BN Thermic SCHG-45T User guide

INSTRUCTIONS FOR:-

600 x 600 CEILING GRID HEATER

SCHG-45T

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.

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 locate the heater directly below the power outlet.
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! Ensure you observe the safety distances and

mounting heights and there is no possibility of inflammable

materials coming into contact.

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

www.bnthermic.co.uk

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
and has an internal thermostat. 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

SCHG-45T

Power

4500W

Input supply

220-240V

Dimensions (W x D x H)

594 x 594 x 153mm

Weight

10kg

Recommended Mounting Height

2.5 - 3.0M

Safety Distance from Heater

1.5M

Optional Controller Model Number

CS-7

3. MOUNTING INSTALLATION

3.1 CEILING MOUNTING

The heater is intended for installation in a suspended ceiling mounted within or on the 'tee' bar supports. For optimum results do not fit in ceilings
higher than 3m. As air is only introduced through the front of the unit the heater may be sighted anywhere. 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.

❑

IMPORTANT! A minimum clearance of 205mm is needed between the bottom of the false ceiling and the original roof/ceiling to allow
installation of the heater.

❑

IMPORTANT! DO NOT cover the heater case with any insulation. It must be left with nothing touching the metal case.

❑

IMPORTANT! DO NOT use plastic type diffusers as these may be damaged by the heat.

❑

IMPORTANT! Ensure that the mounting surface / ceiling supports are capable of taking the additional weight of the heater there are 2 eye
hooks supplied with the heater that should be used if additional support of the heater is required.
When using the diffuser the four Z brackets provided should be attached to the side of the heater to enable the heater to be supported by the 'tee'
bar and immediately above the diffuser.

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

Ensure the 3 links are in position in the Control Box as shown in drawing to the
left. Links should be between terminals 1 and 2, 3 and 4, 4 and 5.

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

De-Rating the Heater

If you wish to de-rate the heater from 4.5kW to 2.25kW remove the link between terminal 4 and terminal 5 in
the Control Box.
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.

CS-7 Controller
(Optional Extra)

Heater de-rated

to 2.25kW

4.2 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 6 Core Cable to connect the heater to the CS-7 Controller (see note above).
Remove any links that may be present in heater control box between terminals 1,2,3,4 or 5.

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

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

Move the Dark Brown link cable from the centre switch terminal 1 to the centre switch terminal 3 (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 Terminal L1 on right DP Switch of CS-7.
Connect Red wire – Terminal 3 of heater and Centre Switch Terminal 1 of CS-7.
Connect Black wire – Terminal 4 of heater and Terminal 1 on Left SP Switch of CS-7.
Connect Yellow wire – Terminal 5 of heater and Top 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 GUARANTEE.

5. CHANGING MODE OF OPERATION

The heater has two modes of operation to suit different
applications.

These two modes are selected by a switch on top of the heater
near the Power Supply Box.

Mode I

With the switch on the top of the heater in the “I” position both

the heater elements and the fan turn on and off with the
thermostat. This mode is best used when using the heater as a
space heater but may give long periods of on / off switching
when the heater is used in a confined space.

Mode II

With the switch on the top of the heater in the “II” position the

fan runs continuously and only the heating elements go on and
off with the thermostat this will tend to improve the response
time of the thermostat as air is always being moved around.
If you use this heater in a confined space we recommend you
use this mode of operation.

BN Thermic Ltd,

34 Stephenson Way,

Crawley,

RH10 1TN

Tel: [phone]

[e-mail]

www.bnthermic.co.uk

6. CONTROL

Standard temperature control is by adjusting the electronic thermostat knob located on the front of the heater.
Twist clockwise to increase temperature set point
Twist Anti-clockwise to decrease temperature set point.

7. 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.

8. 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.

SCHG-45TINS-v02-1

WEEE REGULATIONS:

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.