleed air from Refrigerant low system see note 7 call helpline 13 2 General Notes 230 Vac f 24 Vac Fuse Compressor eater Compressor 240 O 9 210 O 8 20O O 7 190 O 6 180 17O
12. operation during period 20 00 to 8 00 next morning Electric Immersion Heater and Trace Heater Operation Started by ambient temperature Parameter d Setting Refer to Table of ATC Parameters above Regardless of whether the ATC is in Standby or Auto mode when either a Return water temperature is 2 C lower than the parameter d temperature setting adjustable between 10 C to 5 C with default setting 3 C OR b Ambient temperature is at parameter d temperature setting BOTH the Electric immersion backup heater and Trace Heater in the base tray will be energised Both will remain energised until either a the Return water temperature has reached set temperature 55 C OR b the ambient temperature is higher than the parameter d temperature setting If the Return water temperature rise is less than 1 C in a 20 minute period when the heat pump is operating parameter O set to 1 C adjustable between O C and 30 C with default setting of 2 C the Electric Immersion backup heater and trace heater will be energised to increase the heat output of the heat pump The Electric Immersion heater and Trace heater will be switched off when the Return water temperature reaches DO C Bivalent Systems In a Bivalent system the electric immersion element is disconnected and the switched live for the backup boiler is taken from the immersion element live terminal refer to Figures 8 7 and 8 11 Th
13. per the installation instructions Receipts should be kept as proof 7 All claims under this guarantee must be made to Grant Engineering UK Ltd prior to any work being undertaken Proof of purchase and date of installation must be provided on request Invoices for call out repair work by any third party will not be accepted unless previously authorised by Grant Engineering UK Ltd 8 This guarantee is transferable providing the installation is serviced prior to the dwelling s new owners taking up residence Grant Engineering UK Ltd must be informed of the new owner s details 9 Grant Engineering UK Ltd will endeavour to provide prompt service in the unlikely event of a problem occurring but cannot be held responsible for any consequence of delay however caused 10 This guarantee applies to Grant Heat Pumps installed on the UK mainland Isle of Man and Channel Islands only Provision of in warranty cover elsewhere in the UK is subject to agreement with Grant Engineering UK iid GRANT EFFICIENT HEATING SOLUTIONS GRANT ENGINEERING UK LTD Hopton House Hopton Industrial Estate Devizes Wiltshire SN10 2EU Telephone 01380 736920 Fax 01380 736991 Email info grantuk com Website www grantuk com To be Completed by the Householder IM LEA EE Atas AA S TTT ALT TOWN ME CO Post code Tek Home ee ee Work een nen ren Mobile te nee een Heat Pump Model 2 near 9 een INCITS Cle E oe e un System Typ
14. power is established the ATC and BTC should now show display default settings Set the ATC to automatic using the M button and the display will show the return temperature Within 30 seconds the circulating pump will start Within 30 seconds the fan will start ve 18 18 20 2r Pa 29 Within 60 seconds the compressor will start Once the compressor has started pay attention to the pressure gauge on the side of the heat pump If the pointer starts to rise quickly enters the yellow or red zone within 30 seconds switch off at the external isolator and remove all air from the system When satisfied that all air has been expelled start this process again from step 12 Hemove demand for CH and DHW Compressor and fan will stop Circulating pump will continue to run for a period of time default setting in BTC Set the ATC and BTC details in sections 11 2 and 11 3 respectively When putting the heat pump into use for the first time watch the refrigerant pressure gauge on the side of the heat pump The needle will rise over time when the temperature of the refrigerant increases However if this happens very quickly e g rises into the yellow or red zone within 1 minute then an air lock is present Switch off power to the heat pump immediately and purge any remaining air from the system IMPORTANT Grant Aerona heat pumps should be stored and transported in an upright position If n
15. will be made providing that the Heat Pump has been installed and commissioned correctly in accordance with the manufacturer s instructions Proof of purchase date must be provided upon request Chargeable Repairs A charge will be made if the cause of the breakdown is due to any of the following e Faults caused by the plumbing or heating system external electrics and external components e The Grant Heat Pump has not been commissioned or serviced in accordance with the installation and servicing manual e The system has been installed for over 2 years Remember before you contact Grant Please complete the guarantee registration section then detach the card and return it within 30 days of the installation of your Grant Heat Pump Terms of Manufacturer s Guarantee 1 The Grant Heat Pump guarantee starts from the date of purchase 2 All electrical and mechanical components supplied with the Grant Heat Pump are guaranteed for a period of two years 3 The registration card must be completed and returned within 30 days of installation Failure to do so does not affect your statutory rights 4 The Grant Heat Pump must be installed by a competent installer and in accordance with the Codes of Practice and Regulations in force at the time of the installation 5 The Grant Heat Pump and its components must not have been modified or tampered with 6 The installation must be serviced every 12 months as
16. 3 Press the SET button to confirm your entry 4 The clock is now set Setting the ATC parameters The table shown on page 31 gives a list of the parameters applicable to the ATC Please note that there are parameters that MUST NOT be altered Changing these parameters will adversely affect the efficiency of the heat pump and will invalidate all warranties To alter a parameter first press AV until you have reached the appropriate function To alter the setting press the SET button once then use the AV buttons to alter the value Once set press the SET button to exit back to the function menu 1 NOTE If no button is pressed for a period of 20 seconds the ATC will automatically default back to normal status OIMIA v sT G Figure 11 1 ATC display and buttons ATC Parameters Parameter U Return water temperature to start electrical heater 0C 900 20 Factory Set 1 Desired Return water temperature setting 10C 60C 55C SET TO 60C 2 Defrost cycle 30 Min 90Min 40Min Factory Set 3 Coil temperature point to start defrosting 30 C OC 3 C Factory Set 4 Coil temperature point to stop defrosting TRO NG 18 C Factory Set 5 Max time for defrosting 1 Min 12Min 8Min Factory Set 6 Reserved Reserved T Restart after power failure 0 1 O NO 1 Yes 1 Factory Set 8 EEV manual auto control 0 1 1 Reserved 9 Water pump working mode O Continuous 1 Normal 0 1 1 Factory Set i O daytime an working m
17. 6 17 i7 17 19 19 20 22 23 25 25 10 11 12 13 14 15 16 17 Domestic Hot Water 9 1 Temperature Control 9 2 Heat Pump Cylinders 9 3 Temperature Boost Filling the System 10 1 Filling and Venting Sealed Systems 10 2 Flushing and Corrosion Protection 10 3 Antifreeze Commissioning 11 1 Switching on First Time 11 2 Setting the ATC Controller 11 3 Setting the BTC Controller 11 4 Record of ATC and BTC Settings Servicing amp Maintenance 12 1 General 12 2 Air Inlet and Outlet 12 3 Condensate Disposal 12 4 Heating System Connections 12 5 Heat Pump Controls 12 6 Refrigerant Fault Finding Spare Parts Accessories 15 1 Sealed System Kits 15 2 Immersion Heater Kits Glossary Of Terms Warranty 26 26 26 26 28 28 28 28 29 29 30 32 34 35 35 35 35 35 35 35 36 40 41 41 41 42 43 1 Introduction amp General Information 1 1 General Information The Grant Aerona Heat Pump is a low water content low temperature heat source designed to be highly efficient when installed and used in line with these installation and user instructions It is important that these installation instructions are understood and followed to ensure reliable operation in all weather conditions Failure to do so will result in erratic temperature swings poor efficiency and an unhappy customer It is not within the scope of this manual to design the heating system or provide any
18. Filling and Venting Sealed Systems NOTE For technical details and requirements for Sealed Systems refer to Section 7 of these instructions For details of the Grant Sealed System kits for use with the Grant Aerona heat pump range refer to Section 15 IMPORTANT As with all wet heating systems it is the responsibility of the installer to remove all the air from the heating system after filling 1 To vent the heat pump All Grant Aerona heat pumps are fitted with a single automatic air vent on the top of the electric immersion element housing Check that the small cap on the automatic air vent is screwed on fully then unscrew it one complete turn leave the cap in this position Note Cap is supplied loose in bag attached to air vent 2 Before filling the system check charge pressure in the expansion vessel as supplied in the Sealed System kit This should be 0 2 0 3 bar higher than the cold fill pressure for the system The nominal filling pressure for the system when cold is 0 5 1 bar 3 Ifa flexible filling loop is to be used to fill the system as supplied in the Sealed System kit ensure it is connected between the two filling valves and that both valves are closed A valve is open when the operating lever is in line with the valve and closed when at right angles to it 4 To fil the system ensure that the mains cold water supply valve stop cock is open then open the fill
19. Grant Aerona Air Source Heat Pump Air to Water Heat Pump Range Installation amp User Instructions GRANT Tested to BS EN 14511 Part No DOC 87 Rev 00 January 2010 EFFICIENT HEATING SOLUTIONS STOP Before continuing with the installation of your new Aerona Heat pump please spend a few minutes confirming the suitability of the Heat Pump to your system Failure to do so may result in poor performance and wasted time Has a heat loss calculation been carried out kW o ls this system designed for Mono or Bivalent e f Mono total heating capacity KW f Bivalent what is the load capacity of Heat Pump KW o f Bivalent what is are additional heat source s AA KW AAA KW ii kW e Type of system design YSN li Y plan ii Other Will a buffer be used Yes No e Ifyes what is the capacity of Buffer ne litres Has cavity wall insulation been installed Yes No Has loft insulation of 270mm been installed Yes No o Have all system pipes been lagged correctly Yes No Are the existing controls being upgraded Yes No If any of the above questions cannot be answered accurately please do NOT proceed with the installation While any errors made now may be able to be compensated for after the installation is completed you will incur unnecessary delays and additional costs Legislation All work that is required regarding the refrigerant circuit must be carried out by an F gas registered o
20. PAW110 2 61 3 HPAW130 2 59 3 HPAW155 aT 3 Always assume maximum possible load when considering cable sizing The cable supplying power from the consumer unit to the heat pump must be connected via an external 2 pole isolator This allows the service engineer to isolate the power supply before working on the heat pump in safety Boiler Total Total Load Load Current kW kW A 1 562 24 50 1 6 20 27 00 1 6 61 250 1 6 59 28 70 1 pay 29 50 Figure 8 6 Mains supply cable connections 20 3 8 Electrical 8 5 Heat Pump Wiring Diagram The Main Connections you have to make Fuse Compressor 230 Vac Compressor Heater MN 24 Vac E OO ans E IN o o da o E pol N CO k O 00000 m Yo A O a LL E LI Low pressure switch High pressure switch MA Orange 4 way Red 9 valve en E gt m EG NNI FI Y Expansion Valve O E LU Ret Gas Sensor Ext Temp Sensor Coil Temp Sensor Dis Gas Sensor my Ret Temp Sensor Power Supply Terminal E AIO OOLODIOOIOIOIO k ow 3kwW Electric Element Ld ATC Controller Socket 3 Connection points for installer S Plan Controls Connections Figure 8 7 Heat pump connection diagram for 3kW electrical element ATC
21. UK LIMITED G RA N T Hopton House Hopton Industrial Estate Devizes Wiltshire SN10 2EU Tel 01380 736920 Fax 01380 736991 Email sales grantuk com www grantuk com EFFICIENT HEATING SOLUTIONS BUSINESS REPLY SERVICE Licence No SCE15739 Guarantee Registration Grant Engineering UK Limited Hopton House Hopton Industrial Estate Devizes Wiltshire SN10 2EU
22. are housed within the heat pump one for the hot side the condenser which transfers the heat to the heating circuit and one for the cold side the evaporator Geothermal Geothermal is often mistakenly used to describe a ground source heat pump proper geothermal energy is where the energy from the earth s core is able to make its way near to the surface usually using hot water In the UK there are only a couple of sites where this type of energy extraction is feasible as it requires holes in excess of 2km deep Buffer Tank This is simply a large water cylinder that is used so we are told to improve the efficiency and durability of a system In fact it reduces the number of stop starts the compressor makes Heat Pump Rating A heat pump is given a kW heat output rating This value will vary depending on the working temperatures The electrical power input will be typically between a half and a quarter of the heat output Monovalent A monovalent system is one where all of the energy required for the heat load of the building is available from the heat pump Bivalent Bivalent systems are those which require an additional source to meet the buildings heat load 17 Warranty 17 1 The Grant Heat Pump Warranty Dear Customer You are now the proud owner of a Grant Aerona Air Source Heat Pump from Grant Engineering UK Limited that has been designed to give years of reliable trouble free operation Grant En
23. ase base of unit not shown Notes Condensate deflector omitted from below heat pump casing controller BIC controller omitted from control panel for clarity Figure 2 4 Main internal components Controls Lo em 0 o CC O Par 9 9 oO Qo Q V Controls Lo ao o c O pur i9 oO o Q V 2 Specifications and Controls 2 4 Heat Pump Curves 16 14 x 12 5 2 Water Flow O COP 4 1 A Ko I 10 U 10 20 30 40 Air Temperature in C Figure 2 5 Grant HPAW65 16 14 Weee aa III Water Flow 12 Temperature O 8 50 C 3 9 o E 6 al D I 2 U 10 U 10 20 30 40 Air Temperature in C Figure 2 6 Grant HPAW85 ld Water Flow B ag Temperature S 12 COP 6 8 O E 6 d D I 2 U 10 U 10 20 30 40 Air Temperature in C Figure 2 7 Grant HPAW110 Heat Pump Output in kW 16 14 12 10 O N A O COP 4 8 10 U 10 20 30 40 Air Temperature in C Figure 2 8 Grant HPAW130 Heat Pump Output in kW 14 12 10 O N A Oo COP 5 8 10 U 10 20 30 40 Air Temperature in C Figure 2 9 Grant HPAW155 1 NOTE All Grant Aerona heat pumps have been independently third party tested to BS EN 14511 The COP data given above is based on 7 C ambient air and 35 C water temperature This information should be used as guidance only and not to estimate the COP at other temperatures 2 5 Pump Curves W
24. building and safety code requirements NE Heating Load DHW Flow wall CH Return DHW Return Grant Aerona How Heat Pump valve E gt 05 D Primary sa Pump Flexible 3 pipe E S Isolating CU valve Return Figure 4 1 Monovalent system with S Plan type controls 4 2 Extended S Plan Type Monovalent Gi 1 i _4 pcc Bt UU Internal wiring HI EM AA i IOS PS Oylinder Stat DHW Flow Heat Pump ATC Outside wall Heating Load Grant Aerona io l N i O S e E i gt T Heat Pump 4 c Gm RN Isolating S E valve 3 E a D MI HRS T see od 5 Primary 5 A S Pump Flexible O pipe A d Isolating Ra valve Return Figure 4 2 Monovalent system with extended S Plan type controls Y i O O O 2 2 i gt Hm 4 Hydraulic Diagrams IMPORTANT The following system diagrams are only concept drawings and not detailed engineering drawings They are not intended to describe complete systems nor any particular system It is the responsibility of the system designer not Grant Engineering UK Ltd to determine the necessary components for and configuration of the particular system being
25. cs to 9 55 mins ee Always All M 1 t0 38 S OFF Warm Weather Shut Down G ES O 7 O 12 Servicing amp Maintenance 12 1 General Grant Aerona Heat Pumps require only the minimum of routine servicing and maintenance This basically consists of a visual check of the unit and should be regularly carried out e g annually to ensure that the heat pump continues to operate in a safe and efficient manner 12 2 Air Inlet and Outlet The air inlet grille and evaporator must be checked and leaves or any other debris removed from the space between the grille and the evaporator fins IMPORTANT Take care not to damage or distort the Aluminium fins of the evaporator when removing any debris Ensure that both the air inlet to the evaporator and the discharge from the fan outlet are unobstructed Any foliage plants etc near the heat pump must not be allowed to grow over the unit Under no circumstances should anything be stacked on or against the unit Refer to Section 3 1 for the required clearances around the unit 12 3 Condensate Disposal Check that condensate drain holes in the bottom of the unit are not blocked 12 4 Heating System Connections Check the condition of the flexible hoses Replace if damaged or leaking 12 5 Heat Pump Controls Check that settings on both the ATC and BTC controllers are as set when commissioned Refer to table of recorded settings on Page 34 of thes
26. ct the drop in cylinder temperature creating a demand for the heat pump to operate to re heat the cylinder The switched live to the boost kit relay will cease and the immersion element is de energised If the temperature detected by the cylinder thermostat does not fall to 45 C the immersion element will continue to operate via the relay to re heat the cylinder Figure 9 2 Connection of immersion element using DHW booster kit IMPORTANT This domestic hot water booster pack is optional and is IMPORTANT For this system to operate the existing immersion switch must be left set permanently to ON To totally prevent operation of the immersion element the existing immersion switch must be set to OFF PINA WARNING Two separate power supplies are connected to the DHW boost kit Do not install or work on this kit or remove the switch or cover without ensuring that BOTH supplies are isolated Fused Immersion switch Override switch NB No connection to Load N terminal is required Immersion element only used if the customer wants the most efficient form of heating their hot water If not then the BTC can be programmed to deliver hot water up to 60 C with no additional ey Figure 9 3 DHW booster kit with cover removed to show relay L o shd O L O pu o o z O e EN pag N gt V o o pan je S Ta 10 Filling the System 10 1
27. d Pressure gauge Filling loop kit isolation valve non return isolation valve and filling hose Figure 15 2 Automatic hot water boost kit Kit 3 Grant Ref HPAW55K50 50 litre expansion vessel kit For use on heating systems with a volume of up to 460 litres Kit contents 50 litre expansion vessel Wall bracket and fixing band 3 bar pressure relief valve Manifold Pressure gauge Filing loop kit isolation valve non return isolation valve and filling hose maximum system volumes shown for all sealed system kits are based on a vessel charge and initial cold system pressure of 1 bar 15 2 Immersion Heater Kits Kit 4 Grant Ref HPDHWBK1 Automatic domestic hot water boost kit with manual override This kit installed next to the hot water cylinder allows the stored hot water temperature to be automatically boosted in winter periods using the existing cylinder immersion element and thermostat Refer to Section 9 for further details Kit contents Double patress c w relay Blanking plate Water heater switch N i ES je d 0 O O lt o d ea Mem o D o o 16 Glossary of Terms Efficiency The word efficiency is defined as the ratio of useful heat output to energy input For example if we use 1 kW of energy to produce 500W of heat it is deemed to be 50 efficient Entropy Loosely speaking when a system s energy is divided into its useful energ
28. designed including any additional equipment and safety devices to ensure compliance with building and safety code requirements The following are examples of suitable systems 4 3 S Plan Type Bivalent A Dm V V i Internal Wiring T V m V uc i Programmer 1 X QC EE centre L Heating Load Heat Pump ATO Boiler Outside me wall Grant Aerona Flow Heat Pump CH Return DHW Return el Isolating valve D 4 1 i o B5 Ba Pump Flexible O pipe EN Auto Bypass Isolating valve Return Figure 4 4 Bivalent system with boiler manifold and S Plan type controls 4 4 Extended S Plan Type Bivalent d E i 1 EEE ERAN 10 1 Q O iam d a E E D mm G rahmen Heating Load Heat Pump ATC Boiler Heating Load I Outside wall sal EU ST amt aa ee sey dl Grant Aerona Heat Pump CH Return DHW Return 3 Boiler G le D o manifold gt E Flexible A Auto Bypass m O pipe Isolating valve Figure 4 6 Bivalent system with boiler manifold and extended S Plan type controls 0 p O O O 9 E ES y gt I Y i O O e 3 i gt Hm 4 Hydraulic Diagrams IMPORTANT The f
29. e Instructions Reset to commissioned settings as necessary 12 6 Refrigerant Under no circumstances should the refrigerant be vented from the charging points on the refrigerant circuit of the Heat Pump If any work is required to be carried out on the refrigerant circuit it MUST be undertaken by an F gas registered refrigeration Engineer or equivalent On no account should any such work be carried out by unqualified personnel PINA WARNING If it is necessary to carry out any remedial work on the Heat Pump e g replacement of the flexible hoses switch the heat pump to off set the on off switch on the ATC controller to OFF and isolate the electrical supply at the external isolator and at consumer unit MCB BEFORE starting any work on the heat pump or system Maintenance 05 O 2 gt p m o O G iL Tw 13 Fault Finding 13 1 Fault Finding Flow Chart BEGIN HERE Is there Is the external Has MCB or No Not sure power to the isolator turner on RCD tripped heat pump STOP Call the helpline for Is there a demand from assistance the heating system Turn on Is Reset MCB system working or RCD i Is heat pump in Is ATC in the defrost mode automatic position Is there continuity Does heat pump between terminal 1 amp run without 2 and 1 amp 3 at Heat tripping Pump control panel Press M on the ATC see note 1 until the sun symbol
30. e Je E e fe ll SIS Qo Fuse OJO QVO E OE Heat pump a DHW el Zone Valve Zone Valve Fuse E bo Programmer Room Thermostat pb S O 9 IO B E T i Circulating Pump Heat Pump E O UE Compressor PER H l y u Relay 2 in heat TE NG pump control 230V 50Hz pe a Controller i Figure 8 12 Bivalent system connection diagram 8 Electrical SSS 230V 24 Vac Transformer Return sensor H Supply sensor L u Outdoor sensor BTC OSOS SOI OOOO 2 9 e T t e ET e e fet FE 5 Fuse Heat Sin conte connections amp 9x99 HT ET a s Ela a Bl E E es EI Sllbile eleele DHW Zone Valve i Control O20 elsi Du c tee xe pe T 9 Cylinder Thermostat Programmer Room Thermostat 3 kW Q 2 Immersion da ip Circulating Pump Heat Pump element O lg _ Compressor PCH an Relay 2 in heat LN pump control 230V 50H2 l ui pa
31. e Monovalent Bivalent If Bivalent System other heat source s Gas Boiler Oil Boiler Biomass Boiler Other specify Heating System tick all that apply Radiators only Underfloor only Radiators amp Underfloor Hot Water Cylinder Swimming Pool Heater Thermal Store a Date installed een een en en ee SS oo eR ooa County e e he sv ev hes seses Postcode Commissioning Engineer if different Date Commissioned _ _ ee IU M ee A Qon c A AS e Post code oooooooooconooa Do you own a Grant Oil Boiler Yes No Grant Solar Thermal System Yes No u Grant Pellet Boiler Yes No u Grant Solar PV System Yes u No u Grant Hot Water Cylinder Yes No u Grant Thermal Store Yes No GRANT EFFICIENT HEATING SOLUTIONS GRANT ENGINEERING UK LTD Hopton House Hopton Industrial Estate Devizes Wiltshire SN10 2EU Telephone 01380 736920 Fax 01380 736991 Email info grantuk com Website www grantuk com Guarantee Registration Card Grant Air Source Heat Pump Guarantee Air to Water Heat Pump Range e 2 years parts and labour cover on all electrical and mechanical components eExtended warranty available Contact Grant for details Important Don t Delay Please complete the attached reply paid guarantee registration card and return it to GRANT ENGINEERING
32. eating Fuse Programmer Room Thermostat P H 4 85316 G DHW Zone Valve Heat pump S Plan controls connections Figure 8 14 Connection diagram for Grant solar thermal system Solar controller Panel sensor Cylinder sensor La o aja o T 2 3 o o o e 9 Domestic Hot Water 9 1 Temperature Control The desired hot water temperature stored in the cylinder can be adjusted on the BTC controller As already mentioned the heat pump works most efficiently at lower temperatures but these temperatures are not suitable for domestic hot water which should always be stored at about 60 C 9 2 Heat Pump Cylinders As the water temperature from the heat pump is lower than traditional systems a much larger coil is required inside the cylinder to transfer the heat efficiently Grant Engineering has a range of 7 stainless steel cylinders from 90 litres to 300 litres with coil areas of up to 3 5m Visit www grantuk com for more a a a C 54 230V 24 Vac Transformer information These cylinder have been designed to match the output from the Grant Aerona heat pumps for maximum efficiency and faster re heat times when compared to standard type indirect cylinders 9 3 Temperature Boost It is possible to use the heat pump to raise the DHW temperature to 60 C During the summer this may be preferable when the
33. emand on the heat pump WWSD is active when WWSD appears on the display of the BTC MCB s and RCD can trip for a variety of reasons Here are some common explanations but o c Na o o gt Q For diagram of 6KW immersion heater refer to Figure 8 9 remember only qualified electricians can work on power installations If you are in any doubt call an electrician not our helpline we will only direct you to call an electrician Incorrect rating or type of MCB RCD A component leaking to earth A component with a dead short Incorrect polarity Incorrect cable size Damaged cable or component O E G TS gt LL 13 Fault Finding 5 When tracing a fault code use the table of fault codes on page 32 to help you As often as not it will be a wire that has become loose or disconnected Check all wires for security before calling our helpline for assistance There are 6 sensors in total The ATC have black tails and the BTC have blue tails The resistance temperature tables for the ATC and BTC sensors are given in Figures 13 2 and 13 3 connections even with the mains voltage removed Seek the help of a qualified electrician or a qualified heating engineer who has been trained by Grant Engineering it cannot get rid of the heat it is producing This will be evident if when switched on from cold or warm the gauge rises quickly towards the yellow or red zones If this happens switch of
34. es of radiator O C O gt S O O Radiator Sizes o oO p o gt Mm Lo o v Mm 7 Sealed Systems The following components are required to use the Grant Aerona heat pump as part of a sealed heating system Due to the lack of space these components are not located within the heat pump but have to be fitted external to the unit a expansion vessel of the correct size to suit the volume of the system Pressure relief valve 3 bar e Pressure gauge e Filling loop Tundish D These items may already be installed on the existing system If so they should be checked to ensure the integrity and suitability of the components before proceeding to re use them Refer to Section 14 for details of the Grant sealed system kits designed for use with the Grant Aerona heat pump range The expansion vessel can be fitted to either the flow or return pipes but ensure that there is no automatic or manual valve in line that may prevent the heat pump utilising the expansion vessel a Ze aa Pa EGET The filling loop can be sited anywhere in the system but it must always be sited within visual distance of the pressure gauge The nominal filling pressure for the system when cold is 1 bar Before filling the system check the expansion vessel charge pressure This should be 0 2 0 3 bar higher than the cold fill pressure for the system It is
35. existing consumer unit or from a newly installed consumer unit This work MUST be carried out by a qualified electrician or by a Part P competent installer who has passed an examination proving their competency in these works Failure to follow this legislation will invalidate all warranties Please seek advice from a competent person before commencing any electrical work c O Ko Ko O d Y P o E le O Contents Stop Legislation Contents 1 Introduction 1 1 General Information 1 2 Warranty 1 3 Important Advice 1 4 Immersion Heater 2 Specifications and Controls 2 1 Specifications 2 2 Dimensions 2 3 Main Components 2 4 Heat Pump Curves 2 5 Pump Curves 2 6 Operating Sequences 2 7 Controls 3 Siting the Heat Pump 3 1 Position 3 2 Orientation 4 Hydraulic Diagrams 4 1 S Plan Type Monovalent 4 2 Extended S Plan Type Monovalent 4 3 S Plan Type Bivalent 4 4 Extended S Plan Type Bivalent 4 5 Buffer Tanks 4 6 S Plan with Buffer Monovalent DA AN B OQ m p N a a a d o N o 9 10 11 12 12 4 7 Extended S Plan with Buffer Monovalent 13 System Design Criteria Calculating Radiator Sizes Sealed Systems Electrical 8 1 General 8 2 Basic Circuits Making the Connection 8 3 Controller 8 4 Mains Supply Cable 8 5 Heat Pump Wiring Diagram 8 6 System Control Wiring Diagrams 8 7 Wiring Diagrams 8 8 Bivalent Systems 8 9 Extending the Electrics 14 15 1
36. f and purge the system Remember to check the circulating pump is working 8 This is a repeat of note 5 If the heat pump goes out on high pressure it will almost certainly be as a result of an air lock An air lock that cannot be cleared by the pump will have the same effect as that of an ordinary boiler It will overheat as it cannot get rid of the heat it is producing This will be evident if when switched on from cold or warm the gauge rises quickly towards the yellow or red zones If this happens switch off and purge the system Remember to check the circulating pump is working In normal working conditions the pointer on the gauge will remain in the green zone 7 Capacitors store an electrical charge Small capacitors are found in all domestic electronics and cause no danger However the capacitors in a heat pump are power capacitors and will give a large electric shock if care is not taken DO NOT try to test the functionality of a capacitor using a screwdriver or multi meter and NEVER try to short out the 6 The pressure gauge on the side of the heat pump measures refrigerant pressure not water pressure and is a useful tool to help fault finding If the heat pump goes out on high pressure it will almost certainly be as a result of an air lock An air lock that cannot be cleared by the pump will have the same effect as that of an ordinary boiler It will overheat as ATC Temperature Resistance Tempe
37. gineering UK Ltd guarantees the manufacture of the heat pump including all electrical and mechanical components for a period of two years from the date of purchase Provided that the card is completed and returned to Grant UK the heat pump is installed In full accordance with the installation instructions provided and it is serviced after 12 months operation See Terms and Conditions Important Please complete the guarantee registration section then detach the card and return it within 30 days of the installation of your Grant Air Source Heat Pump Breakdown during the Manufacturer s Warranty If your Grant Heat Pump should fail during the first 2 years you Must contact Grant Engineering UK Limited who will arrange for the repair under the terms of their Warranty providing that the system has been correctly installed and commissioned serviced if older than 12 months and the fault is not due to misuse or the failure of any external components not supplied by Grant UK e g pipework etc In the first Instance Contact your installer or commissioning engineer to ensure that the fault does not lie with the system or any other components If a Fault is Found Ask your installer to contact Grant Engineering UK Limited Service Department on 01380 736920 who will arrange for a qualified service engineer to attend to the fault Free of Charge Repairs During the first 2 years no charge for parts or labour
38. heat pump For optimum performance after installation this heat pump and the central heating system must be flushed in accordance with the guidelines given in BS 7593 1992 Treatment of water in domestic hot water central heating systems This must involve the use of a proprietary cleaner such as Betz Dearborn Sentinel X300 or X400 or Fernox Restorer For long term protection against corrosion and scale after flushing it is recommended that an inhibitor such as Betz Dearborn Sentinel X100 or Fernox MB 1 is used in accordance with the guidelines given in BS 7593 1992 Full instructions on the correct use of System cleaners and corrosion inhibitors are supplied with the products but further information can be obtained from www betzdearborn com and www fernox com Failure to implement the above guidelines by fully flushing the system and using a suitable corrosion Inhibitor will invalidate the Heat Pump product warranty 10 3 Antifreeze To avoid the risk of the freezing in the external section of the heating system i e the flexible hoses condenser and circulating pump within the heat pump casing in the event of power failure during winter months a suitable domestic heating system antifreeze should be used This is added to the system water when finally filling the heating system Full instructions are supplied with the System antifreeze but immediate information can be obtained from www betzdearborn com a
39. his manual All other controls programmers motorised valves thermostats etc are not supplied but their use is covered in Sections 4 and 8 of this installation manual Power 24 V 10 50 60 Hz 2 5 VAO 1A H6090A Pump HP relays 230V ac 5 A 1 6 hp i B ac or dry conta emand inputs ct INSTALLATION CATEGORY II E C Figure 2 11 ATC Controller Figure 2 12 BIC Controller Controls Lo ao o c o pur O E oO Qo Q V 3 siting the Heat Pump 3 1 Position 1 Base The heat pump should be installed on a flat trowelled finished concrete base 150mm thick This base should extend at least 100mm beyond the unit on three sides The edge of the concrete base on the side closest to the building should be flush with that face of the heat pump Refer to Figure 3 1 To avoid bridging the DPC leave a gap of at least 300mm between the concrete base and the wall of the house Edge of base flush with rear of heat pump DPC The Underside of the heat pump is fitted with a condensate deflector 200mm min above that directs the condensate to the groungeye rear of the unit To allow this condensate to safely drain away XE e there should be a shallow trench at g i 150mm least 150mm wide filled with stone an chippings along the rear edge of Trench with chippings the concrete base This trench can Figure 3 1 Installation details extend across the gap between the co
40. ilo Classic Star Pump Head metres Flow m3 h Figure 2 10 Pump curve for HPAW65 HPAW85 HPAW1 10 amp HPAW130 15 5kW Pump Curve O Pump Head metres m m3 h Figure 2 11 Pump curve for HPAW155 2 6 Heat Pump Operating Sequences ON Q O pus ud O O Lo 9 o O dud qe S oO o Q V OFF i 4 way _ OFF OFF I 1 l valve I ON LO l Demand OFF ON OFF E OFF A Defrost EET E 1 I l signal 1 I l 1 NEN O 10 60 off BIC Time secs O 2530 O 530 Time secs on Pump delay on off time Figure 2 12 Normal operating sequence Figure 2 13 Defrost cycle 5 2 Specifications and Controls 2 7 Controls All Grant Aerona Heat Pumps are supplied with 2 controllers 1 x heat pump controller ATC and 1 x temperature controller BTC The ATC is positioned inside the house building and is normally used in an automatic condition There are a few parameters that can be adjusted including time and maximum water temperature The details of these settings can be found in Section 11 of this manual The BTC is a split temperature controller located inside the heat pump For many installations the DHW temperature and the CH temperature will be different The BTC allows for 2 different design temperatures to be entered maximising the efficiency of the Grant Aerona heat pump The details of these settings can be found in Section 11 of t
41. ing valve on the cold water supply Gradually open the filling valve on the heating circuit at the other end of the filling loop until water is heard to flow into the system Fill the system until the required System pressure is indicated on the sealed system pressure gauge as supplied in the Sealed System kit Then close both filling valves 5 Vent each UFH circuit and then each radiator in turn starting with the lowest one in the system to remove air 6 It is important the circulating pump s are properly vented to avoid them running dry and the bearings being damaged 7 Check the operation of the safety valve as supplied in the Sealed System kit by turning the head anticlockwise until it clicks The click is the safety valve head lifting off its seat allowing water to escape from the system Check that this is actually happening 8 After venting check system pressure and top up using the filling loop as required 10 2 Flushing and Corrosion Protection To avoid the danger of dirt and foreign matter entering the Heat pump the complete heating system should be thoroughly flushed out both before the heat pump is operated and then again after the system has been heated and is still hot This is especially important where the heat pump is installed as a replacement for a boiler on an old system In this case the system should be first flushed hot before the old boiler is removed and replaced by the
42. l 3 C 50 to OC BOIL START 1 Always All 21C 110 656 BOIL DSGN 1 Always Al 480 21 to 104 C BOIL MAX 0 Always All 5956 48 to 107 C OFF BOIL MIN 0 Always Al CRF OF 20 105546 MASS 0 Always All 1 lo 1 lo lt gt 2 med lt gt 3 HI DIFF 0 Always Al AU AU 1 to 29C DHW BOIL TARGET 0 Always Al 48 C Ome 2118 128 pump DLY U Always All 20 secs OFF 20 secs to 9 55 mins a a 1 Always All 24 C 1 to 38 C OFF Notes a Access 1 is available at all times To access settings menu with access O remove the front control panel cover then remove the screw at the base of the BTC Select the DIP switch 1 to ON When the parameters have been set switch the DIP switch back to OFF and replace the cover b OUTDR START and BOIL START must always be the same figure c These settings are suitable for a system design of 3 C to 21 C If any other design criteria is used alter these settings to match the design d If a buffer or thermal store is being used change MASS to a suitable setting e g MASS 1 lo for Monovalent system no buffer or thermal store MASS 2 med for Bivalent system no buffer or thermal store MASS 8 Hi for Bivalent system with buffer or thermal store e DHW BOIL TARGET of 48 C assumes the cylinder thermostat setting of 45 C and thereafter heated by an auxiliary source e g immersion element boiler etc f Pump Delay should be set for about 2 minutes g WWSD should always be set 3 C higher
43. lay Inlet water temperature sensor failure PP Coil temperature sensor failure PPO Ambient temperature sensor failure PPO Winter anti freeze protection PP T High pressure EE 1 Low pressure EE 2 Flow switch EE 3 Wrong miss phase EE 4 Electrical shock protection EES Defrosting Defrosting indicator communication failure EES Figure 13 4 ATC fault codes Item Field Num Field Display E01 Err EEprom read error BOIL OUT SHr HP Flow sensor short BOIL OUT OPn HP How sensor open BOIL IN SHr HP return sensor short BOIL IN OPn HP return sensor open SIE SHr Supply sensor short SUP OPn EE 3Supply sensor open OUTDR SHr Outdoor sensor short OUTDR OPn Outdoor supply sensor open Figure 13 5 BTC fault codes Temperature C 32 35 38 41 43 46 49 52 54 of 60 63 66 68 Resistance kQ 1 334 6 532 5 828 3 210 4 665 4 184 3 760 3 383 3 050 2 104 2 490 2 255 2 045 1 857 Temperature ic Resistance Q 1 689 1 538 1 403 lol 1 172 1 073 983 903 829 163 703 648 998 993 O TR TW 14 Spare Parts List Power capacitor 24 Vac Transformer Figure 14 1 Heat pump control panel components Part Number Description HPAW65 HPAW85 HPAW110 HPAW130 HPAW155 HPAS10 Power capacitor 5OuF 1 1 U U U HPAS11 Power Capacitor 60uF U U 1 1 U HPAS12 Power Capacitor 7OuF U U U U 1 HPAS13 Power capacitor 100uF U U 1 1 1 HPAS14 Fan Capacitor 4uF 1 U U U U HPAS15 Fan Capaci
44. m the radiator manufacturers correction factor table for AT 24 C factor 0 406 For a design heat loss of 1 8 kW the required corrected output is 1 8 0 406 4 43kW Select a radiator from manufacturer s information that would give 4 43kW output at 75 C mean water temperature this will give the required 1 8 kW output at 45 C mean water temperature produced by the heat pump Similarly for a bedroom with the same design heat loss but design temperature of 18 C The AT 45 C 18 C 27 C From the radiator manufacturers correction factor table for AT 27 C factor z 0 46 For a design heat loss of 1 8 KW the required corrected output is 1 8 0 46 3 48kW Thus select a radiator from manufacturer s information that would give 3 48kW output to give the required 1 8 KW output at 45 C mean water temperature For an UFH system with a mean water temperature of 35 C For a design heat loss of 1 8kW and a design room temperature of 18 C The AT 35 C 18 C 17 C From the radiator manufacturers correction factor table for AT 17 C factor z 0 26 For a design heat loss of 1 8 KW the required corrected output is 1 8 0 26 6 92kW Thus select a radiator from manufacturer s information that would give 6 92 kW output to give the required 1 8 KW output at 35 C mean water temperature Where possible reference should be made to radiator manufacturers own information for the correction factors for different typ
45. n 30 C and 60 C The return temperature will depend on the load of the system at a given point in time The design of any system in the UK is typically based on 2 parameters 1 That the outside air temperature can fall to as low as 3 C and that the house comfort temperature will be 21 C The BTC incorporated in the heat pump will adjust the output according to the external ambient air temperature but the system must be designed in the first place to meet this maximum demand 2 The second factor to consider is achieving this maximum demand using much lower water temperatures than with oil or gas fired appliances Designing a new system for use with a low grade heat source is straight forward and assuming the insulation properties of the dwelling meets or exceeds current building regulations there should be no issue with achieving the heat demand It must be understood that your final design working temperature will have an effect on the overall system efficiency the COP of the heat pump and the complete system Put simply the lower your design working temperature the better the COP If you are in any doubt about the suitability of the heating system stop and seek the advice of a qualified heating engineer or experienced system designer The use of a heat pump in an existing system can be straightforward if the following rules are followed 1 The loft has insulation to a depth of 270mm 2 Cavity wall i
46. ncrete base and the house minimum distance 300mm but the chippings must be below the building DPC level Concrete base 2 Clearances The Heat pump should have a minimum of 300mm from the rear of the unit to any wall and not have IMPORTANT any obstruction within 1000mm S E from the front or either side of the It is essential that the condensate is able to drain unit Do not red tb CE LO away and not allowed to run onto any adjacent against any part of the heat pump paths or driveways where in winter this will result under any circumstances Do not in icing and a potential hazard for anyone walking insert objects into the fan guard near the heat pump 3 Noise Level All heat pumps make a noise Discuss the potential nuisance The top of the concrete base must be either level with or above the surrounding ground level Always ensure factor with the end user when at least 200mm vertical clearance between the considering the final position of the surrounding ground level and the underside of the IA opening windows and doors into account It is not heat pump to allow for adequate air movement Refer essential for the heat pump to be to Figure 3 1 for details positioned next to a wall of the house Behind an out building may be more suitable so discuss the options with the end user 4 Insulation Remember all pipe work irrespective of length must be well insulated to prevent heat loss The use of barrier
47. nd www fernox com 11 Commissioning 11 1 Switching on First Time When switching on for the first time carry out the following procedures in the order they appear 1 Ensure the external mains power isolation switch is set to the OFF position 2 Energise the heating system inside the house 3 Create a CH demand using the timer programmer 4 Confirm the CH motorised valve has opened You may need to adjust the room thermostat to achieve this 5 At the heat pump control panel confirm there is no voltage present between terminal 1 and 2 on the S Plan connections in the Heat Pump control panel check there is continuity If voltage is present 230Vac check the wiring as shown on page 20 and correct as necessary 6 Remove CH demand 7 Create a DHW demand if applicable using the timer programmer IMPORTANT 10 T1 12 13 14 15 16 Confirm the DHW motorised valve has opened You may need to adjust the cylinder thermostat to achieve this At the heat pump control panel confirm there is no voltage present between terminal 1 and 3 on the S Plan connections in the Heat Pump control panel check there is continuity If voltage is present 230Vac check the wiring as shown on page 20 and correct as necessary Create a CH and DHW demand using the timer programmer Confirm the CH and DHW motorised valves have opened Switch the external isolator to ON Check
48. nd when again for its suitability and replaced with the system temperatures fell to 70 C one of the correct size output if flow and 50 C return necessary Below is a typical radiator conversation factor table and a worked example of sizing radiators for use with a heat pump Correction Factor 5 0 050 10 023 15 Ores 20 0 304 25 0 406 30 0 515 35 0 629 40 0 748 45 0272 50 1 000 55 ae 60 1524951 65 1 406 19 1 549 TD 1 694 As can be seen the size of radiator required will be larger than conventional Systems This can be controlled to an extent by choosing a suitable design water temperature The trade off will be a slightly lower COP As we have already discussed the higher the running temperature the harder the heat pump has to work to reach the desired temperature Please advise the customer that in any case the radiator will not get hot The perception may well be that the system is not working correctly because the radiators are only warm A typical heat pump operating to feed radiators will run at a flow temperature of 50 C and a return temperature of 40 C giving a mean water temperature of 45 C Inthe case of a system using both radiators and Underfloor heating UFH a flow of 40 C and a return of 30 C giving a mean water temperature of 35 C would usually be preferred For a living room with a design temperature of 21 C and heat loss of 1 8kW The AT 45 C 21 C 24 C Fro
49. nel Controller Figure 8 13 Monovalent system connection diagram 8 8 Bivalent Systems For bivalent systems it is necessary to disconnect the internal immersion element from the relay inside the heat pump control panel Taking the live and neutral outputs from this relay extend this wire to the boiler Isolate this cable through a fused double pole spur switch and mark on the switch that the supply comes from the heat pump IMPORTANT 8 9 Extending the Electrics It may be part of the system design to incorporate Solar Thermal into the design This is easily done with the use of an additional two pole relay Following the diagram in Figure 8 13 below will give the solar thermal system a priority over the heat pump when there is a demand for DHW only This can of course be added to both monovalent and bivalent systems It is much easier to carry out all these types of systems based on S plan type controls only Y and W type plans can be used but the need for additional relays is not practical It is much easier to convert Y and W type plans to S types from the start Do not take the Neutral from the heat pump to feed the boiler circuit This will create an imbalance at the MCB and cause nuisance tripping Always take the neutral supply from the existing S Plan wiring centre Follow the wiring diagram as shown in Figure 8 11 for a bivalent system G i 9 Off H
50. not affect the consumer s statutory rights If a Grant Engineer is required to visit the site and no fault is found with the heat pump a charge will be made for this visit The original caller will be responsible for this charge Refer to Section 17 for full details of the Grant Heat Pump warranty 1 3 Important Advice 1 It is essential that the full layout of the system is understood before the installation of any component is undertaken If you are in any doubt please stop and seek advice from a qualified heating engineer or from Grant Engineering UK Ltd Please note that Grant Engineering will not be able to offer specific advice about your system unless we designed it In this case we will always refer you to seek the advice of a qualified system designer 2 The Heat Pump must be installed and commissioned in accordance with these installation instructions Deviations of any kind will invalidate the warranty and may cause an unsafe situation to occur Please seek advice from Grant Engineering UK Ltd if any of these installation instructions cannot be followed for whatever reason Grant Aerona heat pumps should be stored and transported in an upright position If not the heat pump MUST be positioned in an upright position for at least 4 hours before being operated 3 The heat pump contains high pressures and high temperatures during normal working conditions Care must be taken when accessing the internal w
51. nsulation has been installed 3 The radiators have been changed or upgraded to match the new water temperature 4 An accurate heat loss calculation for each room of the house has been carried out 5 All primary and secondary pipes have been well insulated to prevent heat loss While underfloor heating is the preferred heat emitter a combination of underfloor heating and radiators or radiators only works just as efficiently It is necessary however to calculate the size of radiator required accurately if this is not done the house will fail to reach the target temperature and will be costly to rectify after the installation is complete Hefer to Section 6 to determine the size of radiators required for your installation Criteria D o o e GL ded N gt o 6 Calculating Radiator Sizes Existing systems Most existing wet heating systems will use radiators as emitters When the original system was installed the radiators would have been sized according to the manufacturer s specifications Typically this would have been 82 C flow and 71 C return with the connections being flow at the top and return at the opposite bottom corner With the advent of condensing boilers However as heat pumps work at most installations were found to have temperatures lower than even this it is oversized radiators and as such little or important that each radiator is checked no adverse effects were fou
52. ode UA a b Target superheat F F 3 Factory Set C Manual control paces of EEV 0 0 SO Factory Set d Temperature point to start electrical element ambient 5C to 5C 3C Adjustable F Coil temp Heading 10 Return gas temp 9 99 C Reading 11 Ambient temp 9 99 C Reading 12 Tank water temp 9 99 C Reading 18 EEV actual open paces 9 99 C Reading Description Default Comments Take a note of these settings and write them in the Commissioning sheet in section 16 IMPORTANT Do not adjust Factory Set parameters unless instructed by Grant UK to do so Additional Operating Information about the ATC Fan Motor Operation 1 Normal night time working mode when Parameter A set to 1 Refer to Table of ATC Parameters above a When in heating mode CH or DHW fan motor starts up to 60 seconds before compressor starts b When ambient temperature is higher than 25 C fan motor switches to low fan When ambient temperature is lower than 28 C fan motor switches to high fan c During period 20 00 to 8 00 next morning fan motor switches to low speed time according to the ATC clock d During all other periods fan motor works at full speed according to ambient temperature e During defrosting fan motor works according to defrost mode parameters 2 Normal daytime working mode when Parameter A set to O Fan operates as described above for night time operation but with NO Low speed fan
53. ollowing system diagrams are only concept drawings and not detailed engineering drawings They are not intended to describe complete systems nor any particular system It is the responsibility of the system designer not Grant Engineering UK Ltd to determine the necessary components for and configuration of the particular system being designed including any additional equipment and safety devices to ensure compliance with building and safety code requirements 4 6 S Plan with Buffer Monovalent Heat Pump ATC Grant Aerona Heat Pump Outside er wall valve D E 72 s ES i 5 Primary Flexible E E Pump A O Isolating ed valve NW t Return 4 5 Buffers Tanks The use of a buffer with the current Aerona heat pump is not necessary in the majority of installations However it is possible to utilise a buffer if the end user wishes to store hot water when there is no other demand placed on the system There are two main considerations when deciding when and where a buffer tank should be used 1 It may act as an initial boost when a heating demand is placed on the system from cold 2 Storing water for this function will result in heat losses from the buffer over time reducing the overall COP and therefore the overall efficiency of the heat pump and the system ame osa PEMEX ne Internal wiring TN ce centre M Cylinder
54. ontrol panel The DHW boost pack contains a power relay and an additional 2 pole isolator Figure 9 1 Connection diagram for DHW booster system NB Setting this override switch to OFF does not stop the automatic operation of the immersion element The required relay manual override switch and enclosure are available from Grant Engineering UK Ltd as a kit For details of this Automatic Domestic Hot Water Boost Kit Grant Ref HPDHWBKI refer to Section 15 of these instructions When fitted this kit interrupts the electrical supply between the existing immersion heater and the fused immersion switch Refer to Figures 9 1 and 9 2 for electrical connection details With the cylinder thermostat set to 45 C when the heat pump raises the DHW cylinder to this temperature the cylinder thermostat switches to the satisfied position The resulting switched live from the auxiliary normally open contact of the cylinder thermostat Supply from cylinder thermostat auxiliary contact Earth connections between fused immersion switch override switch and immersion element not shown operates the relay in the booster kit and energises the existing immersion element in the cylinder controller and protected by its internal thermostat and limit thermostat The immersion heater thermostat should be set to 60 C When hot water is drawn off if the temperature falls below 45 C the cylinder thermostat will dete
55. orkings of the heat pump 4 The heat pump contains an electrically driven fan which rotates at high speed Disconnect the heat pump from the electrical supply before removing the top cover 1 4 Immersion Heater All Grant Aerona Heat pumps are supplied with a factory fitted SkW immersion element This is designed to operate at low ambient air temperatures to increase the output of the unit to meet the design heat load Refer to Section 11 of these instructions for details of the automatic operation of the immersion element If required all Grant Aerona Heat pumps are available with a 6kW back up immersion element in place of the standard 3kW unit This is a factory fitted option ONLY and must be specified when ordering the heat pump For the starting and running current along with the required MCB rating type for units with either the 3kW or 6kW immersion elements refer to Section 8 page 21 of these instructions o c O p Q JO O pe Par General Information O Q o 55 pS Cc QO O Q O Y 2 Specifications and Controls 2 1 Specifications Model Heating Capacity Input Power Running Current Power supply Phase Frequency Mechanical Protection Refrigerant Mass of R407c Built In Immersion Circulating Pump Flow Rate Sound Level at 1m Water Connections COP Air 7 C Water 35 C Weight empty Weight full 2 2 Dimensions KW KW Hz 9 KW m head litre
56. ot the heat pump MUST be positioned in an upright position for at least 4 hours before being operated G E 9 o te O G 9 Dp OD le 11 Commissioning 11 2 Setting the ATC Controller The main purpose of the ATC controller is to give an overall maximum temperature control over the heat pump In contrast the BTC controller will give accurate control over both CH and DHW temperatures even if they each have different target temperatures There are 3 main conditions the ATC can be set in 1 OFF no signal to the heat pump irrespective of other heating controls THE HEAT PUMP WILL NOT OPERATE IN THIS CONDITION 2 Automatic Sun Symbol The heat pump is in a fully automatic condition Conditions such as running defrosting frost protection are all operative 3 Stand by Triangle Symbol Only basic functions are possible Frost protection and back up heater will not operate Press the M button to switch between Automatic and Standby settings The ATC also has a series of fault codes which will help in any fault diagnosis should an internal fault occur Hefer to Section 13 3 for details Set the time function on the ATC using the following procedure 1 Press the SET button twice The hour segments will flash Using the AV buttons to alter the hour setting 2 Press the SET button again to set the minutes Using the AV buttons
57. plastic pipe together with double thick insulation is strongly recommended particularly when considering longer pipe runs Q a kad O Qo L Qo a pus O V Q a kad O 0 T o d em p O Le Q 3 siting the Heat Pump 3 2 Orientation The North face of a building will usually have colder ambient air than any other side To ensure maximum efficiency from the Grant Aerona heat pump position the unit on a warmer side In order of preference site the unit on a South face followed by either South East or South West then by East or West Only install on a North face if there is no other alternative Cooler ambient air Figure 3 2 Location of air source heat pump 4 Hydraulic Diagrams The following are examples of suitable systems IMPORTANT 4 1 S Plan Type Monovalent The following system diagrams are only concept drawings and iimtemalWilhg 777 panaman not detailed engineering rn centre i Programmer drawings They are not intended l i to describe complete systems nor any particular system a a a a A A TA l l l l l l l l l It is the responsibility of the system designer not Grant sosss gt d Engineering UK Ltd to determine the necessary components for and configuration of the particular system being designed including any additional equipment and ema safety devices to ensure ATC compliance with
58. r equivalent refrigeration Engineer On no account should maintenance or repair be carried out on the refrigerant circuit by unqualified personnel Information regarding the refrigerant used in this Heat Pump R407c R407C is a mixture of three refrigerants each of which boil at different temperatures R407C has a range or glide of approximately 5 C The lubricating oils used in this heat pump are known as Polyolester or POE oils They are considered to be superior oils less liable to breakdown however they are more hygroscopic they must therefore be kept from contact with air as far as is practical Information regarding the charging recharging of the unit Always add R407C as a liquid to ensure that the correct mix is added Charge the heat pump with the correct weight of refrigerant See data plate for this information Never top up refrigerant Always recover the remaining refrigerant first for recycling Information regarding a refrigerant leak or if the circuit is opened accidentally Hecover the remaining refrigerant as quickly as possible for recycling Avoid entry of air into the heat pump as much as possible Heplace or install a drier if necessary LEGISLATION The installation of the Grant Aerona Heat Pump requires a power supply cable from the customer s consumer unit to an external isolation switch and from this switch to the heat pump It will require a final connection to an individual MCB or RHBO within the
59. rature Resistance Temperature Resistance Temperature Resistance C kQ kQ C kQ C kQ Figure 13 2 ATC sensor resistance table 20 37 4111 13 0055 24 0 1978 46 2 3276 SI 35 5384 12 4391 25 5 0000 47 2 2493 e 33 7705 11 9008 26 4 8109 48 2 1740 Il 31 1009 11 3890 21 4 6300 49 2 1017 16 30 5237 10 9023 28 4 4569 DU 2 0320 215 29 0333 10 4393 29 4 2912 o1 1 9651 14 27 6246 9 9987 30 4 1327 52 1 9007 ss 20 2927 9 5794 31 3 9808 53 1 8387 qu 25 0330 9 1801 32 3 8954 54 1 7790 11 23 8412 8 7999 33 3 6961 55 1 7216 10 22133 8 4377 34 3 5626 56 1 6663 9 21 6456 20925 30 3 4346 57 1 6131 8 20 6345 1 7039 36 3 3120 58 1 5618 cf 19 6768 7 4498 37 3 1943 59 1 5123 6 18 7693 7 1906 38 3 0815 60 1 4647 5 17 9092 6 8652 39 ASS 61 1 4188 2 4 17 0937 6 5928 40 2 8694 62 1 3746 o 3 16 3203 6 3328 41 2 1097 63 os 2 15 5866 20 6 0846 42 2 6740 64 1 2908 ES zi 14 8903 21 9 8475 43 2 5821 65 1 2511 E U 14 2293 22 5 6210 44 2 4939 66 1 2128 Li 1 13 6017 23 5 4046 45 2 4091 BTC Temperature e 46 43 40 37 34 85 29 26 E 21 18 15 2 9 Resistance kQ 490 813 405 710 336 606 280 279 234 196 196 358 165 180 139 402 118 018 100 221 85 362 12 918 62 465 53 658 Temperature Resistance kQ 7 46 218 4 39 913 1 SADO 2 29 996 4 26 099 7 22 763 10 19 900 13 17 436 16 15 311 18 13 474 21 11 883 24 10 501 27 9 299 29 8 250 Figure 13 3 BTC sensor resistance table Protection failure Disp
60. s sec dB A BSPF kg kg 1120 920 Front View 900 gt Figure 2 1 HPAW65 model 1120 1165 O LO 3 Y Front View ATI HPAW65 6 78 1 62 1 36 230 Single 50 IP X4 HAO7C 1300 3 6 0 311 52 3 4 4 1 94 111 400 gt Figure 2 2 HPAW85 HPAW110 amp HPAW130 models 8 73 2 20 10 0 230 oingle 50 IP X4 HAO7C 1780 3 6 0 422 52 3 4 3 9 115 134 125 485 HPAW85 LM K PERENNE NE Ep pg TS HPAW110 dd 32 25 die 230 Single 50 IP X4 R407c 1900 3 6 0 54 52 q 4 3 138 156 glands Rear View 8 690 265 gt Rear View HPAW130 12 98 2 59 11 8 230 Single 50 IP X4 R407c 2200 3 6 0 61 52 1 4 8 152 170 Electrical inlet HPAW155 11646 2T 12 6 230 Single 50 IP X4 R407c 2300 3 15 0 724 58 q 5 8 172 191 2 2 Dimensions 1120 430 235 Flow Electrical inlet 1470 788 Front View Rear View O LO N Y 900 400 1 1 145 e I Figure 2 3 HPAW155 model 2 3 Main Components Evaporator coil Control panel Position of Immersion cover removed heater with Auto air vent Mains supply terminals Fan Heating controls terminals ATC controller connection plug Compressor Circulating pump Condensate Trace heater Condensor drain holes element in in b
61. that the BOIL START setting Take a note of these settings and write them in the Commissioning sheet in section 11 4 G E 9 o Io O O 11 Commissioning 11 4 Record of ATC and BTC Settings Please complete the following settings ATC Parameter Description Range Set Value Comments U Return water temperature to start electrical heater go 30C C Do not Adjust 1 Desired Return water temperature setting 10 C 60C C SET TO 60 C 2 Defrost cycle 30 Min 90Min Min Do not Adjust 3 Coil temperature point to start defrosting 30 C 0 C C Do not Adjust 4 Coil temperature point to stop defrosting 20900 C Do not Adjust 9 Max time for defrosting 1 Min 12Min Min Do not Adjust 4 l 0 1 R fail 1 D A estart after power failure 0 NO 1 Yes o not Adjust 9 Water pump working mode 0 1 4 Do not Adjust O Cont 1 Normal Fan motor working mode A O daytime working mode 0 1 1 Adjustable 1 night time working mode B Target superheat F F 3 Do not Adjust C Manual control paces of EEV UU 9 Do not Adjust BTC Item Access Active Mode Set Value Range OUTDR Start 1 Always all C 1 to 29 C OUTDR DSGN 1 Always All C 50 to OC BOIL START 1 Always All C 1 to 65C BOIL DSGN 1 Always All C 21 to 104 C BOIL MAX U Always All C 48 to 107 C OFF BOIL MIN 0 Always All C OFF 26 to 82 C DIEE O Always All AU AU 1 to 23 C DHW BOIL TARGET U Always All C OFF 21 to 104 C pump DLY U Always All secs OFF 20 se
62. tor 6uF U 1 1 1 2 HPAS16 Fan Motor A 1 0 0 0 0 HPAS17 Fan Motor B 0 1 1 1 2 HPAS18 PEB 1 1 1 1 1 HPAS19 12Vac Transformer 1 1 1 1 1 HPAS20 24Vac Transformer 1 1 1 1 1 HPAS21 Controller ATC 1 1 1 1 1 HPAS22 Compressor A 1 U U U U HPAS23 Compressor B U 1 U U U HPAS24 Compressor C U U 1 0 0 HPAS25 Compressor D 0 0 0 1 0 HPAS26 Compressor E 0 0 0 0 1 HPAS27 Controller BTC 1 1 1 1 1 D HPAS28 Relay 1 2 2 2 2 2 HPAS29 Circulating Pump A 1 1 1 1 0 2 HPAS30 Circulating Pump B 0 0 0 O 1 e HPAS31 Immersion element 3kW 1 1 1 1 1 O HPAS32 Flexible Hoses 34 2 2 O O O S HPAS33 Flexible Hoses 1 U U 2 2 2 dp HPAS34 Isolation Valves 22mm 2 2 O 0 0 15 Accessorles A AA dia m c Figure 15 1 Sealed system kit 15 1 Sealed System Kits These are required when the Grant Aerona Heat Pump is used as part of sealed heating system refer to Section 7 for further details Kit 1 Grant Ref HPAW55K1 2 12 litre expansion vessel kit For use on heating systems with a volume of up to 110 litres Kit contents 12 litre expansion vessel Wall bracket and fixing band 3 bar pressure relief valve Manifold Pressure gauge Filling loop kit isolation valve non return isolation valve and filling hose Kit 2 Grant Ref HPAW55K18 18 litre expansion vessel kit For use on heating systems with a volume of up to165 litres Kit contents 18 litre expansion vessel Wall bracket and fixing band 3 bar pressure relief valve Manifol
63. ure 8 3 ATC connection Figure 8 4 Umbilical cable Figure 8 5 ATC control unit Using the 5m of umbilical cable connect the controller right to the heat pump left The controller fits all standard single patresses surface and flush Use one of the cable glands at the rear of the heat pump to protect this cable To extend if required simply splice a new section into the middle ensuring all connections are sound and water proof The size of cable is O 5mm and operates at ultra low voltage 50Vdc 8 4 Mains Supply Cable All Grant Aerona Heat Pumps contain a 3kW immersion element as a boost heat source This element will energise under either one or two conditions 1 When the external ambient air temperature drops between 5 C and 5 C This figure is variable and adjustable at the ATC 2 When the heat pump has not seen a temperature rise of 1 C or more in the Return water from the heating system in a 20 minute period The cable sizing to the heat pump must include for this additional 3kW load For Bivalent systems where a Gas Oil or Wood Pellet boiler is switched from the heat pump the immersion heater is disconnected Refer to section 8 8 If the boiler is to be used with the 3kW immersion heater still connected the additional load must be taken into account and the maximum demand must be determined for each heat pump Input Immersion Power Element kW kW HPAW65 1 62 3 HPAW85 2 20 3 H
64. us the backup boiler will be energised under the same parameters as given above for the electric immersion element and trace heater Circulating Pump In all conditions the circulating pump will operate when the ambient temperature falls below 5 C This is part of the frost protection and cannot be adjusted by the user Frost Protection 1 When ambient air temperature is less than 5 C the circulating pump will start The pump will stop when air temperature is above 6 C G E 9 Dp OD O 2 When ambient air temperature is less than 0 C AND the return water temperature is less than 5 C the heat pump will start The Heat pump will stop when return water temperature is above 8 C EN 11 Commissioning Power 24 V 10 50 60 Hz 2 5 VA 0 1 A H6090A Pump HP relays 230V ac 5 A 1 6 hp Demand inputs 24 V ac or dry contact INSTALLATION CATEGORY E C GRANT One Stage BTC 1P A Y For product instructions see brochure tektra 1040 01K Signal wiring must be rated at least 200V agg Made in Canada Figure 11 2 BIC display and buttons G 9 D OD le 11 3 Setting the BTC Controller To set the BTC controller 1 Press all 3 buttons for 1 second to enter the mode setting 2 If Model is shown press the A button until Mode 3 is displayed then press Item again OUTDR START should now be displayed 3 Scroll through the menu using the A
65. y energy that can be used for example to push a piston and its useless energy that energy which cannot be used to do external work then entropy can be used to estimate the useless stray or lost energy which depends on the entropy of the system and the absolute temperature of the surroundings COP The COP or Coefficient of Performance is found by dividing the useful heat output by the energy input For example a heat pump that produces 4 kW of heat for 1 kW of input power has a COP of 4 SPF Seasonal Performance Factor is similar to COP but is an average figure taken over the year It is usually lower than quoted COP figures due to the need in some cases for additional heat input during very cold periods Source This is wherever the heat is being extracted from e g the outside air or ground Emitters A term used to describe radiators or underfloor heating This is the component that emits the heat into the building Refrigerant The working fluid within the heat pump It evaporates in one part and condenses in another By doing so heat is transferred from cold to hot This fluid is sealed in and will not degrade within the life of the heat pump Refrigerant handling should only be carried out by persons qualified to do so Heat Exchanger A component that allows the transference of heat from one circuit to another without the two circuits Mixing Two heat exchangers

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