Hanbell RC2-100AF, Manual

Page: 33 / 117

32
Stepless capacity control
Note
：
ON : Solenoid valve energized
OFF: Solenoid valve not energized
In continuous capacity control system, two normally close solenoid valve are equipped as standard. These two
solenoid valves are controlled by the chiller temperature controller, hence refrigeration capacity can be modulated
between S (start) %

100% continuously. The exactness of temperature control depends on the precision of
temperature sensor.
The timer resolution of control system, affects the capacity contro
l’s speed. Hanbell recommends setting the timer
resolution between 0.1~1second to have a precise capacity control. If the resolution is set more than 1 second,
then it is recommended to add a flow control device to obtain a smooth capacity control.
Solenoid Valve 1 1 2 3 4
Normal Open / Normal Close
NO NC NC -- --
Standard / Optional OPTIONAL STANDARD STANDARD
-- --
Control
Logic
Start ON OFF ON -- --
Loading OFF ON OFF -- --
Unloading ON OFF ON -- --
Hold /
Stable
ON OFF OFF -- --