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Design Procedure & Combination Ratio
Combination Ratio (Connection Ratio)
Satisfying cooling & heating comfort
The Maximum Capacity of outdoor unit at design condition calculated from Samsung capacity data table or design
tool (DVM Pro) should always be the same or greater than System Peak Load (Block Load) defined in table 1.
Room A
Time
Music Room
09:00
8.4
12:00
9.2
14:00
10.0
16:00
11.0
18:00
9.4
Zone Peak Loads (
): To satisfy the demand for each room any time
Sum of Zone peak Loads = 65.4kW (11.0 + 10.6 + 10.8 + 10.8 + 11.4 + 10.8)
Block load (
): Total peak load at a given time of day.
- Sum of Zone Peak Loads at 14:00 = 61.0kW
• When a system combination ratio is over 130%, a max system capacity is the same as the published
capacity in TDB capacity table at the combination ratio of 130%
NOTE
Cooling Operation Only
When only cooling operation is used, CR is allowed up to 180% if the Max Capacity of outdoor unit is greater than
System Peak Load (Block load) as shown table 2.
Outdoor unit
Indoor unit
Operation Condition
Allowable CR
• Table 2 shows a standard for allowable CR of cooling only model. Samsung Electronics is not
responsible for any problem caused by using a heating mode at the site with a system designed by
NOTE
table 2. If heating operation is required, extended CR design must follow section "Allowable CR limit to
avoid abnormal sound level risks in heating operation."
Room B
Room C
Class room
Class room
8.0
8.4
8.8
10.8
9.6
9.6
10.6
8.8
9.0
8.8
Table 1. Example of System Peak loads
Table 2. Allowable CR in only cooling operation
Room D
Room E
Class room
Class room
8.0
8.4
8.6
10.8
9.6
11.4
10.8
9.6
9.0
9.0
All capacities of H/P & H/R model
All indoor unit types
Cooling mode only
180%
Room F
Total
Class room
8.6
49.8
9.8
58.0
10.8
61.0
9.6
60.4
8.4
53.6
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