nvent Raychem RayStat-M2 Manual

RayStat-M2
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ENGLISH
Type nVent RAYCHEM RayStat-M2 is an
electronic thermostat for economical ice
and snow melting on outdoor areas and in
gutters. Ice forms due to a combination of low
temperature and moisture. RayStat-M2 detects
temperature and moisture and the snow melting
system will usually only be activated if snow
or ice is present. RayStat-M2 is suitable for
controlling electric heating cables.
Product program
RayStat-M2 Thermostat.
RayStat-M2-G-Sensor Ground sensor for
detecting temperature
and moisture.
RayStat-M2-R-Sensor Gutter sensor for
detecting moisture.
RayStat-M2-A-Sensor Ambient Temperature
sensor.
CE MARKING
This product is manufactured in accordance
with Council Directive 89/336/EEC on
electromagnetic compatibility (and subsequent
amendments) and Council Directive 2006/95/
EEC on electrical equipment designed for use
within certain voltage limits.
Applied standards
EN 61000-6-3, EN 61000-6-2, EN 60730-1 and EN
60730-2-9.
The product may only be used if the complete
installation complies with current directives.
The product carries a manufacturer's warranty if
installed in accordance with these instructions
and current regulations.
If the product has been damaged in any way,
e.g. during transport, it must be inspected and
checked by authorised personnel before being
connected to the power supply.
WARNING – Important safety instructions.
Always disconnect the power supply before
performing installation or maintenance work
on this control unit or any of the components
connected to it. This control unit and the
components connected to it should only be
installed by qualified electricians. Electrical
installation must be performed in accordance
with applicable local regulations.
TECHNICAL DATA
Thermostat RayStat-M2:
Supply voltage ............. 230 V AC ±10 %, 50-60 Hz
Output relay (NO) ............................................16 A
On/off differential ........................................ 0.4 °C
Temperature Setting for Startup ............ 0/+10 °C
Run-on time .............................................0-5 hours
Ambient temperature ........................... -10/+50 °C
Ambient air humidity ................................. 10-95 %
Enclosure rating ............................ IP 20 / Nema 1
Power consumption ........................................3 VA
Weight ......................................................... 200 g
Dimensions H/W/D .........................86/52/59 mm
Ground sensor type RayStat-M2-G-Sensor:
Designed to be embedded in outdoor areas.
Detection .....................Moisture and temperature
Mounting .......................................... Outdoor area
Enclosure rating .............................................IP 68
Ambient temperature ........................... -50/+70 °C
Dimensions ...................................... H32, Ø60 mm
Gutter sensor type RayStat-M2-R-Sensor:
Designed to be mounted in gutter or downpipe.
Is used together with outdoor sensor RayStat-
M2-A-sensor.
Detection ................................................. Moisture
Mounting ................................ Gutter or downpipe
Enclosure rating .............................................IP 68
Ambient temperature ........................... -50/+70 °C
Dimensions H/W/D .......................105/30/13 mm
Outdoor sensor type RayStat-M2-A-Sensor:
Detection ........................................... Temperature
Mounting ......................................................... Wall
Ambient temperature ........................... -50/+70 °C
Dimensions H/W/D .........................86/45/35 mm
NOTE: The snow and ice melting system
is deactivated in the event of sensor
failure - regardless of sensor type.
SENSOR INSTALLATION
Ground sensor, fig. 1 + 3:
For installation in outdoor surfaces where ice and
snow are a regular problem. The sensor must be
embedded horizontally with its top flush with the
surrounding surface.
The sensor cable must be installed in accordance
with current regulations.
NOTE: We strongly recommend the use of cable
pipes in order to protect the sensor cable. Detailed
installation instructions are supplied with the
sensor.
With RayStat-M2-G-Sensor, use the accompanying
installation plate.
Gutter sensor RayStat-M2-R-Sensor, 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. Be aware that
the pink and grey wire must not be installed.
Detailed installation instructions are supplied
with the sensor.
Outdoor sensor RayStat-M2-A-Sensor, fig.
2 + 4:
For use in conjunction with gutter sensor
RayStat-M2-R-Sensor. Can also be used
separately for the detection of temperature
alone. The sensor should be mounted on the
wall under the eaves on the north side of the
building.
Sensor cables
RayStat-M2-G-Sensor and RayStat-M2-R-Sensor
are supplied with 10 m cable, which can be
extended up to approx. 200 m using standard
installation cable: 6x1.5 mm 2 for RayStat-M2-G-
Sensor and 4x1.5 mm 2 for RayStat-M2-R-Sensor.
The RayStat-M2-A-Sensor 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.
Thermostat installation
The thermostat should be DIN-rail mounted in an
approved panel.
Connect supply voltage to terminals 1 and 2.
Electrical installation must be performed in
accordance with applicable local regulations.
Setup
RayStat-M2 can be set up for ice and snow
melting on outdoor areas in conjunction with
RayStat-M2-G-Sensor sensors or in gutters/
downpipes in conjunction with RayStat-M2-R-
Sensor and RayStat-M2-A-Sensor sensors.
• Electric heating control with RayStat-M2-G-
Sensor
(fig. 5 + 7):
Connect 1 RayStat-M2-G-Sensor sensor to
terminals 8-14.
Connect heating cable to output relay
according to fig. 7.
• Electric heating control with RayStat-M2-R-
Sensor + RayStat-M2-A-Sensor
(fig. 6 + 7):
Connect 1 RayStat-M2-R-Sensor sensor to
terminals 10-14. Note that the pink and grey
wires must not be connected.
Connect 1 RayStat-M2-A-Sensor sensor to
terminals 8 and 9.
Connect heating cable to output relay
according to fig. 7.
How to program the sensitivity:
1. Turn off the power to the RayStat-M2.
2. Connect a wire between terminals 8 and 9
3. Connect a wire between terminals 10 and 11
4. Turn the TIME SET knob to max. (constantly
on).
5. Turn the TEMP SET knob to max. (10).
6. Turn on the power. The LED for ON will
flash.
a. The LEDs for TEMP, MOIST and RELAY
will light constantly, indicating the factory
setting for sensitivity level.
7. Program the sensitivity level by turning the
TIME SET knob from 1-5 (1=min., 2=low,
3=normal/factory setting, 4=high, 5=max.).
a. The combination of LEDs will indicate the
programmed sensitivity (see matrix below).
8. Turn off the power and select the required
settings for temperature (TEMP SET) and
after-run time (TIME SET).
9. Remove the wires connecting terminals 8
and 9 and terminals 10 and 11.
10. Install the temperature sensor and moisture
sensor as normal.