FTSE ELECTRONIC FROST PROTECTION THERMOSTATS – MOUNTING INSTRUCTIONS
5
MU1B-0589GE51 R0915
GENERAL INFORMATION
These instructions contain information which must be observed in the interest
of your own safety and to avoid material damage. This information is supported
by the use of symbols appearing in these instructions.
Please read these instructions before commissioning the device. Store these
instructions in a place that is accessible to all users at all times.
If difficulties occur during start-up, please refrain from performing any actions
which could jeopardize your warranty rights.
MOUNTING SITE
Install the probe line in the direction of air flow downstream from the first air
heater that is filled with water and susceptible to frost.
MOUNTING
Fig. 1A: Before mounting the FTSE Electronic Frost Protection Thermostat,
remove the housing lid and fit the M16 cable gland(s). Two M16 cable
glands are included in the delivery. The housing features one pre-
existent hole and two additional knock-outs into which M16 cable
glands may be fitted. Use the O ring included in the delivery to
securely fasten the cable gland into place.
Direct Mounting on the Air Duct or Device Wall
Fig. 1B: Insert the rubber plug into the back of the housing.
Fig. 1E: Mount the housing.
Fig. 1F: Mounting the housing with test loop for function test.
NOTE: The temperature in the test loop must be
≥ the temperature in
the air duct.
Mounting Using a Mounting Flange
Fig. 1C: Mounting flange (R9) suitable for insulated air ducts having walls up to
70 mm thick.
Mounting the Probe Line in the Air Duct
Fig. 1D: Use the holders included in the delivery (FTSE20: 3X; FTSE60: 6X).
The capillary tube must not have any kinks; allow as large a bending
radius as possible (min. 20 mm).
TECHNICAL DATA
MEASURING RANGE:
0 … 15 °C
SETTING RANGE:
1 … 10 °C
VOLTAGE SUPPLY:
24 VAC +10 / -20% SELV, 48 … 63 Hz
VALVE CONTROL INPUT:
(Y1) 0 … 10 V, input current max. 0.1 mA
VALVE CONTROL OUTPUT:
(Y2) 0 … 10 V, load max. 1 mA
TRANSMITTER OUTPUT:
(T) 0 … 15 °C = 0 … 10 V, load max. 1 mA
ELECTRICAL SAFETY:
According to DIN EN 60730-2-9. Overvoltage
category III. Pollution degree 2. Rated surge voltage
4.0 kV. Brinell test temperature 125 °C. Software
class A.
PROTECTION RATING:
I, with internal isolation from SELV circuit
POWER CONSUMPTION:
Max. 6.6 VA
ELECTRICAL CONNECTION:
Tension spring terminals
CONDUCTOR CROSS-SECTION:
Max. 2 x 1.5 mm
2
or 1 x 2.5 mm
2
,
min. 1 x 0.25 mm
2
ELECTROMAGNETIC COMPATIBILITY: DIN EN 61326-1
INTERFERENCE EMISSION:
Class B
INTERFERENCE IMMUNITY:
Industrial requirements
PERMISSIBLE AMBIENT TEMP.:
-15 … +55 °C (use)
-25 … +65 °C (storage)
FUSE PROTECTION:
Max. 10 A
RELAY OUTPUT:
230 VAC, 6(2) A; 24 VDC, 0.1 … 6 A
PROTECTION TYPE:
IP42 according to EN 60529
MODE OF OPERATION:
According to 60730-1, type 1 B
WEIGHT:
2-meter probe line, approx. 0.34 kg; 6-meter probe
line, approx. 0.41 kg
APPROVALS:
CE,
ELECTRICAL INSTALLATION
Only qualified personnel may make the electrical connection.
The choice of cable, the installation, and the electrical connection must conform
to the requirements of VDE 0100 "Regulations for the installation of power
circuits with nominal voltages below 1000 V", or to the appropriate local
regulations.
If the relay contacts (NO, COM, NC) are not operated at separated extra-low
voltage (SELV), only authorized and qualified electricians may open the device
for adjustment work or, alternatively, the relay contact must be de-energized.
Wire the installation according to its circuit diagram. If it does not have one, the
circuit diagram given in these instructions may be used as an aid.
Connection suitable for fixed cables, cable routing with strain relief, attachment
type Y, cable gland clamping range 5 to 10 mm.
ADJUSTMENTS
Fig. 3:
Adjustments can be made using the two buttons (3) and (4) accessible
after unscrewing and removing the sealing screw (A).
The
switch-point (
SP
)
is set by pressing the
P
(PARAMETER) key once and
then pressing the
(VALUES) key until the desired value appears in the
display (2). Values are rotational; automatic transfer of values after 2 seconds.
The
operating mode (
St
)
is set by pressing the
P
key twice and then
pressing the
key until the desired mode
(
At
or
Hd
)
appears in the display
(2).
At
= automatic unlocking (temperature monitor)
Hd
= manual unlocking (temperature limiter)
Values are rotational; automatic transfer of values after 2 seconds.
Start-Up
Check wiring according to the installation's circuit diagram.
Check whether the switch-point and operating mode are set correctly.
FUNCTION
Checking the Probe Function
Set the switch-point based on the current probe line temperature.
If required, cool the function loop or another segment of the probe line (at least
250 mm long) to below the switch-point.
The relay contact must switch, and the LED (1) must light up.
The measurement signal voltage can be measured at terminals T and GND
(see Fig. 3). Measuring range: 0 VDC to 10 VDC
≙
0 … 15 °C.
Test Mode (
tE
)
The
test mode (
tE
)
is set by pressing either the
P
key or the
key for more
than 2 seconds. The display screen then shows "
tE
" alternating with the
switch-point.
The output relay switches to the "frost" position and the LED (1) will light up.
The valve control signal (terminal Y1) is not affected.
The test mode is switched off again by pressing either key again for 2 seconds
or by interrupting the voltage supply.
Unlocking in "Frost" Position
In the "auto" operating mode, the frost monitor is automatically unlocked as
soon as the temperature rises by approx. 2 K above the switch-point (see Fig.
5).
In the manual operating mode, the output relay remains in the "frost" position. It
can be unlocked by pressing either the
P
key or the
key or by interrupting
the voltage supply.
Indicating a Fault
If the frost monitor has stopped functioning due to a fault in the probe line
(fracture in the capillary tube), the device switches to the "frost" mode. The
relay also switches, and the LED (1) lights up. The display (2) flashes "- -" if the
voltage supply is correct.
