Daikin R407C PLUS - Page 98

Si33-105 Outline of Control (Outdoor Unit) < Symbols using in this manual >
Function R407C PLUS Series Heat Recovery System 87
"
3
Accumulator discharge operation ending conditions
"
4
Main outdoor unit side (EV1, EV2) : Outdoor unit EV control during accumulator discharge
operation.
PI control activated when SHS = 10
(initial opening degree: 200 pls
In the case of an LP retry, the next PI control is provided at SHS = 5.
When condition
"
3 is met, the next startup condition is reset to SHS = 10.)
Sub outdoor unit side(EV3)
500 pls fixed
"
5
When returning to normal outdoor EV control, the PI control is provided at that opening degree.
"
8
Opens receiver solenoid valve for 60 seconds 1 minute after the preparation mode is activated.
However, the valve is closed when Th7 – Te < 0.
"
9
The upper limit frequency is restricted to 67Hz+OFF(+OFF) during accumulator discharge
operation.
"
10
50pls after 10 sec elapsed until LP<0.3MPa, thereafter, operate with 500 pls.
"
11
For 20 sec: H+ON(+ON+ON)/ON+ON
→
H+ON(+ON+ON)/ON+OFF
&
OR
DSHi>30
Th7 – Te>10
LP<0.1MPa
Elapsed time of 10 minutes
Pc>2.0MPa
Elapsed time of 1 minute after
completion of oil return operation
OR
(V0811-2)