22
Fig. 27 — Unoc. SP
Unoccupied operation is only available on units with Night Set
-
back ETO, which includes night setback mode and return air
damper. Night Setback is not field installable. The following set
points may be displayed on the unoccupied set points screen:
COOLING:
• SAT - In unoccupied cooling mode, the unit will operate to
maintain the cooling supply air temperature set point. If
the unit SAT drops below set point, HGRH is enabled to
reheat the SAT up to set point
• ZAT - When the zone air temp rises above the set point, the
unit enters unoccupied cooling mode.
DEHUMIDIFY:
• ZRH - When the zone relative humidity rises above the set
point, the unit enters unoccupied dehum mode.
HEATING:
• SAT - In unoccupied heating mode, the unit will operate the
heat source to maintain the heating supply air temperature
set point.
• ZAT - When the zone air temp falls below the set point, the
unit enters unoccupied heating mode.
Tech Settings
The Tech Settings screen can be accessed from the Home screen
(
Home
Setup)
and displays links to all technical settings for the
unit. See Fig. 28.
Fig. 28 — Tech Settings
Pressing a link will open the associated screen. Because tech set
-
tings can affect unit operation, an Admin (1111) or Factory pass
-
word is required to access tech settings.
The availability of settings is based on the unit configuration and
control configuration. Refer to the Config screen under Tech Set
-
tings for available configurations.
Unit Control Configuration
The unit configuration screen (
Home
Setup
Unit Config.
)
displays the unit control configuration information. See Fig. 29.
Fig. 29 — Unit Config
The top of the unit configuration screen shows the unit model and
serial information. The factory work order number is also
included. These numbers can be referencing when requesting
support on the equipment.
Occ Controls lists the method of unit occupancy control (BAS, lo
-
cal schedule, 24/7, or start/stop switch). The method of occupancy
control can be changed in the Tech Setup screen (
Home
Set
-
up
Tech. Setup
). The BAS enable section shows the current unit
status (disabled, enabled).
The following settings change be adjusted on the Unit Control
Configuration screen:
ZONE SENSOR OPTION
NOTE: The 62X is not intended to maintain space conditions. The
zone air sensor option is only intended for energy purposes (ZAT/
SAT reset) and to help offset some of the space load (ZAT/SAT re
-
set or Night Setback)
The zone sensor option is used only for ZAT/SAT reset or Night
Setback operation (ETO). See the Tech Setup screen
(
Home
Setup
Tech. Setup
) for ZAT/SAT reset settings. See
Misc. Options B below for Night Setback configuration. The fol
-
lowing zone sensor options are available:
• None - no zone air temperature sensor
• ZAT Only - zone air temp (Carrier ZS) sensor for use with
ZAT reset or Night Setback (unoccupied cooling and heat
-
ing).
• ZAT and Z-RH - zone air temp and RH (Carrier ZS-RH)
sensor used for ZAT reset or Night Setback (unoccupied
cooling and heating)
• Alternate - use alternate zone air temp sensor (Equipment
Touch)
• CO
2
- not used with 62X
PUSH-BUTTON OVERRIDE
Allows a zone sensor with push-button occupancy override to
override unoccupied mode and enter the unit into occupied mode
for a set period. Each press of the push button override provides
