Kaysun KEM-HT-65 DRS5, Инструкция для владельца и по установке

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Error Recommendation Error Recommendation
Fig.8-20 Design of the store tank
8.5.4 Minimum chilled water flow
The minimum chilled water flow is shown in the table 8-7
If the system flow is less than the minimum unit flow rate, the
evaporator flow can be recirculated, as shown in the diagram.
For minimum chilled water flow rate
UNIT Recirculation
Fig. 8-21-1
8.5.5 Maximum chilled water flow
The maximum chilled water flow is limited by the permitted
pressure drop in the evaporator. It is provided in the table 8-7
If the system flow is more than the maximum unit flow rate,
bypass the evaporator as shown in the diagram to obtain a
lower evaporator flow rate.
UNIT Recirculation
Fig. 8-21-2
8.5.6 Minimum and Maximum water flow
Table 8-7
Item
Model
Waterflow rate (m 3 /h)
Minimum Maximum
65KW 3.0 14.0
110KW 5.0 26.0
8.5.7 Selection and installation of the pump
1) Select the pump
The unit must be equipped with variable frequency pump.
a) Select the water-flow of the pump
The rated water-flow must no less than the unit rated water-flow;
in terms of multi-connect the units, that water-flow must no less
than total units’ rated water-flow. The unit must be equipped
with variable frequency pump.
b) Select the left of the pump.
H=h1+h2+h3+h4
H: The lift of the pump.
h1: Main unit water resistance.
h2: Pump water resistance.
h3: Water resistance of the longest water-loop distance,
includes:
pipe resistance, different valve’s resistance, flexible pipe
resistance, pipe elbow and three-way resistance, two-way
resistance or three-way resistance, as well as filter resistance.
H4: the longest terminal resistance.
2) Installation the pump
a) The pump should be installed at the water inlet pipe, both of
which sides must mount the soft connectors for vibration-proof.
b) The backup pump for the system (recommended) .
c) Units must with a main unit controls (Please see Fig. 8-18 for
the controls wiring diagram) .
8.5.8 Water quality
1) Water quality control
When industrial water is used as chilled water, little furring may
occur; however, well water or river water, used as chilled water,
may cause much sediment, such as furring, sand, and so on.
Therefore, well water or river water must be filtered and
softened in softening water equipment before flowing into
chilled water system. If sand and clay settle in the evaporator,
circulation of chilled water may be blocked, and thus leading
to freezing accidents; if hardness of chilled water is too high,
furring may occur easily, and the devices may be corroded.
Therefore, the quality of chilled water should be analyzed before
being used, such as PH value, conductivity, concentration of
chloride ion, concentration of sulfide ion, and so on.