Daikin EWYD360BZSL handleiding
Handleiding
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f
r
= pump supply frequency at rated flow
A tuning procedure is available to allow the setting of
∆
h
r
.
This procedure has to be activated with unit on, both compressors running at 100% and all
terminal units on. When this procedure is active the pump speed may be adjusted manually from
70% to 100% (35 to 50Hz) and the they bypass valve is completely close (0V output) and the
evaporator water ∆T is shown. When the operator, changing the pump speed reaches the right water
∆T will stop the setup procedure and the pump head is chosen as
∆
h
r
(head setpoint).
If the setup procedure has not been executed the system will work with 100% pump speed
and bypass valve completely closed and a “No pump VFD calibration alarm” will rise (delayed by
30 minutes) without stopping the unit.
During the operation a PID controller acts on the pump speed to keep the pump head to the
target value
∆
h (reducing the speed as well as the head increases) and keeping the bypass valve
completely close; the PID controller will never reduce the pump speed below 75% (35Hz) since this
is the operating limit of inverter pump, if this set is reached and the head continues to increase a
PID controller will start to open the bypass valve.
The reverse occurs when pump head decreases; the controller will start to close the valve
and when it is completely closed it will start to speed-up the pump.
Pump speed and bypass valve will never move together (to avoid flow instability); pump
will be adjusted from 100% to minim flow, valve will be used when required flow is below the
minimum.
At the unit startup the pump will start at minimum frequency (35 Hz) and will accelerate up
to 50 Hz in 10 sec. while the bypass valve is completely open (100% output).
Then it will start to regulate pump head accordingly to the previous procedure; the
compressors start will be enabled once the target pump head is reached (within a 10% tolerance).
6.20. Fans control
Fans control is used to manage condensation pressure in cooling, cooling glycol or ice
mode and evaporating pressure in heating mode.
In both cases the fans may be managed to control:
•
Condensation or evaporation pressure,
•
Pressure ratio,
•
Pressure difference between condensation and evaporation.
Four control methods are available:
•
Fantroll,
•
Fan Modular,
•
Variable speed driver,
•
Speedtroll.
Bekijk gratis de handleiding van Daikin EWYD360BZSL, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Daikin |
| Model | EWYD360BZSL |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 10110 MB |
