16
2.
When the (FA)st heating cycle rate is selected in the configuration
menu, (see configuration menu item 2), the thermostat will call for heat at
0.5ºF (0.5ºC) below set-point, and turn off at set point. When the (SL)ow
heating cycle rate is selected, the thermostat will call for heat at 1.5ºF (1.5ºC)
below set-point, and turn off at set-point. When the thermostat calls for heat,
the display will show
Heat On.
If the
Heat On
display is flashing, the
compressor lockout feature is operating in the heat pump mode. (Note: See
Configuration menu item 8).
Cooling System
CAUTION!:
To prevent compressor and/or property damage, if the outdoor
temperature is below 50ºF (10ºC),
DO NOT
operate the cooling system.
1.
Move the
SYSTEM
switch to the
COOL
position.
Summary of Contents for T21STK-2
Page 1: ...1 OPERATING T21STK 2 INSTRUCTION...
Page 7: ...7 INSTALL THE THERMOSTAT ATTACH THERMOSTAT BASE TO WALL PULL THE COVER OFF THE BASE...
Page 12: ...12 Wiring Diagrams Figure 3 Typical wiring diagram for heat cool 5 wire two transformer system...
Page 13: ...13 Figure 4 Typical wiring diagram for heat cool 4 wire single transformer system...
Page 20: ...20...
Page 35: ...35 THERMOSTAT LCD DISPLAY Figure 2...
Page 36: ...36 THERMOSTAT BUTTONS AND SWITCHES Figure 3...
Page 38: ...38...
Page 39: ...39...
Page 40: ...40...
Page 41: ...41...
