United Automation INFRESCO P User manual

X20114
INFRESCO P 4kW Issue 2
User manual Date 11/06/18
Page 1 of 9
KEY FEATURES
•Energy saving:-
oOnly provides heat when people are present.
•Extends lamp life.
•Temperature sensor:-
oLamps inhibited when ambient temperature exceeds set point.
•Soft-start/zero-voltage switch-off.
•Low-cost.
•Easy to install.
•Power ON (Blue) & Heater ON (Red) LED indication

TECHNICAL SPECIFICATION
Supply Voltage 230VAC +/- 10% @ 50/60Hz
Switching Capacity 4kW Max.
Detection Range 5 metres
Detection Angle 100°
Temperature Set Point 1 to 60°C
Lamp On-Time 5 Minutes (fixed)
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) 100 x 112 x 55 (mm)
Introduction
The infresco-P 4kW is part of a family of controllers designed to provide energy saving when used with Quartz Infrared
Halogen Lamps. The ‘P’ model has a built in PIR sensor allowing the lamps to automatically switch on only when people
are present. In addition to the PIR, a temperature sensor monitors the outside temperature and inhibits the lamps when
the temperature exceeds a pre-determined set point of between 1°C and 60°C.
The microcontroller-based system 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%. The lamps are switched on for a fixed time
period of 5 minutes. This period is reset each time the PIR detects any further movement. Installation of the unit is simple
and once installed is relatively maintenance-free
Installation
Important: Read carefully the following information before installing the unit.
The passive infrared sensor (PIR) fitted in this unit detects changes of infrared energy through the Fresnel lens on the
front face of the unit. The detection area and range depend significantly on its mounting position.
The PIR not only detects movement of the human body, but also other heat sources similar to the human body. To
prevent false activation, the unit must not be located directly facing or in close proximity to the heater lamps. Avoid
locating the unit near to heating flues/exhausts, air conditioning units, moving trees/bushes and reflective surfaces.
Note: The PIR cannot detect the presence of a human body that is not moving.
To prevent malfunction of the PIR sensor, avoid subjecting it to rapidly-changing temperatures, strong shock or vibration
or high humidity and temperature.

WIRING DIAGRAM

PIR DETECTION AREA
Horizontal
Vertical
Positioning
The Infresco-P 4kW can be wall or ceiling-mounted. For wall mounting, the unit should be positioned 1-3 metres high.
The diagram above shows the PIR’s detection area.
The unit 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! When wall mounting, the unit must be orientated with the cable glands facing down.

MOUNTING TEMPLATE
Use these template dimensions to locate
the 4 mounting-hole centres prior to drilling.
IMPORTANT!
Drilling of any holes through the
enclosure will immediately invalidate the
warranty of the unit.
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! Isolate the mains supply before commencing any work on the unit. Failure to do so could result in
serious injury or fatality.
The unit is fitted with two cable glands. Only one cable should be fitted per gland to prevent degrading the unit’s IP
rating. See ‘Wiring Diagram’ on the next page 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.
Warning! Ensure all earth wires are connected to maintain earth continuity to the lamp fittings.
Check all wiring and make sure the cable glands are tightened.
Commissioning
Turn the set point temperature preset (VR1) fully clockwise to select ‘walk test’ mode.
VR1 is located at the top of the printed circuit board as shown opposite.
Replace the lid and switch on the mains supply to the unit. The controller will remain idle for 60 seconds to allow the PIR
sensor to stabilise.
After 60 seconds, the detection area can be walk tested to verify the PIR’s coverage. Each time the PIR detects sufficient
movement, the lamps switch on for 5 seconds.
Note: Each time the lamps switch off, the PIR is inhibited for 5 seconds to prevent changes in infrared energy,
given off by the lamps, from causing a false activation.
Once the detection area has been verified, adjust the set point temperature as required. This will automatically disable
‘walk test’ mode. The lamp on-time is fixed at 5 minutes.
Note: If the ambient temperature exceeds the set point temperature, the lamps are inhibited.

TROUBLESHOOTING
Problem: Lamps do not switch on.
Solution:
Check the LINE and LOAD wiring connections to the unit and ensure the mains supply is switched on.
The ambient temperature may have exceeded the set point temperature. If necessary, increase the set point
temperature (VR1).
Check the lamps/Lamp fittings.
Contact your supplier.
Problem: Lamps do not switch off.
Solution:
Ensure nobody enters the detection area for 5 minutes. This will allow the 5 minute on-time to expire.
The PIR might be continually being re-triggered due to false activations. Mask the PIR lens and wait 5 minutes. If
the lamps switch off after 5 minutes, the PIR is receiving false activations. See section ‘Installation’.
Contact your supplier.

RECOMMENDATION & SAFETY REQUIREMENTS
SUPPORTING DATASHEETS FOR PRODUCTS AND APPLICATIONS
Other documents, which ma be appropriate for our applications, are available on request.
CODE IDENTITY DESCRIPTION
X10255 SRA Safety requirements: Addressing the Low Voltage Dire tive (LVD) in luding, Thermal
data/ ooling, Live parts warning Earth requirements and Fusing re ommendations.
P01.1 COS UAL Conditions of sale.
NOTE:
It is recommended that installation and maintenance of this equipment should be carried out b suitabl
qualified personnel, with reference to the current edition of the I.E.E. Wiring Regulations BS7671. The
regulations contain important requirements regarding the safet of electrical equipment.
ELECTROSTATIC DISCHARGE (ESD)
This product range has been identified has requiring protection from electrostatic discharge (ESD). The include
integrated circuits (IC’s) that ma be damaged or degraded if mishandled. The are much less vulnerable when built
in-circuit and suitable and sufficient precautions are taken when being handled.
To address this matter, when the products are sold separatel the are protected in an ANTI-STATIC pol eth lene bag.
Appropriate care should be taken when handling the units for installation.
Further supporting data is available on request or on our website:- SWP05-06 – A guide to ESD
Not for general waste

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PRODUCT APPLICATIONS
•Patio areas.
•Smoking shelters.
•Restaurants.
•Warehouses.
•Workshops.
•Garden lighting.
•Livery stables