United Automation Infresco-S 4kW Guide

Introduction
The Infresco-S 4kW is part of a family of controllers designed to provide energy saving when
used with Quartz Infrared Halogen Lamps or other Heating and Lighting Products. The ‘S’
model switches Soft Starts the load each time power is applied
The microcontroller-based unit incorporates zero-voltage switching and a soft-start function to
eliminate the lamps’ initial high inrush current – potentially increasing lamp life by as much as
30%. Installation of the unit is simple and once installed is relatively maintenance-free.
Product Features
Extends Lamp Life.
Soft-start/zero-voltage switch-off.
Low-cost.
Easy to install.
Applications: patio areas, smoking shelters, restaurants, warehouses, workshops and
garden lighting.
Installation
Important: Read carefully the following information before installing the unit.
The Infresco-S 4kW should be fixed securely using the four mounting holes accessible from
the front of the unit. Remove the lid to access the mounting holes. To ease installation, a
mounting template is provided on the next page to locate the 4 mounting hole centres.
IMPORTANT! The unit must be orientated with the cable glands facing down.
Wiring
It is recommended that installation and maintenance of this equipment should be done with
reference to the current edition of the I.E.E. wiring regulations (BS7671) by suitably
qualified/trained personnel. These regulations contain important requirements regarding
safety of electrical equipment (for International Standards refer to I.E.C/ directive IEC950).
Warning! Ensure all earth wires are connected to maintain earth continuity to the lamp
fittings. Isolate the mains supply before wiring this unit.
The unit is fitted with two cable glands. Only one cable should be fitted per gland to maintain
the unit’s IP rating. When fitting two lamps, refer to Wiring Diagram for an alternative wiring
configuration using a junction box.
The mains supply connects to the terminal block marked ‘LINE’. Connect the supply LIVE to
the ‘L’ terminal, NEUTRAL to the ‘N’ terminal and EARTH to the ‘E’ terminal.
The lamps connect to the terminal block marked ‘LOAD’. Connect the load LIVE to the ‘L’
terminal, NEUTRAL to the ‘N’ terminal and EARTH to the ‘E’ terminal. If two lamps are to be
fitted they must be wired in parallel.
Check all wiring - particularly the line and load connections and make sure the cable glands
are tightened.
Mounting Template
Commissioning
Set the on-time preset (VR1) to a time period of between 1 and 40 minutes. VR1 is located at
the top of the printed circuit board as shown above. Replace the lid and switch on the mains
supply to the unit. Press the push-button on the front of the unit to switch the lamps on.
Technical Specification
Supply Voltage 230VAC +/- 10% 50 Hz
Switching Capacity 4kW Max.
Current Consumption (control circuit) 50mA
Terminals 2.5mm
2
Rising Clamp
Operating Temperature -20 to 40°C
Protection Rating IP65
Gland Diameter Max Cable Entry 2.5mm²
Enclosure Dimensions (WxLxH) 100x100x60 (mm)
Mounting Template
Use this template to locate the 4 mounting hole
centres prior to drilling.
IMPORTANT!
The drilling of any additional holes will
immediately void the warranty of this unit.
The unit must be orientated with the cable
glands facing down.

INFRESCO-T™
Users & Installation Manual
For
Infresco S 4kW
RoHS Compliant
Directive
2002/95/EC
X20034 Issue 3 27/10/11
Wiring Diagram
UNITED AUTOMATION LIMITED
1 Southport Business Park Tel: [phone] – 516500 Main
Kew Tel: [phone] - 516516 Sales
Southport, PR8 4HQ Fax: [phone] – 516501
ENGLAND [e-mail]
Additional Information when using remote switch:
When using a remote switch it is important than an additional gland (Not Supplied) is used to
ensure the IP rating is maintained.
The rear of the enclosure containing the pcb, This will need to be removed before attempting to
fit the additional gland. Remove the 4 fixing screws and remove the pcb. You can then knock
out the knockout and fit the additional gland as shown above. This should be done very
carefully using a screwdriver. Refit the pcb.
Remove the link that is fitted into the INPUT/COM terminals and wire in the switch wires
Once the additional gland has been fitted the units should be mounted as shown above.
This is the only time the unit should be mounted in this way. If the additional switch is not
being used then the unit must be fitted with the gland facing down.
Once the unit is wired, the lid should be fitted as shown