McQuay MDS Multi System
McQuay MDS Multi System
McQuay MDS Multi System
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Design & installation Guide For <strong>McQuay</strong> <strong>MDS</strong> <strong>Multi</strong> <strong>System</strong>Model <strong>MDS</strong>150BR S TREDYELLOWBLUEN380V/3N~/50HzFUT 71S DB3A 81R NLAir suction temperature sensor TH12Over cooling circuit outlet temperature sensorTH11After over cooling circuit temperature sensor TH10Before over cooling circuit temperature sensor TH9Ambient temperature sensor TH8Air discharge temperaturesensor of the digital compressor TH11LPT2REDWHITEBLACK3 1HPT2 3REDWHITEBLACKKM1KM2KM3KM4KM5TRBLACKWHITELOW-IV1+V1-V2+V2-HI-1TH7 TH6 TH5 TH3TH12 TH11 TH10TH9<strong>MDS</strong>-MTH8TH4TH2TH1LOW-UHI-UOL1REDYELLOWBLUET2T1 T3M ~OL2REDYELLOWT1 T2M~BLUET3OL3REDYELLOWT1T2M~BLUET3OL421 22REDBLUEM~23YELLOWOL524 25 26BROWNWHITEBLACKL1OL2 12OL1 13OL3 14HP15 OL4 16 OL5 17J1FIX3-OLFIX2-OLFIX1-OL <strong>MDS</strong>-PDIG-OLLPHPNLJ18PMWSV2SV1FANLS1FANHS24WVAinBpc Apc BinS3FIX2FIX130313233DIGConnecting the indoor unitConnecting central control systemEXV1EXV412 481011Constant-speedcompressor 1Constant-speedcompressor 2Digital compressorFan motorKM43KM55EXV4PMWKM5 KM4 KM2 KM1 KM3Description of components and parts :Symbol Description Symbol DescriptionDB3A Phase-loss/reverse protector FU FuseKM ContactorEXV4 Over cooling electronic expansion valve 4HP High-pressure switch PMW Solenoid valveLPT Low -pressure sensorOL Overload protectorHPT High-pressure sensorTR TransformerOverload protection settings :OL1 OL2 OL3 OL4 OL514.0 14.0 14.0 3.3A 1.8ADIP switch settings :S1.1 S1.2 S2.2 S2.3 S3.1 S3.2 S3.3 S3.4OFF ON OFF ON OFF OFF ON ONNotes:1: -----------Field wiring2: --------------Factory wiring3: S1.3~S1.8 set the number of indoor units. S2.1 sets theunit as a master/slave. For details of S2.4~S2.8.Model <strong>MDS</strong>150BR380V/3N~/50HzRSTNFULT 71S 81LPT HPTR N1 2 3 1 2 3DB3ATRLOW-I HI-1 TH7 TH5 TH12 TH10 TH8 TH2 LOW-U HI-UTH6 TH3 TH11 TH9 TH4 TH1V1+BLACKV1-KM1KM2KM3KM4KM5V2+<strong>MDS</strong>-MWHITEV2-30OL1OL2OL3OL4OL531 Connecting the indoor unitFIX3-OLOL2 12FIX2-OL32181920OL1 1333 Connecting central control systemFIX1-OL <strong>MDS</strong>-P21 22 23 24 25 26OL3 14DIG-OLLPHP OL4 OL5S1 S2 S3L1 15 16 17HPT2T2T2T1 T3T1 T3T1 T3MNM MM~EXV1 EXV4~ ~~LJ1 J18Shaft heater Shaft heater Shaft heater12 4 7 8 10 11REDREDYELLOWYELLOWBLUEBLUEREDYELLOWBLUEREDYELLOWBLUEREDBLUEYELLOWBROWNWHITEBLACKPMWSV2SV1Air suction temperature sensor TH12FANLFANHOver cooling circuit outlet temperature sensorTH11After over cooling circuit temperature sensor TH10Before over cooling circuit temperature sensor TH9Ambient temperature sensor TH84WVApc Bin AinBpcFIX2FIX1Coil inlet temperature sensor TH2Air discharge temperature sensor of the digital compressor TH1REDWHITEBLACKDIGREDWHITEBLACKKM4KM5EXV1EXV4Constant-speedcompressor 1Constant-speedcompressor 2Digital compressorFan motorPMW3 5KM5 KM4 4WV KM2 KM1 KM3Description of components and parts :Symbol Description Symbol DescriptionDB3A Phase-loss/reverse protector FU Fuse4WV Four-way valveEXV1 <strong>System</strong> electronic expansion valve 1KM ContactorEXV4 Over cooling electronic expansion valve 4HP High-pressure switch PMW Solenoid valveLPT Low -pressure sensor OL Overload protectorHPT High-pressure sensor TR TransformerOverload protection settings :OL1 OL2 OL3 OL4 OL514.0 14.0 14.0 3.3A 1.8ADIP switch settings :S1.1 S1.2 S2.2 S2.3 S3.1 S3.2 S3.3 S3.4OFF OFF OFF ON OFF OFF ON ONNotes:1: -----------Field wiring2: --------------Factory wiring3: S1.3~S1.8 set the number of indoor units. S2.1 sets theunit as a master/slave. For details of S2.4~S2.8.-44-
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