BN Thermic PROSTAT3 User manual

Thank you for purchasing a BN Thermic 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. Please ensure instructions
remain with your customer for their reference.
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,socketsandanyotherconnectorsforwear
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 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 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 thermostat is suitable for indoor or outdoor use.
1.2 GENERAL SAFETY INSTRUCTIONS
✓Remove all packaging and store it away from children.
✓Familiarise yourself with the applications and limitations of the thermostat.
XDO NOT use in areas where hazardous gasses or dusts may be present.
XDO NOT disassemble the thermostat for any reason. This thermostat must be checked by qualified personnel
only.
XDO NOT use this thermostat to perform a task for which it has not been designed.
INSTRUCTIONS FOR:-
TAMPER-RESISTANT THERMOSTAT
Model :- PROSTAT3
REGISTER: PLEASE REGISTER THIS PRODUCT ONLINE TO ACTIVATE
YOUR GUARANTEE AT www.bnthermic.co.uk
IMPORTANT: PLEASEREAD THESEINSTRUCTIONS, NOTETHE SAFEOPERATIONALREQUIREMENTS,
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
ANDWILLINVALIDATE THE WARRANTY.

2. INTRODUCTION & SPECIFICATION
The PROSTAT3 thermostat is a highly accurate
electronic temperature controller suitable for heavy
duty use in public areas. Optional remote sensors are
available if temperature control is required away from
the controller.
Applications
32A Industrial heater control where tamper resistant
temperature control is required.
Typical applications include Shops, Schools,
Restaurants, Warehouses, Church Halls and
Workshops.
3. MOUNTING / ELECTRICAL CONNECTIONS
Do NOT use power tools to undo or do up electrical terminal screws or front cover screws.
Please Note:- This Thermostat will only switch a 32A load using a Triac, if you require it to switch a greater load a
contactor MUST be used in the circuit (contactors available from BN Thermic).
1) Remove front cover by undoing the
four corner screws. Remove lid with
care as there is a flexible cable link
between the switch and circuit board.
2) Use the 4 holes in the corners to
attach the controller to a suitable
surface as these will maintain the
IP65 rating.
3) Drill box to accept cable glands. We
supply 2 x M20 cable glands with
each controller these require a 20mm
hole to be drilled for them. If you have
to drill additional holes remember to
waterproof these holes or use
suitable IP rated cable glands to
maintain the IP65 waterproof rating
(should you require).
4) Connect wiring as shown in diagram
below.
5) Do NOT use power tools to tighten up
the terminal screws but ensure the
screws are correctly tightened.
Model
PROSTAT3
Input Supply
220-240V 50Hz ac
Maximum Power
7200W 32A
Contacts
Single pole, single throw
Dimensions (W x H x D)
125mm x 140mm x 78mm
Ingress Protection
IP65
Weight
0.32kg
Temperature Ranges
0ºC to 20ºC or 10ºC to 30ºC
(Selectable)
Differential
1ºC
Sensor
Integral ‘black bulb’
Special Features
Window opening option.
Supplied with 2 x M20 cable
glands.

GURATION.
4. CONFIGURATION.
1. Ensure the metal link is present in the small green terminal block marked J2.
2.Select which temperature range you require by using switch No 1.
ON = 0ºC to 20ºC and uses the white rotary knob to set the temperature.
OFF = 10ºC to 30ºC and uses the black rotary knob to set the temperature.
3. Decide if you require window opening (see section 7)
4. Fit cover securely using all 4 corner screws.
When the power is turned on, the thermostat will start to turn the heating ON /
OFF maintaining temperature set point.
NOTE:- Switch’s 3 - 6 are disabled and have no function.
5. USING WITH A REMOTE VOLT-FREE TIMER OR BMS.
The time switch takes over controlling when the thermostat operates.
1. Remove the metal link in the small green terminal block marked J2.
2. Connect the PROTIM-7 so that one wire runs between S-in to one of the green J2
terminal blocks and another wire between S-out and the other J2 green terminal as
shown in picture above. DO NOT CONNECT THESE 2 WIRES TO A 240V SUPPLY.
Please note there is only 5V DC present so doorbell wire can be used to connect
between the controllers.
3. Wire PROTIM-7 to suitable fused supply as per timer’s instructions.
BMS –Building management system
The controller can also be connected to a zero-volt relay controlled by a building
management system. When the relay is open thermostat is OFF, when relay is closed
thermostat turns ON.
Optional PROTIM-7
7 Day Time Switch
Back view of the
PROTIM-7 timer

6. INSTALLING A REMOTE SENSOR.
If you wish to place the thermostat in a separate area such as an adjacent room or cupboard from the room you are
heating, a remote sensor will be required to detect the temperature.
There are three different sensors available.
1) Black Bulb Sensor (Part No. BBS) –Used for detecting the infrared heat given out by your heaters.
2) Black Bulb Sensor IP Rated (Part No. BBSIP) –Used for detecting the infrared heat given out by your heaters but
is rated IP65 for use in damp, wet conditions.
3) Air Sensor (Part No. CXS) –Used for detecting the air temperature.
Connecting a Remote Sensor
1) Disconnect the thermostat’s built-in sensor wires making sure the wire ends cannot come into contact with anything
live by insulating them.
2) Using any insulated copper wire connect the remote sensor to the green sensor terminals marked J3 on the circuit
board as per picture.
7. WINDOW OPENING.
There is an energy saving feature built into this controller if required. Should the
temperature suddenly drop indicating that an outside window or door is open, the heaters
will turn off for a short period of time before returning to full power.
This may be useful if you are using a single heater in a small room. By default, this function
is OFF but if you require it, just move switch No.2 to the ON position on the circuit board
when setting the thermostat.
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.
REGISTER: Activate your warranty by registering online at www.bnthermic.co.uk
and retain this installation data for future reference.
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. PROSTAT3 -v01-1
Thisproduct conformsto EUDirective2002/96/EC.
Thisappliancebears thesymbol of the crossed waste bin.Thisindicatesthat,atthe end of itsusefullife,itmustnot
be disposedofasdomesticwaste,butmustbe taken toacollection centrefor waste electricalandelectronic
equipment.Itis theuser'sresponsibility to disposeofthisappliance through theappropriatechannels. Failure to do
somayincurpenaltiesestablishedby laws governingwastedisposal.
BN Thermic Ltd,
34 StephensonWay,
Crawley,RH10 1TN
Tel:[phone]
Email: [e-mail]
Web:www.bnthermic.co.uk
BBSIP Sensor
BBS Sensor
CXS Sensor