91
Example:
Condenser with 6 fans.
CONDENSATION SP (COND_1):
+ 45ºC
POSITIVE SLOW ZONE DIFFERENTIAL WITH RESPECT TO COND_SP (COND_5):
4ºC
NEGATIVE SLOW ZONE DIFFERENTIAL WITH RESPECT TO COND_SP (COND_6):
8ºC
The start/stop points for the stages are located at the following evaporation
pressure levels:
Pvap (bar)
Tcond (ºC)
EVAP_5=4ºC
EVAP_1=45ºC
EVAP_6=8ºC
49ºC
47ºC
45ºC
43ºC
41ºC
39ºC
37ºC
No. of FANS
6 Fans
5 Fans
4 Fans
3 Fans
2 Fans
1 Fan
0 Fans
( COND_6)
(CONF_6)
t
PROPORTIONAL BAND
Fan
1
2
3
4
5
6
Start
39ºC
41ºC
43ºC
45ºC
47ºC
49ºC
Stop
37ºC
39ºC
41ºC
43ºC
45ºC
47ºC
The activation/deactivation points
for the different fans are:
The control action depends on the discharge probe reading in the following way:
Within the PROPORTIONAL BAND:
the minimum time interval between startups of fans is defined by the
parameter
TEMP_3
, while the minimum time interval between shutdowns of fans will be defined by the
parameter
TEMP_4
.
we make it easy
Summary of Contents for AKO-21006
Page 117: ...NOTES 117 we make it easy...
Page 118: ...118 NOTES we make it easy...
Page 119: ...NOTES 119 we make it easy...
