Daikin EWYQ230DAYN [346/524] A 18 9 bar 2 6 bar 2 6 bar b3 35 bar high pressure

Daikin EWYQ230DAYN [346/524] A 18 9 bar 2 6 bar 2 6 bar b3 35 bar high pressure
Functional Control for a Standalone Unit ESIE06-05
2–120 Part 2 – Functional Description
3
1
2
4
5
Remark:
There are different switching points for fan up depending if 1 or 2 compressors are running in that
circuit.
The parameters for the fan regulation can be changed in the Service/Fan menu.
High pressure
control: Fanstep
up/down by
pressure A/B1/B2
HP < A : if below setpoint for 10 sec then 1 fanstep DOWN
HP > B1 or B2: 1 fanstep UP.
- Min time for next fan step up 90sec.
- Min time for next fan down 180 sec
During these timer no fanstep up or down is allowed.
-If 1 compressor is running or no compressor running, then:
B1(50%)=B1-2,6b & B2(50%)=B2 - 2, 6b.
-Extra condition For Fanstep up, Compare present High pressure and High pressure from 30 sec
before (memorize and compare with sampling time of 5 sec.), Fanstep up is only allowed if there
is a rise of 1,9 bar or more.
-Extra condition For Fanstep down, Compare present High pressure and High pressure from 30
sec before, Fanstep down is only allowed if there is a drop of 1,9 bar or more.
High pressure
control: Fanstep
up/down be
pressure B3
(Avoid problem of Fan up decline because of minimum time up condition.)
HP > B3. 1 fanstep up.
- Minimum time between fanstep up (by B1/B2 or B3) and next fan step up (by B3) is 20 sec.
Fan control based
on Ambient
Temperature with
inverter fans
Ambient based control for inverter fans.
During the first 70 seconds (default value), after startup of a circuit, the fan control is based on the
ambient temperature. After this timer the fan control changes to high pressure control based on high
pressure control.
Fanstep
H
M
L
A:18,9 bar
2,6 bar 2,6 bar B3: 35 bar
High pressure
In case 1 comp or
no compr running
B2:27,5 bar B1:32,4 bar
Min. time
between UP&
UP: 20sec
Min. time between
UP& UP: 90sec
Min. time between
DWN& DWN:
180sec
B2 (50%):
24,9 bar
B1 (50%):
29,8 bar
Step UP
Step
Down

Содержание

Скачать