Honeywell PRESTIGE THX9321 User Manual
Page 41
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THX9321 PRESTIGE
®
2.0 AND THX9421 PRESTIGE
®
IAQ WITH EIM
41
68-0311—02
3200
Heating Throttling
Range
1° F to 30° F
2° F
Commercial No
The default Heating Throttling Range is 2° F
(1.5° C) which is appropriate for most
applications. Do not change this setting
unless advised to do so by Honeywell
technical support.
The throttling range controls the cycling of
the system and helps to compensate for
load changes, equipment sizing and
thermostat mounting location.
3210
Heating Integral
0, 100 to 25,000 sec
10,000 sec
Commercial No
The default Heating Integral is 10,000
seconds which is appropriate for most
applications. Do not change this setting
unless advised to do so by Honeywell
technical support.
The integral controls how much droop is
used.
3220
Heating Derivative
0, 100 to 25,000 sec
0 sec
Commercial No
The default Heating Derivative is 0 seconds
which is appropriate for most applications.
Do not change this setting unless advised
to do so by Honeywell technical support.
The derivative makes adjustments to the
algorithm for fast acting systems.
3240
Minimum
Compressor Off
Time
Off
1 - 5 minutes
5 minutes
Both
No
The thermostat has a built in compressor
protection (minimum off timer) that
prevents the compressor from restarting
too early after a shutdown. The minimum-
off timer is activated after the compressor
turns off.
If there is a call during the minimum-off
timer, the thermostat shows “waiting for
equipment” in the display.
3260
Extended Fan Run
Time in Cool
0, 30, 60, 90 seconds, 2, 3, 4, 5,
6, 7, 8, 9, 10, 11, 12, 13, 14, 15
minutes
0 seconds
Both
No
After the call for cooling ends, the
thermostat keeps the fan on for the
selected amount of time for increased
efficiency. This may re-introduce humidity
into the living space.
3260
Extended Fan Run
Time in Heat
0, 30, 60, 90 seconds, 2, 3, 4, 5,
6, 7, 8, 9, 10, 11, 12, 13, 14, 15
minutes
0 seconds
Both
No
After the call for heating ends, the
thermostat keeps the fan on for the
selected amount of time for increased
efficiency.
4000
Number Of
Schedule Periods
2 or 4 periods per day
4 periods per
day
Both
No
Residential:
4 Periods = Wake, Leave, Return, Sleep
2 Periods = Wake, Sleep
Commercial:
4 Periods = Occupied 1, Unoccupied 1,
Occupied 2, Unoccupied 2
2 Periods = Occupied 1, Unoccupied 1
4010
Pre-Occupancy
Purge Duration
Off
1 hour
2 hour
3 hour
Off
Commercial No
Runs the fan 1 to 3 hours before each
occupied period to provide a comfortable
workplace upon arrival.
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name
Settings
Default
Residential,
Commercial
or Both
Requires
EIM
Notes