www.alfrescoheaters.ie
12
Dual element wiring
(ALF 50, 60, 80)
Note:
For dual element
heaters, bright yellow tags
are used to indicate the live
and neutral wires - L and N
for one element and L1 and
N1 for the other.
1.
Check the
Product Specifications
table for the correct voltage and wattage for your model.
2.
Remove the junction box cover by unscrewing the two screws holding it in place.
3.
Remove the black neoprene weather-proof gasket underneath the cover.
Alfresco heaters are pre-fitted with an IP4-rated gland (cord-grip). This is the cream, plastic cylinder
that goes through the side of the junction box. The gland grips the cable wire when you have
installed it and prevents water from entering the junction box. If installing outdoors, only use wiring
components approved for outdoor use with a minimum IPX4 rating.
The following picture shows the inside of a junction box for a dual element heater.
Junction box
wiring
Note:
Neutral and live connectors are also indicated with bright yellow tags in the junction box.
4.
Insert the power supply cable in through the gland.
Use a suitable cable with aluminium or copper wire with a temperature tolerance of at least 90°C
(194°F). For single element heaters, use 3-core (one live, one neutral, and one earth wire), 2.5mm
2
Live connector
Neutral connector
Gland
Earth connector
