System Setup - Honeywell RTH7400 series Quick Start Manual

12a

System Setup

Step 1
Press and release the left button.
72
Fri 6:30
System Fan Auto
Cool
System & Fan Schedule
Step 2
Press and hold the center button until the
screen changes (approximately 5 seconds).
System Fan Auto
Heat Off Cool
System
Fan
Function Settings & Options
0120* Year Setting 20
(first two digits)
21
Year Setting
0130* 01
(second two
digits)
Month Setting 01
0140*
0150* Date Setting 01
Select System
0170 1
Type
2
3
4
5
6
7
8
9
10
Heating Fan
0180 0
Control
1
Heat Pump
0190 0
Changeover Valve
1
(for heat pumps
only)
Heating Cycle
0240 5
Rate
9
3
1
Emergency Heat
0270
Cycle Rate (heat
pumps only)
*
Functions set in Step 10.
Set To
72
PM
Clock & More
MCR33839
Done
MCR33840
= Year 20xx
= Year 21xx
- 99 (i.e., 2001 - 2099)
- 12 (i.e., January - December)
- 31
Heat/cool:
Gas, oil or electric heating with central air conditioning.
Heat pump:
Heat pump without backup or auxiliary heat.
Heat only:
Gas, oil or electric heat without central air conditioning.
Heat only with fan:
Gas, oil or electric heat without central air conditioning.
Hot water heat only (no fan):
Cool only:
Central air conditioning only.
Heat pump:
Heat pump with backup or auxiliary heating.
Heat/Cool Multiple stages:
Heat/Cool Multiple stages:
Heat/Cool Multiple stages:
Gas or oil heat:
Use this setting if you have a gas or oil heating system (system controls fan operation).
Electric heat:
Use this setting if you have an electric heating system (thermostat controls fan operation).
Cooling changeover valve:
Heating changeover valve:
Gas or oil furnace:
Standard gas/oil furnace (less than 90% efficiency).
Electric furnace:
Electric heating systems.
Hot water or high-efficiency furnace:
Gas/oil steam or gravity system:
Settings 5, 9, 3, or 1 recommended. Other settings: 2, 4, 6, 7, 8, 10, 11, 12.
The number indicates how frequently the system cycles on and off to maintain the set temperature. A higher number
means the system is on and off for shorter amounts of time, a lower number means longer on and off times. When
these settings are set to match the system type, the thermostat controls temperature more accurately.
Some functions may not appear
NOTE:
due to thermostat model or previous
selections made.
Step 3
1 Press to change setting.
s t
NEXT
2 Press to advance to next function.
DONE
3 Press to save & exit.
0120
Go Back Next
Gas, oil or hot water heat without central air conditioning.
W W2
2 heat stages (wires on and
W W2
2 heat stages (wires on and
W
1 heat stage (wire on ), 2 cooling stages (wires on
Use this setting if you connected a wire labeled "O" to the O/B terminal (see page 22).
Use this setting if you connected a wire labeled "B" to the O/B terminal (see page 23).
Hot water system or gas furnace (more than 90% efficiency).
Steam or gravity heat systems.
12
20
Done
MCR33841
Y
), 2 cooling stages (wires on and
Y
), 1 cooling stage (wire on ).
Y Y2
and ).
Y2
).