Multi-Split Systems - McQuay

Maximum Pipe Length And Maximum Number Of BendsWhen the pipe length becomes too long, both the capacity and reliability drop. As the number of bends increases,system piping resistance to the refrigerant flow increases, lowering the cooling capacity. As a result ofthis, the compressor may become defective. Always choose the shortest path and follow the recommendationsas tabulated below :MODELMMSD / M4MSDDATA 1010A - 1515A 1020A - 1520A 2020AMax. Length (L) m 12 / 12 12 / 15 15 / 15Max. elevation (H) m 5 / 5 5 / 8 8 / 8Max. No. of Bends 10 / 10 10 / 10 10 / 10MODEL MMST / M4MSTMMSTDATA 101010A - 151515A/AR 101020A 101025A - 151525AMax. Length (L) m 12 / 12 / 12 12 / 12 / 15 12 / 12 / 15Max. elevation (H) m 5 / 5 / 5 5 / 5 / 8 5 / 5 / 8Max. No. of Bends 10 / 10 / 10 10 / 10 / 10 10 / 10 / 10ModelCircuitryMax.Individual*Max. Total*Max. LengthDifferenceMax.Elevation*Max. HeightDifference*Max.Number ofL1 or L2 (m) L1 + L2 (m) L1 – L2 (m) H (m) H (m) bendsMMSH8K8A COMP. A 12 - - 5 - 10COMP. B 12 - - 5 - 10MMSH8K66A COMP. A 12 / 12 20 8 5 7 10COMP. B 12 - - 5 - 10MMSH66K66A COMP. A 12 / 12 20 8 5 7 10COMP. B 12 / 12 20 8 5 7 10MMSH66K555A COMP. A 12 / 12 20 8 5 7 10COMP. B 12 / 12 20 8 5 7 10* For units sharing the same compressor only.CAUTION :Our guarantee on the performance of our air-conditioners will be revoked if the height, length and/or thenumber of bends of the refrigerant piping system installed is beyond our recommended limit.Bendings must be carefully made so as not to crush the pipe. Use a pipe bender to bend a pipe as far aspossible.1) MMSD / M4MSD25