TEMPMASTER
52
FORM TPM3-EG1 (518)
Occupied Heating –
In the occupied heating mode, the unit controller monitors the RAT
and compares it to the RAT heating setpoint. The RAT heating setpoint is entered into the
unit controller through the setpoints key, heating subsection of the user interface. If the
RAT is equal to or less than the RAT heating setpoint minus 0.5°F, the unit controller will
place the unit in the occupied heating mode. The unit will remain in the occupied heating
mode until the RAT is equal to or greater than the RAT heating setpoint plus 0.5°F.
Unoccupied Cooling –
In the unoccupied cooling mode, the unit controller will monitor
the zone temperature and compare it to the unoccupied zone cooling setpoint. The unoc-
cupied zone cooling setpoint is set through the setpoints key, cooling subsection of the
user interface. If the zone temperature is equal to or greater than the unoccupied zone
cooling setpoint temperature plus 0.5°F, the unit controller will place the unit in the unoc-
cupied cooling mode. The unit will remain in the unoccupied cooling mode until the zone
temperature is equal to or less than the unoccupied zone cooling setpoint minus 0.5°F.
Unoccupied Heating –
In order for the unoccupied heating mode to function, the night
set back setting must be set to enable. This can be done through the program key, heating
subsection of the user interface. In the unoccupied heating mode, the unit controller will
monitor the zone temperature and compare it to the unoccupied zone heating setpoint.
The unoccupied zone heating setpoint is set through the setpoints key, heating subsec-
tion of the user interface. If zone temperature is equal to or less than the unoccupied zone
heating setpoint minus 0.5°F, the unit controller will place the unit in the unoccupied heat-
ing mode. The unit will remain in the unoccupied heating mode until the zone temperature
is equal to or greater than the unoccupied zone heating setpoint plus 0.5°F.
Controls (Cont'd)
CURRENT RAT IS MORE
THAN THE ACTIVE COOLING
RAT SETPOINT PLUS 0.5°F.
SUPPLY FAN IS BEING
CONTROLLED TO THE
ACTIVE DUCT STATIC
SETPOINT.
THERE IS NO DEMAND
FOR COOLING BASED
ON THE ACTIVE RAT
COOLING SETPOINT.
SUPPLY FAN IS BEING
CONTROLLED TO THE
ACTIVE DUCT STATIC
SETPOINT.
NOTES:
1. WHENEVER THE UNIT ENTERS AN ACTIVE COOLING OR HEATING MODE, THE UNIT CONTROLLER WILL UTILIZE AS MANY OR AS FEW STAGES OF COOLING OR
HEATING THAT IT NEEDS TO ACHIEVE AND MAINTAIN THE ACTIVE SUPPLY AIR TEMPERATURE (SAT) SETPOINT.
2. UNIT MODES WILL STAGE DOWN WHEN THE ZONE TEMPERATURE IS 0.5°F UNDER THE SETPOINTS FOR COOLING AND 0.5°F OVER THE SETPOINTS FOR HEATING.
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OCCUPIED STANDBY
OCCUPIED COOLING
OCCUPIED STANDBY
OCCUPIED HEATING
Variable Air Volume (VAV)
CURRENT RETURN AIR
TEMPERATURE (RAT) IS
MORE THAN THE ACTIVE
HEATING RAT SETPOINT
MINUS 0.5°F. SUPPLY FAN IS
BEING CONTROLLED TO
THE ACTIVE DUCT STATIC
SETPOINT.
THERE IS NO DEMAND
FOR HEATING BASED
ON THE ACTIVE RAT
HEATING SETPOINT.
SUPPLY FAN IS BEING
CONTROLLED TO THE
ACTIVE DUCT STATIC
SETPOINT.
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LD20073
FIGURE 4 -
OPERATIONAL MODE: VARIABLE AIR VOLUME (VAV)