Samsung VRF DVM S Water - Heat Recovery and Water Flow Rate Specs

35
Heat Recovery
8. Operating Range
Inlet water temperature (˚C)
Indoor temperature (˚C, DB)
-10
-5
0
1510 20 25 30 32 35
10
20
30
35
40
50
45
Warming up
operation
range
Anti-freeze A
Anti-freeze B
Operation Range
Cooling
operation
range
Heating
operation
range
Operation Range
Continuous
Operation Range
Antifreeze A :
freezing point -8℃
Antireeze B :
freezing point -15℃
NOTE
• In the range except for the continuous operation range, the protection control can be active depending on the
heat source flow rate. (It is not a failure but a way of cycle protection against hot or cold water.)
• For use in the antifreeze condition, the antifreeze concentration must be rigidly managed.
Design standard
Type Circulating water Operation
Intel water temperature (°C)
Standard Main usage Operation limit
Heat source water Water loop
Cooling 30 20~35
10~45
Heating 20 20~35
Ground heat source
1)
Ground water
Cooling 15 15~35
Cooling: 10~45
Heating: -5~45
(Heating: -5~45)
2)
Heating 10 5~25
Ground loop
Cooling 25 15~35
Heating 5 5~25
1) Anti-freeze must be used when temperature of water inlet for heating is below 10°C or ground heat is used.
Maintain approprate concentation level of anti-freeze according to temperature of water inlet.
2) Strict management of anti-freeze concentration level is required. Consult Samsung before application.
Anti-freeze standard
Type of anti-freeze (Based on 15°C) Concentration [% Wt.] Freezing temperature [°C] Density [kg/m
3
]
Ethylene glycol
10 -3.2 1014.87
20 -7.8 1031.39
30 -14.1 1047.07
40 -22.3 1061.65
Propylene glycol
10 -3.3 1009.75
20 -7.1 1020.91
30 -12.7 1030.51
40 -21.1 1038.65