Honeywell RTH8580WF manual System setup, 0190, 0240, 0250, Function, Settings & Options, 0180

System setup

How do I customize my heating/cooling system? (See page 51 for instructions.)

Function Settings & Options

Note: Depending on system settings, functions on this page might not appear.

0180	Heating Fan	0	Gas or oil heat: Use this setting if you have a gas or oil heating system
	Control		(system controls fan operation).
		1	Electric heat: Use this setting if you have an electric heating system
			(thermostat controls fan operation).
0190	Heat Pump	0	Cooling changeover valve: Use this setting if you connected a wire
	Changeover Valve		labeled “O” to the O/B terminal.
	(for heat pumps	1	Heating changeover valve: Use this setting if you connected a wire
	only)		labeled “B” to the O/B terminal.
0240	Heating Cycle	5	Gas or oil furnace: Standard gas/oil furnace (less than 90% efficiency).
	Rate	9	Electric furnace: Electric heating systems.
0250	Heating Cycle	3	Hot water or high-efficiency furnace: Hot water system or gas furnace
			(more than 90% efficiency).
	Rate Stage 2	1	Gas/oil steam or gravity system: Steam or gravity heat systems.

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