Electra PXD912 - Page 76

CONTROL SYSTEM
11-10 SM PXD 1-E.3 GB
11.4.3 Sequence Diagrams
a. Maintaining room temp at desired level by comparing RT and SPT with user
defined IFAN speed.
(RT - SPT) [
o
c]
+3
+2
+1
0
-1
-2
ON
OFF
ON
OFF
USER FAN SPEED
ON
OFF
COMP
(WVL)
OFAN
IFAN
RV
CONTENT