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 regula- tion in ventilation and air conditioning systems. Overheating protection thermostat for electrical heat registers and directly fired air heaters with oil and gas operation. The “MAN – AUTO” switch allows the fan to be used for ventilation in summer. 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
Cu
Ambient temperature: Permissible atmospheric humidity: Max. sensor temperature
–15 … +80 °C
Max. 95% rel. humidity, non-con- densing
200 °C
Operating voltage:
none
Max. switching current: Min. switching current: Max. switching voltage: Min. switching voltage:
15 (8) A 150 mA
230 VAC, 50 Hz 24 VAC, 50 Hz
Switching element: Control function:
microswitch, toggler, potential-free
heating or cooling
Control range ventilator:
20 … 70 °C
Hysteresis of fan:
adjustable approx. 8…30 K
Electrical connection: Mounting / attachment:
screw-type terminals mounting on air duct
Protection rating: Protection class: Safety and EMC:
IP 20
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*
PG
JTL-2
E6110013
70 … 100 °C
8 K
350 mm TW
II
JTL-8
E6110049
70 … 100 °C
external reset
350 mm STB, locked when the tem- perature is rising, overheating protection
II
JTL-11
E6110064
70 … 100 °C
8 K
1250 mm TW
II
JTL-8 NR
E6120038
70 … 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 1,250 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
II
JTL-17 NR
E6120077
70 … 95 °C
8 K
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.
Catalogue 2022 | Page 178
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