Mitsubishi Electric PQFY User Manual Download

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Water Heating Unit

PQFY

FOR INSTALLERS

INSTALLATION MANUAL

For safe and correct use, please read this installation manual thoroughly before installing the PQFY unit.

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Summary of Contents for PQFY

Page 1: ...Water Heating Unit PQFY FOR INSTALLERS INSTALLATION MANUAL For safe and correct use please read this installation manual thoroughly before installing the PQFY unit ...

Page 2: ...1 A Thermistor B Plastic clip C Nylon clip D Installation manual E Insulation 2 A B Fig 2 0 1 C D E ...

Page 3: ...2 A Water pipe B Cooling heating thermistor C Aluminium tape field supply D Insulation E Tie band 6 Fig 6 0 1 A B C E D ...

Page 4: ...tdoor unit B TH1 C Water Pump D Water Cylinder E PQFY A Outdoor unit B Indoor fan coils C TH1 D Water pump E Underfloor piping F PQFY G TH1 H Water inlet pipe 6 6 Fig 6 1 1 Fig 6 1 2 D F A E C G C E A H B B D ...

Page 5: ...4 A Outdoor unit B Water pump C Heat exchanger D Water pump E Pool water F TH1H thermistor G PQFY H TH1H thermistor I Return water pipe 6 Fig 6 1 3 E C F A D B G H I ...

Page 6: ...oard B Distand signal ON OFF C Operation Signal D Error signal E Relays F M Net G TH1H H Liquid line thermistor internal I Gas line thermistor internal J LEV Control K Power L Transformer 7 Fig 7 0 1 J I K H G F L E B A C D ...

Page 7: ...e less than 16A E Pull box A B A C D E C C C C C C A B A C C A Terminal block for AHU controller indoor transmission cable B Terminal block for outdoor transmission cable C Remote controller B A A C C A Non polarized B Upper level TB15 C Remote controller D Lower level TB5 A A B C D C A Bunch of wires B Plug C Tube D Insulation tape A A A A B C D A Address switch B SW2 A B ...

Page 8: ... 12 6 3 1 Commissioning of Controller and Set point 12 7 Electrical wiring 13 7 2 Connecting remote controller PQFY and outdoor transmission cables 13 7 3 Connecting thermistor cable TH1 14 8 3 1 Connecting thermistor cables 14 7 4 Connecting distant signal line 14 8 Setting switches 14 8 1 Setting Addresses and Dip Switch Settings 14 Setting the PQFY address 15 8 2 Setting unit size Indexing 15 8...

Page 9: ...ure switch thermal switch or other protection device is shorted or operated forcibly or parts other than those specified by Mitsubishi Electric are used fire or explosion may result To dispose of this product consult your dealer Do not use a leak detection additive 1 2 Precautions for devices that use R410A refrigerant Caution Do not use the existing refrigerant piping The old refrigerant and refr...

Page 10: ...perty damage Be very careful regarding product transportation Two people should be used to carry products of 20kg or more Some products use PP bands for packaging Do not use any PP bands for a means of transportation Do not touch the heat exchanger fins Doing so may cut your fingers When transporting the outdoor unit suspend it at the specified positions on the unit base Also support the outdoor u...

Page 11: ...d and gas For constraints on pipe length and allowable difference of elevation refer to the outdoor unit manual Cautions on refrigerant piping Be sure to use non oxidative brazing to ensure that no foreign matter or moisture enter into the pipe Be sure to apply refrigerating machine oil over the flare connection seating surface and tighten the connection using a double spanner Provide a metal brac...

Page 12: ... TEMPERATURE MUST BE THERMOSTATICALLY CONTROLLED BY THE UNDER FLOOR SYSTEM THE PQFY WILL PROVIDE HOT WATER AT 45 DEGREES UNTIL SIGNALED TO DO OTHERWISE THERE IS NO ROOM TEMPERATURE CONTROL ON THE PQFY Note Water pumps are not supplied by Mitsubishi Electric 6 1 2 Heat Pump system with Domestic Hot Water The system should be set up as shown in Figure 6 1 2 with the TH1H strapped to the cylinder or ...

Page 13: ... on the desired water temperature the remote controller can be set from 19o C to 28o C and every 1 degree increment in between The corresponding water temperature the water will be heated to is shown below 6 3 1 Commissioning of Controller and Set point The table below shows the remote controller set point correlation to the water set point Please note that when a heating and cooling demand i e au...

Page 14: ...l be provided by the Air conditioner installation Power cable size more than 1 5 mm Fig 7 1 1 P 6 Selecting non fuse breaker NF or earth leakage breaker NV To select NF or NV instead of a combination of Class B fuse with switch use the following In the case of Class B fuse rated 15 A or 20 A NF model name MITSUBISHI NF30 CS 15 A 20 A NV model name MITSUBISHI NV30 CA 15 A 20 A Use an earth leakage ...

Page 15: ...e Pull the wires for operation command for operation signal and error signal through the flushing end glands Distant signal at the bottom of the controller Connect each wire to operation command A1 and A2 to operation signal D1 and D2 and to error signal D11 and D12 Notes After connecting each wire to the terminal tighten each nut tightly through which the wire runs Check that the bunch of wires d...

Page 16: ...e system at site Set them referring to technical data 8 2 Setting unit size Indexing In the case of the connection of a heat pump to the PQFY P140 250 if the PQFY is the only unit designed to run in heating at one time then measures should be taken to ensure the other water heating or air heating fan coils are not switched on at the same time This is to ensure that sufficient capacity is available...

Page 17: ... System Index is 120 So long as the PQFY is never run at the same time as the fan coils the system will run with no problems But if the fan coils run at the same time as the PQFY i e in heating the total heating capacity of the system will be a little over 12kW e g 2 PUHY P250YGM A can give up to 31 5kW of heating if a PQFY P140 15kW of heating is connected then the maximum capacity of heating fan...

Page 18: ...refrigerant piping work drain piping work electrical wiring work PQFY controller wiring work and switch setting turn on the main power at least 12 hours before starting operation in accordance with the outdoor unit installation manual Run the system PQFY with the water pumps field supplied and ensure that the water is heating 9 1 Setting Auto Mode on PAR 21 ...

Page 19: ...1 the controller must be left on the system With the remote controller the PQFY will operate as requested just like a normal fan coil To use a volt free contact first turn off the power to the indoor and outdoor then remove the controller Replace the orange plug and turn on the outdoor and indoor unit Terminal A1 and A2 now becomes a start stop volt free contact When the two terminals are closed s...

Page 20: ...and is based on the following EU regulations Low Voltage Directive 73 23 EEC Electromagnetic Compatibility Directive 89 336 EEC Please be sure to put the contact address telephone number on this manual before handing it to the customer MITSUBISHI ELECTRIC UK MITSUBISHI ELECTRIC UK TRAVELLERS LANE HATFIELD HERTFORDAHIRE AL10 8XB ...

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