Robertshaw DSL-520P, Installation And Operation Manual

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14 SlimZone Premier
MINIMUM EQUIPMENT ON TIME (short cycle protection)
The minimum amount of time the thermostat will call for heating or cooling may be set to either
2 or 4 minutes via switch #1 on the back of the thermostat. This timer is initiated the moment
the request is made, regardless if the control module services the demand immediately. When
equipment is activated, it will not shut off until both the thermostat’s and the SZP control
module’s minimum ON times have elapsed; timers run concurrently.
The thermostat has no minimum OFF time setting.
CLOCK DISPLAY FORMAT
Time may be displayed in either 12 or 24 hour format. Press and hold the FAN button, then
press the OUTDOOR button to change the format.
TEMPERATURE DISPLAY FORMAT
The temperature may be displayed in either °C or °F format. Press the
and buttons
simultaneously to change the format.
5.1.3 SZEM ENVIRONMENTAL MODULE
The SZEM module monitors the system ductwork pressure and controls a motorized bypass
damper accordingly. The module also monitors the ductwork air temperature and signals the
SZP control module when the high and low limits have been exceeded. The SZEM module can
also be installed with an outdoor temperature probe. The outdoor temperature is
communicated to the SZP module.
5.2 SYSTEM PROGRAMMING
All system programming is done at the SZP control module.
5.2.1 PROGRAMMING FEATURES
The SlimZone Premier system offers the following programming features:
• 7 day programmable
• 2 or 4 events per day (morning, day, evening, night)
• individual zone schedules
- zones 1 - 12 may have unique schedules
- zones 13 - 19 use the same schedule
• copy a day schedule to consecutive days or to all days of the week
• copy a zone program to other zones
5.2.2 SCHEDULES
The SZP control module can execute the schedules as follows:
NORMAL:
The control module executes the programmed schedules normally.
SUSPENDED: PERMANENTLY
When this mode is selected, the programmed schedules are disregarded and the user must
enter override temperature setpoints to which all zone thermostats will be controlling. Local
override is still allowed but for a duration of one (1) hour (unoccupied mode). The system will
remain in the PERMANENTLY SUSPENDED mode until the user changes it.
SUSPENDED: TEMPORARILY (UNTIL)
When this mode is selected, the programmed schedules are disregarded and the user must
enter override temperature setpoints to which all zone thermostats will be controlling. The time
and date when the system is to return to the NORMAL mode also must be entered. Local