Herschel 3kW Variable Power Controller User manual

Original instructions covering the 3kW Variable Power Controller produced

112021 onwards.

3kW Variable Power Controller

INSTALLATION & OPERATING INSTRUCTIONS

ELECTRICAL EQUIPMENT:

Waste electrical products should not be disposed of with household waste. Please recycle

where facilities exist.

IMPORTANT NOTICE TO PURCHASER:

Before utilizing the product, user should determine the suitability of the product for its intended use.

HERSCHEL INFRARED LTD expressly disclaims the implied warranties and conditions of merchantability and

fitness for a particular purpose. In no case shall HERSCHEL INFRARED LTD be liable under any legal theory,

including but not limited to contract or strict liability, for any direct, indirect special, incidental or

consequential damages resulting from product use.

IMPORTANT SAFETY PRECAUTIONS

READ THESE INSTRUCTIONS CAREFULLY AND

KEEP FOR FUTURE REFERENCE

Failure to observe these instructions will invalidate the warranty.

WARNING

TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK OR INJURY:

• Switch off the mains supply before commencing any installation or service work.

• The controller can be mounted recessed in a wall, provided the IR load is rated

below 2KW. For a load rated above 2KW, the unit must be mounted proud of the

wall to ensure adequate cooling.

• The controller should be connected according to the wiring diagram below, using

cables suitable for the maximum load rating of the IR heater load.

• It is recommended to use a suitably rated semi-conductor protection fuse or Z-

type MCB to protect the internal triac device (max rating 20Amps).

• This unit MUST be EARTHED

• Installation must be carried out in accordance with the current IEE regulations

(BS7671)

IMPORTANT

• Ensure all earth wires are connected to maintain earth continuity.

• Check all wiring and make sure the cable glands are tightened.

SAVE THESE INSTRUCTIONS.

INTRODUCTION:

The 3kW Variable Power Controller is a compact, low-cost, enclosed unit for

controlling the power from 0-100% for Herschel infrared space heaters. The controller

is housed in a metal double-gang, wallmounted patress enclosure & has integral Radio

Frequency Interference suppression.

FEATURES:

• Integral RFI network for EMC compliance.

• On/Off switch, when turned fully anti-clockwise

• Plug-in power connector block.

• Wall mounting.

• Rugged and compact.

• Designed to maximise thermal dissipation.

• Simple wiring via knockouts in case.

INSTALLATION:

When wall mounting, the unit must be orientated with the cable glands facing down.

SPECIFICATIONS:

Triac limiting RMS. On state cycle 25A

Peak one cycle surge @ (10mS) 320A

Min. operating current 200mA

Max. forward volts drop at 10A 1.5V

Max. load at 30ºC ambient 13A

Max. unit operating temperature 65ºC

Isolation voltage 2500V RMS

I2t limiting value for fusing 112A2s

Unit limiting RMS. On state current 13A

Mains supply tolerance, +/- 10% 230V or 110V AC

Mains frequency 50/60Hz

Unit storage temperature range 0 TO +65ºC

DIMENSIONS & WEIGHT:

• 140mm (W) x 80mm (H) x 44mm (D)

• Potentiometer Shaft diameter 6.3mm

• Potentiometer Bush length 7mm

FUSING:

The unit comes with an integral 8A Protection fuse (32mm FF type). On initial “switch”

on, some loads may need an increased Factor of Safety for Unit and/or Device

protection.

NOTE:

It is recommended that installation and maintenance of this equipment should be

carried out by suitably qualified personnel, with reference to the current edition of the

I.E.E. Wiring Regulations BS7671. The regulations contain important requirements

regarding the safety of electrical equipment.

WARRANTY:

Register your product here: https://www.herschel-infrared.co.uk/customer-

service/warranty-registration/

The 3kW Variable Power Controller is guaranteed against failure due to faulty

materials or workmanship for two years from date of purchase. In the unlikely event

of failure of the unit within this time, the unit must be returned to the supplier for

repair or replacement. The guarantee is invalid if the correct installation instructions

as given in this leaflet have not been adhered to. Refer to Herschel Infrared Ltd’s

warranty policy for full details. See https://www.herschel-infrared.co.uk/ Note your

serial number for future reference:

Herschel 3kW Variable Power Controller User manual

Herschel 3kW Variable Power Controller User manual

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