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System X – Surface-Mount Ceiling Heaters

SMH Surface-Mount Ceiling Heater
  • Control up to 12 surface mount ceiling heaters from a single point – ideal for shops
  • All connections by Cat5 cable for super quick and error free installation
  • Can be connected to any heater in the System X range – any combination – any sequence
  • New model available in a smart black finish (XS-30B)

Range & Prices

The prices shown are list prices and perfectly safe to use for budget purposes. Contact your electrical wholesaler for final prices.


Model kW List Price
XS-30 3.0 £567.00
XS-30B 3.0 £567.00
XS-45 4.5 £609.00
XS-60 6.0 £806.00
Multiple XS-30 heaters suspended from the ceiling providing warmth to a DIY store

Multiple XS-30 heaters suspended from the ceiling providing warmth to a DIY store

Control Components

Type Description Model

List Price

Controller With thermostat
On/off/high/low/fan only settings
Open window detection


Controller With tamper resistant thermostat
On/off/high/low/fan only settings
Open window detection


Controller Without thermostat
On/off/high/low/fan only settings


Controller With digital programmable thermostat
Optimum start feature


Controller For use with volt-free signal from BMS (for 230V signal a VI Interface is required) CX-BMS


Sensor Optional remote sensor for use with CX1, CX2 or CX6 CXS


Cable Cat5 terminated 5m DX05


Cable Cat5 terminated 10m DX10


Cable Cat5 terminated 10m (Black) DX10B


Cable Cat5 terminated 20m DX20


Joiner Cat5 cable joiner JX1


Auxiliary Control Components




List Price

Programmable Thermostat

Use with CX-3 for 7-day programmable control

Optimum start option




7-day programmable timer for use with CX1 or CX2



How it Works

System X surface mount ceiling heaters provide comfort or background heat in a wide variety of commercial buildings.  They are particularly well-suited to heating shops.

A system will include a controller and up to 12 individual heaters.  The control daisy chain is connected using Cat5 cables ensuring the quickest possible installation time.  Power is introduced to each heater individually with the controller taking its power from the first heater in the chain.

A unique feature of System X is that any style of heater from the range can be incorporated into a control daisy chain.  For example, an overdoor heater could be added to a surface mount ceiling heater system.  Heaters can be connected in any combination and any sequence.


Four surface mount fan heaters controlled from a single controller

Technical Specification

Colour: White RAL9016 or Black (XS-30B)
Finish: Epoxy polyester powder coating
Construction: 0.9mm steel case
Fan Assembly: Tangential fan with low noise aluminium fan blades
Shaded pole high performance motor
Factory lubricated bearings (servicing not required)
Heating Element: High quality nickel-chrome resistance wire supported by ceramic plates and fitted with an automatically resetting over-temperature device

Up to 12 heaters can be connected to a single controller in any combination or sequence.  Control connections are by Cat5 cable

Installation Keyhole screw fixing to conventional ceiling or suspension from drop rods (4 x M6 threaded holes provided)
Recommended mounting heights 2.4m to 4m above floor level (see table below)
Guarantee 1 year

Physical data

Model Width (mm) Depth (mm) Height (mm) Weight (kg)
XS-30 575 392 152 8.0
XS-30B 575 392 152 8.0
XS-45 575 392 152 11
XS-60 575 592 152 12.5

Performance Data

XS Surface-Mount Ceiling Heaters
Model Volts kW Airflow (m³/h) dB*@ 2m Recommended Mounting Height (m)
XS-30 230 3.0 245 56 2.4 – 3.0
XS-30B 230 3.0 245 56 2.4 – 3.0
XS-45 230 4.5 345 60 3.0 – 4.0
XS-60 230 6.0 490 58 2.4 – 3.0

*Noise levels are factory tested not laboratory tested

Technical Specifications – Controls


Maximum number of heaters controlled: 12
Type of heaters controlled: any heaters from the System X range in any sequence
Electrical Supply: taken from heater via Cat5 cable
Heater settings: on/off/high heat/low heat/fan only
Built-in adjustable thermostat range: 0 to 30˚C
Connection to first heater in group: Cat5 cable
Mounting: surface mount
Dimensions: 120mm x 80mm x 40mm

Special Feature: Open window detection (user selectable)


Model: CX2

As CX1 but with a tamper resistant built-in thermostat


Model: CX3

As CX1 but without built-in thermostat or open window detection


Model: CX6

As CX1 but with:

7-day programmable timer
Temporary override
Temporary lock
Optimum start for enhanced economy (user selectable)

Without open window detection


Model: CX-BMS

As CX1 but without manual or thermostat control
Requires a volt-free signal from a BMS to switch heater on and off

Can operate with a 230V signal via a VI Interface


Model: CXS

Remote mounted sensor for use with CX1, CX2 or CX6 controller
Overrides the controller’s built-in air sensor
Recommended maximum cable length between controller and sensor: 20m
Mounting: surface mount
Dimensions: 80mm x 80mm x 35mm

CXS Optional remote temperature sensor

Pre-terminated Cat5 Cables

DX05: 5m
DX10: 10m
DX10B (black): 10m 
DX20: 20m
JX1: Cat5 Joiner / Coupler – Click fit (Joins two Cat5 cables together should you require longer lengths)

DX10 Cat5e cable
DX10B Cat5e Black Cable Black

Heater Selection

If you would like the experts at BN Thermic to select a suitable heating for your application, please click here to access our enquiry form.  Simply provide as much information as you have available and we will respond with a detailed proposal.

Enquiry Form

In simple terms the output of the System X installation must be greater than the heat losses from the building during periods of cold weather.  A small amount of heat is lost through the walls, ceilings and floors with more significant losses through windows and doors.

To estimate the heat loss from your building you may like to use our heat calculation tool

Heat Calculator

The estimated heat loss figure is the absolute minimum kW output that you should consider installing.  We would suggest adding approximately 50% to this figure to allow for an acceptable warm up time in cold conditions as well as making allowances for exceptional weather conditions and possible errors in the original data used in the estimate.

Having established the minimum kW output, select the minimum number of heaters needed to meet this requirement.