DANLERS Limited, Vincients Road, CHIPPENHAM, Wiltshire, SN14 6NQ, UK.
Telephone: +44 (0)1249 443377 Fax: +44 (0)1249 443388
E-mail: sales@danlers.co.uk Web:
www.danlers.co.uk
Company Registered Number 2570169 VAT Registration Number 543 5491 38
Products available from DANLERS
• PIR occupancy switches • Daylight linked dimmers • Manual high frequency dimmers
• Photocells • Radio remote controls • Time lag switches • Outdoor security switches
• Dimmers • Heating, ventilation and air-conditioning controls • Bespoke / O.E.M. products
Please call for more information or a free catalogue, or visit our website.
This product conforms to BS EN 60669-2-1.
Please ensure the most recent edition of the appropriate local wiring regulations are observed
and suitable protection is provided e.g. 6 amps over current, 1kV over voltage. Please ensure
that this device is disconnected from the supply if an insulation test is made.
This product is covered by a warranty which extends to 5 years from the date of manufacture.
Precautions and Warranty
Installation notes
Ceiling Surface PIR occupancy switches
CESF PIR
DANLERS ceiling surface passive infra-red occupancy switches (CESF
PIR) can be ceiling mounted on a square pattress box (DANLERS
code: PABO).
The CESF PIR incorporates a passive infra-red quad sensor to detect
movement of a warm body within its detection zone (diagram A) and
a photocell to monitor the ambient light level.
Upon detecting movement, if the ambient light is dark enough, the
CESF PIR will switch the load on. The ambient threshold can be set
by the user to between approximately 100 lux and infinite lux (photocell
inactive) via the LUX adjuster (diagram B).
If no more movement is detected within a pre-selected time, then
the CESF PIR will switch the load off. This time lag can be set via
the TIME adjuster to 10 seconds, 20s, 40s, 1 minute 15 seconds,
2m 30s, 5m, 10m, 20m or 40 minutes (diagram B).
CESF PIR also incorporates a sensitivity adjuster, labelled ‘SENS’,
to reduce the range and sensitivity of detection (diagram B).
Loading
DANLERS CESF PIR units can switch up to 6 amps (1500W) of:
• Fluorescent lamps, high frequency or switch start
• Incandescent or mains halogen lamps
(recommended with integral safety fuse)
• Electronic or wire wound transformers.
They can also switch up to:
• 1 amp (250W) of metal halide lamps or fans.
14/05/10
INS944 CESF PIR
Variants
As DANLERS design and manufacture in the UK, variants can be supplied,
coded by the following suffixes and applied in this order:
• 12V or 24V
12V or 24V (ac or dc) operation
• VF
Volt Free contacts
• GOLD or LG
Gold or Logic Gold contacts
• NC
Normally Closed contacts
Variant details are covered in an enclosed addendum sheet if applicable.
Troubleshooting
The load will not switch on:
• The LUX adjuster is set too low and is inhibiting the switch.
• The SENS adjuster is set too low.
• The moving body is not emitting more IR than the background.
(Person wearing insulating clothing in a warm environment)
• Person is too far from the PIR switch, see detection diagram.
• Person is moving unusually slowly (perhaps when testing).
The load switches on when nobody is present:
• Heater causing infra-red variations in a cold small room or ceiling void
drafts, fans, or sealed doors causing air movement.
Reduce the sensitivity adjuster or consider using the CESF PIR 2D
double detection version.
• Please contact DANLERS for further technical support.
