Keypad Lock; Single/Dual Set Point Operation; Locking Cover; Dry Contact Switch/External Control - Carrier 33CSSP2-FC Owner's Manual

Heating to Cooling mode and Cooling to Heating mode when
required. The thermostat will automatically switch to maintain
the desired temperature setting. The thermostat does not need
to be manually changed from heating to cooling or cooling to
heating operation.
NOTE: It is recommended that auto-changeover mode not be
used if the outdoor temperature is consistently lower than 50 F
(10 C) or greater than 80 F (27 C). In these cases, select Heat-
ing or Cooling mode only.
Fan Operation —
The Fan button is used to select fan op-
eration. When only the Fan icon is shown, the fan is in "Auto"
mode and will run continuously (unless thermostat mode is set
to Off or thermostat is in unoccupied mode and heating or cool-
ing are not active). The thermostat will increase or decrease the
fan speed based on temperature demand.
Fan operation can also be set to always run at Low, Medi-
um, or High speeds. To set fan operation at Low speed, press
the Fan button until one bar is shown next to the Fan icon. The
fan will run continuously at Low speed (unless thermostat
mode is set to Off or thermostat is in unoccupied mode and
heating or cooling are not active).
To set fan operation at Medium speed, press the Fan button
until two bars are shown next to the Fan icon. The fan will run
continuously at Medium speed (unless thermostat mode is set
to Off or thermostat is in unoccupied mode and heating or cool-
ing are not active).
To set fan operation at High speed, press the Fan button un-
til three bars are shown next to the Fan icon. The fan will run
continuously at High speed (unless thermostat mode is set to
Off or thermostat is in unoccupied mode and heating or cooling
are not active).
Keypad Lock —
To prevent unauthorized use of the ther-
mostat, the front panel buttons can be disabled. To disable or
lock the keypad, press and hold the Mode button. While hold-
ing down the Mode button, press the UP and DOWN ARROW
buttons simultaneously. The ''Locked'' icon will appear on the
display.
The thermostat is unlocked by performing the same proce-
dure. Press and hold the Mode button. While holding down the
Mode button, press the UP and DOWN ARROW buttons si-
multaneously. The ''Locked'' icon will be removed from the
display.
Clock Backup —
In the event of a power loss, the ther-
mostat internal clock will continue to keep proper time for a
minimum of 48 hours without external power or batteries.
Minimum Heat/Cool
ence —
The heating and cooling set points will not be al-
lowed to be set any closer to each other than the value set by
the installer. The minimum temperature difference is enforced
during Auto mode and Program On operation.
Temperature Differ-
Single Set Point Operation —
is configured for single set point operation, the display on the
thermostat will change. Instead of displaying current room
temperature, the large number shown will be the user set point.
This set point is used for both heating and cooling. Press and
hold the Mode button for 2 seconds to display the room tem-
perature. Press any button to return to the normal display.
Dual Set Point Operation —
configured for dual set point operation, there are separate heat
and cool set points. The adjustable set point range is 35 to 99 F
(2 to 36 C). When the thermostat is in Heat or Cool mode, the
set points can be adjusted to any temperature within the operat-
ing range.
When the thermostat is in Auto mode, the thermostat will
not allow the Cool set point to be lower than the Heat set point.
The thermostat will also use the programmed Deadband value
(configured by installer) to determine the minimum difference
between the Heat and Cool set points. If the Deadband is set for
6 degrees, the Cool set point cannot be set within 6 F of the
Heat set point.
When entering Auto mode from Heat or Cool modes, the
Heat and Cool set points will remain spread apart by the same
amount when the set points are adjusted. For example, if the
Cool set point is 80 F (adjusted in Cool mode) and the Heat set
point is 70 F (adjusted in Heat mode), then when entering Auto
mode, both set points would be adjusted by the same amount
when the UP and DOWN ARROW buttons are pressed. There-
fore, if the DOWN ARROW was pressed 5 times, the Cool set
point would be 75 F and the Heat set point would be 65 F.
To adjust the set points individually, enter the Heat or Cool
modes first.
Outside Sensor —
2 seconds to display outside temperature (if optional outdoor
sensor is wired to thermostat). Press any button to return to nor-
mal operation.
Locking Cover —
screws is provided with the thermostat. The locking cover can
be used to keep the thermostat set points and configurations
from being changed. A special tool is required to remove the
cover.
Dry Contact Switch/External Control —
contact switch is provided to allow an external device to force
the thermostat into Occupied 1. When the thermostat is forced
into Occupied 1 via the dry contact closure, the Occupied 1
icon will blink each second.
In some cases, the dry contact switch may be configured to
disable the fan, heating, and cooling from a condensate over-
flow switch. In those applications, the fan coil unit will be de-
activated when the switch is energized.
4
When the thermostat
When the thermostat is
Press and hold the Fan button for
A locking cover with tamper-proof
A dry