Carel MuChiller UCHBD00001130, Руководство пользователя

Страница: 63 / 108

User Code Description Def Min Max UOM
M Hc12
NO6 configuration
0=Frost protection
1=Source fan/pump
0 0 1 -
S S065
Type of source fan
0/1=Modulating/ON-OFF
0 0 1 -
S S028 Source fan in cooling: set point 30.0 -999.9 999.9 °C
S S029 Source fan in heating: set point 10.0 0.0 99.9 °C
S S031 Source fan in cooling: set point at start-up 45.0 0.0 999.9 °C
S S032 Source fan: delay at start-up in cooling 240 0 999 s
S S034 Source fan: differential in cooling 15.0 0.0 99.9 K
S S035 Source fan: differential in heating 5.0 0.0 99.9 K
S S036 Modulating source fan: min speed value 20.0 0.0 100.0 %
S S037 Modulating source fan: max speed value 80.0 0.0 100.0 %
The following diagram shows the two control modes (modulating or on-off) in chiller operation (cooling):
Fig.5.o
Key
Max speed Modulating source fan: max speed value
Min speed Modulating source fan: min speed value
SP Control set point
DT Control differential
Tc Condensing temperature
5.13.2 Control in chiller mode
Fan control may be modulating or ON-OFF and is based on the saturated temperature value, equivalent
to the condensing pressure, limited by Tc max.
User Code Description Def Min Max UOM
S C017 Max high pressure threshold (HP) 65.0 0.0 999.9 °C
S S028 Source fan in cooling: set point 30.0 -999.9 999.9 °C
S S034 Source fan: differential in cooling 15.0 0.0 99.9 K
S S036 Modulating source fan: min speed value 20.0 0.0 100.0 %
S S037 Modulating source fan: max speed value 80.0 0.0 100.0 %
The control diagram is shown below:
ENG
µC0300053EN rel. 1.0 – 23.07.2018
5. Functions | 63