Chapter 7 Start-Up 37
Liebert.CRV Series Air Conditioner User Manual
Position indicator on
0 = CLOSED valve
(3-way valve: by-pass open)
Position indicator on
1 = OPEN valve
(3-way valve: by-pass closed)
0
1
0
1
Position indicator on 0:
closed valve (three-way
valve: by-pass open)
Position indicator on 1:
open valve (three-way
valve: by-pass closed)
Figure 7-2 Position of the chilled water valve actuator (for two-way or three-way valve)
Note:
1. In the unlikely event of control system failure, the valve can be manually controlled by means of the rotary knob. It
can be used to drive the actuator into any position between 0 and 1.
2: When actuator stem is completely down, the valve is open and chilled water coil is supplied.
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