Possible selections for AUX output
It is possible to have an external connection through the
relay function via a potential-free switching relay (max.
2 A) on the input board (AA3), terminal block X7. The
function must be activated in menu 5.4.
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 37).
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 ac-
cessories for cooling or if F1355 has an integrated
cooling function
• 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
NOTE
The relevant distribution box must be marked
with a warning about external voltage.
External circulation pump, ground water pump or hot
water circulation pump is connected to the common
alarm relay as illustrated below. If the pump has to work
in the event of alarm, the cable is moved from position
2 to position 3.
F1345
E
xternt
1 2 3
L
L
N
N
PE
PE
Circulation pump
AA101-X9
F1355
External
Caution
For relay position operation, see section “Relay
output for emergency mode”, see page 29.
Connecting
accessories
Instructions for connecting accessories are in the install-
ation instructions provided for the respective accessory.
See information at nibe.eu for the list of the accessories
that can be used with F1355.
NIBE F1355Chapter 5 | Electrical connections32
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