STS11 Touchscreen Programmable Thermostat
82
Table 7. Sequence of Operation for Conventional Systems.
System Setting
Fan Setting
Call for Action
Energize Terminals
Screen Message
OFF AUTO None None None
COOL AUTO None None None
COOL or AUTO
AUTO
Stage 1 Cooling
Y, G
Cool On
COOL or AUTO
AUTO
Stage 1 Cooling
Y, G
Cool On
HEAT AUTO None None None
HEAT or AUTO
AUTO
Stage 1 Heating
W, G
a
Heat
On
HEAT or AUTO
AUTO
Stage 1 Heating
W, G
a
Heat
On
G
a
energizes only if Installer Setup number 0180 is set to Electric.
Table 8. Sequence of Operation for Power Open and Power Closed Valves or Normally
Open Valves.
System Setting
Fan Setting
Call for Action Energize
Terminals
Screen
Message
OFF AUTO None None None
HEAT N/A None Y None
HEAT N/A Heat W Heat
On
System Setting
Fan Setting
Call for Action Energize
Terminals
Screen
Message
OFF AUTO None O/B
a
None
COOL AUTO None O/B
a
None
COOL or AUTO
AUTO
Stage 1 Cooling
Y, G, O/B
a
Cool
On
HEAT AUTO None O/B
a
None
HEAT or AUTO
AUTO
Stage 1 Heating
Y, G, O/B
a
Heat
On
a
Configure O/B in Installer Setup (cooling = O or heating = B).
STS11 Touchscreen Programmable Thermostat
83
Table 9. Sequence of Operation for Heat Pump Systems.