Honeywell RTH7400 series Owner's Manual

11
Function Description Setting
Press the s or t button to change the setting.
0170 Select System Type 1 Heat/cool: Gas, oil or electric heating with central air
conditioning.
2 Heat pump: Heat pump without backup or auxiliary heat.
3 Heat only: Gas, oil or electric heat without central air
conditioning.
4 Heat only with fan: Gas, oil or electric heat without central air
conditioning.
5 Hot water heat only (no fan): Gas, oil or hot water heat
without central air conditioning.
6 Cool only: Central air conditioning only.
7 Heat pump: Heat pump with backup or auxiliary heating.
8 Heat/Cool Multiple stages: 2 heat stages (wires on W and
W2), 2 cooling stages (wires on Y and Y2).
9 Heat/Cool Multiple stages: 2 heat stages (wires on W and
W2), 1 cooling stage (wire on Y).
10 Heat/Cool Multiple stages: 1 heat stage (wire on W), 2
cooling stages (wires on Y and Y2).
0180 Heating Fan Control 0 Gas or oil heat: Use this setting if you have a gas or oil
heating system (system controls fan operation).
1 Electric heat: Use this setting if you have an electric heating
system (thermostat controls fan operation).
0190 Heat Pump Changeover Valve
(for heat pumps only)
0 Cooling changeover valve: Use this setting if you connected
a wire labeled “O” to the O/B terminal (see page 6).
1 Heating changeover valve: Use this setting if you connected
a wire labeled “B” to the O/B terminal (see page 7).
0240 Heating Cycle Rate 5 Gas or oil furnace: Standard gas/oil furnace (less than 90%
efficiency).
9 Electric furnace: Electric heating systems.
3 Heat pump, hot water or high-efficiency furnace: Hot water
system or gas furnace (more than 90% efficiency).
1 Gas/oil steam or gravity system: Steam or gravity heat
systems.
0270 Emergency Heat Cycle Rate
(heat pumps only)
9 Electric furnace: Electric heating systems.
0300 Manual/Auto Changeover 0 Manual changeover (Heat/Cool/Off).
1 Automatic changeover (Heat/Cool/Auto/Off). Automatically
turns on Heat or Cool based on room temperature. Note:
System maintains minimum 3°F difference between heat and
cool settings.
0320 Temperature Format (°F/°C) 0 Fahrenheit
1 Celsius
0330 Daylight Saving Time On/Off 0 Off: No adjustment for daylight saving time.
1 On: Auto-change to daylight saving time (for areas that do
not use the new 2007 DST calendar).
2 On: Auto-change to daylight saving time (2007 and beyond,
for areas that use the new 2007 DST calendar).

Honeywell RTH7400 series Specifications

General

Display Type	Digital
Programmable	Yes
Program Periods Per Day	4
Wi-Fi Connectivity	No
Programmability	7-Day
Voltage	24V
Backlight	Yes
Power Source	Battery
Battery	AA
Temperature Range	40°F - 90°F