APC INROOM ACPSC3000 Instrukcje Operacyjne Pobierz pdf (Strona 39)

39InRoom Controller - Operating Instructions

➊

➋

200%

100%

75%

50%

➋➊

200%

175%

100%

75%

50%

➋➊

200%

150%

100%

75%

50%

➋➊

Control

The corresponding commands:

Times are entered in seconds.

The numbered callouts refer to the corres-

ponding passages in the descriptive text.

Display Valves

Suction valve

The start temperature for the suction valve

is entered as a positive difference to the

room temperature setpoint. ➊

You can adjust a gradient, which deter-

mines the temperature range in which

the valve opening increases from 0 to

100%.➋

If the cooling unit is equipped with two

refrigerant circuits, only the ﬁrst refrigerant

circuit can be equipped with a suction

valve.

Depending on how you choose the start

points for the compressors you can

exploit the proportional control range of

the suction valve to a maximum. (See

examples.)

The suction valve has a control range of

50% - 100% of the compressor cooling

capacity.

Comp. 1

Comp. 2

Comp. 1 Comp. 2

Setpoint

Cool.

cap.

Comp. 1

Comp. 2

Comp. 1 Comp. 2

Cool.

cap.

Setpoint

Comp. 1

Comp. 2

Comp. 1 Comp. 2

Cool.

cap.

Setpoint

Suction

valve

Suction

valve

Suction

valve

Graphic A Graphic B Graphic C

The graphics A-C show, for a

DX2-unit, how you obtain a double

proportional control range by ap

proaching the stop point of the 2nd

compressor to the start point of the

suction valve.

suctionv 1 start 0.2

suctionv 1 grad 0.9

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 105 106

Komentarze do niniejszej Instrukcji

Brak uwag

APC INROOM ACPSC3000 Instrukcje Operacyjne Strona 39

Komentarze do niniejszej Instrukcji