© 2015 OJ Electronics A/S
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Attach the WLM3 master to a suitable wall. It will generally be convenient if the unit is situated within 0.8
m of the manifold, as most thermal actuators are supplied with 1 m cable. Cables can be run across the
surface to the terminals using either the cable releases in the cover or by pressing out the cable entries
in the lower part of the cover.
PlEasE EnsurE tHat all Wiring is CarriED out in aCCorDanCE WitH loCal
ElECtriCal rEgulations.
When wiring is completed, fit the cover on the master using the screws provided.
Mains supply
WlM3 requires a 230V aC mains supply connected to the terminals marked l, n, & PE
(Continuously PE only)
Electrical installation
Boiler demand (heat source)
The master has a volt-free relay output that can be used to control a boiler/heat pump or to open
a motorised valve.
A) To control a heat source that requires switching of the live supply, take a link from L (230V) to
the terminal marked BOILER - B1. Connect the heat source L to the terminal marked BOILER –
B2. Connect the heat source N terminal to the N terminal on the master, and the heat source PE
to the master terminal PE (see fig. 4A).
B) To control a heat source that has a pair of dedicated terminals for remote switching (e.g. by a
room sensor), connect these terminals to the terminals marked B1 and B2 on the master. B1 and
B2 are “volt free” terminals and can therefore be used for either a 230V AC or a 24V AC circuit
from the heat source.
BR965A13a
Fig. 3
installation
Fig. 4a
BR965A14a
Summary of Contents for WLCT3
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