Specifications

60
MAXIMUM PIPE LENGTH AND MAXIMUM NUMBER OF BENDS
When the pipe length becomes too long, both the capacity and reliability drop. As the number of bends in-
creases, system piping resistance to the refrigerant flow increases, lowering the cooling capacity. As a result of
this, the compressor may become defective. Always choose the shortest path and follow the recommendations
as tabulated below :
* 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 the
number 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 as
possible.
1) MMSD / M4MSD
MODEL
DATA 1010A - 1515A 1020A - 1520A 2020A
Max. Length (L) m 12 / 12 12 / 15 15 / 15
Max. elevation (H) m 5 / 5 5 / 8 8 / 8
Max. No. of Bends 10 / 10 10 / 10 10 / 10
MMSD / M4MSD
MODEL MMST / M4MST
DATA 101010A - 151515A/AR 101020A 101025A - 151525A
Max. Length (L) m 12 / 12 / 12 12 / 12 / 15 12 / 12 / 15
Max. elevation (H) m 5 / 5 / 5 5 / 5 / 8 5 / 5 / 8
Max. No. of Bends 10 / 10 / 10 10 / 10 / 10 10 / 10 / 10
MMST
Model Circuitry
Max.
Individual
*Max. Total
*Max. Length
Difference
Max.
Elevation
*Max. Height
Difference
*Max.
Number of
L1 or L2 (m) L1 + L2 (m) L1 – L2 (m) H (m) H (m) bends
MMSH8K8A COMP. A 12 - - 5 - 10
COMP. B 12 - - 5 - 10
MMSH8K66A COMP. A 12 / 12 20 8 5 7 10
COMP. B 12 - - 5 - 10
MMSH66K66A COMP. A 12 / 12 20 8 5 7 10
COMP. B 12 / 12 20 8 5 7 10
MMSH66K555A COMP. A 12 / 12 20 8 5 7 10
COMP. B 12 / 12 20 8 5 7 10