Mitsubishi Electronics PUHY-YMC Control box and connecting posi- tion of wiring

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11.2.Control box and connecting posi- tion of wiring

a. Variable capacity unit

1.Remove the total of six screws at the top and bottom, and remove the service panel by pulling it forward. (see the figure below.)

A

A Service panel

2.Remove the two screws on the left and right-hand of the base of the control box and pull the overall cover downwards to detach it. (a dia- gram with the control box cover removed is shown below.)

J

B

F

LD1

C D A

E

L1 L2 L3 N

TB1	M1 M2 M1 M2 S

TB3 TB7

G H I

AINV board

BMAIN board

CTen position

DOne position

EAddress

FFANCON board

GPower source

HEarth screw

ITransmission line

JRELAY board

3.Connect indoor and outdoor units through the terminal block for trans- mission lines (TB3). Outdoor units and connections to central control systems go through the terminal block for centralized control (TB7). When making an indoor/outdoor connection with shielded wiring, con-

nect the shield ground to the earth screw (). When making a cen- tral control system connection with shielded wiring, use the terminal

block for centralized control (TB7).

When the CN41 power supply connector of an outdoor unit has been replaced with a CN40, the shield terminal (S) for centralized control (TB7) should also be connected to the earth screw ().

4.How to use the conduit mounting plate

(1)Conduit mounting plates (ø46, ø53, ø62) are being provided.

Select conduit mounting plate based on the outside diameter of con- duit to be used and mount it as shown in the figure.

(2)Fix power source wiring to control box by using buffer bushing for tensile force (PG connection or the like)

A

B

C

D

E

A B

G

knockout hole

FTo prevent external tensile force from applying to the wiring connection section of power source terminal block, use buffer bushing like PG connection or the like.

Aø 46 mounting hole

Bø 53 mounting hole

Cø 62 knockout hole

DFor the connection of conduit at bottom

Eø 62 mounting hole

FFor the connection of conduit at front

G The front of outdoor unit

b.Constant capacity unit

1.The service panel is removed by removing the six screws at the top and bottom and pulling it forward. (see figure below.)

Service panel

ENGLISH

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Image 25

Contents PUHY-YMC Contents Before installation and electric work Safety precautionsBefore getting installed Before starting the test run Before getting installed moved electrical workConfirmation of parts attached Combination with indoor unitsSelection of installation site Outdoor unit configurationModel Name Connecting pipe Elbow Shape Variable capacity unit Constant capacity unitWhen inlet air enters from right and left sides of unit Individual installationWhen there is an obstruction above the unit Space required around unitCollective installation and continu- ous installation Lifting method and weight of productBe very careful to carry product Installation Installation of unitExample of collective installation Location of anchor boltDown piping and down wiring precautions Connecting direction for refrigerant piping60/61 dB A-weighted Noise levelCountermeasure to seasonal wind Snow and seasonal windPUHY-400/500YMC PUHN-200/250YMCAreas of caution Refrigerant piping installationNever perform a pump down. This will damage the compressor + α Refrigerant piping systemMultiple line/header For variable capacity unit Precautions concerning piping connection and valve operationFigure shows valve fully open Gas side Liquid side Oil balance side75 to 750 to 50 to 57.5 / 500 to100 to 1000 to Tightening angle standard Pipe diameter mm 60 toOil balance pipe connection method Part could be damaged if not cooled sufficiently Distributor gas connection methodJoint How to install branch pipeRestrictions on the posture for attaching joints Gram belowAirtight test Airtight test and evacuationEvacuation Thermal insulation of refrigerant piping No heat insulation must be provided for electric wiresInner wall concealed Floor fireproofing PenetrationsElectrical work Variable capacity unit Control box and connecting posi- tion of wiringConstant capacity unit Plate For details, see item 11.3. Wiring transmission cablesHole Transmission booster optionalConnecting a transmission booster Wiring transmission cablesWiring examples Name, code and possible unit connectionsRemote control RC terminal block TB6 Wiring method, address settingOne remote control unit for each indoor unit Within Address Unit Remote control operation Same as aboveFor details, see wire connection example C Same group to the remote control RC terminal block TB6 Wiring LineUnit Range Setting method Main remote controllerExtended length and the length to the most remote unit Booster RP WiringCapability Number of connected indoor units that can be Wiring of main power supply and equipment capacity Test run Operation procedureChecking before getting test run Test run methodAbnormality How to cope with test run abnormalityPower on 6603 Transmission error Transmission route Busy ErrorDisplay at LED lighting blinking Remarks Flag Relay output Flag 8 always lightsCoping with remote controller abnormality Following phenomena do not represent abnormality emergency NMK Nkok NknkNkqk NKPK#$%&*+#$%&*+#,%&- ./0123145&6789#$%&=?@. !# Sknk #$% +,-.Ü SkokUknk TK=Ukok Ukpk Ukqk Vkok Nmknk = NMK=$%&*+,-./01 NMKOK=#$%&*+QMã NMKPK=L Ãã ! k·ãLâÖJÅã NMKQK=#$%&#*#%+, -. !*# NMKRK= NMKSK= #$%& *+& 012345678 .#$%&*+,-./0 1$%#234 NNKNK= NNK=NNKOK= Rsrv NNKPK=#$% +,-./012 NRO #$% +,-./0/12`kQN =EqRF= !# $%&*+ Vwt NNKQK=NOKOK= NOKNK=NOKPK= EptNF EibaF NOKQK= `ççäáåÖ EÉ~íáåÖ NokrkNMK Nknk Nkqk #$%&!*+ Sknk Skok TK= Ukok Ukpk Ukqk Vkok NMK= NMKOK= #$%&*+QMã NMKPK=L NMKQK= #$%&#*#%+, -. !*# NMKRK= NMKSK= #$%& *+& 012345678 .#$%&*+,-./0 1$%#234 NNK= NNKOK= NNKPK= #$% +,-./012 NRO #$#%&* +,-./0123456 =EqRF= !# $%&*+ NNKQK= NOK= NOKPK= EptNF EibaF NOKQK= Nokrk WT02922X02