SALUS HTR24 Wired Electronic Thermostat Non-Programmable User Manual

: June 6, 2024
: SALUS

SALUS HTR24 Wired Electronic Thermostat Non-Programmable User Manual

IMPORTER:

QL CONTROLS Sp. z o.o. Sp. k. ul. Rolna 4, 43-262 Kobielice PRODUCER: Salus Limited
6/F, Building 20E, Phase 3, Hong Kong Science Park, 20 Science Park East Avenue, Shatin, New Territories, Hong Kong

Introduction

HTR24(20) is a surface-mounted (or on a flush-box) room thermostat dedicated for surface heating / cooling control, characterized by high thermal inertia. It is connected to the wiring centre, through which you can lower the set temperature on it, receiving a signal NSB (night temperature reduction) from the weekly thermostat. The room temperature could be set by knob use. Thanks to the built-in algorithms, it offers much better temperature control accuracy than traditional mechanical thermostats. The thermostat is characterized by silent operation.

Product compliance

The product complies with the following EU directives: 2014/30/EU, 2014/35/EU, 2011/65/EU. Full information is available at www.saluslegal.com

Note!

This document is a quick guide to the installation and operation of the product and indicates its main features and functions. Detailed information is available in the full manual, which is available at www.salus-controls.eu and must be used for proper installation and operation of the product.

SAFETY INFORMATIONS:

Use in accordance with national and EU regulations. Use the device as intended and keep it dry. Product for indoor use only. Please read the entire manual before starting the installation and using the product.

INSTALLATION:

Installation must be carried out by a qualified person, with appropriate electrical authorisations, in accordance with national and EU standards and regulations. The manufacturer shall not be liable for failure to comply with the manual.

NOTE:

There may be additional protection requirements for the entire installation. The installer shall be responsible for compliance with such requirements.

Package content

Proper thermostat location

The ideal position to thermostat mounting is about 1,5m under floor level far from heating or cooling sources. In addition, the thermostat should not be installed behind curtains or other obstacles or in places with high humidity, as this will prevent accurate measurements of room temperature. The thermostat must not be exposed to sunlight. Do not place the thermostat on an outer wall.

Connection description

Note: The thermostat is compatibile with the following Salus wiring centre models: KL06 24V, KL08NSB 24V, KL04NSB 24V or directly to the actuator.

Symbols explanation:

Montage

Make sure that the thermostat is not connected to the 24V AC. Remove the knob by pulling it towards you, and then open the front cover as shown in the
figure above.

Connect the thermostat. Please refer to “Connection Description” section. Mount the thermostat using the designed screw holes.

Jumpers for additional settings

The functions of the HTR24(20) thermostat can be switched on and off by jumpers. Please refer to the table below:

Jumpers 1 to 5 correspond to the number of actuators connected. This jumper is factory set to position 1, which means that the thermostat controls one actuator. Depending on the number of actuators used, the jumper position must be changed to ensure optimal operation of the temperature thermostat.

Selecting the heating or cooling mode

Heating or cooling mode is based on the voltage sent to the CO terminal. 0V AC at the CO terminal – the thermostat is in heating mode. 24V AC at the CO
contact – the thermostat is in cooling mode.

Cooling blocking function.

Cooling on: Set the jumper to ON . The thermostat will work in cooling mode if 24V AC will appear at the CO terminal. The LED lights up blue when the
thermostat sends a signal for cooling.

Night setback – NSB function

The NSB (Night Set Back) function enables automatic reduction of the temperature setpoint on the daily thermostats, via the programmable thermostat connected to the wiring centre. The temperature change takes place between day and night temperatures. When the night mode is activated, the programmable thermostat sends a voltage signal to the daily thermostats via the wiring centre.
Then, the HTR24(20) thermostat automatically reduces the temperature setpoint on the knob by 2° or 4° (as set on the SETBACK jumper). In heating mode, the temperature is lowered when 24 V AC voltage appears at the NSB input.

Note: For the proper NSB function work, an appropriate cable connection is required. The connection description is on the previous page.

Valve Protection

Set the jumper to ON – to enable or OFF – to disable the function. This function activates the thermostatic valve for 5 minutes once a week to prevent valve against stuck (caused by limescale).

Operation algorithm selection

The thermostat gives a possibility to choose the mode of controlling the room temperature by PWM algorithm (default) or hysteresis +/-0.5°C. The PWM algorithm is designed for underfloor heating (for heating systems with high inertia) – to precisely maintain the room temperature.