TemperZone UC8 User Manual

Temperzone UC8 Operation, OSA models with inverter, issue 1
Page 9 of 27
A TZT-100 thermostat can also be powered by an isolated 24V AC power source:
For all installations DIP switch 4 inside the TZT-100 must be ON: Reverse cycle valve On when heating.
3.3. Thermostat communication settings
The communications format must be set in accordance with Modbus RTU standard settings:
• Baud rate 19200
• 8 Data bits
• Even parity bit
• 1 Stop bit
• TZT-100 modbus device address 7
• SAT-3 modbus device address 8
• The thermostat should be configured for 1-stage operation
Refer to the thermostat installer manual for procedures to check and adjust the settings in a SAT-3 or
TZT-100 thermostat.
4. Connecting to external devices using Modbus RTU over RS485
The UC8 provides a serial communications port (terminals A1 & B1) for RS485 type signals and wiring.
Full monitoring and control are available through this port. The communications protocol used is
Modbus RTU.
For more information refer to document “Temperzone UC8 – Modbus RTU serial communications”.

TemperZone UC8 Specifications

General

Brand	TemperZone
Model	UC8
Category	Controller
Language	English