27
Item
Dis-
play
Possible
Value
(flashing)
overview
factory
Settings
To access: Press MODE and PROG together for 5 seconds, repeat to exit; automatically exits after 20 seconds idle
Temperature
Setting scale 01 F-C
F
C
Fahrenheit
Celsius
F
Select temperature scale for display and operating
settings.
Heat source
02
HEAT
ON
OFF
Available
Not available
See
Note 3
Set this to ON if the unit is equipped with the electric
heater option. The electric heater is required for DRY
mode operation and for automatic changeover operation
.
Heat pump
(see Note 1) 03 H-P
ON
OFF
Available
Not available
OFF
Set this to ON if the unit is built for heat pump operation
and connected to an appropriate compressor unit.
Auto
changeover
differential
(ACO)
(see Note 2)
04 d-b
2
3
4
5
6
2° – 6°
2°
Auto changeover automatically operates the unit in
heating or cooling based on room temperature versus
setpoint. This setting is the dead band temperature:
Cooling is on while room temperature is at setpoint PLUS
dead • band. Heating is on while room temperature is at
setpoint MINUS dead • band. Example: setpoint = 68°F,
dead band is 3°F — cooling is on with • room temperature
at or above 71°F — heating is on with room temperature
at or below 65°F.
Check filter
time
05 F:Lt
2
5
7
10
12
250 hours
500 hours
750 hours
1000 hours
1250 hours
10
Set this time for automatic notice of time to change the
filter. At the end of the time period, the control will display
a FILTER CHECK warning. This warning will also appear
if four evaporator freeze-ups should occur in a 24-hour
period.
Room air
sampling
06 A:r
0 (OFF)
5
10
15
20
Disabled
5 minutes
10 minutes
15 minutes
20 minutes
15
During stand-by periods, room air sampling causes the fan
to cycle on For short period of 60 sec at the time interval
specified here. This ensures the unit’s temperature sensor
will see an accurate sampling of room air (avoiding
comfort problems due to stratification).
Auto Re-Start
after power
outage
07 A-P
ON
OFF
Enabled
Disabled
ON
Set to ON for the unit to automatically restart after a
power outage. Set to OFF for the unit to remain off after a
power outage.
Note 1 Setting 03, Heat pump, is SKIPPED if setting 02, Heat source, is OFF.
Note 2 Setting 04, Auto changeover, is SKIPPED if setting 03, Heat source, is OFF.
Note 3 Factory setting is ON if electric heat is installed in unit, or OFF if electric heat is not installed
SeTTINg THe CONTROlleR
Table 7
configuration Mode for UnHV Air Handlers
Содержание UNHV09
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Страница 44: ...Phone 1 800 228 9364 Fax 1 800 232 9364 2201 Dwyer Avenue Utica NY 13501 ...