Honeywell T8700B Product Data

T8700B,C AN ELECTRONIC ROUND™ PROGRAMMABLE THERMOSTAT
68-0197—1
10
Table 5. Sequence of Operations.
a
When fuel switch is in the E position. (T8700B with Fan and T8700C).
b
T8700C only.
Fan Switch Settings System Switch Settings Call for Action Energize Terminals Display Icons
AUTO OFF None None None
ON Any Any G None
AUTO COOL
b
Cooling
b
G, Y
AUTO HEAT Heating W,G
a
CHECKOUT
Heating (T8700B,C)
1. Slide the System switch to HEAT and the Fan switch to
AUTO. (For T8700B1007 Heat Only model, a Fan switch
is not an option).
2. Press and hold the key to raise the temperature
setting several degrees above the room temperature
the heating equipment should start. In conventional
systems, the system turns on the fan through a limit
control. When using the thermostat with the fuel switch
set to the E position for electric heat, the fan starts
immediately.
3. Press the key to lower the temperature setting below
the room temperature. Heating equipment should stop.
Cooling (T8700C)
CAUTION
Equipment Damage Possible.
Operating at too low of an outdoor temperature
can cause compressor damage.
Do not attempt to operate cooling when outdoor
temperature is below 50°F (10°C). Refer to
manufacturer recommendations.
IMPORTANT
A mimimum off-timer for the T8700C assures that the
cooling compressor does not come on again for at
least five minutes after it turns off. The minimum-off
timer is triggered when the compressor turns off or
when the System switch is changed. If the compressor
turns off when the setpoint is changed, the minimum-
off timer is triggered. Power interruption and power
restoration also trigger the minimum off-timer.
1. Slide the System switch to COOL and the Fan switch to
AUTO.
2. To start the cooling equipment, press the key to
lower the temperature setting several degrees below
room temperature. The fan starts and stops with the
cooling equipment.
3. Press the key to raise the temperature setting above
the room temperature. Cooling system should shut down.
Fan (T8700B1015 with Fan, T8700C)
1. Slide the System switch to OFF and the Fan switch to
ON. The Fan should run continuously.
2. Slide the Fan switch to AUTO. In heating, the fan is
controlled directly by the heating equipment and starts
a few minutes after the heating equipment turns on (for
most systems). When using the thermostat with the
Fuel switch set to the E position for electric heat, the fan
starts and stops with the heating equipment. In cooling,
the fan starts and stops with the cooling equipment.
Make certain all equipment responds properly to the
thermostat.

Honeywell T8700B Specifications

General

Brand	Honeywell
Model	T8700B
Category	Thermostat
Language	English