Johnson Controls Hx 3 S1-THXU430W Installation Manual page 42

5407934-UIM-C-1119
TABLE 7:
General System Settings (Continued)
Default
Name
Setting
Line
60 HZ
Frequency
Brands York
42
Available
Settings
50 HZ or 60 HZ
None, York,
Coleman,
Luxaire,
Champion,
Fraser-Johnson
Explanation
Used to ensure the thermostat opera-
tion timers are accurate and allow for
preemptive control if a power-out
occurs. The thermostat uses the line
frequency as a timing source for the tim-
ers it controls. If you choose the incor-
rect line frequency, the timers are
inaccurate. For example, if you select
the 50 Hz option when operating on a
60 Hz power grid, a timer that is nor-
mally 5 minutes is 6 minutes. Similarly,
if you select the 60 Hz option when
operating on a 50 Hz power grid, a timer
that is normally 6 minutes is 5 minutes.
If the correct line frequency is selected
and the timers are not accurate, this
may be due to an impending power
cycle or an abnormality in the power
quality.
Allows you to specify which brand dis-
plays on the Sleep screen
Johnson Controls Ducted Systems