BN Thermic SMH-45 User guide

Thank you for purchasing a BNThermic product. Manufactured to a high standard, this product will, if used according to these instructions and properly
maintained, give you years of trouble free performance.

1. SAFETY INSTRUCTIONS

1.1 ELECTRICAL SAFETY

WARNING! It is the responsibility of the owner and the operator to read, understand and comply with the following:

You must check all electrical products, before use, to ensure that they are safe. You must inspect power cables, plugs, sockets and any other
connectors for wear or damage. You must ensure that the risk of electric shock is minimised by the installation of appropriate safety devices.
A Residual Current Circuit Breaker (RCCB) should be incorporated in the main distribution board. If in any doubt consult a qualified electrician.

You must also read and understand the following instructions concerning electrical safety.

 The Health & Safety at Work Act 1974 makes owners of electrical appliances responsible for the safe condition of those appliances and the

safety of the appliance operators. If in any doubt about electrical safety, contact a qualified electrician.

 Installation should always be carried out by a qualified electrician or a competent person in accordance with current electrical regulation.
 Ensure that the insulation of all the cables on the appliance is undamaged and safe, before connecting it to the power supply.
 Ensure that the cables are always protected against short circuit and overload.
 Regularly inspect the power supply cables and plugs etc. for wear or damage and check all connections to ensure that none are loose.
 Important: Ensure that the voltage marked on the appliance matches the power supply to be used and that a correctly rated fuse is fitted.
 DO NOT use worn or damaged cables, plugs or connectors. Immediately have any faulty item repaired or replaced by a qualified electrician.
 The unit should be protected by a suitably rated isolator and fuse or MCB.
 This heater is IP20 rated and is suitable for indoor or under cover use only.
 Do not attach this heater to an extension cord it must be hard wired in position.

1.2 GENERAL SAFETY INSTRUCTIONS

 Remove all packaging and store it away from children, check the package and heater for visible damage or tampering.
 Familiarise yourself with the applications and limitations of the heater.
 Ensure the heater is in good order and condition both physically and electrically before use. If in any doubt, do not use the unit and contact

your supplier.

 Only use recommended attachments and parts. To use unauthorised parts may be dangerous and will invalidate your warranty.
 Keep tools and other items away from the heater when it is in use.
 Keep children and unauthorised persons away from the heater, as it

gets hot.

 Disconnect from mains and allow to cool before attempting any cleaning

or maintenance.

X DO NOT use in areas where hazardous gasses or dusts may be

present.

X DO NOT disassemble the heater for any reason. This heater must be

checked by qualified personnel only.

X DO NOT use this heater to perform a task for which it has not been

designed.



WARNING! This heater is not equipped with a built in device to control

the room temperature. Do not use this heater in a small room if it is
occupied by people not capable of leaving the room on their own, unless
constant supervision is provided.



WARNING! Ensure you observe the safety distances and mounting
heights and there is no possibility of inflammable materials coming into
contact.

2. INTRODUCTION & SPECIFICATION

This heater produces a totally dry heat, no condensation, no gas, no fumes. It reaches maximum heat output within a minute from being turned on. It
is quick and easy to install reducing installation costs. Used with the CS-7 controller it can provide low / high heat or fan only settings.

Model

SMH-45

Power

4500W

Input supply

220-240V

Dimensions (W x D x H)

576 x 434 x 180mm

Weight

12.5kg

Recommended Mounting Height

3.0 - 3.5M

Safety Distance from Heater

1.5M

Optional Controller Model Number

CS-7

INSTRUCTIONS FOR:-

SURFACE MOUNT CEILING HEATER

SMH-45

REGISTER: PLEASE REGISTER THIS PRODUCT ONLINE TO ACTIVATE YOUR GUARANTEE AT

www.bnthermic.co.uk

IMPORTANT: PLEASE READ THESE INSTRUCTIONS, NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS, AND CAUTIONS.

USE THIS PRODUCT CORRECTLY, AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE

DAMAGE AND/OR PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY.

CS-7 Controller
(Optional Extra)

RST-TP Thermostat

(Optional Extra)

3. MOUNTING INSTALLATION

3.1 CEILING MOUNTING



IMPORTANT! Ensure that the ceiling is capable of taking the weight of the heater.

For optimum results do not fit in ceilings higher than 4m. Air is taken in through the large grille and discharged through the smaller grille. The air intake
and discharge areas must be kept completely clear for a minimum of 1.5m from the front of the heater. In an area using multiple units, heaters should
be spread to provide an even heat distribution.

Take out the internal heater by removing the end plate (disconnect the earth cable carefully) then remove the 10 screws on the front face and slide
out the heater assembly remembering which way around it goes. There are 20mm electrical knockouts on the side of the case and the removable
cover these might influence which way around you mount the case for easy neat wiring. Remember to leave plenty of clearance to allow the inner
heater assembly to be inserted inside the main case after installation.

Using the drawing above mark out the holes required to secure the heater case to the ceiling. Use the 4 x keyhole slots and an additional 2 holes
once installed to lock the heater in place. These addition 2 holes must be used to stop the possibility of the case sliding off its fixings.

Secure to the ceiling using suitable fixings (not supplied). Depending on how you mount the heater case it may be easier to do some of the electrical
connections before sliding the heater fully back into it.

3.2 DROP ROD MOUNTING

The heater has 4 x M8 threaded holes and 4 x M10 keyhole holes suitable for using M8 or M10 drop rod studding. If using M8 threaded holes fully
screw the studding into each hole and use a lock nut to stop it rotating and coming out. If using M10 studding a nut must be placed and tightened
above and below the case on each of the 4 studs to hold the case securely to the M10 drop rods. Use the diagram above to determine the spacing of
the drop rods. If you use drop rods you should be able to gain access to all the electrical connections without having to open the end cover of the
heater.

4. ELECTRICAL CONNECTIONS

4.1 230V SINGLE PHASE – Without controls.

Please make sure you have read the Safety instructions and that you are a suitably qualified electrician before continuing.
Drawings show connections inside the black terminal box on the outside of the heater. Do NOT use power tools to undo or do up terminal screws.
Please Note:- Specified cable sizes are for typical installations, correction factors may need to be used when determining actual cable sizes.

Standard Connection and Use
Use 2.5mm² 3 Core Mains Cable (see note above).

Connect Brown wire – Terminal 1 or L.
Connect Blue wire – Terminal 5 or N.
Connect Green / Yellow wire – Terminal E or

Ensure the 3 links are in position between terminals 1 and 2, 2 and 3, 3 and 4
as shown in drawing to the left.

If you wish to de-rate the heater from 4.5kW to 2.25kW remove the link
between terminal 3 and terminal 4. Ensure you tighten up the screws after removing the
link. See drawing to the right.

PLEASE CHECK ALL CONNECTIONS BEFORE TURNING ON AS INCORRECT

WIRING IS NOT COVERED BY THE GUARANTEE

4.2 230V SINGLE PHASE – With Thermostat (RST-TP).

Please make sure you have read the Safety instructions and that you are a suitably qualified electrician before continuing.
Drawings show connections inside the black terminal box on the outside of the heater and the inside of the RST-TP Thermostat. Other thermostats
may be used BUT they must be suitable for a 4.5kW load. Do NOT use power tools to undo or do up terminal screws.
Please Note:- Specified cable sizes are for typical installations, correction factors may need to be used when determining actual cable sizes.

Standard Connection using RST-TP Thermostat
Use 2.5mm² 3 Core Mains Cable (see note above)

Use 2.5mm² 4 Core Cable to connect the heater to the
thermostat (see note above).

Remove link in heater terminal box between
terminals 1 and 2.
Ensure the remaining 2 links are in position between terminals
2 and 3, 3 and 4 as shown in drawing to the left.

Mains Cable
Connect Brown wire – Terminal 1 or L.
Connect Blue wire – Terminal 5 or N.
Connect Green / Yellow wire – Terminal E or

Heater to Thermostat Cable – (Colours for reference only)
Connect Brown wire – Terminal 1 or L of heater and Terminal
3 of Thermostat.
Connect Grey wire – Terminal 2 of heater and Terminal 1 of
Thermostat.
Connect Blue wire – Terminal 5 or N of heater and Terminal 4
or N of Thermostat.
Connect Green / Yellow wire – Terminal E or of the heater and earth connection on Thermostat.

If you wish to de-rate the heater from 4.5kW to 2.25kW remove the link between terminal 3 and terminal 4. Ensure you tighten up the screws after
removing the link.

PLEASE CHECK ALL CONNECTIONS BEFORE TURNING ON AS INCORRECT WIRING IS NOT COVERED BY THE GUARANTEE

4.3 230V SINGLE PHASE – With CS-7 Controller (CS-7 Controller provides on / off / high heat / low heat / fan only settings).

Please make sure you have read the Safety instructions and that you are a suitably qualified electrician before continuing.
Drawings show connections inside the black terminal box on the outside of the heater and the inside of the CS-7 Controller.

Do NOT use power tools to undo or do up terminal screws.

Please Note:- Specified cable sizes are for typical installations, correction factors may need to be used when determining actual cable sizes.

Standard Connection using CS-7 Controller
Use 2.5mm² 3 Core Mains Cable (see note above).

Use 2.5mm² 5 Core Cable to connect the heater to the CS-7 Controller (see note above).
Remove any links that may be present in heater terminal box between terminals 1,2,3,4 or 5.

Mains Cable
Connect Brown wire – Terminal 1 or L.
Connect Blue wire – Terminal 5 or N.
Connect Green / Yellow wire – Terminal E or

Heater to CS-7 Controller Cable – (Colours for reference only)
Connect Brown wire – Terminal 1 or L of heater and Top Terminal L2 on right DP Switch of CS-7.
Connect Grey wire – Terminal 2 of heater and Centre switch Terminal 1 of CS-7.
Connect Blue wire (adding red or another suitable colour sleeve to both ends first) – Terminal 3 of heater and Terminal 1 on Left SP Switch of CS-7.
Connect Black wire – Terminal 4 of heater and Terminal 2 on left SP Switch of CS-7.
Connect Green / Yellow wire – Terminal E or of heater and earth connection on CS-7.

PLEASE CHECK ALL CONNECTIONS BEFORE TURNING ON AS INCORRECT WIRING IS NOT COVERED BY THE GUARANTE

4.4 230V SINGLE PHASE – With CS-7 Controller and RST-TP Thermostat.

Please make sure you have read the Safety instructions and that you are a suitably qualified electrician before continuing.
Drawings show connections inside the black terminal box on the outside of the heater and the inside of the CS-7 and RST-TP Thermostat Controllers.

Other thermostats may be used BUT they must be suitable for a 4.5kW load. Do NOT use power tools to undo or do up terminal screws.
Please Note:- Specified cable sizes are for typical installations, correction factors may need to be used when determining actual cable sizes.

Standard Connection using CS-7 Controller and Thermostat
Use 2.5mm² 3 Core Mains Cable (see note above).

Use 2.5mm² 6 Core Cable to connect the heater to the CS-7 Controller (see note above).
Use 2.5mm² 4 Core Cable to connect the CS-7 Controller to Thermostat (see note above).
Remove any links that may be present in heater terminal box between terminals 1,2,3,4 or 5.

Mains Cable
Connect Brown wire – Terminal 1 or L.

Connect Blue wire – Terminal 5 or N.
Connect Green / Yellow wire – Terminal E or

Heater to CS-7 Controller Cable – (Colours for reference only)

First remove the Brown link cable between L and COM on CS-7 and replace with a link between L and 2 (shown above by dark brown wire)

Connect Brown wire – Terminal 1 or L of heater and Top Terminal L2 on right DP Switch of CS-7.
Connect Grey wire – Terminal 2 of heater and Centre switch Terminal 1 of CS-7.
Connect Red wire – Terminal 3 of heater and Terminal 1 on Left SP Switch of CS-7.
Connect Black wire – Terminal 4 of heater and Terminal 2 on Left SP Switch of CS-7.
Connect Blue wire – Terminal 5 or N of heater and Top Terminal N2 on right DP Switch of CS-7.
Connect Green / Yellow wire – Terminal E or of heater and earth connection on CS-7.

CS-7 Controller to Thermostat Cable – (Colours for reference only)
Connect Brown wire – Bottom Terminal L1 on right DP Switch of CS-7 and Terminal 3 of the Thermostat.

Connect Grey wire –Terminal 1 of middle switch of CS-7 and Terminal 1 of the Thermostat.
Connect Blue wire – Bottom Terminal N1 on right DP Switch on CS-7 and Terminal 4 or N of the Thermostat.
Connect Green / Yellow wire – Terminal E or of CS-7 and earth connection of the Thermostat.

PLEASE CHECK ALL CONNECTIONS BEFORE TURNING ON AS INCORRECT WIRING IS NOT COVERED BY THE GUARANTEE

5. MAINTENANCE

Note: Before examining or carrying out any maintenance ensure the heater has cooled down and is disconnected from the mains supply.

The heaters are intended to operate for many years, problem free. All moving parts are factory lubricated and therefore should require no service.
Maintenance is limited to keeping both the inlet and outlet areas free from any accumulation of dust or any other foreign materials. This is especially
important immediately before the heating season. Any dust build up can be loosened using a brush and a vacuum cleaner applied to the airways to
ensure completed removal of any dust. When the heater is first turned on after cleaning an unusual odour may be noted this is due to the dust particles
which inevitably will be disturbed and will be burnt off from the heating element.

If in any doubt always consult a qualified electrician for advice.

6. AUTO CUT OUT

This heater is fitted with a semi-automatic safety device to prevent overheating. The device will isolate the heating element while the fan continues
to operate. Should this occur, disconnect the heater from the mains supply for a minimum of 5 minutes, check and remove any foreign materials
around the airways. If the heater fails to operate or the safety cut out operates again, turn off the heater and contact a qualified electrician.

NOTE: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior
notice.

IMPORTANT: No liability is accepted for incorrect use of this product.
WARRANTY: Your BN Thermic product is guaranteed for one year from date of purchase. We will repair

or replace at our discretion any part found to be defective. We cannot assume any consequential liability.
This guarantee in no way prejudices your rights under common law and is offered as an addition to
consumer liability rights.

REGISTER:

Activate your warranty by registering online at www.bnthermic.co.uk and retain this

installation data for future reference. S

MH-45INS-v02

This product conforms to EU Directive 2002/96/EC.
This appliance bears the symbol of the crossed waste bin. This indicates that, at the end of its useful life, it must not be disposed of as
domestic waste, but must be taken to a collection centre for waste electrical and electronic equipment. It is the user's responsibility to
dispose of this appliance through the appropriate channels. Failure to do so may incur penalties established by laws governing waste
disposal.

BN Thermic Ltd,
34 Stephenson Way,
Crawley, RH10 1TN

Tel: [phone]

Email: [e-mail]

Web: www.bnthermic.co.uk