Dsl-520P Zone Thermostat - Robertshaw SlimZone Premier Installation And Operation Manual

The DSL-520P thermostat provides the following information to the SZP control module:
• heating, cooling, and fan requirements
• room temperature
• temperature setpoints (if temporary local override is requested)
DATA EXCHANGE: SZP CONTROL MODULE / SZEM MODULE
The SZP control module provides the following information to the SZEM module:
• high and low temperature limits
The SZEM module provides the following information to the SZP control module:
• outdoor temperature
• duct temperature and pressure
• status of high and low limits

5.1.2 DSL-520P ZONE THERMOSTAT

The DSL-520P zone thermostat provides local control of the following parameters:
MODE OF OPERATION
Local mode settings are requests only; calls for these modes are serviced only if the control
module is in that mode as well.
PERIMETER HEAT
When the SZP control module is unable to service a zone requesting heating because it is
currently servicing cooling or in a minimum OFF time, the thermostat will close its relay contact
on terminals R and W1 which may be used to energize a local perimeter heat device. When the
module is finally able to provide heating, perimeter heat will be disabled.
NOTE:
- Perimeter heat is allowed only when the control module is in the heat or auto mode.
- The perimeter heat relay is a 24VAC dry contact output (rated at 0.75Amps).
CONSTANT FAN
When global constant fan is selected, all zones are in the constant fan mode regardless of the
local fan setting. The fan (
fan is selected; it does not appear when global constant fan is selected.
TEMPORARY TEMPERATURE OVERRIDE
During the occupied period, individual zone temperature setpoints may be changed and remain
valid for the duration of the occupied period. The temporary setpoints are discarded when the
thermostat changes over to the unoccupied period (minimum one (1) hour).
During the unoccupied period, individual zone temperature setpoints may be changed and
remain valid for a period of one (1) hour, after which the temporary setpoints are discarded.
UNOCCUPIED MODE: SYSTEM & LOCAL
System:
Unoccupied Mode: Unoccupied mode occurs when all zone thermostats are in night mode.
Local:
Unoccupied Mode: Unoccupied mode occurs when a zone thermostat goes into night mode.
The minimum temporary override is (1) one hour and will remain in effect until the (1) one hour
period has elapsed. Moving into an unoccupied period (night mode) during this minimum
temporary override will not affect its status.
During the unoccupied period, zones 1 to 13 act as Must-Service zones when the zone
thermostat
Must-Service zones at this time.
SlimZone Premier
) symbol appears on the thermostat display when local constant
or buttons (system override) are depressed. Zones 14 to 19 do not act as
13