Setting Fan And System Switches; Em/Aux Ht Indications; Operation - Honeywell T8411R Installation Instructions Manual

T8411R ELECTRONIC HEAT PUMP THERMOSTAT
A
ENGAGE TABS AT TOP OF THERMOSTAT
WITH SLOTS ON MOUNTING PLATE.
B
PRESS LOWER EDGE OF
CASE TO LATCH.
Fig. 6. Mounting thermostat to wallplate.

OPERATION

Setting FAN and SYSTEM Switches

Fan and system settings are controlled manually by using
the switches located at the bottom of the thermostat case.
See Fig. 7.
FAN Switch
Fan switch settings are as follows:
On: The fan runs continuously. Use for improved air
circulation.
Auto: Normal setting for most homes. The fan starts
and stops with the equipment.
69-1037
DASHED LINES INDICATE TABS
ON BACK OF THERMOSTAT
M11332
Slide the switch in the bottom left corner of the thermostat
to select the desired fan setting.
SYSTEM Switch
System switch settings control thermostat operation as
follows:
Cool: Thermostat controls the cooling system.
Off: Both heating and cooling are off.
Heat: Thermostat controls the heating system.
Em Ht: Thermostat cycles Auxiliary Heat (W2) and
Emergency Heat Relay (E) as needed to maintain
setpoint. Terminal L is energized continuously.
(Fault heat relay is on continuously.) Cooling system
is off. Compressor is de-energized.
Slide the switch in the bottom right corner of the thermo-
stat to select the desired system setting.
FAN SWITCH
Fig. 7. Temperature display and system switches.
Em Ht and Aux Ht Indications
The indicator points to either Emergency Heat (Em Ht)
or Auxiliary Heat (Aux Ht) when these modes are active.
Em Ht: The indicator points to Em Ht when the
SYSTEM switch is set at Em Ht.
Aux Ht: The indicator points to Aux Ht when auxiliary
backup heat is needed to help handle the heating
load.
INDICATOR
Em Ht
Aux Ht
Set Room
Set Temperature Setpoint
NOTE: Temperature setpoint range is 40°F to 99°F
(4°C to 39°C).
4
TEMPERATURE DISPLAY
INCREASE SETTING
DECREASE SETTING
SYSTEM SWITCH
M10287
M11330