Daikin EWAP 060 Instalación Funcionamiento Mantenimiento página 26

26
General start-up
When ethylene glycol is added in the chilled water circuit the following
adjustment factors have to be taken in account.
Table 13 - Ethylene glycol adjustment factors
LWTE PCT EG
(%)
12 30
5 30
4 10
0 20
-4 27
-8 33
-12 37
Ethylene Glycol recommended concentration
40%
35%
30%
25%
20%
15%
10%
5%
0%
-12 °C -10 °C
Propylene Glycol recommended concentration
45%
40%
35%
30%
25%
20%
15%
10%
5%
0%
-10 °C -8 °C
A relief valve is located at pump
suction limiting water circuit
pressure at 3 bar.
Nitrogen pressure inside of the
expansion tank must be equal to the
geometric height of the installation
+ 0.5 bar (in order to avoid air
entering in the water circuit)
Adjustment factors
Flow rate Pressure drop
1.11 1.20
1.11 1.24
1.02 1.08
1.05 1.19
1.08 1.29
1.10 1.46
1.12 1.62
-8 °C -6 °C -4 °C -2 °C 0 °C
Lowest water temperature
-6 °C -4 °C -2 °C 0 °C
Lowest water temperature
Expansion tank must be inflated
with nitrogen. Pressure must be
checked yearly.
For a good pump operation, pump
suction pressure must be between
0.5 and 2.5 bar when pump runs.
Power Input Cooling Cap.
1.005 0.98
1.005 0.98
- -
- -
- -
- -
- -
2 °C 4 °C
2 °C 4 °C
CG-SVX04C-E4