Electrical Connections; General; Connections; Optional Connections - Nibe F110 Installation Manual

Electrical connections

General

• Electrical installation and wiring must be carried out in
accordance with national provisions.
• Disconnect F110 before insulation testing the house wiring.
• If the building is equipped with an earth-fault breaker,
F110 should be equipped with a separate one.
• F110 must be installed via an isolator switch. The cable
area has to be dimensioned based on the fuse rating used.
• If a miniature circuit breaker is used, this must have at
least triggering characteristic "C". See section "Technical
specifications" for fuse size.
• For an electrical wiring diagram for F110, see the "Technical
specifications" section.
NOTE
Electrical installation and any servicing must be
carried out under the supervision of a qualified
electrician. Disconnect the current using the cir-
cuit breaker before carrying out any servicing.
NOTE
If the supply cable is damaged, only NIBE, its ser-
vice representative or similar authorised person
may replace it to prevent any danger and damage.
NOTE
Check the connections, main voltage and phase
voltage before the product is started, to prevent
damage to the heat pump electronics.
NOTE
Do not start the system before filling up with wa-
ter. Components in the system could be damaged.
TEMPERATURE LIMITER (FQ10)
The temperature limiter (FQ10) cuts the current supply to
the electric additional heat if the temperature rises between
90 and 100°C and can be manually reset.
Resetting
The temperature limiter (FQ10) is accessible behind the front
cover. Reset the temperature limiter by carefully pressing
the button (FQ10-SF2) using a small screwdriver.
20 Chapter 5 | Electrical connections

Connections

SUPPLY
F110 is connected to a earthed single-phase wall socket or
a permanent installation. For permanent installations, F110
must be preceded by a circuit breaker with at least a 3 mm
breaking gap.

Optional connections

EXTERNAL CONNECTION OPTIONS
F110 has software-controlled AUX inputs for connecting
external switch function (contact has to be potential free).
Selectable inputs
Selectable inputs on the base board (AA2) for these func-
tions are:
AUX1 Blocking additional heat
AUX2 Blocking the compressor
AA2-X13
1
2
3
4
1
2
3
4
5
6
1 2 3 4 5 6 7 8 9 10 11 12
In the above example, inputs AUX1 (X13:1-2) and AUX2 (X13:3-4) on the input
board (AA2) are both used.
Possible selection for AUX inputs
External blocking of functions
An external switch function can be connected to F110 for
blocking various functions. The switch must be potential-
free and a closed switch results in blocking.
NOTE
Blocking can entail a risk of freezing.
Functions that can be blocked:
• internally controlled additional heat
• compressor
AA2-X13:1-2
AA2-X13:3-4
External F110
4
AUX2
3
2
AUX1
1
AA2-X13
NIBE F110