Wiring in the heater
The heater requires two connections; the SELV
communications cable link up and the 230V mains L,N,E
connection to power the heater element.
Remove the top cover from the terminal box by rotating the
four fixing screws half a turn. The communications cable
(supplied) can now be plugged into the socket marked
Ecosmart NET inside the box. (See fig 3).
The other end of the SELV cable should be plugged into the
connection box of the associated supply fan in the system.
Data Cable installation
A 4-core SELV data cable is used to connect devices.
Do not run data cable in the same conduit as the mains
cables and ensure there is a 50mm separation between
the data cable and other cables. The maximum cable run
between any two devices is 300m when it is installed in
accordance with the instructions.
Please note that the total data cable length used in any
system must be less than 1000m. Keep the number of cable
joints to a minimum to ensure the best data transmission
efficiency between devices.
To connect the mains supply to the unit it is necessary to
remove the casing from the heater body. Remove the two
fixing screws and lift off the casing to reveal the terminal
block marked LNE (See fig 4).
Knockouts are provided in the casing panel for cable entry.
Connect mains wiring to terminals (3kW 230V a.c. 1 phase).
Locating the temperature probe sensor
A flying lead is attached to the heater module which is
terminated with a temperature sensing probe.
The probe should be located in the ductwork approximately
500mm DOWNSTREAM of the heater. (See fig 1).
Setting the ‘air-off’ temperature
A variable ‘air off’ temperature adjustment is provided on
the side of the heater module (see fig 5). The setting is
adjustable from 5 - 35
o
C and is achieved by inserting a
small screwdriver into the adjuster aperture and rotating
the spindle clockwise or anti-clockwise.
Manual Reset button
The heater will normally operate automatically. To ensure
safe operation it has a safety cut-out with a manual reset
button, located on the top of the casing (see fig 6).
This may be used to reactivate the heater in the event of a
shut down due to overheating.
Installation and Maintenance
ECOSMART ESH Heater
L N 1
2 E
Figure 3. SELV cable connection on heater.
Figure 4. Connecting the mains supply.
5
10
15
20
25
30
o
C
35
Figure 5. Setting the ‘air off’ temperature.
Figure 6. Manual reset button.
11. 05. 17. Leaflet Number 671181
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