Honeywell RTH2510 User Manual

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Programmable Thermostat RTH2510
7
System switch (Heat/Cool)
Use the System switch to place the system in
one of the following modes:
• Cool: System is in Cooling mode.
• Off: System is off.
• Heat: System is in Heating mode.
CAUTION: EQUIPMENT DAMAGE HAZARD. 
Do not use Cooling mode when the outdoor temperature is below 50°F (10°C).
69-2381ES-01 (RTH2510 7-day OM) ENG USA.fm  Page 7  Tuesday, October 20, 2009  11:18 AM