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ENG-030B/p.392
Room thermostat (RP entry) -
when the voltage free contact gets
opened the boiler will stop heating.
The entry is responsible for boiler
control depending on the room tem-
perature. It’s described in section
INSTALLATION.
Master appliance (NA entry) – you
can limit the electricity consumption,
i.e. the boiler can be switched off
while another appliance consumes
electricity. To do it, an electrician
should install in line an extra open
contact in to the NA entry (voltage
free entry), so that when a master
appliance gets on, the contact will
be opened the boiler switched off.
When the NA contact gets opened,
heating will get off and the pump
stopped. The EKCO boiler may also
work as the second boiler. If it is so,
the master boiler by opening the
NA entry will stop heating of EKCO.
However, the mode of the three-way
valve control stays on so the cylinder
is fed by the heat from the master
boiler.
Connection of
external appliances
5
Fig.5 ZIO board
A - room thermostat
B - master appliance
RP - room thermostat connection point
NA - master appliance connection point
RP, NA – free-voltage entry. Do not connect any voltage!
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ENG-030B/p.392
Installer instruction manual
black
brown
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