Mitsubishi Electronics PEH-8MYA, PE-8MYC, PE-15MYC, PE-7MYC Piping connection, Case of Brazing type

Page 94

Piping connection

Warning.

Please follow the following procedures, during the piping connection work is carried out.

If the procedures are not followed properly, the refrigerant and valve sheet might gush out from the ball valve. It might cause the injury.

In case of Brazing type

1.Open the ball valve cap before removing the by-pass tube. Then, turn the knob of the ball valve from ’close’ to ’open’

position.

2.Please repeat to close and open the ball valve of gas and liquid side at the same time (3 times or more). And finally make sure the ball valve is at close position.

CLOSE

OPEN

3. Cut part A (two places) of the by-pass tube as shown in figure below.

CUT

CUT

Caution

There will be small amount of refrigerant gushed out of the by-pass tube at the moment.

4.Make sure that the ball valve is wrapped with enough wet cloth, during the brazing of the by-pass tube (for cooling purpose). Make sure the temperature of ball valve is below 100 degree centigrade. (If the temperature of the ball valve is over 100 degree centigrade, the refrigerant and valve sheet might gush out from the ball valve. It might cause the injury.)

enough wet cloth

5.Please make sure the ball valve is cool enough when removing the by-pass tube. Wait for a while for further cooling of the ball valve, before the piping connection work begins.

6.When the piping connection begins. Again, make sure that the ball valve is wrapped with enough wet cloth, during the brazing for cooling the ball valve. Make sure the temperature of ball valve is below 100 degree centigrade. (If the temperature of the ball valve is over 100 degree centigrade, the refrigerant and valve sheet might gush out from the ball valve. It might cause the injury.)

7.Before charging the refrigerant, vacuum the pipes to clear all the air and water.

8.Charge the additional amount of refrigerant according to the table.

9.Turn the knob of the ball valve to ’open’ position after leak check.

10.Finally, put the cap back to the ball valve.

- 93 -

Image 94
Contents Data Book Contents Safety for USE For correct installationDo not wash the unit with water Indoor unit Complete Line UPOutdoor unit Features DescriptionsMechanical Specifications Typical Installation ExampleMODEL-DESIGNATION Breakdown 10 M Y CSpecifications PE-7~20MYC Cooling onlyPEH-5,7,8MYA Heat pump PEH-10,15,20MYA Heat pump Electrical Data PE-7~20MYC-EUPEH-5,7,8MYA-EU HeatingPEH-10,15,20MYA-EU Selection Procedure Model Selection With actual examplesEfficiency Calculation Calculation of net capacityCooling Capacity Standard Air Flow Capacity TablesFactor for Various Air Flow Heating Capacity Standard Air Flow PE-7MYC-EU , PEH-7MYA-EU PEH-7MYA-EU PE-8MYC-EU , PEH-8MYA-EU combined with PUH-8MYC1-EU PEH-8MYA-EU Use for low ambient cooling partsPE-8MYC-EU , PEH-8MYA-EU combined with PUH-8MYE-EU PE-8MYC-EU , PEH-8MYA-EU combined with PUH-8ME-EU Combined with PUH-8MYE-EUPE-10MYC-EU , PEH-10MYA-EU combined with PUH-10MYC1-EU PEH-10MYA-EU PE-10MYC-EU , PEH-10MYA-EU combined with PUH-10MYE-EU Combined with PUH-10MYE-EU PE-15MYC-EU 976 PEH-15MYA-EU 989 011 PE-20MYC-EU Use for low ambient cooling parts PEH-20MYA-EU PEH-20MYC-EU AIR Volume CMM Operation Range CoolingPE-7MYC-EU PEH-7MYA-EU FAN PerformancePEH-5MYA-EU PE-8MYC-EU PE-10MYC-EU PEH-8MYA-EU PEH-10MYA-EUPE-15MYC-EU PEH-15MYA-EU PE-20MYC-EU PEH-20MYA-EUPulley outside dimensions are shown below Unit mm Indoor units Sound DataPosition mesurement Outdoor unitsPEH-5 Outline DimensionsPEH-7,8 28.6 PEH-10PEH-15 DRAINRc HOLES26PEH-20 Flange HOLES28Holes PUH-5PUH-7,8,10 Upper blow Holes 2-ø15 Ø19.053/4Ø15.885/8130 Refrigerant Pipe PUH-8ø25.41 PUH-10ø28.61-1/8 PUH-8,10 Side blowPU-15 Cable Entry 44 Holes 2-ø15Ø28.61-1/8 Ø15.885/8 PU-20PUH-15,20 Holes 6-ø15 Control Cable Entry ø27Duct work is local supply Wiring Diagrams PE-7MYC-EU StandardInternal thermostat indoor fan PE-8,10MYC-EU StandardOver current relayfanI/D,O/D PE-15MYC-EU Standard PE-20MYC-EU Standard TB1PE-7MYC-EU Special Order Anti Short Cycle Timer PE-8,10MYC-EU Special Order Anti Short Cycle Timer Internal thermostatindoor fanPE-15MYC-EU Special Order Anti Short Cycle Timer PE-20MYC-EU Special Order Anti Short Cycle Timer Symbol Name MC1,2 Compressor motor52F1 Contactor fan I/D 23C Ambient temperaturePE-7MYC-EU Special Order LOW Ambient Cooling 49F Internal thermostatfan O/DPE-8,10MYC-EU Special Order LOW Ambient Cooling PE-15MYC-EU Special Order LOW Ambient Cooling Do not change factory set value of Over current relaysAuxiliary relay fanI/D PE-20MYC-EU Special Order LOW Ambient Cooling30FZ Auxiliary relay fanI/D PEH-5MYA-EU Standard MF2Way valve PEH-7MYA-EU StandardThermostat defrost Option controller connectionC1~7 PEH-8,10MYA-EU StandardCR1 Surge killer PEH-15,20MYA-EU Standard MF2 Cool Heat CR1 Surge killer Timer Anti short cycle PEH-8,10MYA-EUPEH-15,20MYA-EU Special Wiring Anti Short Cycle Timer PEH-7MYA-EU Special Order LOW Ambient Cooling 52F1 Contactor fan I/D 52F2 Contactor fan O/D 52F4 PEH-8,10MYA-EU Special Order LOW Ambient CoolingMF2 Fan motor outdoor CR1 Surge killer 21S4 Way valve 26D1 Thermostat defrost 26LPEH-15,20MYA-EU Special Order LOW Ambient Cooling 63H1,2 High-pressure switch 26L1,251F1~5 PE-7,8,10MYC-EU Electrical Operation Flow ChartsPEH-5MYA-EU, PEH-7,8,10MYA-EU PE-15MYC-EU PE-20MYC-EU PEH-15,20MYA-EU PE-7,8,10,15,20MYC-EU Refrigerant SchematicsPEH-5,7,8,10,15,20MYA-EU Safety & Control Devices PE-7,8,10MYC-EU PE-15,20MYC-EUPEH-7,8,10MYA-EU Special Order Service refYear Physical Data PE-7,8,1015,20MYC-EUIndoor AIR Circuit Enclosure and Frame PEH Series PEH-5MYA-EU PE-8MYA-EU JH527YE JH521YE 596X1415 PUH-10MYC1-EU PUH-10MYE-EU PUH-15MYC1-EU PUH-20MYC1-EU Space required around unit Indoor unit InstallationOutdoor unit Ceiling Over Service-panelOver 500 PU-15 At a single installation Over Service PanelOver Service-panel Preparation before installing Indoor unitOver Service-panel 500 Nut Washer Installation of the unit Indoor unitOutdoor unit Nut M10 WasherDuct construction Lifting methodPiping connection Case of Brazing typeThrow away Fig By-pass tube Flange assy Extension pipe Valve knobPipe assy Extension pipe Use the attached new packing FigGood example Bad example Evacuation Airtight testAdditional refrigerant charge Drain piping Arrangement such as terminal block in control box Electric wiringControl module of outdoor unit PUH-5, 8 Control module of outdoor unit PUH-7, 8 Terminal block for connection wiresPower supply wires Control module of outdoor unit PU-20Method for connecting electric wire 60A Protection switch50A Selection of other capacities should beBefore starting the Trial run Putting condition of the belt=4.5mm Flexion loadW 1.4 2.2kg Outlet grille Instructions for USECheck points for operation Ceiling Ceiling Obstacle blocking air outletAdhesive Isopropyl MaintenanceFingermarks Neutral Grease Paste AlcoholTransfer of installation When beginning to use air conditioner againWhen the air conditioner is not to be used for a long time Transferring work, and constructionRegarding electric work Place for installationMaintenance and inspection Conseration of the noiseTrouble shooting At cooling, water which places to cooling pipingBefore starting operation HOW to Operate Option PAC-204RCDisplay section On / OFF Start an operationFor fan Selecting operation When selecting operationRoom temperature adjustment To change room temperature For coolingTimer Hold/Resume key Time settingDays timer key Clock keyTrouble shooting Error DisplaySpecification Guidelines Outdoor UnitMemo Mitsubishi Electric Corporation Data Book PE,PEH