NOTE
Blocking entails a risk of freezing.
Functions that can be blocked:
• heating (blocking of heating demand)
• compressor (blocking of EP14 and EP15 can be com-
bined. If you want to block both (EP14) and (EP15),
this will occupy two AUX inputs).
• hot water (hot water production). Any hot water circu-
lation (HWC) remains in operation.
• internally controlled additional heat
• tariff blocking (additional heat, compressor, heating,
cooling and hot water are disconnected)
Possible selections for AUX output
It is possible to have an external connection through the
relay function via a potential-free variable relay (max 2
A) on terminal block AA101-X9.
NOTE
An accessory board is required if several func-
tions are to be connected to terminal block
AA101-X9 at the same time that indication of
the common alarm is activated (see page 42).
The picture shows the relay in the alarm position.
When switch (SF1) is in the " " or " " position the relay
is in the alarm position.
Caution
The relay outputs may be subjected to a max
load of 2 A at resistive load (230V AC).
TIP
The AXC accessory is required if more than
one function is to be connected to the AUX
output.
Optional functions for external connection:
Indications
• alarm indication
• indication of common alarm
• cooling mode indication (only applies if there are
cooling accessories)
• holiday indication
Control
• controlling ground water pump
• control of circulation pump for hot water circulation
• control of external circulation pump (for heating medi-
um)
• control of additional heat in charge circuit
33Chapter 5 | Electrical connectionsNIBE F1345
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