Mitsubishi Electronics PUHY-YMC installation manual Electrical work

Page 24

ENGLISH

11. Electrical work

11.1. Caution

1Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations and guidance of each electric power company.

Warning:

Be sure to have authorized electric engineers do electric work using special circuits in accordance with regulations and this installation manual. If power supply circuit has a lack of capacity or electric work deficiency, if may cause an electric shock or fire.

2Install the outdoor unit transmission line away from the power source wiring so that it is not affected by electric noise from the power source. (Do not run it through the same conduit.)

3Be sure to provide designated grounding work to outdoor unit.

Caution:

Be sure to put outdoor unit to earth. Do not connect earth line to any gas pipe, water pipe, lightning rod or telephone earth line. If earth is incomplete, it may cause an electric shock.

4Give some allowance to wiring for electrical part box of indoor and outdoor units, because the box is sometimes removed at the time of service work.

5Never connect the main power source to terminal block of transmission line. If connected, electrical parts will be burnt out.

6Use 2-core shield cable for transmission line. ( mark in the figure below) If transmission lines of different systems are wired with the same multiplecore cable, the resultant poor transmitting and receiving will cause erroneous operations. (⋅ mark in the figure below)

7Only the transmission line specified should be connected to the terminal block for outdoor unit transmission.

(Transmission line to be connected with indoor unit : Terminal block TB3 for transmission line, Other : Terminal block TB7 for centralized control) Erroneous connection does not allow the system to operate.

8In case to connect with the upper class controller or to conduct group operation in different refrigerant systems, the control line for transmission is required between the outdoor units each other.

Connect this control line between the terminal blocks for centralized control. (2-wire line with no polarity)

When conducting group operation in different refrigerant systems without connecting to the upper class controller, replace the insertion of the short circuit connector from CN41 of one outdoor unit to CN40.

9Group is set by operating the remote controller.

0Caution! If the electrical wiring connections (L1, L2, L3, N ) are made incorrectly, damage to the unit could result.

 

A

 

C

TB3

 

TB7

B

 

 

D

TB3

 

TB7

B

 

TB3: Transmission line terminal board, TB7: Central control line terminal board

AOutdoor unit

B2-core cable

CIndoor unit

DRemote controller

EMulti-core cable

 

A

 

C

TB3

 

TB7

E

 

 

D

TB3

 

TB7

 

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Contents PUHY-YMC Contents Safety precautions Before installation and electric workBefore getting installed Before getting installed moved electrical work Before starting the test runCombination with indoor units Confirmation of parts attachedOutdoor unit configuration Selection of installation siteModel Name Connecting pipe Elbow Shape Variable capacity unit Constant capacity unitIndividual installation When inlet air enters from right and left sides of unitWhen there is an obstruction above the unit Space required around unitLifting method and weight of product Collective installation and continu- ous installationBe very careful to carry product Installation of unit InstallationExample of collective installation Location of anchor boltConnecting direction for refrigerant piping Down piping and down wiring precautions60/61 dB A-weighted Noise levelSnow and seasonal wind Countermeasure to seasonal windPUHY-400/500YMC PUHN-200/250YMCRefrigerant piping installation Areas of cautionNever perform a pump down. This will damage the compressor Refrigerant piping system + αMultiple line/header Precautions concerning piping connection and valve operation For variable capacity unitGas side Liquid side Oil balance side Figure shows valve fully open50 to 57.5 / 500 to 75 to 750 to100 to 1000 to Tightening angle standard Pipe diameter mm 60 toOil balance pipe connection method Distributor gas connection method Part could be damaged if not cooled sufficientlyHow to install branch pipe JointRestrictions on the posture for attaching joints Gram belowAirtight test and evacuation Airtight testEvacuation No heat insulation must be provided for electric wires Thermal insulation of refrigerant pipingPenetrations Inner wall concealed Floor fireproofingElectrical work Control box and connecting posi- tion of wiring Variable capacity unitConstant capacity unit For details, see item 11.3. Wiring transmission cables PlateHole Transmission booster optionalWiring transmission cables Connecting a transmission boosterWiring examples Name, code and possible unit connectionsWiring method, address setting Remote control RC terminal block TB6One remote control unit for each indoor unit Within Address Unit Remote control operation Same as aboveFor details, see wire connection example C Wiring Line Same group to the remote control RC terminal block TB6Unit Range Setting method Main remote controllerExtended length and the length to the most remote unit Wiring Booster RPCapability Number of connected indoor units that can be Wiring of main power supply and equipment capacity Operation procedure Test runChecking before getting test run Test run methodHow to cope with test run abnormality Abnormality6603 Transmission error Transmission route Busy Error Power onDisplay at LED lighting blinking Remarks Flag Relay output Flag 8 always lightsCoping with remote controller abnormality Following phenomena do not represent abnormality emergency NMK Nknk NkokNKPK#$%&*+ Nkqk#$%&*+#,%&- ./0123145&6789#$%&=?@. !# Sknk Skok #$% +,-.ÜTK= UknkUkok Ukpk Ukqk Vkok NMK= Nmknk =NMKOK= $%&*+,-./01#$%&*+QMã NMKPK=L NMKQK= Ãã ! k·ãLâÖJÅã#$%&#*#%+, -. !*# NMKRK= NMKSK= #$%& *+& 012345678 .#$%&*+,-./0 1$%#234 NNK= NNKNK=NNKOK= NNKPK= Rsrv#$% +,-./012 NRO #$% +,-./0/12`kQN =EqRF= !# $%&*+ NNKQK= VwtNOKNK= NOKOK=NOKPK= EptNF EibaF NOKQK= Nokrk `ççäáåÖ EÉ~íáåÖNMK Nknk Nkqk #$%&!*+ 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
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