PRODUCT CATALOGUE 2023 | alre.de

PLANT ENGINEERING

AIR HEATER THERMOSTAT JTL-2 … -11 / JTL-8 NR … -17 NR CAPILLARY SYSTEM – 2 FUNCTIONS OR 3 FUNCTIONS – TÜV-TESTED

TECHNICAL DATA

APPLICATION

Housing colour: Sensor material:

grey

Minimum or maximum thermostat for inflow air monitoring and fan regulation in ventilation and air conditioning systems. Overheating protection ther- mostat for electrical heat registers and directly fired air heaters with oil and gas operation.

Cu

Ambient temperature: Permissible atmospheric humidity: Max. sensor temperature:

−15 to +80 °C

Max. 95% rel. humidity, non-condensing

200 °C

Operating voltage:

none

The switch ‘MAN – AUTO’ allows the fan to be used for ventilation in summer.

Max. switching current: Min. switching current: Max. switching voltage: Min. switching voltage: Switching element: Control function: Control range (fan): Hysteresis (fan): Electrical connection: Mounting / attachment:

15 (8) A 150 mA

230 V AC, 50 Hz 24 VAC, 50 Hz

Type … NR: Temperature-controlled fan regulation, burner monitoring and safety temperature limiter, 3 functions. Attention: Assemble the device in a vibration-free manner in order to avoid malfunctions and / or sensor rupture. Type-tested by TÜV according to DIN EN 14597 For hot air heaters in accordance with DIN 4794

microswitch, toggler, potential-free

heating or cooling

20 to 70 °C

adjustable approx. 8 – 30 K

screw-type terminals mounting on air duct

Protection rating: Protection class: Safety and EMC:

IP20

I

according to DIN EN 60730

Sensor:

liquid-filled capillary, active over its entire length intrinsic safety, protection against cold, internal setting, scale: degrees Celsius

General features:

operating elements:

fan switch

TYPE

ITEM NO.

CONTROL RANGE BURNER

HYSTERESIS OF BURNER (APPROX.)

CAPILLARY LENGTH

FEATURES*

EURO / PG

JTL-2

E6110013

70 to 100 °C

8 K

350 mm

TW

223.30 / II

JTL-8

E6110049

70 to 100 °C

external reset

350 mm

STB, locked when the temperature is rising, overheating protection

225.30 / II

JTL-11

E6110064

70 to 100 °C

8 K

1250 mm

TW

242.80 / II

JTL-8 NR

E6120038

70 to 95 °C

8 K

350 mm

locked when the temperature is rising, TW / STB, tolerances: STB +0 / – 10 K, overheating protection, external reset STB, shut-off tem- perature STB fixed: 100 °C locked when the temperature is rising, TW / STB, tolerances: STB +0 / – 10 K, overheating protection, external reset STB, shut-off tem- perature STB fixed: 100 °C

343.50 / II

JTL-17 NR

E6120077

70 to 95 °C

8 K

1,250 mm

363.70 / II

* TW = temperature monitor, STB = safety temperature limiter

JTL-4 is replaced by JTL-8. JTL-4 NR is replaced by JTL-8 NR.

Intrinsic safety / protection against cold: The devices are intrinsically safe, i.e., upon loss of the sensor medium owing to sensor rupture, for example, the burner is switched off. Since minus temperatures generate the same effect through volume reduction of the sensor medium, the devices are adjusted by means of the ‘cold screw’ such that they switch off the burner only at temperatures below −15 °C. They can only be switched on again manually at temperatures above approx. –5 °C by means of the manual reset button. Overheating protection: This device provides protection from uncontrolled overheating caused, for example, by heat building up or by creeping capillary filling losses when there is invisible damage to the sensor or the capillary tube, etc. Upon reaching a temperature of 220 °C, the safety slot in the sensor melts and, in reaction to losing the filling medium, the device switches off the burner towards the safe side. The burner cannot be switched on again. The device is then unusable and serves as evidence of the presence of an over-temperature of at least 220 °C.

Locking: For types JTL-8, JTL-8 NR and JTL-17 NR, a restart after cooling down is only possible by manual reset.

204

Catalogue 2023

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