Mitsubishi Electronics PUHY-YMC instruction

length	•	Length of wire to the most remote unit via the outdoor unit : L1+L2+L3+L4+L5+L6+L7+L9,
	•
		L1+L2+L3+L4+L5+L6+L8+L9 = 500 m (1.25 mm2)
Permissible	•	Length of wire to the most remote unit via the indoor system : L1+L2+L3+L4, L5+L6+L7, L5+L6+L8, L7+L8 = 200 m (1.25 mm2)
Permissible	•	extended length and the length to the most remote unit.
	•	Remote control wire length : r1, r2, r3, r4 = 10 m (0.5 to 0.75 mm2)
		If the length exceeds 10 m, use 1.25 mm2 wire and calculate the length of that portion (L8) as within the total

Group 1

Group 3

Group 5

OS

OC

CN40

IC

IC

IC

IC

(54)

(51)

(01)

(04)

(05)

(06)

TB3

TB3

TB5

TB13

TB5

TB13

TB5

TB13

TB5

TB13

M1 M2

S

M1M2

M1M2 S

M1M2 S

1

2

3

M1M2 S

1

2

3

M1M2 S

1

2

3

M1M2 S

1

2

3

TB7

Shielded cable

TB6

TB6

TB6

(101)

(105)

(155)

RC

RC

RC

OS

OC

IC

IC

IC

items

(53)

(52)

(02)

(03)

(07)

Prohibited

TB3

TB3

TB5

TB13

TB5

TB13

TB5

TB13

M1 M2

S

M1 M2

M1M2 S

M1M2 S

1

2

3

M1M2 S

1

2

3

M1M2 S

1

2

3

TB7

TB6

(103)

RC

• Connect the S terminal of the centralized control terminal block (TB7) of one variable capacity unit only to the ground of the electrical equipment panel.

•The transmission line terminal blocks (TB5) of indoor units (IC) connected to different cooling systems should not be connected together.

Note:

1.If there is one or more 200 or higher indoor units within the same cooling system, and the number of indoor units exceeds 16 units, a transmission booster is necessary. (When a “PAR-F25MA Ver. F or subsequent version of remote control is used)

2.If there is not even one 200 or higher indoor unit within the same cooling system, and the number of indoor units exceeds 20 units, a transmission booster is necessary. (When a “PAR-F25MA Ver. F or subsequent version of remote control is used)

* For details, see wire connection example C.

ENGLISH

31

Image 31

Mitsubishi Electronics PUHY-YMC installation manual Extended length and the length to the most remote unit

Contents

PUHY-YMC Contents Before installation and electric work Safety precautionsBefore getting installed Before starting the test run Before getting installed moved electrical work Confirmation of parts attached Combination with indoor units Variable capacity unit Constant capacity unit Outdoor unit configurationSelection of installation site Model Name Connecting pipe Elbow Shape Space required around unit Individual installationWhen inlet air enters from right and left sides of unit When there is an obstruction above the unit Collective installation and continu- ous installation Lifting method and weight of productBe very careful to carry product Location of anchor bolt Installation of unitInstallation Example of collective installation Noise level Connecting direction for refrigerant pipingDown piping and down wiring precautions 60/61 dB A-weighted PUHN-200/250YMC Snow and seasonal windCountermeasure to seasonal wind PUHY-400/500YMC Areas of caution Refrigerant piping installationNever perform a pump down. This will damage the compressor + α Refrigerant piping system Multiple line/header For variable capacity unit Precautions concerning piping connection and valve operation Figure shows valve fully open Gas side Liquid side Oil balance side 60 to 50 to 57.5 / 500 to75 to 750 to 100 to 1000 to Tightening angle standard Pipe diameter mm Oil balance pipe connection method Part could be damaged if not cooled sufficiently Distributor gas connection method Gram below How to install branch pipeJoint Restrictions on the posture for attaching joints Airtight test Airtight test and evacuationEvacuation Thermal insulation of refrigerant piping No heat insulation must be provided for electric wires Inner wall concealed Floor fireproofing Penetrations Electrical work Variable capacity unit Control box and connecting posi- tion of wiringConstant capacity unit Transmission booster optional For details, see item 11.3. Wiring transmission cablesPlate Hole Name, code and possible unit connections Wiring transmission cablesConnecting a transmission booster Wiring examples Within Address Unit Remote control operation Same as above Wiring method, address settingRemote control RC terminal block TB6 One remote control unit for each indoor unit For details, see wire connection example C Main remote controller Wiring LineSame group to the remote control RC terminal block TB6 Unit Range Setting method Extended 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 method Operation procedureTest run Checking before getting test run Abnormality How to cope with test run abnormality Flag 8 always lights 6603 Transmission error Transmission route Busy ErrorPower on Display at LED lighting blinking Remarks Flag Relay output Coping with remote controller abnormality Following phenomena do not represent abnormality emergency NMK Nkok Nknk Nkqk NKPK#$%&*+ #$%&*+#,%&- ./0123145&6789#$%&=?@. !# Sknk #$% +,-.Ü Skok Uknk 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= !# $%&*+ Vwt NNKQK= NOKOK= NOKNK= NOKPK= EptNF EibaF NOKQK= `ççäáåÖ EÉ~íáåÖ Nokrk NMK Nknk Nkqk #$%&!*+ 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