Power Outage; Advanced Settings; Thermostat System Configuration - Emerson 810-1600 Installation And Operation Manual

3.7. Power Outage

In case of a power outage, the last settings of the thermostat are kept in volatile 
memory and retrieved upon power restore. The only exception not stored in 
non-volatile memory is the Manual Override Mode (see Section 3.5.8., Manual
Override). The thermostat is equipped with an RTC (Real-Time Clock) device that
is connected to a backup battery. This lithium coil cell battery only maintains time
and date in the unlikely event of a power outage. The expected lifetime of the battery
is seven (7) years.

3.8. Advanced Settings

3.8.1. Thermostat System Configuration

Default Value: IDLE
The thermostat can control different types of HVAC equipment, and is configured
accordingly by the thermostat control configuration. The supported types are 
Conventional Systems such as Rooftop Units (RTU) and Heat-pump Systems (HP).
To prevent any damage to the system upon first boot-up sequence of the thermostat,
once installed, the default control configuration is IDLE, which means that all 
outputs are set in floating state to prevent any equipment issue.
Stage
Heat 1
Activated 2
Cool 1
Activated 2
Table 3-10 - Thermostat Configuration
Power Outage
RTU (Roof-Top
IDLE
Unit) Conventional
(Default)
System
- W1
- W1+W2
- Y1
- Y1+Y2
HP_O
(Heat-pump)
Y1 Y1+B
Y1+Y2 Y1+Y2+B
Y1+O Y1
Y1+Y2+O Y1+Y2
HP_B
(Heat-pump)
Operation • 27