Mitsubishi Electronics PUHY-YMC installation manual Gas side Liquid side Oil balance side

Page 16

ENGLISH

<For constant capacity unit>

Connect piping and operate valves exactly as described in the figure below.

Replace the solid packing.

• Gas side connecting piping is already assembled when the equipment is shipped. (See figure

O

S

on right.)

 

3

1 When brazing to connecting pipe with flange, remove the connecting pipe with flange from

 

 

 

the ball valve, and braze at the outside of the unit.

 

 

2During the time when removing the connecting pipe with flange, remove the seal attached on the back side of this sheet and paste it onto the flange surface of the ball valve to prevent the entry of dust into the valve.

3 The refrigerant circuit is closed with a round, close-packed packing at the shipment to pre-

1

Hollow packing

vent gas leak between flanges. As no operation can be done under this state, be sure re-

 

place the packing with the hollow packing attached at the piping connection.

4At the mounting of the hollow packing, wipe off dust attached on the flange sheet surface and the packing. Coat refrigerating machine oil onto both surfaces of the packing.

After evacuation and refrigerant charge, ensure that the handle is fully open. If operating with the valve closed, abnormal pressure will be imparted to the high- or low-pressure side of the refrigerant circuit, or a shortage of oil in the compressor may occur due to lack of oil flow between units, giving damage to the compressor, four-way valve, etc.

For evacuating, be sure to provide an oil balance pipe between the variable capacity and constant capacity units.

Determine the amount of additional refrigerant charge by using the formula, and charge refrigerant additionally through the service port after completing piping connection work.

After completing work, shut the service port and cap tightly so that gas leaking does not occur.

Ball valve

Ball valve

Ball valve

The unit is set vertically between

(Gas side)

(Liquid side)

(Oil balance side)

 

 

 

 

 

 

the compressor and control box.

 

E

 

E

 

E

 

 

 

 

 

A

 

 

O

S

 

 

 

Fastening plate

 

 

 

 

 

 

 

O

S

O

S

 

 

 

 

 

 

C

D

G

ø 28.6

MP35K

ø 12. 7

To distributor (liquid)

F

B

ø 12.7

H

To variable capacity unit

To distributor (gas) inside variable capacity unit

(Figure shows valve fully open.)

Warning:

Be sure to remove the connecting pipe from the ball valve, and braze it outside the unit.

- If brazed while mounted, the ball valve is heated and could result in cracking or gas leaks. The wiring inside the unit could also be burned.

16

Image 16
Contents PUHY-YMC Contents Before installation and electric work Safety precautionsBefore 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 unitCollective installation and continu- ous installation Lifting method and weight of productBe 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-200/250YMCAreas of caution Refrigerant piping installationNever 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 Airtight test and evacuationEvacuation No heat insulation must be provided for electric wires Thermal insulation of refrigerant pipingPenetrations Inner wall concealed Floor fireproofingElectrical work Variable capacity unit Control box and connecting posi- tion of wiringConstant 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 Booster RP WiringCapability 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