Honeywell RTH8580WF User Manual page 57

System setup
How do I customize my heating/cooling system? (See page 51 for instructions.)
Function
Note:
Depending on system settings, functions on this page might not appear.
0180
Heating Fan
Control
0190
Heat Pump
Changeover Valve
(for heat pumps
only)
0240
Heating Cycle
Rate
0250
Heating Cycle
Rate Stage 2
Settings & Options
Gas or oil heat: Use this setting if you have a gas or oil heating system
0
(system controls fan operation).
1 Electric heat: Use this setting if you have an electric heating system
(thermostat controls fan operation).
Cooling changeover valve: Use this setting if you connected a wire
0
labeled "O" to the O/B terminal.
Heating changeover valve: Use this setting if you connected a wire
1
labeled "B" to the O/B terminal.
5 Gas or oil furnace: Standard gas/oil furnace (less than 90% efficiency).
Electric furnace: Electric heating systems.
9
Hot water or high-efficiency furnace: Hot water system or gas furnace
3
(more than 90% efficiency).
1 Gas/oil steam or gravity system: Steam or gravity heat systems.
55
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