Honeywell FTS015 DATASHEET

4

2

Temperature transmitters

Two-phase frost protector

Two-phase frost protector Type
series FTS

with limiter contact and integrated priority selection

FTS015

Technical data

Supply voltage 24 VAC ± 20 % or

Output signal 0–10

Power consumption max. 1 W
Cable entry M16 x 1.5 for output

Degree of protection IP 65
Mounting With 2 x 4 mm screws

Ambient temperature 12 to 50°C

Switching capacity 8 A, 250 VAC

24–36 VDC

V ± 1 mA (with
falling temperature)
+

floating limiter

contact

signal 0–10 V
Plug connection to
DIN 43650 for limit

witch

value s

directly on the duct
wall. 5 capillary tube
holders type H
included

Please note: at ambi­ent temperatures
below 10°C the unit
responds and signals
“risk of frost”

3 are

With falling temperature the frost protector gen­erates a rising output signal from 0–10 V.

If the temperature continues to fall, a limiter
contact (single-pole changeover contact) is
actuated.

If the output signal of the controller (Y signal) is looped through the frost protector, a maximum selec­tion of the two signals takes place. If the Y signal from the controller is greater than the output signal
of the frost protector, the controller determines the position of the heating valve (normal operation). If
the output signal of the frost protector is greater than the Y signal of the controller (risk of frost), then

ost protector determines the position of the heating valve, as long as “risk of frost” is signalled by

the fr
the sensor. When there is no longer any risk of frost, the controller automatically resumes control of
the heating valve.

nal priority selection is therefore not required. The sensor acting over the entire length is self-

Exter
monitoring, i.e. in the event of breakage or damage to the capillary tube, “risk of frost” is signalled.
If the signal of the controller is not looped through, the FTS outputs the signal of the frost protector.

Product Summary

Type Range of action Capillary tube

FTS 015 +10 to +3°C 6 m
FTSB 015 +10 to +3°C 3 m

Characteristics

Connection scheme
(plug connection)

Connection scheme
(ter

minal connection)

Output

For frost protection thermostats, see page 28

Schematic diagram

Specification

Two-phase frost protector with limiter contact and integrated
maximum selection for monitoring the surface of the air heater,
input signal: 0–10 V, output signal: 0–10 V ± 1 mA + single-pole
changeover s

Sensor Relay Comparator

s

pillary tube length 3/6 m.

Ca

witch.

Degree of protection:
IP 65