Daikin EWYQ230DAYN [396/524] 40hp 90 100hp

Daikin EWAQ180DAYN [396/524] 40hp 90 100hp
Functional Control for a Standalone Unit ESIE06-05
2–170 Part 2 – Functional Description
3
1
2
4
5
Startup control
after defrost
recovery
1 Defrost recovery conditions satisfied.
2 For 40 - 100 Hp units: only 1 compressor in operation of this circuit during defrost recovery.
For 30 Hp units: keep the same number of compressors as used in the defrost function.
3 Energize 4-way valve.
4 Close cooling EV completely.
5 Turn fans ON.
6 For 30, 40, 90, 100 Hp units: EV opening for heating is defined as B(pls) for “C” sec (EEV KEEP
TIME), after this timer change to normal SH control.
For 50, 80 Hp units: EV opening for heating is defined as B(pls) and direct start with normal SH
control (EEV KEEP TIME is defined as 0 sec).
7 For 40 - 100 Hp units: after switching 4-way valve, keep 1 compressor running for “A” sec, after
this timer, change to normal heating mode.
For 30 Hp units: keep the same number of compressors for “A” sec, after this timer, change to
normal heating mode.
Remark :
In case of “A” sec timer < “C” sec timer then FF CONTROL function is invalid and not used when
a compressor is added.
In case of “A” sec timer > “C” sec timer then FF CONTROL function is valid and used when a
compressor is added.
Defrost recovery
Compressor 30hp
40-100hp
30,40hp
90,100hp
load
load
heatingEV
50-80hp
heatingEV
CoolingEV
4 way valve
Fan
A sec
C sec
Stable
Completely closed
50%
ON
ON
B pls fixed
Normal thermo control
Normal thermo control
Normal SH control
Initial opening angle B pls, normal SH control
EV
C
E

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