3-11
Module 4 –
Wireless HVAC Thermostats
ST898ZB Optima S Thermostat
Section 3
6 - Frost Protection
Temperature below which the thermostat will call for
heat regardless of mode .
Range: °Fahrenheit – 41°F to 59°F
°Celsius – 5°C to 15°C
7 - Temperature Offset
Temperature added to measured temperature to
account for calibration issues .
Range: °Fahrenheit – 41°F to 59°F
°Celsius – 5°C to 15°C
8 - Display Language
Message area text language .
Range: EN – English (default), FR – French, ES – Spanish
9 - Region
Region for thermostat configuration .
Range: US – USA (default), CA – Canada
10 - Equipment Type
11 - Fan Control
Range: FURNC – Furnace controls the circulation fan
TSTAT – The Optima S controls the circulation fan
11 - Reversing Valve
Term. Function
Range:
O/B rev . valve terminal energized for cooling
O/B rev . valve terminal energized for heating
12 - Clock Format
Range: 12 Hour Format
Note: Only available when 24 Hour Format
paired to a network
Settings / Functions (Continued):
Range: Heat Pump
Furnace/AC, Gas/Oil
Electric (Default)
Heat Pump + Emergency Heat
Functions
13 - Identify Mode
Press
to begin Zigbee
IDENTIFY Function for
10 minutes
14 - Start Pairing
Press
to delete network
settings and attempt to pair
with a network
15 - Factory Reset
Press
to reset the thermostat
parameters to factory defaults .
Press
to confirm reset .
All current thermostat settings will be lost .
The Range for config. screen #11 depends on this selection. For
, the Range is for Fan
Control function. For
or
, the Range is for the Reversing Valve wire terminal function.
