Specifications

ManualsBrandsCarrier ManualsConsumer electronicsCARRIER COMFORT SYSTEM 33CS

High/Low Temperature Limit Display — When a Heating

or Cooling Temperature Limit is exceeded the monitor ther-

mostat ﬂashes the appropriate system annunciators.

COOL ﬂashes when a Low Temperature Limit is

exceeded. HEAT ﬂashes when a High Temperature Limit is

exceeded. An SE11 alarm will occur.

HEATING AND COOLING TIME GUARD — When the

Time Guard Between Modes option is ON, the monitor ther-

mostat cannot change system modes until the heating/

cooling time guard period has expired. The heating and cooling

time guard is 5 minutes.

When the Time Guard Between Modes option is OFF, the

Monitor-Only and VVTt Monitor Thermostat cannot change

system modes until a 30-second time delay has expired.

NOTE: The Construction System Thermostat cannot change

system modes until the heating/cooling time guard period

has expired.

To conﬁgure the Time Guard Between Modes option, set

category 4, option 2. Use the left set point buttons to toggle

the option ON and OFF. The default is ON.

UNOCCUPIED TIME GUARD — The Unoccupied Time

Guard determines how long the monitor thermostat will wait

before starting the heating/cooling equipment when the moni-

tor thermostat goes from Unoccupied to Occupied mode. The

length of the time guard is 0 to 189 seconds (determined by

the ﬁrst 6 bits of the address of the heating/cooling equip-

ment). This keeps the equipment from starting simulta-

neously which keeps peak energy usage down.

TIME GUARD OVERRIDE — When the Time Guard Over-

ride option is set to ON, the monitor thermostat heating/

cooling Time Guard and Unoccupied Time Guard are reset

to 30 seconds.

NOTE: When the Time Guard Override option is used, the

monitor thermostat will automatically reset the Time Guard

Override to OFF.

When the Time Guard Override option is set to OFF, the

heating/cooling Time Guard and Unoccupied Time Guard

determine the time guard length based on the monitor ther-

mostat device address.

To conﬁgure the Time Guard Override option, set

category 4, option 3. Use the left set point buttons to toggle

the option ON and OFF. The Time Guard Override option

will return to OFF when the override is complete. The de-

fault is OFF.

POWER-UP TIME GUARD — The power-up time guard

determines how long the monitor thermostat will wait

before starting the heating/cooling equipment when the moni-

tor thermostat is powered up. The length of the time guard

is 5 minutes plus 0 to 189 seconds (determined by the ﬁrst

6 bits of the address of the heating/cooling equipment). This

keeps the equipment from starting simultaneously which keeps

peak energy usage down.

Temperature Lockouts — Heating and cooling lock-

out temperatures can be conﬁgured to lock out the system

mode based on the outside-air temperature. When the Heat-

ing Temperature Lockouts option is set to ON, and the outside-

air temperature exceeds the Heating Lockout Temperature

Set Point, the monitor thermostat will not select a system

heating mode. If the system is currently in the system heat-

ing mode, the monitor thermostat will complete the current

system mode.

NOTE: In order to use lockout temperatures, the monitor ther-

mostat must have an outdoor air sensor wired to the relay

pack or damper board or must be receiving outdoor-air tem-

perature over the network.

When the Cooling Temperature Lockouts option is set to

ON, and the outside-air temperature drops below the Cool-

ing Lockout Temperature Set Point, the monitor thermostat

will not select a system cooling mode. If the system is cur-

rently in the system cooling mode, the monitor thermostat

will complete the current system mode.

When either the Cooling or Heating Temperature Lockout

options are set to OFF, the System Heating and Cooling Mode

Lockout functions are disabled.

To conﬁgure the Cooling Temperature Lockout option, set

category 4, option 11. Use the left set point buttons to toggle

the option ON and OFF. The default is OFF.

To conﬁgure the Heating Temperature Lockout option, set

category 4, option 13. Use the left set point buttons to toggle

the option ON and OFF. The default is OFF.

Heating Lockout Temperature Set Point — The

Heating Lockout Temperature Set Point establishes the sys-

tem outside air trip temperature for the Heating Temperature

Lockout and the Supplemental Heat Lockout.

To disable the monitor thermostat heating lockout func-

tions, set the Heating Temperature Lockout and Supplemen-

tal Heat Lockout options to OFF.

To conﬁgure the Heating Lockout Temperature Set Point,

set category 4, option 14. The range of values is 10 to 80 F

in 1° F increments. Use the left set point buttons to increase

or decrease the set point. The default is 60 F.

Cooling Lockout Temperature Set Point — The

Cooling Lockout Temperature Set Point establishes the sys-

tem outside air trip temperature for the Temperature Lock-

out function.

To disable the monitor thermostat cooling lockout func-

tions, set the Cooling Lockout Temperature function to OFF.

Temperature Lockouts (cooling mode only) is disabled.

To conﬁgure the Cooling Lockout Temperature Set Point,

set category 4, option 12. The range of values is 10 to 80 F

in 5° F increments. Use the left set point buttons to increase

or decrease the set point. The default is 40 F.

Pre-Occupancy Purge — When the Pre-Occupancy

purge option is set to ON, the monitor thermostat will enable

the economizer (if conﬁgured to control the economizer), com-

mand associated zones to go to the maximum damper po-

sition, and start the indoor-fan motor to send fresh air into

the zone. Sixty minutes before the Occupied mode is pro-

grammed to start, if the Auxiliary Relay is conﬁgured for

economizer control, the auxiliary relay will be energized.

When the Pre-Occupancy Purge option is set to OFF, the

purge will not occur.

To program the Pre-Occupancy Purge option, conﬁgure

category 4, option 19. Use the left set point buttons to toggle

the option ON or OFF. The default is OFF.

NOTE: The Pre-Occupancy Purge will not work if the moni-

tor thermostat is conﬁgured to receive a global schedule.

DAMPER CONTROL

The monitor thermostat, in the VVT Monitor conﬁgura-

tion, modulates a zone damper to maintain the zone tem-

perature conditions as determined by the occupied or unoc-

cupied set points.

The monitor thermostat in VVT Monitor conﬁguration has

4 modes of damper operation available. The monitor ther-

mostat selects a damper mode based on zone conditions and

uses pressure dependent operation to control its damper

position.