35
Heat Recovery
8. Operating Range
Inl
et
w
at
er
temper
atur
e (˚C)
Indoor temperature (˚C, DB)
-10
-5
0
15
10
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
