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Grant Aer ona Air Sour ce Heat Pump Air to W ater Heat Pump Range Installation & User Instructions Part No. DOC.87 Rev .00 January 2010 T ested to BS EN 14511.
i STOP STOP! Has a heat loss calculation been carried out? kW Is this system designed for Mono or Bivalent If Mono, total heating capacity? kW If Bivalent, what is the load capacity of.
Legislation ii All work that is requir ed regar ding the refrigerant cir cuit must be carried out by an F-gas register ed (or equivalent) refrigeration Engineer . On no account should maintenance or repair be carried out on the r efrigerant circuit by unqualified personnel.
iii Contents Contents Stop! i Legislation ii Contents iii 1 Introduction 1 1.1 General Information 1 1.2 W arranty 1 1.3 Important Advice 1 1.4 Immersion Heater 1 2 Specifications and Controls 2 2.1 Specifications 2 2.2 Dimensions 2 2.3 Main Components 3 2.
Introduction & General Information 1 1.1 General Information The Grant Aerona Heat Pump is a low water content – low temperature heat source, designed to be highly ef ficient when installed and used in line with these installation and user instructions.
2 Specifications and Controls 2 Specifications and Contr ols 2.1 Specifications 2.2 Dimensions Model HP AW65 HP AW85 HP AW110 HP AW130 HP AW155 Heating Capacity kW 6.78 8.73 11.32 12.58 15.5 Input Power kW 1.62 2.20 2.61 2.59 2.77 Running Current A 7.
Specifications and Controls 3 2.2 Dimensions 1120 430 235 Electrical inlet glands Flow Return 900 Front View Fan Rear View 90 90 1470 250 130 50 50 555 788 400 145 2.
4 Specifications and Controls 2 Specifications and Contr ols 2.4 Heat Pump Curves Water Flow T emperature 35˚C 50˚C Air T emperature in ˚C Heat Pump Output in kW -10 0 10 20 30 40 16 14 12 10 8 6 4 2 0 COP 4.
Specifications and Controls 5 2.5 Pump Curves Pump Head (metres) Pump Head (metres) 6 5 4 3 2 1 0 Wilo-Classic Star 0 0.5 1 1.5 2 3) Flow (m 3 /h) Flow (m 3 /h) S t a r - R S 1 5 / 6 .
6 Specifications and Controls All Grant Aerona Heat Pumps ar e supplied with 2 controllers. 1 x heat pump controller (A TC) and 1 x temperature contr oller (BTC). The A TC is positioned inside the house/building and is normally used in an automatic condition.
Siting the Heat Pump 7 3 Siting the Heat Pump 1. Base The heat pump should be installed on a flat trowelled finished concr ete 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.
8 Siting the Heat Pump 3 Siting the Heat Pump The North face of a building will usually have colder ambient air than any other side. T o ensure maximum efficiency from the Grant Aer ona heat pump, position the unit on a warmer side.
Hydraulic Diagrams 9 4 Hydraulic Diagrams 4.1 S-Plan T ype - Monovalent 4.2 Extended S-Plan T ype - Monovalent Heat Pump AT C Heat Pump AT C Flow Flexible pipe Auto Bypass Isolating valve Isolating va.
10 Hydraulic Diagrams 4 Hydraulic Diagrams 4.3 S-Plan T ype - Bivalent CH Flow DHW Flow Heating Load DHW Return CH Return Room Stat Internal wiring centre Programmer Boiler 200mm minimum R F Cylinder .
Hydraulic Diagrams 11 200mm minimum CH Flow DHW Flow Outside wall 4.4 Extended S-Plan T ype - Bivalent Heating Load Heating Load DHW Return CH Return Room Stat Room Stat Internal wiring centre Program.
12 Hydraulic Diagrams 4 Hydraulic Diagrams 4.5 Buffers T anks 4.6 S-Plan with Buffer - Monovalent The use of a buffer with the curr ent 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 ther e is no other demand placed on the system.
Hydraulic Diagrams 13 4.7 Extended S-Plan with Buffer - Monovalent Cylinder Stat Room Stat Room Stat Internal wiring centre Heating Load Programmer The hydraulic diagrams do not show the isolation valves, any expansion vessels, pressur e relief valves or filling loops.
14 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 between 30˚C and 60˚C. The return temperature will depend on the load of the system at a given point in time.
Calculating Radiator Sizes 15 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 manufactur er’ s specifications.
16 Sealed Systems The following components are r equired 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.
Electrical 17 8.1 General The Grant Aerona Heat Pump is very simple to install and to wir e. The units are designed to meet the need for simplicity – both in installation and in servicing. As a result, the wiring involved is both minimal and simple compared to other heat pumps available.
18 Electrical 8 Electrical Earth connections have been excluded for clarity . Ensure all earth connections are made prior to energising. Within the heat pump control panel, connect the wires as follow.
Electrical 19 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 dr ops between -5ºC and +5ºC.
20 Electrical 8.5 Heat Pump Wiring Diagram 8 Electrical The Main Connections you have to make 230 V ac Compressor Heater 4-way valve Expansion V alve Disconnect Electric Element for Bivalent Switched .
Electrical 21 230 V ac Compressor Heater 4-way valve Expansion V alve Ret Gas Sensor Ext T emp Sensor Coil T emp Sensor Dis Gas Sensor Ret T emp Sensor N Compressor Fan motor Pump Relay KM2 6kW Electr.
22 Electrical 8 Electrical Hlg Zone V alve MCB E LN LN E 4 5 6 7 8 9 1 0 1 2 3 1 Limit Control 2 c 1 2 c Programmer Room Thermostat Cylinder Thermostat CH HW Gr Br O Bl Off Figure 8-11: Central Heatin.
Electrical 23 8.7 Wiring Diagrams LN E 456 7 89 1 0 1 Limit 2 c 1 Control 2 c Programmer Fuse CH HW Fuse Fuse HIg Zone V alve MCB L L Off O Bl Br Gr Off O Bl Br Gr DHW Zone V alve Return sensor Outdoo.
24 Electrical 8 Electrical LN E 456 7 89 1 0 1 Limit 2 c 1 Control 2 c Programmer Fuse CH HW Fuse Fuse HIg Zone V alve MCB L L Off O Bl Br Gr Off O Bl Br Gr DHW Zone V alve 230V/24 V ac T ransformer N.
Electrical 25 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 .
26 Domestic Hot W ater 9.1 T emperature Contr ol The desired hot water temperatur e stored in the cylinder can be adjusted on the BTC controller . As already mentioned, the heat pump works most efficiently at lower temperatur es but these temperatures ar e not suitable for domestic hot water which should always be stored at about 60ºC.
Domestic Hot W ater 27 NB. Setting this override switch to OFF does not stop the automatic operation of the immersion element. The requir ed relay , manual override switch and enclosure ar e available from Grant Engineering UK Ltd as a kit. For details of this Automatic Domestic Hot W ater Boost Kit (Grant Ref.
28 Filling the System 10 Filling the System 10.1 Filling and V enting - Sealed Systems 1. T o vent the heat pump – All Grant Aerona heat pumps ar e fitted with a single automatic air vent on the top of the electric immersion element housing.
Commissioning 29 11 Commissioning 11.1 Switching on First Time When switching on for the first time carry out the following procedur es in the order they appear . 1. Ensure the external mains power isolation switch is set to the ‘OFF’ position. 2.
30 Commissioning 11 Commissioning 11.2 Setting the A TC Controller The main purpose of the A TC controller is to give an overall maximum temperature contr ol over the heat pump. In contrast, the BTC controller will give accurate control over both CH and DHW temperatures, even if they each have differ ent target temperatures.
Commissioning 31 A TC Parameters Parameter Description Range Default Comments 0 Return water temperature to start electrical heater 0˚C – 30˚C 2˚C Factory Set 1 Desired Return water temperature s.
32 Commissioning 11 Commissioning 11.3 Setting the BTC Controller T o set the BTC controller . 1. Press all 3 buttons for 1 second to enter the mode setting. 2. If ‘Mode1’ is shown, press the button until ‘Mode 3’ is displayed then press ‘Item again.
Commissioning 33 Notes: a) Access = 1 is available at all times. T o access settings menu with access = 0, remove the front control panel cover then r emo ve 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 .
34 Commissioning AT C Parameter Description Range Set V alue Comments 0 Return water temperature to start electrical heater 0˚C – 30˚C ˚C Do not Adjust 1 Desired Return water temperature setting .
Servicing & Maintenance 35 12 Servicing & Maintenance 12.1 General Grant Aerona Heat Pumps r equire 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.
36 Fault Finding 13 Fault Finding Is there power to the heat pump? STOP! Call the helpline for assistance Is A TC in the automatic position? Is heat pump working? Press ‘M’ on the A TC until the s.
Fault Finding 37 13.2 General Notes 1. If no continuity can be found between terminals 1 & 2 and/or 1 & 3 there will be a fault within the heating s-plan system. (see diagram for location of the terminals.) 2. Please go back to your design of the S-plan wiring and check it against the installation manual.
T emperature Resistance T emperature Resistance T emperature Resistance T emperature Resistance ˚C k W ˚C k W ˚C k W ˚C k W -20 37.4111 2 13.0055 24 5.1978 46 2.3276 -19 35.5384 3 12.4391 25 5.0000 47 2.2493 -18 33.7705 4 11.9008 26 4.8109 48 2.1740 -17 31.
Fault Finding 39 Protection/failur e Display Inlet water temperature sensor failur e PP 1 Coil temperature sensor failur e PP 3 Ambient temperature sensor failur e PP 5 Winter anti-freeze protection P.
40 Spare Parts List 14 Spar e Parts List Part Number Description HP AW65 HP AW85 HP AW110 HP AW130 HP AW155 HP AS10 Power capacitor 50µF 1 1 0 0 0 HP AS11 Power Capacitor 60µF 0 0 1 1 0 HP AS12 Powe.
Accessories 41 15 Accessories 15.1 Sealed System Kits These are r equired when the Grant Aerona Heat Pump is used as part of sealed heating system – refer to Section 7 for further details.
42 Glossary of T erms 16 Glossary of T erms Efficiency The word “ef ficiency” 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.
W arranty 43 17 W arranty 17.1 The Grant Heat Pump W arranty Dear Customer Y ou are now the pr oud owner of a Grant Aerona Air Sour ce Heat Pump from Grant Engineering (UK) Limited, that has been designed to give years of reliable, tr ouble free operation.
GRANT ENGINEERING (UK) L TD Hopton House, Hopton Industrial Estate, Devizes, Wiltshire. SN10 2EU T elephone: 01380 736920 Fax: 01380 736991 Email: info@grantuk.
T o be Completed by the Householder GRANT ENGINEERING (UK) L TD Hopton House, Hopton Industrial Estate, Devizes, Wiltshire. SN10 2EU T elephone: 01380 736920 Fax: 01380 736991 Email: info@grantuk.
Guarantee Registration Car d Grant Air Source Heat Pump Guarantee Air to W ater Heat Pump Range Important - Don’t Delay! Please complete the attached reply-paid guarantee r egistration card and retu.
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