SyxthSense SST-A24-302 - User Manual

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Enquiries: T: 0844 840 3100 F: 0844 840 3200
PS TH6.90 - 1/5
SST Series Digital Thermostats
SST series are elegant thermostats with a large clear LCD screen.
The thermostats are operated with five high quality buttons. The
SST range is available with a range of models to suit most heating
applications.
The SST thermostats can be extensively applied for residential,
indu
strial and commercial environment. The thermostats have
switching rating of up to 16A 230V making them suitable for both
wet systems and electrical heating systems.
Depending on the model, the thermostats can operate using
inter
nal or external sensor and can have an additional high limit
floor sensor.
The SST range has RS485 communication capability making them
idea
l for multi-zone and for high energy efficiency applications.
Features
• 24VAC or 230VAC Power Supply
• Large Digital Display with Back-Light
• Flush Mounted for Sophiticated Look
• Switching rating up to 16A 230V
• Celcius / Fahrenheit Display
• Low Temperature Protection
• Unique Lockable Keypad
• RS-485 Modbus Communication Network
• All temperature readings and settings ava
ilable via Network
Product sheet TH6.90
Thermostat Type SST
Model Type Model Description
SST-A24-302 Digital Thermostat, 24Vac, Floor Sensor
SST-A24-304 Digital Thermostat, 24Vac, Internal/External Sensor
SST-A24-306 Digital Thermostat, 24Vac, Internal/External and Floor Sensor
SST-A230-302 Digital Thermostat, 230Vac, Floor Sensor
SST-A230-304 Digital Thermostat, 230Vac, Internal/External Sensor
SST-A230-306 Digital Thermostat, 230Vac, Internal/External and Floor Sensor
SST-RB-01 Flying Lead Floor Temperature Sensor
SST-RC02 Infrared Remote Control for the Room Thermostats
TEFM-NTC100K Flush Mounted NTC100k Temperature Sensor
Technical Data Power Supply A24 Models: AC24V ± 10%, DC24V
A230 Models: AC230V ±10% 50/60Hz
Power Consumption < 1W
Switching Voltage AC220V ± 10% 16A SPST N/O (Resitive Load)
Output Signal ON/OFF
Measurement Range 5..95°C
Accuracy 0.5°C/F
Working Temperature 0..70°C
Sensor Characteristics NTC100kOhm
Setpoint Range 5 to 95°C/F
Terminals Max 2.5 mm
2
(min 0.5mm
2
)
Communication RS485 Modbus RTU, up to 32 devices (logical address range 1..32)
Modbus Settings 9600 baud, 8 Data Bits, None Parity, 1 Stop Bit, Maximum Setpoint
Writes 100,000 Cycles (Holding Register)
Color White with Glass Panel

Summary

SST Series Digital Thermostats Overview

Key Features

Highlights the main features of the SST series, including display, power, and communication capabilities.

Model Specifications

Details available SST thermostat models, their descriptions, and associated sensors or controls.

Technical Data

Provides comprehensive technical specifications including power, switching, accuracy, and communication protocols.

Operating Instructions and Conditions

Environmental Conditions

Specifies operating temperature, humidity limits, storage conditions, and relevant environmental standards.

Basic Operation

Guides on turning the unit on/off, setting desired temperatures, and manual temperature overrides.

Advanced Functions and Error Handling

Details keypad lock, timer functions, error codes, communication status, and low temperature protection.

Wiring and Advanced Settings

Wiring Diagrams

Illustrates the electrical wiring connections for both 230VAC and 24VAC versions of the SST thermostat.

Advanced Parameter Configuration

Explains the procedure to enter and modify advanced configuration parameters for thermostat operation.

Parameter Settings and Control

Sensor Reading and Setpoints

Covers adjusting sensor readings and configuring lowest and highest allowed setpoints.

Temperature Control and Protection

Details hysteresis, low temperature protection, and floor sensor limit temperature settings.

Network and Time Settings

Configuration for Modbus network address, sleep mode, and 12/24 hour time format.

External Override and Switching Periods

Information on external on/off override and default switching period settings.

Physical Dimensions and Networking

Thermostat Dimensions

Provides detailed physical dimensions and mounting hole specifications for the thermostat.

Modbus Networking

Explains Modbus networking setup, precautions, cable requirements, and termination.

Box Contents

Lists the items included in the SST thermostat packaging.

SyxthSense SST-A24-302 Specifications