Operation - nVent RAYCHEM Elexant 450c Bedienungsanleitung

Attachment of the pipe line sensor - see picture D1
• fix sensor firmly on the pipe surface with adequate fixing tape (same
EN
tape as used to fix heater to the pipe)
• fix sensor parallel to pipe
DE
• route sensor cable and eventual extension cable to avoid damage in
use. Fix to pipe with adequate tape where appropriate
FR
NL
Location of the sensor: outdoor as ambient sensor - see picture D2
Mount the sensor in a position exposed to normal weather conditions
DA
but shielded from direct sunlight. The sensor should not be located near
surfaces that are heated from within or may be heated by sunlight. It is
FI
recommended to use the sensor with housing GM-TA-AS (PCN 1244-
NO
017965) for ambient temperature detection of outdoor areas.
SE Warning: Do not install sensor at ambient temperatures below –20°C.
Do not bend the 50 mm tip of the sensor. Min. bending radius for sensor
CZ
cable: 10 mm.
LT
Wiring sensor to Elexant 450c
Connect the sensor cable according to the drawing for sensor 1 or
PL
sensor 2 shown in the wiring diagram (page 77/78). The unit will
be provided with 1 sensor (NTC -type). A second sensor can be
RU
connected but needs to be ordered separately. Sensor-NTC-10 M
ZH
(PCN 1244-015847).
IT Sensor extension
The sensor cable can be extended up to 150 m when a cross section of
2 x 1,5 mm² is used (max. 20 Ω per conductor). The connection between
sensor cable and sensor extension can be made in junction box JB-86 or
equivalent. Use a shielded cable for extension to avoid interference. The
shielding / braid is to be earthed in the panel/thermostat.
Ensure that the pipe and sensor are thermally insulated and clad to the
design specification after installation of the thermostat.
Sensor temperature range extension
By using the accessory item Sensor Module SM-PT100-2 (PCN 1244-
022442) for connection to a PT100 type of sensor, the temperature range
can be extended up to 245°C.
Modbus connection
The Elexant 450c-Modbus (PCN 1244-022623) can be connected to
a Building Management System (BMS) by using MONI-RS485-WIRE
(PCN 549097-000) shielded, twisted 2-core cable (max. 1000 m) for the
connection master / slave and BMS.

3. OPERATION

If Elexant 450c / 450c-Modbus is not programmed, the unit will start a
quickstart menu after powering up. For further detailed parameters and
settings use the separate operation manual and the Modbus register map
document.This can be downloaded from www.nVent.com/RAYCHEM.
Note: The pre-programming of the controller can be done with an external
power-bank e.g. RAYCHEM-PB-POWERBANK (PCN 1244-020365) in case
there is no power supply on site during controller/panel installation.
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8 nVent.com/RAYCHEM