INSTALLATION MANUAL AIR HEATER TYPE EH 8
4.3 Electrical connection
The electrical installation must comply with
local and national requirements as well as IEE
regulations.
4.3.1 Power supply
The air heater requires an earthed power
supply of 230 V/AC. A supply of 400 V/AC +
Neutral is optional. The control circuit is a two
wire low voltage bus communication.
4.3.2
Fuse
One fuse is present on the air heater’s control
board (see the electrical wiring diagram in §9).
•
When replacing this fuse, always use a
fuse of the same type (5AT).
4.4 Room thermostat
The heater can only be controlled with one of
the following Winterwarm modulating room
thermostats:
-
The MTC
: a modulating digital clock
thermostat with optimiser.
-
The MTS
: a modulating digital
thermostat.
-
ON/OFF thermostat:
a simple on/off
thermostat.
-
Interface module
; a specially designed
interface module for BMS systems.
Contact your supplier for more
information.
4.4.1 Installation requirements
Follow these requirements when placing the
thermostat to ensure the heater functions
correctly:
•
Make sure that air can circulate around the
thermostat
•
Make sure the sun does not shine directly
upon the thermostat
.
•
Do not place the thermostat on a cold wall.
•
Place the thermostat on an inner wall free
from draught.
•
Never place the thermostat within the throw
of the heater.
•
Never mount the thermostat near the
aerials of internal communication
networks. These emit radiation that can
disturb the thermostat. Keep several
meters distance.
In all cases, the communication between the
heater and the thermostat is based on a two
wire, low-voltage connection. (see the
electrical wiring diagram in §9). Follow these
instructions to prevent malfunction of the
installation and damage to the thermostat or
air heater:
•
Use a cable with the following
specifications:
o
Signal cable.
o
Shielded and twisted.
o
Minimum dimensions: 1
x 2 x Ø0,8 mm
2
.
o
Maximum length: 200 m.
Keep the thermostat cable
separated from the mains cables.
Connect the cable’s earth
shield only to the earth terminal inside the air
heater. Do not connect the other end of the
cable’s earth shield
.
A cable with a thickness of less than 0.8mm will
result in a poor signal.
A cable that is not shielded
and twisted may result in a disturbed
communication in an EMC-unfriendly
environment.
L1 L2 L3 N
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