Emergency mode
When the heat pump is set to emergency mode (SF1
is set to ), only the most necessary functions are ac-
tivated.
■
The compressor is off and heating is managed by the
immersion heater.
■
The load monitor is not connected.
NOTE
Switch (SF1) must not be moved to "" or " "
until F370 has been filled with water. Other-
wise the temperature limiter, thermostat and
the immersion heater may be damaged.
Power in emergency mode
The immersion heater’s output in emergency mode is
set with the dipswitch (S2) on the immersion heater
circuit board (AA1) according to the table below.
When installing according to current building regula-
tions (BBR) the immersion heater's power in emergency
mode must be set to the maximum permitted electrical
output.
3x400V
654321kW
onoffoffoffoffoff2
onoffoffonoffoff4.67
offonoffonoffoff5.30
offonoffonoffon8*
ononononoffon10.25
*Factory setting
3x230V
654321kW
offoffoffonoffoff2
offononoffoffoff4.67
offonononoffoff6.67
offoffonoffonon8*
offononoffonon10
*Factory setting
3x230V3x400V
The image shows the dip-switch (AA1-S2) in the factory
setting.
Optional connections
Load monitor
When many electrical appliances are connected in the
property at the same time as the electric additional
heat is operating, there is a risk of the property's main
fuse tripping. The heat pump has integrated load
monitors that control the electrical steps for the elec-
trical addition by redistributing the power between
the different phases or disengaging in event of over-
load in a phase. Reconnection occurs when other cur-
rent consumption is reduced.
25Chapter 5 | Electrical connectionsNIBE™ F370