Daikin EWAP/EWYP 060-260, Установка, эксплуатация и обслуживание

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26 CG-SVX04C-E4
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 Adjustment factors
(%) Flow rate Pressure drop Power Input Cooling Cap.
12 30 1.11 1.20 1.005 0.98
5 30 1.11 1.24 1.005 0.98
4 10 1.02 1.08 - -
0 20 1.05 1.19 - -
-4 27 1.08 1.29 - -
-8 33 1.10 1.46 - -
-12 37 1.12 1.62 - -
0%
5%
10%
15%
20%
25%
30%
35%
40%
-12 °C -10 °C -8 °C -6 °C -4 °C -2 °C 0 °C 2 °C 4 °C
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
-10 °C -8 °C -6 °C -4 °C -2 °C 0 °C 2 °C 4 °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)
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.
Ethylene Glycol recommended concentration
Propylene Glycol recommended concentration
Lowest water temperature
Lowest water temperature