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AEG EM 50-2 Manual

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© 2012 OJ Electronics A/S - EHT Haustechnik GMBH
Supply voltage ..................115/240V AC ±10%,
50-60 Hz
Built-in electronic
power supply (SMPS) ................. 24 V DC, 8 VA
3 output relays
(potential-free contact, NO) ................. 3 X 16 A
Alarm relay (potential-free contact, NO) max. 5 A
Control signal to actuator
(mixing valve) .................................... 0-10 V DC
On/o dierential ............................. 1.8°F / 1°C
Temperature range ..........-4/+50°F / -20/+10°C
Ambient temperature ..........32/122°F / 0/+50°C
Ambient air humidity ............................10-95%
Enclosure rating .........................IP 20 / Nema 1
Weight ......................................................600 g
Dimensions H/W/D .................... 90/156/45 mm
Type 1B
Control pollution degree ..................................2
Rated impulse voltage ................................4 kV
Ground sensor type EF 50-25 H:
Designed to be embedded in outdoor areas.
Detection ................. Moisture and temperature
Mounting ......................................Outdoor area
Enclosure rating .........................................IP 68
Ambient temperature .................... -57/+158°F /
-50/+70°C
Dimensions sensor ..................... H32, Ø60 mm
Dimensions tube ...................... H78, Ø63,5 mm
Gutter sensor type F 50-10 RH:
Designed to be mounted in gutter or downpipe.
Is used together with outdoor sensor type ATF 5.
Detection .............................................Moisture
Mounting ............................Gutter or downpipe
Enclosure rating .........................................IP 68
Ambient temperature ...-57/+158°F / -50/+70°C
Dimensions H/W/D ................. 110/28/16,3 mm
Outdoor sensor type ATF 5:
Detection .......................................Temperature
Mounting ....................................................Wall
Ambient temperature .................... -57/+158°F /
-50/+70°C
Dimensions H/W/D ...................... 86/45/35 mm
Dimensions H/W/D ...................... 86/45/35 mm
The snow and ice melting system is deactivated
in the event of sensor failure.
SENSOR INSTALLATION
Ground sensor EF 50-25 H, fig. 1+3:
For installation on outdoor areas where snow
and ice is a regular problem. The sensor must
be embedded horizontally with its top flush with
the surroundings. Use the accompanying instal-
lation plate.
The sensor cable must be installed in accord-
ance with current regulations. We recommend
that cable pipes be laid to protect the sensor
cable. Detailed installation instructions are sup-
plied with the sensor.
Gutter sensor F 50-10 RH, fig. 2+4:
For installation in a gutter, or downpipe on the
sunny side of the building. It is important to
ensure that the sensor contact elements face
against the flow of melt water. If necessary, two
sensors can be installed in parallel. Detailed
installation instructions are supplied with the
sensor.
Note that the pink and grey wires are not used.
Outdoor sensor ATF 5, fig. 2+4:
ATF 5 is for use with gutter sensor F 50-10 RH.
ATF 5 can also be used separately for the de-
tection of temperature alone. The sensor should
be mounted on the wall beneath the eaves on
the north side of the building.
Sensor cables:
EF 50-25 H and F 50-10 RH are supplied with
25/10 m cable, which can be extended up to
approx. 200 m using standard installation cable:
6x1.5 mm² for EF 50-25 H and 4x1.5 mm² for
F 50-10 RH. The ATF 5 cable can be up to
approx. 50 m in length. Sensor cables must be
installed in accordance with current regulations.
They must never be installed parallel to power
cables as electrical interference may distort the
sensor signal.
EM 50-2 installation
The unit is intended to be DIN-rail mounted in
an approved panel.
Wall mounting:
For USA and Canada: The thermostat can be
wall-mounted in a specially designed and UL-
approved metal box (accessory).
For other countries: The accompanying plastic
cover can be used for wall mounting in an
indoor area.
Connect supply voltage to terminals N and L. All
electrical and mechanical installation must be
performed in accordance with applicable local
regulations.
SETUP:
• 1-zone electric heating control with
EF 50-25 H (fig. 3+6):
Connect 1 or 2 EF 50-25 H sensors to termi-
nals 11-16 for sensor 1 and terminals 11-20
for sensor 2.
Connect heating cable to output relays 1, 2
and 3 according to fig. 8.
• 1-zone electric heating control with
F 50-10 RH + ATF 5 (fig. 4+7):
Connect 1 or 2 F 50-10 RH sensors to termi-
nals 11-16 for sensor 1 and terminals 11-20
for sensor 2.
Note that the pink and grey wires are not
used.
Connect 1 ATF 5 sensor to terminals 31-32.
Connect heating cable to output relays 1, 2
and 3 according to fig. 8.
• 2-zone electric heating control with
EF 50-25 H (fig. 6):
Connect 2 EF 50-25 H sensors to terminals
11-20.
Connect heating cable for zone 1 to output
relay 1 according to fig. 8.
Connect heating cable for zone 2 to output
relay 2 according to fig. 8.
• 2-zone electric heating control with
F 50-10 RH (fig. 7):
Connect 2 F 50-10 RH sensors to terminals
11-20. Note that the pink and grey wires are
not used.
Connect heating cable for zone 1 to output
relay 1 according to fig. 8.
Connect heating cable for zone 2 to output
relay 2 according to fig. 8.
Output relay 3 is not active.
• 2-zone electric heating control with
F 50-10 RH and EF 50-25 H (fig. 5+17):
Connect 1 F 50-10 RH sensor to terminals
11-16 as sensor 1. Note that the pink and
grey wires are not used.
Connect 1 EF 50-25 H sensor to terminals
11-20 as sensor 2. Connect heating cable
for zone 1 (roof) to output relay 1 according
to fig. 8.
Connect 1 ATF 5 sensor to terminals 31-32.
Connect heating cable for zone 2 (ground) to
output relay 2 according to fig. 8.
Output relay 3 is not active.
• 1-zone electric heating control and output
control (Y/∆) (fig. 9+10):
Advanced 2-step control with EF 50-25 H.
1/3 power on heating cables in afterrun.
Connect 1 or 2 EF 50-25 H sensors to termi-
nals 11-20.
Connect external contactor/relays to output
relays 1, 2 and 3 according to fig. 10.
• Remote control (fig. 15):
The forced heat and standby functions can
be remotely controlled by wiring EM 50-2 to
external buttons/relays (normally open).
Connect external standby button to termi-
nals 33-34.
Connect external forced heat button to
terminals 35-36.
TESTING SNOW MELTING SYSTEM
After completing installation and application
setup, it is recommended that the snow melting
system be tested.
1. Adjust SET TEMP in the setup menu to max.
temperature.
2. Pour some water onto the sensor
(EF 50-25 H/F 50-10 RH).
3. The output relay for the heating cable in the
zone concerned should activate and ON
should be indicated on the EM 50-2 display.
Check that the heating cable becomes
warm, check the voltage if possible.
4. After testing, adjust SET TEMP back to the
desired setting
(factory setting = +3.0°C / 37.4°F).
WIRING
Terminal
Colour
code
Wiring
N, L
Supply voltage,
120-240 V AC 50/60 Hz
1, 2
Alarm relay (potential free)
max. 5 A
3, 4
Output relay 1, 16 A (potential
free), Heating cable 1 (zone 1) /
Primary pump
5, 6
Output relay 2, 16 A (potential
free), Heating cable 2 (zone 2) /
Secondary pump
7, 8
Output relay 3, 16 A (potential
free), Heating cable 3
11, 12 brown/green
Sensor heating 1+2, EF 50-25 H
1+2 and F 50-10 RH 1+2
13, 14 grey/pink
Temperature sensor,
EF 50-25 H (1)
15, 16 yellow/white
Moisture sensor 1,
EF 50-25 H 1/ F 50-10 RH (1)
17, 18 grey/pink
Temperature sensor,
EF 50-25 H (2)
19, 20 yellow/white
Moisture sensor,
EF 50-25 H 2 / F 50-10 RH (2)
31, 32
Outdoor temperature sensor,
ATF 5
33, 34 Standby, external input
35, 36
Forced control heat,
external input
F 50-10 RH SENSOR WIRES : Note that
the pink and grey wires are not used.
ENVIRONMENT PROTECTION AND RECY-
CLING
Help protect the environment by disposing of
the packaging and redundant products in a
responsible manner.
PRODUCT DISPOSAL
Products marked with this symbol must
not be disposed of along with house-
hold refuse, but must be delivered to a
waste collection centre in accordance
with current local regulations.
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