Technical Data - S+S Regeltechnik THERMASREG FST-K-HR Notice D'instruction

G
®
THERMASREG
Mechanical frost protection thermostat ⁄ frost monitor THERMASREG
with automatic reset or with mechanical locking, with / without optional manual reset. The frost protector is suitable for air or water-side temperature
monitoring at heat exchangers, water circulation systems and heating registers to prevent freezing up and to avoid frost damage, e.g. in ventilation and
air conditioning ducts. The FST-K is intrinsically safe and is equipped with sensor breakage detection. In the event of damage to the capillary membrane
system, the frost sensor automatically switches to the heating function. The scope of delivery includes the mounting flange MF-14-K.

TECHNICAL DATA

Switching capacity:
Setting range:
Operating difference:
Reproducibility:
Contact:
Resetting:
Permissible medium:
Ambient temperatures:
Enclosure:
Enclosure dimensions:
Cable gland:
Process connection:
Electrical connection:
Protective tube:
Other materials:
Protection class:
Protection type:
Standards:
FUNCTION
THERMASREG ® FST-K – Duct frost protection thermostat, mechanical
Type ⁄ WG02 Temperature
Range
FST-K
FST-K –10...+15 °C
FST-K - HR
FST-K HR –10...+15 °C
Equipment: FST-K
FST-K - HR
Accessories
MF-14-K Mounting flange, plastic
FST-K
10 (2) A, AC 250 V;
because of gold-plated switching contacts also switching of signal voltages < 24 V
–10...+15 °C ⁄ +14 °F...+59 °F,
factory setting to w = +5 °C (+41 °F)
2 ± 1 K (3.6 ± 1.8 °F)
± 0.5 K (± 0.9 °F)
dust-proof micro switch as single-pole potential-free changeover contact
FST-K automatic
FST-K - HR manual
Air
maximum operating temperature: +70 °C (+158 °F)
minimum operating temperature: w + min. +2 °C (min. +3.6 °F)
storage ⁄ transport: –30...+70 °C (–22...+158 °F)
plastic, UV-stabilised,
material polyamide, 30 % glass-globe reinforced,
colour traffic white (similar to RAL 9016)
108 x 70 x 73.5 mm (Thor 2)
M 20 x 1.5; with strain relief
by mounting flange, plastic
(included in the scope of delivery)
2
0.14 - 2.5 mm , via screw terminals
metal, material CuZn37 (2.0321),
Ø 14 mm, NL = 205 mm
mechanical sheet metal parts: galvanised steel
capillary tube: copper
capillary tube filling: R 507
switching contacts: Ag ⁄ Ni (90% ⁄ 10%) gold-plated (3 μm)
I (according to EN 60 730-1)
IP 65 (according to EN 60 529)
CE conformity, EMC directive 2014 ⁄ 30 ⁄ EU,
low-voltage directive 2014 ⁄ 35 ⁄ EU
Contact C - 2: danger of frost ⁄ sensor breakage
Contact C - 3: normal operation
Thermal Operating
Difference (fixed) approx.
2 K (± 1 K)
2 K (± 1 K)
TW = temperature monitor (automatically switching)
TB = temperature limiter (manual reset)
® FST-K with switching output, duct tube monitored across the entire length,
Function Permissible
Medium
TW air
TB air
Rev. 2018 - V12 GB
Item No.
TW
1102- 1064- 0100- 001
TB
1102-1064- 1100- 000
7100- 0030-2000- 000