S+S Regeltechnik THERMASREG FST-70 [6/16] Therm asre
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S+S Regeltechnik THERMASREG FST-70 [6/16] Therm asre

S+S Regeltechnik THERMASREG FST-70 [6/16] Therm asre
G
THERMASREG
®
FST
Rev. 2021 - V27
The mechanical frost protection thermostat ⁄ frost monitor
THERMASREG
®
FST
with switching output, fully-active sensor rod, with automatic
reset, or with mechanical locking and manual reset, is available with capillaries in lengths of 0.6 m, 1.8 m, 3 m, 6 m, or 12 m. This frost protection
monitor is used for air- and water-side temperature monitoring at heat exchangers, water circulation systems, and heating registers to prevent
freezing up and to avoid frost damages, e. g. in ventilation and air conditioning ducts. All devices are self-secure with sensor breakage detection. In
case of damage to the capillary tube – membrane system, the relay automatically switches to heating function.
FST - 3
can also be used for monitoring
liquids. The sensor tube can be installed inside an immersion sleeve. Mounting clamps
MK - 05 -K
are included in the delivery.
TECHNICAL DATA
Switching capacity: 10 (2) A, AC 250 V;
because of gold-plated switching contacts also switching of signal voltages < 24 V
Setting range: –10...+15 °C ⁄ +14 °F...+59 °F,
factory setting to w = +5 °C (+41 °F)
Operating difference: 2 ± 1 K (3.6 ± 1.8 °F)
Reproducibility: ± 0.5 K (± 0.9 °F)
Contact: dust-proof micro switch
as single-pole potential-free changeover contact
Sensor responding length: approx. 40 cm
Length of capillary tube: see table of types (0.6…12 m)
Resetting:
FST-xD
automatic
FST-xD - HR
manual
Permissible medium:
FST-1D ⁄ 5D ⁄ 7D ⁄ 8D
air
FST-3D
water
Ambient temperatures: 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)
capillary: max. +150 °C (+302 °F)
Process connection: by mounting clamps
MK- 05 - K
(included in the scope of delivery)
Housing: plastic, UV-resistant, material polyamide, 30 % glass-globe reinforced,
with quick-locking screws (slotted ⁄ Phillips head combination),
colour traffic white (similar to RAL 9016)
Housing dimensions: 126 x 90 x 50 mm (Tyr 2)
Cable gland: M 16 x 1.5; including strain relief
Other materials: mechanical sheet metal parts: galvanised steel
capillary tube: copper
capillary tube filling: R 507
switching contacts: Ag ⁄ Ni (90% ⁄ 10%) gold-plated (3 μm)
Installation length: arbitrary
Routing: bending radius > 35mm
admissible vibration load ≤ ½g
admissible tensile load < 100 N
Electrical connection: 0.14 - 2.5 mm²
Protection class: I (according to EN 60 730-1)
Protection type:
IP 65
(according to EN 60 529)
Standards: CE conformity, EMC directive 2014 ⁄ 30 ⁄ EU, low-voltage directive 2014 ⁄ 35 ⁄ EU
FUNCTION
Contact C - 2: danger of frost ⁄ sensor breakage
Contact C - 3: normal operation
THERMASREG
®
FST
Frost protection thermostats, mechanical
Type ⁄ WG03 Temperature
Range
Thermal Operating
Difference (fixed) approx.
Length of
Capillary
Permissible
Medium
Item No.
FST - xx D TW
FST-1D
*
–10…+15 °C 2 K (± 1 K) 6.0 m air 1102-1021-0102-000
FST-3D
*
–10…+15 °C 2 K (± 1 K) 1.8 m air ⁄ water 1102-1023-0102-000
FST-5D
*
–10…+15 °C 2 K (± 1 K) 3.0 m air 1102-1022-0102-000
FST-7D
*
–10…+15 °C 2 K (± 1 K) 12.0 m air 1102-1025-0102-000
FST-8D –10…+15 °C 2 K (± 1 K) 0.6 m air 1102-1024-0102-000
FST - xx D - HR TB
FST-1D-HR
*
–10…+15 °C 2 K (± 1 K) 6.0 m air 1102-1021-1102-000
FST-3D-HR
*
–10…+15 °C 2 K (± 1 K) 1.8 m air ⁄ water 1102-1023-1102-000
FST-5D-HR
*
–10…+15 °C 2 K (± 1 K) 3.0 m air 1102-1022-1102-000
FST-7D-HR
*
–10…+15 °C 2 K (± 1 K) 12.0 m air 1102-1025-1102-000
FST-8D-HR –10…+15 °C 2 K (± 1 K) 0.6 m air 1102-1024-1102-000
Features: FST- x
D
TW
= temperature monitor (
automatically switching
)
FST- x
D - HR
TB
= temperature limiter (
manual reset
)

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