SALUS CB500 5 Zones 230V Control Box User Manual
- June 5, 2024
- SALUS
Table of Contents
SALUS CB500 5 Zones 230V Control Box
Introduction
The CB500 control box is the main element of the underfloor heating / cooling control system. It has a built-in module that controls the heat and cool sources. The control box allows you to control 5 different zones. Number of controlled zones can be increased up to 15 zones by using additional CB500X extension modules (CB500 main control box + two CB500X extension modules). Each individual zone can be operated by one thermostat. A thermostat that requires a 230V power supply has to be powered directly from the control box. The CB500 has voltage-free outputs designed to control a boiler, heat pump or chiller. It allows you to switch between heating and cooling modes. It is equipped with 230V voltage outputs for a pump and actuators. 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.
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 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 CB500 is not connected
to any power source. Installation must be carried out by a qualified person.
Incorrect installation may cause damage to the control box. The CB500 should
not be installed in areas where it may be exposed to water or damp conditions.
Technical Information
Control box description
- Cartridge fuse 5 x 20 mm T10A
- Power supply
- NSB (Night Set Back reduction) function
- Jumpers settings
- Boiler control output (volt free)
- Heat Pump / Chiller control output (volt free)
- Heating / Cooling modes change input (volt free)
- Dew point sensor input (volt free)
- Pump/Valve control output (AC 230V)
- Actuators output connections (AC 230V)
- Thermostats input connections
- CB500X extension input
Fuse
Note: Replacement of the fuse to be carried out only when the control box is disconnected from power supply (230 V ~).
The 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 (5×20 mm) with nominal max current 10A. To replace fuse remove the fuse holder with a flat screwdriver and pull out the fuse.
Power Supply
The power supply for control box is 230 V ~ 50Hz.
Three wire installations 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.
NSB (Night Set Back reduction) function
The NSB (Night Set Back) function enables you to automatically reduce the
setpoint temperature on non-programmable thermostats via a 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
the control box. The NSB function works only in 4-wire installations (see
connection diagrams).
Heat Pump / Chiller logic selection (HP/CHILLER output) A
When connecting the HP / CHILLER output to an external heat/cooling source,
pay attention to the setting of the jumper responsible for the HP/CHILLER
output.
When the jumper is set to the “HP” position (default setting) then HP/CHILLER
output (volt free relay) is activated/deactivated each time the thermostat
starts (stop) heating or cooling.
When the jumper is set to the “CHILLER” position then HP/CHILLER output (volt
free relay) is activated/deactivated only when CB500 is in cooling mode
(please refer to chapter 7) and the thermostat starts (stops) cooling.
The factory setting of the jumper is HP
b) Turn OFF delay of the Heat/Cool source (BOILER and HP/CHILLER outputs)
B
This jumper sets the turn-off delay time of the BOILER and HP / CHILLER
control outputs.
When the jumper is set to “0 MIN” position (default setting) then BOILER and
HP/CHILLER output (volt-free relays) are deactivated immediately when
thermostats stop heating or cooling.
When the jumper is set to “15 MIN” position then BOILER and HP/CHILLER outputs
(volt-free relays) are deactivated 15 minutes after thermostats stop heating
or cooling.
PLEASE NOTE:
When the jumper is set to 15 minutes delay time you must ensure hydraulic flow
in the system when all actuators are closed. Use a bypass or differential
pressure valve.
BOILER control output
Boiler output – this is a volt-free output (COM / NO) that controls the heating system boiler. If any of the thermostats connected to the control box sends a signal for heating, BOILER output is activated after 3 minutes delay, giving permission for boiler to turn ON. If all thermostats connected to the control box stop sending the signal for heating, then BOILER output is deactivated – this is the signal for boiler to turn OFF (BOILER output can work with 0min or 15min delay – please refer to chapter 4b).
When the boiler output is activated, the LED shows a constant green light.
Heat Pump / Chiller control output
HP/CHILLER volt-free output (COM / NO) is specially designed to work with the
source of heating and cooling (Heat Pumps) or only cooling (Chillers).
If any of the thermostats connected to the control box sends signal for
heating or cooling, HP/CHILLER output is activated after 3 minutes delay,
giving permission for the connected heat pump or chiller to turn ON.
If all thermostats connected to the control box stop sending signal for
heating or cooling, HP/CHILLER output is deactivated, giving permission for
the connected heat pump or chiller to turn OFF (HP/CHILLER output can work
with 0min or 15min delay – please refer to chapter 4b). It can operate in
heating and cooling modes or only in cooling mode (please refer to chapter
4a).
When the Heat Pump / Chiller control output is activated, the LED shows a constant green light.
Heating/Cooling modes change input
When Heating/Cooling input is opened – that means CB500 works in the heating
mode.
When Heating/Cooling input has a link installed (bridged) – that means CB500
works in cooling mode.
NOTE: In cooling mode BOILER output is disabled. HP/CHILLER output is
enabled/disabled depends on the HP/CHILLER jumper setting (please refer to
chapter 4a). 
Dew point sensor input
If the installation is equipped with a dew point sensor, it should be connected into the DEW POINT input. When condensation is detected (DEW POINT contacts shorted), PUMP and HP/CHILLER outputs are switched off immediately to prevent floor damage. DEW POINT input is only active in cooling mode.
When the Dew point sensor input contact is closed, the LED shows a constant red light.
Pump/Valve control output
PUMP/VALVE output – this is a 230 V AC output that controls the pump and valve of the heating and cooling systems. If any of the thermostats connected to the CB500 send a heating/cooling signal – PUMP/VALVE output will be activated after 3 minutes. If all of the thermostats connected to the CB500 stop sending heating/cooling signal – the PUMP/VALVE output will be deactivated after 3 minutes.
When the Pump/Valve control output is activated, the LED shows a constant green light.
Warning: Before starting the installation, disconnect the 230V power supply!
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.
Thermostats connection
- Connecting EXPERT NSB, HTR or BTR series thermostats
- Connecting a 230 V thermostat to the CB500 control box (e.g. SQ610)
- Connecting ON/OFF battery-powered thermostat with voltage-free COM / NO output contacts (e.g. 091FL, RT310, RT510)
Note: In NSB, HTR, ERT, BTR product series follow interchangeable terminals description:
= SL = NSB
INSTALLATION
- Remove the top cover of the control box.
- Remove the appropriate piece of insulation from the wires.
- Connect the wires to the spring clamps according to the wiring diagrams. You can run the wires in the tunnel under control box housing.
- For safety use a fastening strap to prevent power supply/thermostat wires from falling out.
- Make sure that all the wires are properly connected, mount top cover and power up the control box – the red power indicator LED will be illuminated.
The connection between CB500 and CB500X
If there is a need to increase the number of zones of CB500 control box, it is
possible to connect the CB500 and CB500X units using the EXTENSION connector.
230V AC power is supplied only to the main CB500 control box. A maximum of two
CB500X extension modules can be connected to the EXTENSION input of the main
CB500 control box using a 4-wire cable (230V) – please pay attention to the
terminal markings. All thermostats connected to the CB500 or CB500X have
impact on the system module which controls the heat / cool sources in the main
CB500 control box. 
PLEASE NOTE!
THE “IN” INPUT IS A LOW VOLTAGE INPUT FOR THE CB500X CONTROL BOX EXTENSION
ONLY. DO NOT APPLY 230V AC VOLTAGE TO THE “IN” INPUT, BECAUSE CONTROL BOX WILL
BE DAMAGED!
WARNING! DO NOT connect a 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 the control box extension works as a standalone device.
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>