DL..A, DL..K · Edition 02.22
EN-7
8 teCHnICAL DAtA
8.1 Ambient conditions
Enclosure to IEC 60529: IP 54 (IP 65).
Permitted ambient temperature in operation:
DL..A, DL..K: -20 to +80°C (-4 to +176°F),
DL..T: -40 to +60°C (-40 to +140°F).
Storage and transport temperatures:
-20 to +40°C (-4 to +104°F).
Micro switch to EN 61058-1.
Gas types: air or flue gas, no flammable gases, no
aggressive gases.
Icing, condensation and dew in and on the unit are
not permitted.
Safety class II to VDE 0106-1.
This unit is not suitable for cleaning with a high-pres-
sure cleaner and/or cleaning products.
8.1.1 Pressure switch with nBR diaphragm
Long-term use in the upper ambient temperature range
accelerates the ageing of the elastomer materials and
reduces the service life (please contact manufacturer).
Ozone concentrations exceeding 200 μg/m
3
accel-
erate the ageing of elastomer materials and reduce
the service life.
8.2 Mechanical data
Medium temperature = ambient temperature.
Max. inlet pressure p
max.
= withstand pressure,
switching differential, see page 5 (5.1 Adjusting
rangeDL..A, DL..K).
Diaphragm pressure switch, NBR, silicone-free.
Housing: glass fibre reinforced PBT plastic with low
gas release.
Weight: DL..A: 190 g (6,7 oz), DL..K: 220 g (7,8 oz)
Recommended tightening torque:
Component
tightening
torque
[ncm]
Cover screws
65
M16 x 1.5 cable gland
50
Clamping terminal screws
80
Rp 1/8 connection on upper
housing section
250
Rp 1/4 (1/4" NPT) connection on
lower housing section
600
8.3 electrical data
Line entrance: M16 x 1.5 (1/2" NPT conduit),
clamping range: diameters of 4 to 10 mm.
Type of connection: screw terminals,
cable diameter: 0.5 to 1.8 mm (AWG 24 to
AWG 13).
8.3.1 switching capacity
U
I
(cos φ = 1)
I
(cos φ = 0.6)
DL
24–
250 V AC
0.05–5 A
0.05–1 A
DL..G
5–250 V AC
0.01–5 A
0.01–1 A
DL..G
5–48 V DC
0.01–1 A
0.01–1 A
DL..T
30–
240 V AC
5 A
0.5 A
DL..TG
< 30 V AC/
DC
0.1 A
0.05 A
Contact gap < 3 mm (μ).
If the pressure switch has switched a voltage > 24 V
(> 30 V) and a current > 0.1 A at cos φ = 1 or
> 0.05 A at cos φ = 0.6 once, the gold plating on
the contacts will have been burnt through. It can
then only be operated at this power rating or higher
power rating.
9 DesIGneD LIFetIMe
This information on the designed lifetime is based on
using the product in accordance with these operat-
ing instructions. Once the designed lifetime has been
reached, safety-relevant products must be replaced.
Designed lifetime (based on date of manufacture) in
accordance with EN 13611, EN 1854 for DL..A, DL..K:
10 Jahre years.
You can find further explanations in the applicable
rules and regulations and on the afecor website (www.
afecor.org).
This procedure applies to heating systems. For ther-
moprocessing equipment, observe local regulations.
