SALUS KL08NSB 24V Wiring Centre Instruction Manual

: June 6, 2024
: SALUS

Table of Contents

SALUS KL08NSB 24V Wiring Centre
Introduction
Safety information
Wiring center description
INSTALLATION
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

SALUS KL08NSB 24V Wiring Centre

SALUS KL08NSB 24V Wiring Centre image

Introduction

The KL08NSB 24V wiring centre forms the heart of a Underfloor Heating controls system. It allows easy and quick connection of thermostats and actuators. It has integrated pump and boiler control module and overload protection. KL08NSB 24V wiring centre is adapted to work with NC and NO type actuators (normally closed and normally open). Up to 8 thermostats can be connected to the KL08NSB 24V, while KL04NSB 24V extension allows to connect additional 4 thermostats (12 in total). NOTE! 24V/230V transformer is included with the set with the control box.

Product compliance

This product complies with the essential requirements and other relevant provisions of the following EU Directives: EMC 2014/30/EU, Low Voltage Directive LVD 2014/35/EU, RoHS directive 2011/65/EU. The full text of the EU Declaration of Conformity is available at the following internet address: www.saluslegal.com.

Safety information

Use in accordance with national and EU regulations. Device is intended for indoor use only in dry conditions. Product for indoor use only. Installation must be carried out by a qualified person in accordance to national and EU regulations.
Before attempting to setup and install, make sure that KL08NSB 24V is not connected to any power source. Installation must be carried out by a qualified person. Incorrect installation may cause damage to the wiring centre. The KL08NSB 24V should not be installed in areas where it may be exposed to water or damp conditions.

Technical Information

Wiring center description

SALUS KL08NSB 24V Wiring Centre fig 1

Cartridge fuse 5 x 20 mm 12 A
Power supply
NSB function terminals
NC/NO jumper (actuator type)
Delay jumper
Boiler control output
Pump control output
Actuators connection
Serial connector for the KL04NSB 24V extension
Reset button
Thermostats connection

Fuse

Note : Replace the fuse only when the wiring centre is disconnected from power supply (24 V ~).

Main fuse is located under the housing cover next to power supply terminals and secures the wiring centre and the devices connected to it. Use ceramic tube fast blow 250 V ROHS fuses (5×20 mm) with nominal max current 12,5 A. To replace fuse remove the fuse holder with a flat screwdriver and pull out the fuse.

Power Supply

NSB (Night Set Back reduction) function and thermostats grouping

NSB function is activated in non-programmable Salus thermostats of the Expert, HTR series via external signal. NSB 24 V signal (night-time temperature reduction) is sent via an external timer or programmable thermostat connected to the KL08NSB 24V wiring centre. Non-programmable thermostats are receiving NSB signal and reducing setpoint temperature (by switching to eco mode). All thermostats have to be connected using a 4-wire cable (min. 4 x 0,75 mm2, max. 4 x 1,5 mm2).

NSB function application in combination with thermostats grouping.

OPTION 1

One Master thermostat which is common for thermostats from Group 1 and Group 2 (one programmable thermostat e.g. HTRP(50) 24V, other thermostats are non- programmable e.g. HTR(20) 24V).

OPTION 2

Two Master thermostats. One for Group 1 and one for Group 2 (two programmable thermostats e.g. HTRP(50) 24V, other thermostats are non-programmable e.g., HTR(20) 24V)).

OPTION 3

One external clock which is common for thermostats from Group 1 and Group 2 (one external clock + daily regulators e.g. HTR(20) 24V)).

OPTION 4

Two external clocks. One for Group 1 and one for Group 2 (two external clocks

non-programmable regulators e.g. HTR(20) 24V)).

4. NC/NO jumper

Select the type of the thermoelectric actuator connected to the wiring centre: NC – actuator normally closed. NO – actuator normally opened Jumper position change must be refreshed in the memory by pressing the Reset button (short press).

5. Delay jumper

Boiler off delay time.

Note : Pump (Pump output) and boiler (Boiler output) always starts 3 minutes after receiving the heating signal from any thermostats connected to wiring centre. Pump stops 3 minutes after the last call for heating sent by the thermostat and the heat source (boiler) will turn off after the time set on Delay jumper. Jumper position change must be refreshed in the memory by pressing the Reset button (short press).

6. Boiler control output

Boiler output – this is a volt free output (COM / NO) that controls the boiler in the heating system. The output closes and the boiler turns on but always after 3 minutes after receiving the heating signal from any of thermostats paired with wiring centre. The output opens and the boiler switches off when the last thermostat stops sending heat demand (after the time set on the Delay jumper).

7. Pump control output

Pump output – this is a volt free output (COM / NO) that controls the circulation pump in the heating / cooling system. The output closes (pump starts) always after 3 minutes from the moment of receiving the heating / cooling signal from any of thermostats paired with wiring centre. The output opens (pump stops) 3 minutes after the last demand for heat/cool sent by the thermostat.

8. Actuators connection

SALUS KL08NSB 24V Wiring Centre fig 11
The actuator wires should be secured with the self locking connectors in the appropriate zone. Up to 6 actuators with a load of up to 2 Watts each can be connected to a single zone. Should more than 6 actuators be required in a zone use an additional relay to relieve the output.

9. Serial connector for the KL04NSB 24V extension

SALUS KL08NSB 24V Wiring Centre fig 12
The Serial connector is used to connect the KL08NSB 24V with the KL04NSB 24V extension module to add functionality and support up to12 zones.