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3.8.4 Flow Meter (Optional Accessory)
•
It is recommended that you install a flow meter on the CoolDoor’s supply pipeline to
ensure sufficient flow of all CoolDoors and adjust for accurate balance values. Delta
provides flow meter options for customers.
•
The flow meter is usually installed in the chilled water supply pipeline on site, at the
inlet of the soft tube at the water inlet of the CoolDoor, and the customer supply pipeline
is installed under the raised floor. When installing the flow meter, maintain a distance
of 5 times the pipe diameter from the front pipe.
•
Connect the power supply to the corresponding position of the terminal block, as shown
in
Figure 3-14
. This flow meter is directional, and the direction of water flow is the same
as that of the arrow. The inlet is connected to the outer piping, and the outlet is
connected to the inlet soft tube.
(Figure 3-14: Flow Meter)
Flow Meter
Link
Flow direction
Refer to
Figure 3-14
External thread
G1-1/4” (BSP)
1. GND-Black
Wire to 13A
2. DC24V-Brown
Wire to 12B
3. Feedback-Blue
Wire to 8B
4. NA-White
Wire cut off
Test all on-site pipes and connections for air or nitrogen leakage (50psi at maximum), and
then fill and exhaust the system. Only when the system pressure test shows no leakage can
you continue filling and exhausting the system.
