RTH4300B Programmable Thermostat
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About your new thermostat
Press the t button to select your heating sys-
tem and optimize its operation:
5 Gas or oil furnace: Use this setting if you have
a standard gas or oil furnace that is less than
90% efficient.
9 Electric furnace: Use this setting if you have
any type of electric heating system.
3 Hot water or high-efficiency furnace: Use
this setting if you have a hot water system or a
gas furnace of greater than 90% efficiency.
1 Gas/oil steam or gravity system: Use this
setting if you have a steam or gravity heat
system.
NOTE: If Function 5 does not appear,
please turn to the next page to continue.
Function 5: Heating cycle rate
Press to change setting.
When finished, press to
advance to the next
function.
To Next Page
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