Nibe FIGHTER 2010 Series, Installation And Maintenance Instructions Manual, Page: 18 / 36

Electrical connection
FIGHTER 2010
16
For the Installer
Example of additional heating
connection
Additional heating/downtime
FIGHTER 2010 is equipped with a potential free con-
tactor intended for additional heat: Max 250V, 2A.
The setting of the outdoor air temperature (balance
temperature) when the additional heating relay is acti-
vated is made on channel 17, see the section “Control
Channel description”.
External additional heat: connected via additional
heating relay terminal (14). Conditions for connecting
additional heat:
■
The outdoor air temperature should be lower than
the set balance temperature (channel 17).
■
The compressor should have been operational in
stage 2 during at least the period selected in chan-
nel 28. Defrosting is included in this time.
If the outdoor air temperature drops down to a level
under the set value, stop temperature (downtime), in
channel 18 compressor operations are blocked and all
heating must take place using the external additional
heat via the downtime relay terminal (16). This func-
tion is also activated when FIGHTER 2010 is deener-
gized.
The connection to the additional heating relay is made
as set out in the picture below.
3 4
16
14
NO O/C NO O/C
Till sa t s S tille s tånd
NC
NC
16
14
3 4
NO O/C NC
Hjälpkont a ktor
(ingår ej vid lever a n s )
12 – 2 3 0V
Max load across the relay contactors is 250V, 2A.
During operations without the need of the additional
heating or downtime the relay contactors are closed
between NO and O/C.
Additional heating and downtime are acquired
between NC and O/C. The contactors are drawn in the
deenergized state.
Additional heating and downtime relays are activated
during normal operating conditions for FIGHTER
2010. Both relays are deactivated in the event of oper-
ating disruptions.
Basic circuit diagram for connection of auxiliary relays
for additional heating and downtime.
11
Re1
X29
4
X29
5
N
X29
6
29
3 4 1 2 5 6
Position 2, 230 V output
signal with a common alarm.
Position 3, 230 V output
signal with no alarm.
FIGHTER 2010 is equipped with a contactor for exter-
nal indication of common alarms. The function be-
comes active with all types of alarms. Max load on the
relay contact is 250V, 2A.
The connection for external indication of common
alarms is made as set out in the picture below:
An outdoor sensor (15) is positioned on the underside
of FIGHTER 2010. If the FIGHTER 2010 faces south
or to the west, where there is a risk of intensive heat-
ing by the sun, the outdoor sensor should be posi-
tioned on a north or north-west facing wall.
External indication of common
alarms
Outside sensor
Additional heating “Downtime”
Auxiliary relay
(not included)