Compact Heat Pump User Manual
Contents
1. 12 I sa Display EE EE EE EPIO 12 212 ere ee eee To read flow temperatures and refrigerant pressures 13 1 2 TATE To change the heat pump return flow temperatures 14 o DHW Production oe erm M cM a MM t 14 ur eel eco M amas 15 2X E s a a ne e e c E E E E T S 15 E En ccnaccsaccchonaccosoc 18 6 Rs Complaint Procedure 19 7 K UD eese 20 7 1 i deus gic Conc o A 20 7 1 1 DD Persons covered by the Warranty cccccsssscsccsscsseescctcosssccncessesccseassesescnsessesses 20 7 1 2 ER amd of the Warranty am E 20 7 1 3 Waaa en a ERE 7777777 YY 20 7 1 4 DE General exceptions i sie nt te ne re en ae ee eee eee 20 7 1 5 BERE alke of Duty AMEN n onc IMMER 21 7 1 0 NE Imsthe event of Damage E enc P 21 7 1 7 0 Replacement Pas 21 C t Heat P O ti M Versi 5 NE i ump Operational Manual Version Kensa Heat PL mps 1 Introduction a message from the Managing Director Thank you for choosing a Kensa Compact ground source heat pump for your proj2. KensaHeat Pumps Compact Heat Pum User Manual VH CHE Kensa Heat Pumps Compact Heat Pump Operational Manual Version 5 Page 1 of 22 Introduction Safety information General product information Operational Instructions Fault Finding Warranty SulputJ ne suononJjsu euoneJedo uoneuJ40Jui 32npoJd eJ u 5 uoneuJ410Jul A19jeg uononpoJ1u Aiue le AA Contents Page Section Description Page ass NAL FOG UCU OW ccs uuu uuu sedans ee 3 2 eq uya Safety Information 4 A TE Disposal Decommissioning I 4 PNS amam ua E Returning Products ann ae E E 4 P General Product Information 5 D E Kensa Heat Pimb5b u RO RR m m m 5 S RV pR oz pasan Product Descrip isansa u uui enne nennen anna annes ares n aa sns a an 5 2 Kensa Compact Technical Details 9 5 17 P Kensa High Temperature Compact Technical Details single compressors 10 oA Kensa High Temperature Compact Technical Details twin compressors 11 ewan Operational Instructions 12 M 5 Maximising the efficiency of the heat pump
3. eb lon O Warranty C t Heat P O ti M Version 5 nn a ump Operational Manual Version Kensa Heat PL mps UOYEWUOJU 3onpoud jesaUayH uoneuuoJul Ajajes uononpoJ1iu suononJjsu jeuoneJedo m N c ct 5 o 5 00 7 Warranty The Kensa Compact Ground Source heat pump is designed and built to the highest standard and as such is guaranteed for 5 years for parts from the date of commissioning or 5 years from the date of man ufacture excluding the internal water pumps and electrical components whichever is shorter Internal water pumps ground and load side and electrical components are guaranteed for 2 years for parts from the date of commissioning or 2 years from the date of manufacturer whichever is shorter 7 1 Terms and Conditions 7 1 1 Persons covered by the Warranty The Warranty applies to the original purchaser and any subsequent owner of the item 7 1 2 Validity period of the Warranty The guarantee period excluding the water pumps and electrical components is five years calculated from the commissioning date stated on the commissioning certificate or 5 years from the date of man ufacture whichever is shorter For the water pumps and electrical components it is 2 years from the com missioning date stated on the commissioning certificate or 2 years from the date of manufacture whichever is shorter 7 1 3 Scope Kensa Heat Pumps Ltd warrants to the original purchaser Buyer that al
4. 1044 D d9p 0 TTSUTN3 sg 01 peure1qo sen eA aie sosou1uaJed ui Saunsy 0S 048X006X006 ww O 06 6 9 NM 81 ST v7 el 9u 400 jJJopun 04 MO Bap GE punoJ S ay WOA 1 Z S O ose og 9 qe1 y ui Sounsy ZH OS DV SHOA 0 Zz seud 8u S JU94NI juauind Juang 1uSi9M p sues SuiuunJ SuiuunJ indino 9ZIS uonoauuo Suoisuauulq SJOSSaJduJo BUIUJON jes dAL jes dAL xe Jeguueu Compact Heat Pump Operational Manual Version 5 Page 9 of 22 sjleqaq e21uu 3 Pedwo esuay e 3 4 Kensa High Temperature Compact Technical Details Single Compressor Nominal Max Typical Typical Nominal dry Compressors Dimensions Connection size Thermal running running starting Output Current current current Single Phase 230 Volts AC 50 Hz The figures above are based on a rating to BS EN14511 0 deg C from the ground 35 deg C flow to underfloor The figures in parentheses are values obtained to BS EN14511 Introduction 0 deg C from the ground 65 deg C flow to the heating distribution system This figure includes the power consumption of the inbuilt water pumps For clarification of starting currents and details on how these figures are calculated please contact Kensa Safety information Operational Instructions Fault Finding Warranty KensaHeat Pumps Compact Heat Pump Operational Manual Version 5 Page 10 of 22 uononpoJaiu uoneuJ10Jul A19Jes E suononJjsu jeuoneJedo SulputJ ne AyueuueM e
5. writing including Health and Safety data sheets relating to any substances identified as hazardous or potentially hazardous C t Heat P O ti IM Versi 5 bae i ump Operational Manual Version Kensa Heat PLI mps 3 General Product Information This manual explains how to install commission and operate a Kensa ground source heat pump 3 1 Kensa Heat Pumps Kensa Heat Pumps is the leading UK manufacturer of a full range of ground source heat pumps Kensa provides exceptional levels of expertise and advice on the use design and application of heat pumps Kensa have been active in the heat pump market since 1999 and remains a well respected company not only in the industry but also with all our customers and stakeholders Since 1999 the company has manufactured and installed over a thousand heat pumps of various types throughout Europe and manufacture ranges suitable for the domestic market and specifically designed for commercial applications Kensa are ISO9001 approved for the design and manufacture of heat pumps and hold an unique status as being accredited by Microgeneration Certification Scheme for both the manufacture and installation of ground source heat pumps Kensa were also a founding member of the Ground Source Heat Pump Association and play a major role in helping to raise the profile of heat pumps and formulate Industry Standards Kensa s aim has always been to take the mystery and complexity out of heat pumps designing syste
6. Heat PLI mps Introduction Fig 2 A single compressor heat pump c O T O ucl E gt ap q Y Schrader valve heating distribution side Condenser Heat Exchanger Evaporator Heat c Exchanger P Compressor T c O P O D O Ground Array Water Pump Controller c u Heating Distribu tion Water Pump s Pressure Gauges Fig 3 The internals of a single compressor heat pump c O C t Heat Pump Operational Manual Version 5 a ump Operational Manual Version Kensa Heat Pumps uononpoJu uoneuuoJui A19jesg O o m s o ET O 5 m gt i4 ct s O ct O 5 o Suiput 3jneJ AiUueJJeAA Fig 4 A twin compressor heat pump Schrader valve heating Heat Exchangers distribution side Compressors Compressor 2 i Controller Compressor 1 Controller Ground Array Water Pump Heating Distribution Pressure Gauges Water Pump Fig 5 The internals of q twin compressor heat pump C t Heat P O ti M Version 5 w u s l ump Operational Manual Version Kensa Heat Pumps uono2npou1lu uoneuJ10Jul A19Jes EF ani suononJjsu jeuoneJedo SulputJ ne AiueJJeAA esuay 2e3uoo eseo d pa1e n 5 e 9Je Sainsy asay MOY uo s e1 p pue s UaIIND suyieys Jo uoneoul4e 404 sduind 3 em 3 inqui y Jo uonduunsuoo Jamod y sepnjour ainsy siu KensaHeat Pumps SJO1EIpeJ 0 MOJJ 2 Sep OG punoJ8 y
7. ar Thermal however DHW can be provided by most heat pumps The installation and operation of a heat pump in DHW mode is more complex than space heating and needs careful design and installation To simplify the production of DHW using a heat pump Kensa has designed an industry leading and straightforward DHW option The heat pump is designed to operate at the optimum temperature that provides DHW at the maximum efficiency without using any inbuilt direct electric heaters The system does not need a tank thermostat or a software temperature setpoint Warning when a heat pump is used for heating domestic hot water it may not get the water hot enough to kill the dangerous Legionella that can breed in hot water cylinders Alternative arrangements should therefore be made to ensure the cylinder is pasteurised regularly C t Heat P O ti M Versi 5 v Id pee ump Operational Manual Version Kensa Heat PLI mps 4 3 1 DHW Operation To get the most cost effective production of DHW and space heating it is advised that the system is used in conjunction with an off peak electricity tariff for example Economy 10 Economy 10 will provide three periods of off peak electricity throughout a 24 hour period The majority of the off peak period should be used for space heating and the settings on the DHW timeclock should reflect this DHW production takes priority over the space heating so it is important that sufficient time is allocated to the space h
8. ase the efficiency of the heat pump and lower the overall energy costs of the building there are a number of simple steps that can be taken 1 Insulate the property as much as possible This will reduce the heat loss from the building which in turn will reduce running time of the heat pump and hence energy costs 2 The lower the flow temperature from the heat pump the higher the efficiency so consider a heating system with a large heat emitting area such as underfloor 3 If in a well insulated building with underfloor mounted in screed throughout consider running your heat pump on off peak electricity tariffs such as Economy 10 4 With underfloor systems avoid the use of insulative coverings such as thick carpets and wooden floors 5 Consider the use of Solar Thermal for the production of the majority of DHW 4 2 Display Each heat pump has a dedicated display which can be interrogated to view various parameters and indicate faults alarms Twin compressors units have two displays one for each compressor where as sin gle compressor unit only has one 2 Heating symbol 3 Compressor number 1 Floor return temperature 3 Compressor run symbol 2 Cooling symbol n b the numbers above refer to the points over Fig 6 Heat Pump Display C t Heat P O ti M Version 5 an ua ump Operational Manual Version Kensa Heat Pumps The display normally reads the temperature of the water returning from the heating distributi
9. ce provided by the RECC Code make sure that micro renewable technology supplied and installed under the scheme are free from manufacturing or installation faults Occasionally however problems can develop If you want to complain about the quality of the equipment the installation the advice given the standard of service or any other aspect of the contract between Kensa and yourself the following procedure should be used Any complaint should be notified to Kensa Heat Pumps within three months of first noticing the problem a If the complaint cannot be rectified remotely Kensa or a representative on its behalf will arrange to inspect the system within 20 working days from receiving the complaint If the complaint is about under performance you should make evidence available to Kensa Safety information C Kensa will consider the details of the complaint and report the findings clearly to the consumer within seven working days from any inspection d Kensa will try to find an agreed course of action to solve the complaint to the consumer s 5 satisfaction E e Kensa will co operate fully with local consumer advisers or any other person that you consult when making a complaint f If a complaint cannot be sorted out through the above procedure you or Kensa can use the 3 conciliation service offered by the Real Assurance scheme Please see www recc org uk z D c D VY c O T O 2 WY c O D
10. eating to ensure that the building is warm Using the in built controls the heat pump will continue to produce DHW until the timeclock ceases to call for DHW or the controls automatically stop the heat pump If the controls stop the production of DHW the heat pump will not restart for a period of approximately two hours as the number of compressor starts are limited in DHW mode for a given period of time Standard Compact Units The maximum temperature that the heat pump can produce depends on the ground temperature and hence the time of year The heat pump will achieve a DHW temperature of approximately 50 55 C In summer it could be higher due to the warmer ground conditions If 65 C is required all year round it is recommended that an immersion heater is linked to a second channel on the DHW timeclock and this is programmed to operate for a period immediately following the DHW production This means that the majority of the heating load for the DHW is produced at a lower cost using the heat pump as opposed to using only the direct immersion heater If 50 C water is acceptable then it is recommended that the immersion heater is programmed to raise the temperature to above 60 C once a week High Temperature Compact Units These are designed to provide higher outlet temperatures so will produce DHW at 60 65 C however as with all heat pumps increasing the outlet temperature decreases the efficiency 4 4 Cooling This option needs to be s
11. ect Kensa Heat Pumps has been manufacturing ground source heat pumps since 1999 and have significant experience in providing these systems in domestic and commercial applications Your Kensa heat pump will provide you with many years of low energy bills and maintenance free running while also reducing your carbon footprint Kensa Compact heat pumps are designed for ease of operation and once set by your installer to provide the optimum flow temperature for your heating system should not require adjusting The purpose of this manual is to guide you through the operational aspects of living with a heat pump c O T O ucl E gt QO ucl Y Finally please feel free to contact Kensa should you have any questions wish to consider ground source heat pumps for any future projects or even just to share your experiences of using a ground source heat pump with us mem t _ Simon Lomax Managing director Kensa Heat Pumps Ltd General product information Operational Instructions Fault Finding For further information on ground source heat pumps and their application please refer to www kensaheatpumps com Warranty C t Heat P O ti M Versi 5 A i ump Operational Manual Version Kensa Heat Pumps uononpoJiu G D 2 D gt E O O c O ct h O gt 3 ies ET O 2 SulpurJ ne suononJjsu jeuoneJedo Aiue le AA 2 Safety information Safe operatio
12. em Symptom Blank display on software controller Compressor not running but display reading temperature near setpoint Display flashes fault code tP Display flashes fault code HP Display flashes fault code LP Display flashes fault code A1 Display flashes fault code E1 E2 E3 or E4 Possible Cause No power supply Controls MCB tripped There is no call from the time clock or thermostat for heat pump operation Heat pump is up to temperature Low water pressure in the ground or heating system side due to pipe relaxation or other pressure loss Overheat warning No or low flow around heating distribution circuit because of air in water pump or stuck water pump impellor or heating distribution system valves actuators closed HP can also be temporarily displayed when the heat pump reverts from DHW to space heating mode Low gas pressure in machine Can occur simultaneously with an A1 alarm Can occur temporarily on first start up when unit is new or after a long period out of use Freeze protection system activated Low or no water flow on the ground cold side of the machine Can also occur after many months of running in very cold weather Loss of contact with probes inside heat pump E4 could be loss of contact with weather compensation sensor Check wall mounted electrical isolator switch or call electrician Call electrician to investigate cause Programme time clock according to manu fac
13. essor is running the number 1 and the compressor run symbol will be on oO Compressor running A flashing error code may appear if there is a fault with the heat pump the most common will be mm Bem DE TP Low water pressure ground or heating distribution High gas pressure caused by low or no flow on the heating distribution circuit Low gas pressure fault can occur temporarily on first start up Call Kensa Technical Department Anti freeze alarm ground getting to cold insufficient anti freeze unit not commissioned correctly low flow around ground arrays See Fault Finding Section 5 for further details 4 2 1 To read flow temperatures and refrigerant pressures Using the display it is possible to interrogate the heat pump to read temperatures and refrigerant pressures For twin compressor units the left hand unit reads temperatures and pressures in compressor one and the right hand controller compressor two C t Heat P O ti M Versi 5 w ae see ump Operational Manual Version Kensa Heat PL mps Introduction Safety information c O PD O ucl E O gt O O m G QO c w O Fault Finding Warranty uononpoJ1iu uoneuJ40Jul A19jeg G D 2 D gt E O O c O ct O gt 3 Ep O 2 Suiput 3jneJ Aiue le AA To read temperatures and refrigerant pressures 1 Press and hold SEL until is displayed 2 Press the UP arrow u
14. l parts Parts ofthe Kensa Compact Ground Source Heat Pump excluding accessories shall be merchantable and free from defects in materials and workmanship appearing under normal working conditions Kensa Heat Pumps Ltd will at its option and without charge to the Buyer replace or repair any Parts which cause the Kensa Compact Ground Source Heat Pump to be inoperable however if Kensa Heat Pumps Ltd elects to provide replacement Parts it shall not be obligated to install such replacement Parts and the Buyer shall be responsible for all other costs including but not limited to shipping fees and ex penses The warranty applies to faults originating inside the item 7 1 4 General exceptions Compensation is not provided for consequential losses damage caused by normal wear and tear inadequate maintenance or care damage caused by freezing damage of the unit due to non approved or incorrect quantities of antifreeze being used in the ground side incorrect flowrates or air in the system damage caused by power surges incorrect supply voltage or lightning strikes cost of inspecting adjusting or cleaning the item unless this relates to damage that is eligible for compensation minor damage e g scratches and marks that does not affect the operation of the item damage covered by insurance indirect damage loss or damage caused by gross negligence or intent misappropriation fraud or similar crime against propert
15. ms that can be easily installed without any specialist training making the product available to a larger market and helping to reduce CO2 emissions while reducing client s energy bills 3 2 Product description Heat pumps basically extract solar energy stored in the ground water courses and in the air and convert this to a higher temperature to use in a building s heating distribution system They work in a similar manner to a fridge in reverse where the inside of the fridge is the heat source and the grill at the back of the fridge is the heating system Electrical Power Compressor 1 i 2 im E om Underfloor Heating Distribution System Electrical N Electrical Power P WU XY F Low Grade Heat From Ground Fig 1 Heat pump Schematic C t Heat P O tional M Version 5 5 D ump Operational Manual Version Kensa Heat Pumps Introduction Safety information Uu C Oo D O 5 1 Uu E O gt o V Q O Fault Finding Warranty uononpoJ1iu uoneuJ40Jul A19jes O oO D s c ET O 5 m 5 o ct s O ct O 5 o Suiput 3jneJ Aiue le AA A ground source heat pump GSHP extracts heat from the ground by circulating a cold solution of water and antifreeze brine around pipes buried in the ground As these pipes are buried below 1m in depth where the temperature of the ground remains pretty constant 8 to 10 C heat is absorbed from the gro
16. n of this unit can only be guaranteed if it is properly installed and commissioned in compli ance with the operating instructions General installation and safety instructions for pipeline and plant construction as well as the proper use of tools and safety equipment must also be complied with Manufacturer Kensa Heat Pumps Mount Wellington Chacewater Truro Cornwall TR4 8RJ Tel 01872 862140 www kensaheatpumps com The product is designed and constructed to withstand the forces encountered during normal use Use of the product for any other purpose or failure to install the product in accordance with these Installation and Operation Instructions could cause damage to the product will invalidate the warranty and may cause injury or fatality to personnel 2 1 Disposal Decommissioning Kensa offer a life time decommissioning service for this product This is available on a return to base basis carriage at users cost Disposal of any antifreeze water mix should follow the disposal instructions as laid out on the COSH Safety Data Sheet in the Installation Manual 2 2 Returning products Customers and stockists are reminded that under EC Health Safety and Environment Law when returning products to Kensa Heat Pumps they must provide information on any hazards and the precautions to be taken due to contamination residues or mechanical damage which may present a health safety or environmental risk This information must be provided in
17. ntil b is displayed 3 Press SEL and b01 is displayed 4 Press SEL 5 Temperature of water returning from the underfloor is displayed b01 6 Press SEL 7 Press the UP arrow once until b02 is displayed 8 Press SEL 9 Temperature of water returning from ground arrays is displayed b02 10 Press SEL 11 Press the UP arrow once until b03 is displayed 12 Press SEL 13 Temperature of water going out to the ground arrays is displayed b03 14 Press SEL 15 Press the UP arrow once until b04 is displayed 16 Press SEL 17 Refrigerant pressure in Bar is displayed b04 18 Press SEL 4 2 2 To change the heat pump return flow temperatures Heat pumps are generally controlled on the return temperature from the heating distribution system and work on a temperature differential of approximately 5 degrees i e if the return temperature set point is 29 C to 30 C the actual flow temperature out of the heat pump is approximately 35 C The outlet flow temperature of the heat pump determines the efficiency of the heat pump and should have been set for your particular heating system and application at commissioning This is passcode pro tected to avoid unauthorised changes If for any reason that the heat pump return flow needs to be changed please contact Kensa Heat Pumps s Technical Department on 01872 862140 4 3 DHW Production Needs to be specified at time of order The most efficient way of producing Domestic Hot Water DHW is by using Sol
18. of 5 7 C between BO2 and BO3 and the difference should not be higher than 10 C Both temperatures should stabilise after around a few minutes of running If BO3 continues to drop it indicates that there is no or very little flow through the ground side This will need investigating and correcting for the heat pump to operate correctly Re assemble unit Check that the pump front plugs and the Schrader valve covers are replaced Fit the top cover first replacing the cable to the remote display if it was removed and replace 3mm Allan screws Then fit the side cover and finally the front cover Compact Heat Pump Operational Manual Version 5 sus KensaHeat Pumps If further help is required then telephone our helpline on 01872 862140 or send an email to tech nical kensaheatpumps com Introduction Before cleaning always switch off the appliance at the electrical isolator Use only soap and a damp cloth do not use solvents Safety information c O PD O ucl E O 2 O O m QO c QD O Fault Finding Warranty C t Heat P O ti M Versi 5 ae sie ump Operational Manual Version Kensa Heat Pu mps uoneuuoJul Ajajes UONSNPOANU uoneuJ40Jui 32npoJd ejJ u 5 Suiput 3jneJ AiUueJJeAN 5 Fault Finding Many faults which occur on commissioning are found to be due to incorrect wiring or setting up therefore it is recommended that a thorough check is carried out should there be a probl
19. on system The controller will turn the heat pump off once a pre set temperature of water returning from the heating system has been achieved This setting is normally 30 C for underfloor applications which is a typical re turn temperature for an underfloor application In twin compressor units the left hand controller is set at 30 C the right hand at 31 C For radiators this is generally set during commissioning at 45 C for standard units and 55 C for high temperature models In DHW mode the display shows the return temperature from the DHW circuit and the light s to the right of the controller s will be lit The Kensa Compact Range of heat pumps are delivered with the software pre configured for a typical un derfloor mounted in screed application 1 The display on the controller indicates the return temperature of the underfloor circuit 2 The left hand symbols sun top left and frost bottom left indicate heating amp cooling respectively Heating only heat pumps will only use the sun symbol and cooling heat pumps only the frost symbol Reverse cycle machines will use both symbols the one being displayed being dependant on the operating mode selected at the time V Sun symbol heating mode e Frost symbol cooling mode 3 A number 1 will appear top right of controller this is to indicate compressor number if the number 1 is flashing the internal timer is activated and compressor is waiting to run When the compr
20. or such replacement parts extend beyond the term established by the commencement date i e commissioning date of the warranty under which Kensa Heat Pumps Ltd was obligated to provide such replacement parts Kensa Heat Pumps Ltd shall have the right to retain possession or dispose of any parts replaced by it C t Heat P O ti M Version 5 Y nn no ump Operational Manual Version Kensa Heat PLI mps Compact Heat Pump Operational Manual Version 5 abr Uus P Kensa Heat Pu mps
21. p MCB s Check fluid pressure Both the ground side and the heating side pressures should read higher than 1 8 Bar You can top up the ground pressure side using the built in filling valve which is on the right hand side towards the back or underneath the heat pump The heating fluid pressure will be topped up by whatever system the original installer used Typically there will be a filling loop somewhere near the expansion vessel Bleed air Two bleed ports are built into the heat pump one for the ground side and one for the heating The bleed ports are located at the highest point which means they are often easier to access if you remove or lift up the top cover see above Unscrew the cap finger tight and then depress the Schrader valve using a small screwdriver until the fluid runs air free Be ready to catch the fluid in a con tainer to prevent it flowing over the heat pump Also bleed the heating side using any valves that may have been installed by the original plumber e g radiator valves underfloor heating valve or air vents at high points in the pipework You may need to top the pressure up again see above once the system has been bled Check pumps Undo the large plug on the front of the heating side water pump using a container underneath to catch any fluid that may dribble out Spin the pump using a smaller screwdriver to make sure it rotates freely Turn the heating system on using the heating system timer and or thermostat
22. pecified at time of order Cooling is simply operated by means of a volt free contact as indicated on the wiring diagrams however its effectiveness depends on the delivery system All the settings for cooling are factory set Please contact Kensa Heat Pumps for further details 4 5 Maintenance While there are no real maintenance requirements for a Kensa Ground Source Heat Pump it is wise to run some pre heating season checks to ensure everything is running smoothly These are minor checks and can easily be carried by the owner of the system 1 Remove Front Cover Use a 3mm Allan key to remove the 4 screws 2 each side Depending on the space around the heat pump you may also want to remove the lower side panel again using a 3mm Allan key or lift the top cover by removing the 4 Allan screws and lifting If you have to completely re move the top cover then unplug the cable to the remote display C t Heat P O ti M Versi 5 w ds Mes ump Operational Manual Version Kensa Heat PL mps Introduction Safety information c O PD O ucl O gt O O m G QO c w O Fault Finding Warranty UONSNPOANU uoneuJ40Jul AJajes G D 5 D s o 9 O Q c O et h O 3 ET 5 au pul 3jneJ Aiue le AA 2 6 7A 8 9 Turn off the heat pump off internally Turn the compressor s off using the 25 32 Amp MCB s and turn the controls off using the 4 Am
23. s and turn on the 4 Amp MCB s The display should light up and the heating system pump should start running Check the motor shaft is actually spinning Replace the plug back into the front of the pump and repeat the process for the ground side pump Note the ground side pump switches on a few sec onds after the 4 Amp MCB s have been turned on you can often hear a small clunk as the contactor engages You may need to bleed air and or top up the system pressures again after checking the pump operation Test anti freeze When the system was installed the antifreeze concentration should have been checked but if that wasn t done or if large amounts of mains water have been added into the system since installation the antifreeze may not have enough concentration If you suspect this then you should check the concentration Take a sample using the ground side Schrader valve and test with a refractom eter to ensure the system is protected down to 10 C or lower If you do not have a refractometer then we will be happy to test your anti freeze sample and can provide sample tubes on request Run compressor Once you confirm that the system has enough pressure is air free and the pumps run correctly turn the 25 32 Amp compressor MCB s on to run the compressor s Check B readings BO2 is the temperature of the flow from the ground to the heat pump BO3 is the temperature of the return from the heat pump to the ground There should be a difference
24. su y 12e3u00 aseajd payejnsjes aue sainsy s u1 moy UO s e1 p pue S UaIINI Sunje3s Jo UONEIyLIEII 104 sduind Jajem y nqu u1oq jo uonduunsuoo JaMOd y sOpnj9U Wa sks uonunqiJajsip Jeay JY 01 Mo 2 Sep 9 punos y WO 2 Bap 0 TESVING Sg 0 pauleyqo sanj eA aue s s u1u Jed uri s ln3u au 400jj4epun 0 oJ 2 Sep GE punos y WOI 2 BAP 0 TTSUTNG Sg 0 sues e uo paseg aie aAoqe saoJnSy ul OZLSX006X006 ZH OS DV SHOA OF Z ASeUd BUIS jugJJno jueJJno yu uino SUDJe1s suluuns SuiuunJ indino 9ZIS uOn293uuo SUOISUBWIG sJossoJduJo Jp JeuUIWON e id e id XeN guuJ9u p JossaJduuo ulm s re3oq e iuuoo L Pedwoy sinjesodwa uSiH esuay S E KensaHeat Pumps Compact Heat Pump Operational Manual Version 5 Page 11 of 22 UONSNPOANU uoyewulojul A19jeg G D 2 D gt E O O c O ct O gt 3 Ep O 2 Suiput 3jneJ Aiue le AA 4 Operational Instructions Always ensure that individuals using the appliance have read and fully understood the Operation instructions Do not operate the appliance with the cover removed Do not operate the appliance in anything other than dry conditions Do not exert any strain on electrical or pipe connections to the appliance Do not put any foreign object into the appliance Do not spill water or any other substance onto the appliance 4 1 Maximising the efficiency of the heat pump In order to incre
25. turer s instructions No fault Check the pressure gauges below the two water pumps The pressures should be be tween 1 and 2 bar If below this the pressure needs to be increased above 1 8 bar To increase the pressure in either circuit the cold fill valve will need to be opened The Ground cold fill is provided with every Kensa heat pump and is found on the right hand side of the heat pump underneath The heating distribution system should have it s own fill point Bleed the heating distribution system pump within the heat pump using the schrader valve above the pump See Fig 3 and 4 Check that the water pumps are operational and spin the impellors see section 4 3of the Installation Manual No action Check that the water pumps are operational and spin the impellors see section 4 30f the Installation Manual If symptom persists outside of the two listed circumstances contact Kensa Technical de partment No action Check antifreeze has been added and unit commissioned correctly Check that the water pumps are operational and spin the impellors see section 4 3 of the Installation Manual Ensure no flow restrictions and wait approxi mately 4 hours with the machine turned off for automatic reset Refer to Kensa Technical department Compact Heat Pump Operational Manual Version 5 Page 18 of 22 KensaHeat Pumps 6 Complaint Procedure Introduction The expertise of members and the assuran
26. und into the fluid approximately 5 C This brine is then passed through one side of a heat exchanger called the evaporator and a refrigerant through the other The refrigerant has a very low boiling point and by absorbing the energy in the brine this causes the refrigerant to evaporate The refrigerant gas is then passed through a compressor where its pressure is increased which in turn increases its temperature This high pressure hot gas then flows around a second heat exchanger called a condenser with the heating distribution fluid passing through the other side of the heat exchanger Energy is then transferred from the refrigerant into the heating distribution system this in turn causes the refrigerant to condense This high pressure cold refrigerant is then passed through an expansion valve or throttle and the pressure is reduced The whole cycle is then repeated GSHPs are an extremely energy efficient technology with every unit of electricity used to drive the pumps and compressor producing between 3 and 4 units of heat The Kensa Compact Heat Pump is designed to provide a low cost renewable heat source for a buildings heating system In addition and if required the Kensa Compact can also provide domestic hot water Heat pumps can provide lower running costs and will generate significantly lower carbon emissions compared with traditional fossil fuels C t Heat P O ti M Version 5 a ump Operational Manual Version Kensa
27. y breach of trust or fraudulent conversion products that have been altered subject to misuse negligence accidental damage abnormal use or service operated or installed in a manner contrary to Kensa Heat Pumps Ltd published or written instructions products subjected to abrasion or corrosion products operated in connection with any liquid source that contains impurities which are corrosive to copper C t Heat P O ti M Versi 5 w RE a ump Operational Manual Version Kensa Heat PL mps products operated in a temperature range inconsistent with Kensa Heat Pumps Ltd s published or written recommendations 7 1 5 Care of Duty The product must be handled with normal care and attention to minimise the risk of damage or loss 7 1 6 In the event of Damage The installing contractor Contractor or if the installing Contractor is not available Kensa Heat Pumps Ltd must be notified of any damage immediately and no later than six months after you first became aware of the damage The commissioning certificate received on installation should be appended to the claim If a claim for compensation is made after the deadline specified above or if a commissioning certificate cannot be produced the guarantee shall not apply 7 1 7 Replacement Parts Kensa Heat Pumps Ltd s warranty obligations with respect to replacement parts are identical to those with respect to original parts provided however in no event shall the warranty term f
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