Ecodan EHPT15X-UKHDW1S Installation Manual Download Page 5

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IMPORTANT NOTE TO THE INSTALLER

The pre-plumbed cylinder is specifically designed to be installed in conjunction with a Ecodan PUZ-(H)WM air source heat

pump. The pre-plumbed cylinder is available in either STANDARD 22mm, STANDARD 28mm or SLIMLINE models.

Please read these instructions before commencing installation. Unvented cylinders are a controlled service as defined in

the latest edition of the building regulations and should only be carried out by a competent, qualified installer. The relevant

regulations are:

England and Wales - Building Regulation Part G Section G3

Scotland - Technical Standard Section 4

Northern Ireland - Building Regulation Part F

After installation the Benchmark log book and included commissioning sheets must be completed and left along with these

instructions with the householder for future reference.

Any water distribution and central heating installation must comply with the relevant recommendations of the current version

of the Regulations and British Standards listed below:

Building Regulations

IEE Requirements for Electrical Installations (BS 7671)

Water Regulations

Manual Handling Operations Regulations

British Standards BS6798, BS5449, BS5540:1, BS5540:2, BS8558 and BS7593

Health and Safety Document No. 635

Only qualified and/or competent individuals should install the Ecodan system. Mitsubishi Electric’s notes must not be taken

as overriding statutory obligations.

An annual inspection of the system will be required to ensure safe, long term operation.

The information in this manual is provided to assist generally in the selection of equipment. The responsibility for the selection

and specification of the equipment must however, remain with the installer and any designers or consultants concerned

with the design, specification and installation of the system. Please note: Mitsubishi Electric does not therefore accept any

responsibility for matters of design, selection or specification or for the effectiveness of an installation containing one of its

products unless specifically requested to do so and expressly agreed in writing by Mitsubishi Electric at production stage.

All goods are sold subject to Mitsubishi Electric’s Terms and Conditions of Sale.

Important Note

Included with the Ecodan product is information about how to register the Mitsubishi Electric user guarantee. Please direct

the end user to register within 3 months of commissioning and ensure they benefit from the applicable standard guarantee

for their Ecodan heat pump and any cylinder or interfacing equipment purchased from Mitsubishi Electric by you as installer.

The guarantee applies where the installation address is in England, Scotland or Wales only and for domestic use.

This registration should be completed only by the end user/system owner so please ensure that the information about how

to register the Mitsubishi Electric user guarantee reaches them. There are various options to register the guarantee and

details can be found online at https://les.mitsubishielectric.co.uk The registration is logged by our warranty department. In the

unlikely event of failure of the Ecodan heat pump or any such cylinder or interfacing equipment purchased from Mitsubishi

Electric, registration of the guarantee ensures that warranty claims are processed efficiently. For further information on the

Mitsubishi Electric user guarantee please contact us by email: [email protected] or telephone 0161 866 6064.

Please Note

If you do not register the Mitsubishi Electric user guarantee then the product will only be guaranteed to the user by Mitsubishi

Electric for 12 months from the date of commissioning.

Our commercial guarantee to your user does not affect your user’s statutory rights or any consumer rights under applicable

national legislation.

NOTE: This manual is for revision A products only, manufactured on or after week 8 2022

see DATA label and drawing below for details

Year

Week Revision

Serial No

XYZ22080001AC

Summary of Contents for EHPT15X-UKHDW1S

Page 1: ...USTOMER FOR FUTURE REFERNCE EHPT15X UKHLDW1S EHPT17X UKHLDW1S EHPT15X UKHDW1S EHPT17X UKHDW1S EHPT21X UKHDW1S EHPT21X UKHDW1L EHPT25X UKHDW1L EHPT30X UKHDW1L Renewable Heating Technology January 2022 PRE PLUMBED UNVENTED MAINS PRESSURE WATER HEATER WITH FTC6 CONTROL SYSTEM FOR USE WITH ECODAN PUZ H WM AIR SOURCE HEAT PUMP RANGE Doc No 607431 ...

Page 2: ...F SYMBOLS DISPLAYED ON THE UNIT WARNING This mark is for R32 refrigerant only Refrigerant type is written on nameplate of outdoor unit Read the OPERATION MANUAL carefully before operation Service personnel are required to carefully read the OPERATION MANUAL and INSTALLATION MANUAL before operation Further information is available in the OPERATION MANUAL INSTALLATION MANUAL and the likes SAFETY NOT...

Page 3: ...ety heat emitters in Zone2 circuit Do not install the unit where combustible gases may leak be pr Do not use means to accelerate the defrosting process or to clean other than those recommended by the manufacturer heater Do not pierce or burn Be aware that refrigerants may not contain an odour Pipe work shall be protected from physical damage The installation of pipe work shall be kept to a minimum...

Page 4: ...r thermistors primary circuit drain off valve DHW circuit drain off valve DHW secondary return tapping 210L only low loss header flow sensor automatic air vent primary filling loop and pressure gauge a cylinder thermal cut out WI Fi adaptor and FTC6 controller The pumps motorised valve and thermal controls are supplied pre wired The DHW expansion vessel is supplied loose for installation at a conv...

Page 5: ...sibility for matters of design selection or specification or for the effectiveness of an installation containing one of its products unless specifically requested to do so and expressly agreed in writing by Mitsubishi Electric at production stage All goods are sold subject to Mitsubishi Electric s Terms and Conditions of Sale Important Note Included with the Ecodan product is information about how...

Page 6: ...when lifting moving or manipulating into position DO NOT use the pre plumbed pipework for lifting or positioning the cylinder It is the responsibility of the installer to ensure all mechanical joints on the cylinder and pre plumbed pipework are checked for tightness prior to filling the system as these can become loose during transportation and positioning of the unit SITING THE UNIT The Pre plumb...

Page 7: ...ressure 0 35 MPa 3 5 bar Maximum design Rated pressure 0 8 MPa 8 bar Expansion relief valve setting 0 8 MPa 8 bar T P relief valve setting 90 C 1 0 MPa 10 bar T P relief valve manufacturers ref RWC PTEM 510003 Maximum primary circuit pressure 0 3 MPa 3 bar Maximum heating fluid temperature 85o C Storage capacity See Table 1 below Weight when full See Table 1 below OUTLINE SPECIFICATIONS The cylind...

Page 8: ... immersion heater and a primary heat pump flow rate of 20 l min Test method in accordance with EN12897 2006 Flow sensor behind controller Heat Pump circulating pump 3 Way motorised diverter valve Low loss header Automatic Air Vent FTC6 Controller Immersion heater housing Primary circuit pressure gauge Primary circuit drain off point Heating zone 1 circulating pump THW5A thermistor boss Temperature...

Page 9: ...J THW5A SENSOR POCKET K WI FI ADAPTOR INCLUDED INSTALLER TO LOCATE AND MOUNT CAPACITY 210 250 300 A 1509 1761 2075 B 1050 1175 1385 C 1370 1370 1370 D 880 1136 1450 E 1370 1370 1370 F 270 270 270 G 350 350 350 J 925 1005 1193 K Installer to locate and mount Fig 2a Dimensions and EU Product Fiche 28mm Standard Models MODEL Energy efficiency class C C C Standing loss in W 65 0 75 0 85 8 Storage volu...

Page 10: ...MPRESSION 3 4 BSP M J THW5A SENSOR POCKET K WI FI ADAPTOR INCLUDED INSTALLER TO LOCATE AND MOUNT CAPACITY 150 170 210 A 1131 1257 1509 B Not fitted Not fitted 1050 C 1122 1122 1122 D 505 630 880 E 1122 1122 1122 F 194 194 194 G 350 350 350 J 675 815 925 K Installer to locate and mount MODEL Energy efficiency class B B C Standing loss in W 47 9 51 2 63 7 Storage volume V in Litres 150 170 210 Techn...

Page 11: ... 22mm COMPRESSION 3 4 BSP M J THW5A SENSOR POCKET K WI FI ADAPTOR INCLUDED INSTALLER TO LOCATE AND MOUNT CAPACITY 150 170 A 1516 1690 B 1127 1127 C 909 1083 D 1127 1127 E 194 194 F 350 350 J 943 1117 K Installer to locate and mount Fig 2c Dimensions and EU Product Fiche 22mm Slimline Models MODEL Energy efficiency class C C Standing loss in W 58 3 66 3 Storage volume V in Litres 150 170 Technical ...

Page 12: ...AR WR51 E receiver zero 3 1 220 240 V 50Hz single 16 220 240 V 50Hz single 3 13 16 DHW and 1 hea ng zone 80 5 90 1 0 10 0 0 8 8 0 Duplex stainless steel Expanded polyurethane PU 60 Mechanical zones Op onal wireles room thermostat and wireless receiver STANDARD 0 35 3 5 22 22 28 22 Heat Pump Grundfos UPM3L 25 75 130AZA Hea ng Grundfos UPM3 AUTO 25 70 130 DHW Grundfos UPSO 15 60 CIL2 14 17 24 32 40 ...

Page 13: ...ze A PAR WT50 E controller PAR WR51 E receiver zero 3 1 220 240 V 50Hz single 16 220 240 V 50Hz single 3 13 16 DHW and 1 hea ng zone 80 5 90 1 0 10 0 0 8 8 0 Duplex stainless steel Expanded polyurethane PU 50 Mechanical zones Op onal wireles room thermostat and wireless receiver SLIMLINE 0 35 3 5 22 22 14 17 24 l min 80 0 3 3 0 Contained within outdoor unit 75 Dimensions mm Weight empty full kg Ma...

Page 14: ...oor unit installed It may be necessary to add an additional pump to the system depending on the length and lift of the primary circuit If the additional pump s have current greater than 1A please use appropriate relay If the second pump is being used in the primary circuit between the cylinder unit and the outdoor unit then the signal cable should be wired to TBO 1 termi nals 1 and 2 OUT1 In this ...

Page 15: ...selection In this case unlock the key lock by pressing the button for 10 seconds d During a period of 10 seconds press shortly on the and the pump switches to the next setting e To select between the settings instantly press the button until you find the setting you want If you pass the setting you will need to continue until the setting appears again It is not possible to go back f Release for mo...

Page 16: ...curve AUTOADAPT Constant pressure The head pressure is kept constant irrespective of the heat demand The duty point of the circulator will move out or in on the selected constant pressure curve depending on the heat demand in the system Constant curve The circulator runs on a constant curve which means that it runs at a constant speed or power The duty point of the circulator moves up or down the ...

Page 17: ...50 Pressure drop bar Flow rate l min Pressure Drop for Large Cylinder Models 28mm Space Hea ng Circuit Hot Water Circuit 0 00 0 50 1 00 1 50 2 00 2 50 5 10 15 20 25 30 35 40 45 50 Pressure drop bar Flow rate l min Pressure Drop for Small Cylinder Models 22mm Space Hea ng Circuit Hot Water Circuit ...

Page 18: ... AND FITTINGS Fig 3 Pressure reducing valve Fig 4 Pressure relief valve 8 bar PRESSURE RELIEF VALVE Fig 4 above Should a balanced pressure cold water supply be required to cold water outlets such as thermostatic shower mixer valves or combination taps the cold water balanced draw off connection should be taken from between the pressure reducing valve and the pressure relief valve see Fig 4 above B...

Page 19: ...ndary circuit This should be done if the capacity of the secondary circuit exceeds 10 litres Pipe capacity copper 15mm O D 0 13 l m 10 litres 77m 22mm O D 0 38 l m 10 litres 26m 28mm O D 0 55 l m 10 litres 18m Fig 5 Secondary circulation connection A B C D T P RELIEF VALVE DISCHARGE PIPEWORK TO TUNDISH LEFT HAND INSULATING PIECE PLASTIC COVER CLIP COVER INTO PLACE RIGHT HAND INSULATING PIECE Fig 6...

Page 20: ...KEY 1 Heat Pump 13 Scale Trap 25 Primary circuit draw off point 2 Cylinder 14 DHW Circulating Pump 26 Automatic Air Vent 3 FTC6 Controller 15 Flow Sensor 27 Differential Pressure Bypass Valve 4 Immersion heater 16 Primary Pump 28 Strainer 5 3 5 bar Pressure reducing Valve incorporating 17 Primary Expansion Vessel 29 Isolating Valve Strainer and Check Valve supplied loose 18 Primary Pressure Relief...

Page 21: ...here valves other than the temperature and pressure relief valve from a single unvented hot water system discharge by way of the same manifold that is used by the safety devices the manifold should be factory fitted as part of the hot water storage system unit or package Tundish 3 54 The tundish should be vertical located in the same space as the unvented hot water storage system and be fitted as ...

Page 22: ... the end of the pipe below a fixed grating and above the water seal c downward discharges at low level i e up to 100mm above external surfaces such as car parks hard standings grassed areas etc are acceptable providing that a wire cage or similar guard is positioned to prevent contact whilst maintaining visibility and d discharges at high level e g into a metal hopper and metal downpipe with the e...

Page 23: ...E OF DISCHARGE PIPE D1 MINIMUM SIZE OF DISCHARGE PIPE D2 FROM TUNDISH MAXIMUM RESISTANCE ALLOWED EXPRESSED AS A LENGTH OF STRAIGHT PIPE i e NO ELBOWS OR BENDS RESISTANCE CREATED BY EACH ELBOW OR BEND G 1 2 15mm 22mm 28mm 35mm UP TO 9m UP TO 18m UP TO 27m 0 8m 1 0m 1 4m G 3 4 22mm 28mm 35mm 42mm UP TO 9m UP TO 18m UP TO 27m 1 0m 1 4m 1 7m G1 28mm 35mm 42mm 54mm UP TO 9m UP TO 18m UP TO 27m 1 4m 1 7...

Page 24: ...is toxic and MUST NOT be used in the primary water circuit in case of any cross contamination of the potable water circuit 2 For 2 zone valve ON OFF control Propylene glycol MUST be used New and Existing Installations primary water circuit Before connecting the outdoor unit thoroughly cleanse the primary pipework of building debris solder fluxes etc using a suitable chemical cleansing agent Flush ...

Page 25: ...essel volume L ε Water expansion coeffi cient G Total volume of water in the system L P Expansion vessel setting pressure MPa P Max pressure during operation MPa Graph below is for the following values ε at 70 C 0 0229 P 0 1 MPa P 0 3 MPa A 30 safety margin has been added V ε G P 0 098 P 0 098 1 0 0 5 10 15 20 25 50 100 150 200 250 300 350 400 Expansion vessel sizing Expansion vessel volume L Syst...

Page 26: ...t pump electric heater Heater Electric heater only Boiler Hybrid Heat pump heater Boiler Auxiliary settings Heat source setting Pump speed ON OFF Delay ON OFF Delay Running Interval Minimum Maximum Delay ON OFF Booster heater Immersion heater Menu Analog output Priority Interval Minimum Maximum Heat pump settings Quiet mode Long press Heat Pump Flow Rate Table Model Minimum L min Maximum L min PUZ...

Page 27: ...The controls provided with the Air Source Heat Pump pre plumbed cylinder will ensure the safe operation of the unit within a central heating system Connection to the various system components is made via the FTC6 Controller fitted to the front of the Pre plumbed cylinder refer to the Manual supplied for the FTC6 Controller and the terminal identification labels within the FTC6 Controller to aid in...

Page 28: ...re control Inactive Active OFF SW2 8 Flow sensor WITHOUT Flow sensor WITH Flow sensor ON SW3 SW3 1 Room thermostat 2 input IN6 logic change Zone2 operation stop at thermostat short Zone2 operation stop at thermostat open ON SW3 2 Flow switch 2 and 3 input logic change Failure detection at short Failure detection at open OFF SW3 3 OFF SW3 4 Electric energy meter WITHOUT Electric energy meter WITH E...

Page 29: ...CN3C BU CNPWM WH 1 5 CNRF WH CN105 RD CNIT BU 1 2 CN20 RD TBI 1 LED3 LED4 TAB1 8 1 2 3 4 5 6 1 2 3 4 5 6 7 8 CNP1 WH TBO 1 1 5 3 1 5 SW6 1 3 1 5 1 5 LED2 1 SW1 8 1 SW2 8 1 SW3 1 SW4 6 8 1 SW5 LED1 1 3 1 3 CNP4 RD TBO 2 1 2 3 4 5 6 TBO 3 CNV1 WH 1 3 5 1 2 3 4 5 6 7 8 TBO 4 CNIH OG 1 3 CNBHT BK 1 3 CN21 YE 1 3 CNW12 RD 1 4 CNW5 BU 1 4 1 4 CN1A WH 6 8 7 5 4 3 2 1 TBI 2 6 8 7 5 4 3 2 1 TBI 3 6 8 7 5 4...

Page 30: ... Zone1 operation stop at thermostat open ON SW2 2 Flow switch1 input IN2 logic change Failure detection at short Failure detection at open OFF SW2 3 Booster heater capacity restriction Inactive Active OFF SW2 4 Cooling mode function Inactive Active OFF SW2 5 Automatic switch to backup heat source op eration When outdoor unit stops by error Inactive Active OFF SW2 6 Mixing tank WITHOUT Mixing tank ...

Page 31: ...mp Blue Brown To Heating pump Blue Brown To DHW circulating pump To 3 way valve actuator head DHW pump connection to PCB by means of red JST plug connector to socket CNP4 To flow sensor assembly connection to PCB via white JST connector to CN1A Tank sensor connection to PCB by means of Blue JST plug connection to socket CNW5 To lower tank sensor to be inserted onto spare pocket on immersion plate ...

Page 32: ... 5 FTC Master Outdoor unit 2 2 Min 0 3 FTC Master Outdoor unit earth Circuit rating FTC Master L N 3 230V AC FTC Master Outdoor unit S1 S2 3 FTC Master Outdoor unit S2 S3 3 24V DC 2 Max 120 m 3 The values given in the table above are not always measured against the ground value Notes 1 Wiring size must comply with the applicable local and national codes 2 FTC Master unit outdoor unit connecting co...

Page 33: ...ed Electric heater DHW To select WITH ON or WITHOUT OFF booster heater or immersion heater individually in DHW mode Delay The minimum time required for the booster heater or immersion heater to turn ON from after DHW mode has started This setting is applied for both booster and immersion heater Mixing valve control 2 Running Period from valve fully open at a hot water mixing ratio of 100 to valve ...

Page 34: ... 1 2 Boiler output OFF ON non voltage contact 220 240 V AC 30 V DC 0 5 A or less 10 mA 5 V DC or more OUT11 TBO 3 5 6 Error output Normal Error 230 V AC 0 5 A Max 3 0 A b OUT12 TBO 3 7 8 Defrost output Normal Defrost 230 V AC 0 5 A Max OUT13 TBO 4 3 4 2 way valve 2a output 2 OFF ON 230 V AC 0 1 A Max OUT14 CNP4 Water circulation pump 4 output DHW OFF ON 230 V AC 1 0 A Max 4 0 A a OUT15 TBO 4 1 2 C...

Page 35: ...ction at open OFF SW2 3 Booster heater capacity restriction Inactive Active OFF SW2 4 Cooling mode function Inactive Active OFF SW2 5 Automatic switch to backup heat source op eration When outdoor unit stops by error Inactive Active OFF SW2 6 Mixing tank WITHOUT Mixing tank WITH Mixing tank OFF SW2 7 2 zone temperature control Inactive Active OFF SW2 8 Flow sensor WITHOUT Flow sensor WITH Flow sen...

Page 36: ...he LED lamps on the FTC control board are all 6 ory cards however these operations are not always guaranteed as the speci Manufacturer Model Tested in Verbatim 44015 Mar 2012 SanDisk SDSDB 002G B35 Oct 2011 Panasonic RP SDP04GE1K Oct 2011 Arvato 2GB PS8032 TSB 24nm MLC Jun 2012 Arvato 2GB PS8035 TSB A19nm MLC Jul 2014 SanDisk SDSDUN 008G G46 Oct 2016 Verbatim 43961 Oct 2016 Verbatim 44018 Oct 2016...

Page 37: ...EATER MUST BE EARTHED The supply cable for the immersion heater must be a minimum of 2 5mm2 3 core HO5 VV F sheathed Do NOT energise the heater until the DHW tank is full of water Also do NOT energise any immersion heater if any sterilisation chemicals remain in the DHW tank as this will cause premature failure of the heater DO NOT BYPASS THE THERMAL CUT OUT IN ANY CIRCUMSTANCES INSTALLATION Wi Fi...

Page 38: ...re Target room temperature Compensation curve 5 OPTION Pressing the function button below this icon will dis play the option screen 6 Increase desired temperature 7 Decrease desired temperature 8 Z1 Z2 Pressing the function button below this icon switch es between Zone1 and Zone2 Information Pressing the function button below this icon displays the information screen 9 Space heating cooling mode H...

Page 39: ...ngs Menu The main settings menu can be accessed by pressing the MENU button To re duce the risk of untrained end users altering the settings accidentally there are two access levels to the main settings and the service section menu is password protected User Level Short press If the MENU button is pressed once for a short time the main settings will be displayed but without the edit function This ...

Page 40: ...ng compensation curve Heating room temp Heating compensation curve Compensation curve preview Compensation curve edit F1 F1 F3 F1 F2 F2 F2 F2 F4 F3 F3 F3 F4 F4 F3 F4 F2 F4 F3 F4 F2 F3 F4 DHW Date Time yyyy mm dd hh mm EN FR DE SV ES IT DA NL FI NO PT BG PL CZ RU TR SL OFF Room Tank Room Tank OFF ON hh mm hh mm AM AM hh mm C F Room RC zone select Sensor setting Zone1 Zone1 Zone2 Holiday mode settin...

Page 41: ... Hybrid settings Ambient Energy price CO2 emission Heat source Schedule Electricity Electric Heat pump capacity ON OFF Boiler Boiler Target temp Start Finish Temp increase step Temp decrease step Max temp Max temp period Increase interval Decrease interval Booster heater 2 capacity Booster heater 1 capacity Flow temp Increase Flow temp Decrease Priority Ambient Cost CO2 Ambient Intelligent setting...

Page 42: ...al or Eco mode Normal mode will heat the water in the DHW tank more quickly using the full power of the heat pump Eco mode takes a little longer to heat the water in the DHW tank but the energy used is reduced This is because heat pump operation is restricted using signals from the FTC based on measured DHW tank temperature Note The actual energy saved in Eco mode will vary according to outdoor am...

Page 43: ...desired water temp has been reached 1 120 min 30 Please note that LP mode uses the assistance of electric heaters to supple ment the energy input of the heat pump Heating water for long periods of careful consideration to the necessity of legionella prevention treatment whilst not wasting energy by heating the stored water for excessive time periods The end user should understand the importance of...

Page 44: ...ional function to prevent the water circuit from freezing when outdoor ambient temperature drops Flow t The target outlet water temperature at water circuit when operating in Freeze stat function 2 Outdoor ambient temp Minimum outdoor ambient temperature which freeze stat function will begin to operate 3 20ºC Simultaneous Operation For periods of very low outside temperature this mode can be used ...

Page 45: ...on of Heater whilst a signal is being sent to IN5 performs electric heater only operation and the selection of Boiler performs boiler operation Energy monitor settings In this menu all parameters required to record the consumed electrical energy and the delivered heat energy which is displayed on the main remote controller can be set The parameters are an electric heater capacity supply power of w...

Page 46: ...Yes Hot water temp 60 C 70 C 2 65 C Frequency 1 30 days 15 days Start time 00 00 23 00 03 00 Max operation time 1 5 hours 3 hours Duration of maximum temp 1 120 min 30 min Heating Cooling 12 Zone1 operation mode Room temp Zone2 operation mode 1 Compensation curve Compensation curve point Zone1 outdoor ambient temp 20 C 60 C 50 C Zone2 outdoor ambient temp 1 20 C 60 C 40 C point Zone1 outdoor ambie...

Page 47: ... Standard Heater Boiler Hybrid 7 Standard Heat pump setting Minimum 0 100 L min 5 L min Maximum 0 100 L min 100 L min Quiet mode Day Mon Sun Time 0 00 23 45 Quiet level Normal Level1 Level2 Normal Operation settings Heating operation 8 Flow temp range 10 Min temp 20 45 C 30 C Max temp 35 60 C 50 C Room temp control 15 Mode Normal Fast Normal Interval 10 60min 10min Heat pump thermo On Upper limit ...

Page 48: ...F Boiler operation Boiler operation Outdoor thermostat IN5 Heater operation Boiler operation Boiler operation Thermo ON output Zone1 Zone2 Zone1 2 Zone1 2 1 The settings related to Zone2 can be switched only when 2 Zone temperature control is enabled when DIP SW2 6 and SW 2 7 are ON 2 For the model without both booster and immersion heater it may not reach the set temperature depending on the outs...

Page 49: ...y fitted ones are tight Insulate pipework between cylinder and outdoor unit Thoroughly clean and flush system of all debris see page 24 for instruction Fill cylinder unit with potable water Fill primary heating circuit with water and suitable anti freeze and inhibitor as necessary Always use a filling loop with double check valve when filling the primary circuit to avoid back flow contamination of...

Page 50: ...50 Notes ...

Page 51: ...51 Notes ...

Page 52: ...usehold waste disposal service or the company where this product was purchased Residential Heating Ventilation Telephone 01707 278666 MELSmart Customer Services Support 0161 866 6089 Option 1 Air Conditioning Technical Option 4 Heating Technical Option 2 Spares Option 5 Returns Option 3 Warranty Option 6 Product Training Site Services Email livingenvironmentalsystems meuk mee com Website les mitsu...

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