Commercial Programming Mode - Jackson Systems Comfort System T-21-P User Manual

COMMERCIAL PROGRAMMING MODE

Setting the clock
Touch the clock on the display. The day of the week will flash. Use the UP and DOWN arrows to
adjust the day. Touch the clock again. The hour will flash. Use the UP and DOWN arrows to adjust
the hour. If the time is PM, adjust the hour until the PM symbol appears. Touch the clock again. The
minutes will flash. Use the UP and DOWN arrows to adjust the minutes. Touch the clock again and
the thermostat will resume normal operation.
Mode selection
The T-21-P can control both heating and cooling. Touch the Mode box to cycle through and select
available modes. Based on equipment and thermostat configuration, mode selection can be as
follows:
Heat Set
PM
Heat
Day
Off - Thermostat will not call for heating or
cooling.
Heat - Thermostat only controls heating.
When heating system is running,
flashes.
Cool - Thermostat only controls cooling.
When cooling system is running,
flashes.
Auto - Thermostat controls both heating and
cooling. Heat
equipment is running.
E. Heat - Emergency heat for heat pump
systems should the compressor fail.
11
Heat
Cool
or Cool will flash when