Mitsubishi Electronics PUHY-YMC Snow and seasonal wind, Countermeasure to seasonal wind

Page 11

9. Caution for snow and seasonal wind

In cold and/or snowy areas, sufficient countermeasures to wind and snow damages should be taken for operating unit in normal and good condi- tion in winter time. Even in the other areas, full consideration is required for installation of unit in order to prevent abnormal operations caused by seasonal wind or snow. When rain and snow directly fall on unit in the case of air-conditioning operations in 10 or less degrees centi- grade outdoor air, mount inlet and outlet ducts on unit for assuring stable operations.

9.1. Snow and seasonal wind

■Prevention of wind and snow damages in cold or snowy areas: Refer to the figure of snow hood shown below:

•Snow hood

Note:

1.Height of frame base for snow damage prevention (H) shall be twice as high as expected snowfall. Width of frame base shall not exceed that of the unit. The frame base shall be made of angle steel, etc., and designed so that snow and wind slip through the structure. (If frame base is too wide, snow will be accumu- lated on it.)

2.Install unit so that seasonal wind will not directly lash against openings of inlet and outlet ducts.

3.Build frame base at customer referring to this figure. Material : Galvanized steel plate 1.2T

Painting: Overall painting with polyester powder

Color : Munsell 5Y8/1 (same as that of unit)

4.When the unit is used in a cold region and the heating operation is continuously performed for a long time when the outside air temperature is below freezing, install a heater to the unit base or take other appropriate measures to prevent water from freez- ing on the base.

<PUHY-400/500YMC>

1093

A	903

1888

<PUHN-200/250YMC>

1093

903

A

888

ENGLISH

1145

500

B

(840)

B

500

H (670) 821

(1990)

1145

500

B

(840)

B

500

H (670)821

(990)

AOutlet

BInlet

9.2. Countermeasure to seasonal wind

Referring to the figure shown below, take appropriate measures which will suit the actual situation of the place for installation.

AA

ASeasonal wind

11

Image 11

Contents PUHY-YMC Contents Before getting installed Safety precautionsBefore installation and electric work Before starting the test run Before getting installed moved electrical workConfirmation of parts attached Combination with indoor unitsVariable capacity unit Constant capacity unit Outdoor unit configurationSelection of installation site Model Name Connecting pipe Elbow ShapeSpace required around unit Individual installationWhen inlet air enters from right and left sides of unit When there is an obstruction above the unitBe very careful to carry product Lifting method and weight of productCollective installation and continu- ous installation Location of anchor bolt Installation of unitInstallation Example of collective installationNoise level Connecting direction for refrigerant pipingDown piping and down wiring precautions 60/61 dB A-weightedPUHN-200/250YMC Snow and seasonal windCountermeasure to seasonal wind PUHY-400/500YMCNever perform a pump down. This will damage the compressor Refrigerant piping installationAreas of caution + 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 side60 to 50 to 57.5 / 500 to75 to 750 to 100 to 1000 to Tightening angle standard Pipe diameter mmOil balance pipe connection method Part could be damaged if not cooled sufficiently Distributor gas connection methodGram below How to install branch pipeJoint Restrictions on the posture for attaching jointsEvacuation Airtight test and evacuationAirtight test Thermal insulation of refrigerant piping No heat insulation must be provided for electric wiresInner wall concealed Floor fireproofing PenetrationsElectrical work Constant capacity unit Control box and connecting posi- tion of wiringVariable capacity unit Transmission booster optional For details, see item 11.3. Wiring transmission cablesPlate HoleName, code and possible unit connections Wiring transmission cablesConnecting a transmission booster Wiring examplesWithin Address Unit Remote control operation Same as above Wiring method, address settingRemote control RC terminal block TB6 One remote control unit for each indoor unitFor details, see wire connection example C Main remote controller Wiring LineSame group to the remote control RC terminal block TB6 Unit Range Setting methodExtended length and the length to the most remote unit Capability Number of connected indoor units that can be WiringBooster RP Wiring of main power supply and equipment capacity Test run method Operation procedureTest run Checking before getting test runAbnormality How to cope with test run abnormalityFlag 8 always lights 6603 Transmission error Transmission route Busy ErrorPower on Display at LED lighting blinking Remarks Flag Relay outputCoping 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