• The minimum operation ratio should be considered during the design stage.
• If a system has a mix of unit types or capacity, the lowest extended connection ratio curve must be utilized.
• In case that a designed Minimum Operation Ratio is less than 5% or more than 30%, the Allowable Extended CR
must be considered as the value at 5% and 30%, respectively.
•
*)
If one of following indoor unit types is included in a system, the CR cannot be extended beyond 130%.
• Samsung is not responsible for any issue, including abnormal noise that arises during heating
operation due solely to the operation rate being lower than the designated combination ratio shown in
Fig. 2. Please contact your local Samsung representative for further details if the project requires you
to design the project with a connection ratio greater than 130%.
NOTE
Combination Ratio (Connection Ratio)
Type of indoor unit
Limited by CR 130%
1Way Cassette / 4Way Cassette (600 x 600)
9kBtu/h or below
360 Cassette / Slim Duct (LSP duct)
12kBtu/h or below
4Way Cassette
18kBtu/h or below
Floor Standing (Exposed or Concealed)
18kBtu/h only
Ceiling Suspended
24kBtu/h only
Hydro unit (HE/HT)
All capacities
Design Procedure & Combination Ratio
