WARNING
m. The outdoor chilled water pipelines should be wrapped
with an auxiliary heating belt for heat preservation, and the
material of the auxiliary heat belt should be PE, EDPM, etc.,
with thickness of 20mm, to prevent the pipelines from
freezing and thus cracking under low temperature. The power
supply of the heating belt should be equipped with an
independent fuse.
n. When the ambient temperature is lower than 2
ć
, and the
unit will be not used for a long time, water inside the unit
should be drained. If the unit is not drained in winter, its
power supply should not be cut off, and the fan coils in the
water system must be provided with three-way valves, to
ensure smooth circulation of the water system when the
anti-freezing pump is started up in winter.
●
For the water pipeline network including filters and heat
exchangers, dreg or dirt may seriously damages the heat
exchangers and water pipes.
●
The installation persons or the users must ensure the
quality of chilled water, and de-icing salt mixtures and air
should be excluded from the water system, since they may
oxidize and corrode steel parts inside the heat exchanger.
o. The common outlet pipelines of combined units should
be provided with mixing water temperature sensor.
4.2 Connection drawing of pipeline system
Stop valve
Pressure gauge
Water flow switch
Gate valve
Flexible joint
Y-shaped filter
Thermometer
Circulating pump
Check valve
Automatic discharge valve
Symbol explanation
Fig. 4-1
Network ON
ć
A
#
#
#
O&I manual
6
Main unit
Expansion tank
Water replenishing
Dirt discharge valve
Differential pressure by-pass valve
Drain valve
Two-way valve
Three-way valve
Terminal
Auxiliary electric heater
Содержание ICHS-600KC-5
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