background image

SALUS Controls Plc 

Units 8-10 Northfield Business Park 

Forge Way, Parkgate 

Rotherham, S60 1SD 

United Kingdom

T: 01226 323961

E: [email protected]

www.salus-controls.com

SALUS Controls is a member of the Computime Group.

Maintaining a policy of continuous product development SALUS Controls plc reserve the right to 
change specification, design and materials of products listed in this brochure without prior notice.

Introduction

Control box description

Product compliance

Technical Information

The CB500X extension module control box is an element of the underfloor heating / cooling control 

system. The control box allows you to control 5 different zones. Number of controlled zones can be 

increased up to 15 zones by connecting CB500X extension modules to the CB500 unit which is equipped 

with a module system that controls the source of heating and cooling. Each individual zone can be 

operated by one thermostat. Thermostat which require 230V power supply has to be powered directly 

from control box. The spring clamps provide quick and convenient wiring connections. The control box is 

designed to work with NC (normally-closed) type actuators. It is recommended to mount it on a surface 

or on a DIN rail.

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 and RoHS directive 2011/65/EU. 

The full text of the EU Declaration of Conformity is available at the following internet address: 

www.saluslegal.com.

Use in accordance with current 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 current national and EU regulations.

Before attempting to setup and install, make sure that the devices is not connected to any power 

source. Installation must be carried out by a qualified person. Incorrect installation may cause damage 

to the devices. The CB500X should not be installed in areas where it may be exposed to water or damp 

conditions.

Safety information

Manual

Control box extension for 5-zone UFH

Model: CB500X

1.  

Cartridge fuse 5 x 20 mm T2A 

 

2.  

Power supply 

*

 

3.  

NSB (Night Set Back reduction) function 

4.  

Actuators output connections (AC 230V)

5.  

Thermostats input connections

6.  

CB500X extension input

Power Supply

230 V AC

Total Load Max

1 A

Outputs

Actuators (AC 230V) 

Dimensions [mm]

270 x 110 x 55

4

6

6

6

5

3

2

1

1. Fuse

Note: 

Replacement of the fuse to be carried out only when the control box is disconnected 

from power supply (230 V ~).

WARNING!

 DO NOT connect power supply to the CB500X power supply input when it is connected together with CB500. CB500X power supply input have to be used only when control box extension works  

      as standalone device.

Main fuse is located under the housing cover next to power supply terminals and secures the control box 

and the devices connected to it. Use ceramic tube slow blow 250 V ROHS fuses (5x20 mm) with nominal 

max current 2A. To replace fuse remove the fuse holder with a flat screwdriver and pull out the fuse.

2. Power Supply

3. NSB (Night Set Back reduction) function

The NSB (Night Set Back) function enables you automatically reduce the setpoint temperature on 

non-programmable thermostats via programmable thermostat connected to the same control box or an 

extension module. NSB function changes comfort to economic setpoint temperatures for each thermostat 

individually. The programmable thermostat, e.g. installed in the living room, sends a signal to the 

non-programmable thermostats through a control box (by wires). Then, the non-programmable 

thermostats automatically reduce the setpoint temperature according to the value set on them. The NSB 

terminal is marked with the clock icon - all NSB terminals are connected together within control box. The 

NSB function works only in a 4-wire installations (see connection diagrams).

230 V AC

L

N

4. Actuators connection

Actuators wires should be plugged into the spring clamps of the respective zones. Maximum current load 

for each zone is designed to handle up to 6 actuators with a power of 2W each. With more actuators in 

one zone, an additional relay should be used to make sure that actuators output will be not overloaded.

Example based on T30NC 230 V actuators

Note: 

Depends on the 

thermostat heating/cooling 

state - 230 V AC may appear 

on the actuators output.

Power supply for control box is 230 V ~ 50Hz.

Three wire installation should be made in accordance 

with the current applicable regulations.

 

The 

red

 LED will  illuminate    

 

inidicating that the control box is  

 

connected to the power supply.

3

AUG 2021

V15

Отзывы: