System Operation 18,000/24,000 btuh Models, cont.
Other Controls
7) Indoor Fan Control, cont.
Fan Only "Auto" Mode
a) T
ambient > T
indoor
b) T
+ 20 F <= T
setpoint
c) T
ambient < 20 F of T
indoor
T
preset
T
T
preset
Fan Speed
Dry Mode
The indoor fan will be set to low speed.
Heating Mode
a) T
ambient <= T
indoor
b) T
+ 10 F < T
setpoint
c) T
ambient >= T
indoor
T
preset
T
T
preset
Fan Speed
Product Introduction
+ 40 F
fan will run on high speed
setpoint
,
ambient <= T
indoor
setpoint
fan will run on low speed
setpoint,
T
amb.
+ 40 F
preset
-20 F
High
+ 10 F
fan will run on high speed
setpoint
,
ambient < T
indoor
setpoint
+ 20 F
fan will run on low speed
setpoint
,
T
amb.
+ 50 F
preset
+10 F
Off
+ 40 F
fan will run on medium speed
,
Med.
Low
Off
+ 50 F
fan will run on medium speed
,
Low
Med.
High
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