Mitsubishi Electric PUHZ-85VAA 8.5kW Mono Installation And Maintenance Manual Download Page 1

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Air Source
Heat Pump

Outdoor units

PUHZ-W50VHA2 5kW Mono
PUHZ-85VAA 8.5kW Mono
PUHZ-W112VAA 11.2kW Mono
PUHZ-HW140VHA2 14kW Mono

Pre-plumbed Cylinders

EHPT15-17-21-25-30X-UKHCW
150,170,210,250 and 300 Litres

Packaged / Combi

EHPT20X-MHCW (200 Litres only)

Installation and Maintenance Manual

Installation Manual.indd 1

27/10/2019 15:13:51

Summary of Contents for PUHZ-85VAA 8.5kW Mono

Page 1: ...A 8 5kW Mono PUHZ W112VAA 11 2kW Mono PUHZ HW140VHA2 14kW Mono Pre plumbed Cylinders EHPT15 17 21 25 30X UKHCW 150 170 210 250 and 300 Litres Packaged Combi EHPT20X MHCW 200 Litres only Installation and Maintenance Manual Installation Manual indd 1 27 10 2019 15 13 51 ...

Page 2: ...p the Pre plumbed unit 12 Installing the Packaged Combi indoor unit 13 Heating and Hot Water Systems Packaged Combi 14 Setting Up the Combi Unit 15 Installing a Standalone System 16 Heating and Hot Water Systems Standalone 17 Wiring the Standalone System 18 Setting Up the Standalone System 19 Powering Up All Systems 20 Advanced Settings 22 What the unit comes with and what you will need 23 Wiring ...

Page 3: ...t in the field In 2016 we started distributing Hitachi s Yutaki range of modernised units In 2019 we took on Mitsubishi s range of reputable Ecodan units How we work Our approach is very straightforward If you have a set of plans or an outline of the requirements for a project send them on in to sales freedomhp co uk From there we will produce a heat loss calculation in line with today s standards...

Page 4: ... end user covering the heating system including the heat pump All the details are in the homeowner guarantee book Your installer will leave this with you You can fill this in and post it to Mitsubishi or do it online here les mitsubishielectric co uk homeowners register ecodan guarantee Follow the links for warranty and maintenance The unit is commissioned by the installer they need to fill in thi...

Page 5: ... the thermostats to turn it off you need to turn them down The thermostat sends a run signal to the heat pump Once the unit starts up it will take time to get to temperature it is not instant Within 10 minutes you should feel the radiators beginning to warm up Weather compensation The radiator temperatures will be lower than you are used to with a gas or oil boiler To add to this we run them in a ...

Page 6: ...t water cylinder loses almost no heat 1 3 a degree an hour if no hot water is used An anti legionella disinfection operation will be completed at a 3am every Wednesday morning The unit will heat the cylinder with the immersion to 60 C the hot water will be hotter on a Wednesday morning than the rest of the week If you don t require 24 7 hot water It is possible to time clock the hot water to reduc...

Page 7: ...unit pressure should be 1 5 bar We need to test the operation of the unit against the hot water cylinder So first we need to draw off 50 litres of water run a couple of taps for 5 mins to achieve this The unit should start up automatically in hot water mode if it doesn t on front screen scroll left highlight Heating press power to turn this off Press power button to switch on the unit press f4 but...

Page 8: ... unit with only 150mm to the rear and 1500mm to the front of the unit The connections on the back of the units are inch male thread The unit must have adequate drainage away from the unit it can produce up to 6 L hour of condensate If you are installing the unit at height you can install a drain pan under the unit but its best to let the unit drain into the ground The unit has an optional extra no...

Page 9: ...19 434 4 Standard 170 232 62 1 32 481 8 Standard 210 279 69 1 57 573 1 Standard 250 327 77 1 67 609 6 Standard 300 387 87 1 89 689 9 Solar 210 284 74 1 56 569 4 Solar 250 332 82 1 63 595 0 Solar 300 392 92 1 84 671 6 Slimline 150 204 54 1 45 529 3 Slimline 170 230 60 1 63 595 0 The Pre plumbed Cylinder Flow from HP Boiler Flow Return to HP Boiler Return Heating Return Heating Flow G3 kit already i...

Page 10: ...g flow and return Z1 Z2 Hot draw oﬀ Cold Feed If you want to use multi zone heating we recommend installing zone valves in heating flow as above Schematic of the Pre plumbed Cylinder Installation Manual indd 10 27 10 2019 15 13 59 ...

Page 11: ... and 6 Flow sensor 3 core connect to INIA it s 2 metres long Primary ﬂow water temperature sensor top grey 1 2m long Primary return water temperature sensor bottom black 1 2m long Primary Pump HP TB01 out 1 0 75mm 3 core Heating Pump Z1 TB01 out 2 0 75mm 3 core S1 S2 S3 L N Power supply 240V 20A for the 5kW 25A for 8 5kW 32A for 11 2kW 40A for 14kW Communication and power cable 3 core 1mm 220V AC ...

Page 12: ...an operate from 0 3 bar maximum Before Power Up The Outdoor Unit The outdoor unit does not need any settings made its ready to go from the factory The FTC5 control box The FTC5 control box needs the following dip switches set SW1 1 off no boiler SW1 2 off max hot water temp to 55c SW1 3 on for DHW tank SW1 4 on immersion heater SW1 7 on for monoblock unit SW2 1 off for remote thermostat SW2 8 on f...

Page 13: ...ary circuit is 28mm compression DHW circuit is 22mm compression The inlet control group is 15mm compression Pressure relief valve Primary circuit is G1 2 female T P relief valve is 15mm compression G1 2 female Combi units need a drain connection for the Robokit and condensation 287 5 1600 270 1870 Front Optional part PAC DP01 E J Electrical cable inlets A DHW Outlet 22mm compression B DHW Cold fee...

Page 14: ...aged Combi Note there is a pressure relief at the top of the unit for G3 it comes out in 15mm and don t forget drain for indoor unit Heating flow and return 28mm compression Z1 Z2 Header Buﬀer or Heat Exchanger Installation Manual indd 14 27 10 2019 15 14 10 ...

Page 15: ... we can operate from 0 3 bar maximum Before Power Up The Outdoor Unit The outdoor unit does not need any settings made its ready to go from the factory The FTC5 control box The FTC5 control box needs the following dip switches set SW1 1 off no boiler SW1 2 off max hot water temp to 55c SW1 3 on for DHW tank SW1 4 on immersion heater SW1 7 on for monoblock unit SW2 1 off for remote thermostat SW2 8...

Page 16: ...FTC control box remote controller and the tank sensor flow and return sensors Install the control unit indoors it s not waterproof The control kit comes with a 10m long remote controller cable It needs to be sited within 75m of the hot water cylinder But the standard tank sensor is 1 8m long and less than 100m from the outdoor unit The Control Box FTC5 The box is 393mm wide 422mm high 87mm deep In...

Page 17: ...components above as a kit You have to install the temperature sensors on the pipework they are colour coded Heating and Hot Water Systems Standalone Pump Z1 Header Buﬀer or Heat Exchanger Pump HP THW1 THW2 B A Pump Z1 Pump Z2 Installation Manual indd 17 27 10 2019 15 14 16 ...

Page 18: ...220V AC S1 live S2 neutral S3 comms Run signal from Stat or zone valves TBI 13 14 Power Supply for immersion only 13A 2 5mm 3 core Connect the 2 orange connectors together here if power comes from outdoor unit Immersion heater in tank 3 core 2 5mm Tank sensor 1 8m long DON T Cut Remote controller TBI 3 1 2 2 core ﬂex 0 75mm The run signal TB1 13 and 14 is NOT 240 Volts it s a low voltage contact 2...

Page 19: ...t so we can operate from 0 3 bar maximum Before Power Up The Outdoor Unit The outdoor unit does not need any settings made its ready to go from the factory The FTC5 control box The FTC5 control box needs the following dip switches set SW1 1 off no boiler SW1 2 off max hot water temp to 55c SW1 3 on for DHW tank SW1 4 on immersion heater SW1 7 on for monoblock unit SW2 1 off for remote thermostat S...

Page 20: ...on to heating and press 6 It should be set to compensation curve if not scroll with the F1 button till the graph shows As a default this is set to 50C flow temp at 10C ambient and 30C at 30 ambient If the outdoor unit is off the remote controller will not power up If the outdoor unit is off the remote controller will not power up Makes sure all your room thermostats are off and all underfloor run ...

Page 21: ...8 Press return arrow 4 times to get back to main screen To adjust hot water temp 1 Press return arrow to go back to the main screen 2 From the main screen press and hold it down for 5 seconds Note how the arrows go from white arrows in black boxes to black arrows in white boxes 3 Press the HW tap icon will be high lit press 4 The tap icon will show with Normal Press f2 button with the pencil icon ...

Page 22: ...ontroller and FTC back to factory set if you make a mistake 1 The buttons under the screen are called f1 f2 f3 and f4 2 Press menu bottom left button 3 Press f3 right arrow to service on the far right press twice 4 Scroll down using F1 down arrow 14 times to manual reset press main controller press 5 Main controller initialize Press F3 yes 6 You are back to a brand new controller 7 You can also se...

Page 23: ... vessel pressure gauge pressure relief valve and filling loop All Mitsubishi units have an expansion vessel inside it Pump The pre plumbed and combi unit units have a 9m pump installed inside 25 m separation on 22mm copper for the 5kW 25 m separation on 28mm copper for the 8 5kW 20 m separation on 28mm copper for the 11 2 and 14kW If your runs exceed this give us a call as you might need extra pum...

Page 24: ... See hybrid drawings Flow In most heating systems the flow rate through the unit changes with load when all the heat emitters are open the flow is high and when most of them are closed the flow rate reduces In a heat pump we cannot let this happen we need to keep the water through the heat pump at a constant speed To balance the flow through the emitters and the flow through the heat pump we need ...

Page 25: ...es you d connect the DHW valve to TBO 2 terminal 6 live and 4 Neutral the orange and grey wires are not used The heating valve needs to be connected to TBO 4 terminal 2 for live and terminal 1 for neutral When using multi zone heating systems on a header buffer or HEX When the stat is made it will drive its zone valve open inside the zone valve a switch links the orange to the grey wire when the v...

Page 26: ...26 www freedomhp co uk Installation Manual indd 26 27 10 2019 15 14 33 ...

Page 27: ...27 02380 274 833 sales freedomhp co uk Installation Manual indd 27 27 10 2019 15 14 33 ...

Page 28: ...ct at time of creation All brand product service names and logos are trademarks and or registered trademarks of their respective owners and are hereby recognized and acknowledged v271019 Freedom Heat Pumps Ltd Head Office Unit 2 Warrior Park Eagle Close Chandlers Ford Hampshire SO53 4NF Northern Office Unit 5 Roundhouse Court Buckshaw Village Chorley Lancashire PR7 7JN Tel 02380 274 833 Email sale...

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