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3.7
External Piping
No.
1
Thermometer
2
Ball valve
3
Pressure meter
4
close the ball valve to let the chilled water go to the cooling unit via the branch so as to avoid
Pipeline washing
chemical substances. For pipeline washing, use a hose to create a short circuit to make
the chilled water go directly from the inlet end to the return end without passing through the
1
2
3
4
TI
PI
01
01
Inlet
(Bypass)
TI
02
Outlet
(Figure 3-13: Suggested external piping)
Description
5
6
7
PI
02
(Precision
PI
Cooling Unit)
03
No.
5
6
Balance valve
7
4 6
7
at the return water end for adjusting the return
17
Chapter 3
Description
1
at the water inlet end as shown
5
in the water inlet pipe to
3
in front of or
Installation
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