Electra WNG 9 - Heaters Operation Rules for RC and SH Groups

12a-14
CONTROL SYSTEM
Revision Y05-03 Service Manual - WNG
12Α.6.3. Heaters operation rules for RC and SH groups
• For both RC and SH groups, Heaters versus ΔT is as the following:
OFF
ON
ON
OFF
HE1
HE2
1 2 3 4
T=SP-RT [
o
c]
• Operation rules for Heaters in RC group:
a. Heaters can be enabled only if IFAN is ON,.i.e IFAN is in higher
precedence than the Heaters.
b. Heaters will operate according to ΔT and the following graph:
32
20
20
15
50
ON
OFF
ICT
45
HE-1
&
HE- 2
General:
Window: