Nibe S1155 Installer Manual page 53

MENU 7.1.6.1 - MAX DIFFERENCE SUPPLY
TEMPERATURE
Max difference compressor
Setting range: 1 – 25 °C
Max difference additional heat
Setting range: 1 – 24 °C
BT12 offset
Setting range: -5 – 5°C
Here you set the maximum permitted difference
between the calculated and actual supply temperature
in the event of compressor or additional heat mode re-
spectively. Max difference additional heat can never
exceed max difference compressor
Max. difference, compressor: If the current supply
temperature exceeds the calculated supply by the set
value, the degree minute value is set to +1. The com-
pressor in the heat pump stops if there is only a heating
demand.
Max difference additional heat: If "Additional heat" is
selected and activated in menu 4.1 and the current
supply temperature exceeds the calculated temperature
by the set value, the additional heat is forced to stop.
BT12 offset: If there is a difference between temperat-
ure sensor, heating medium supply (BT25), and temper-
ature sensor, condenser supply (BT12), you can set a
fixed offset here to compensate for the difference.
MENU 7.1.6.2 - FLOW SETTING, CLIMATE
SYSTEM
Setting
Alternative: radiator, floor heat., rad. + floor heat.,
Own setting
Setting range DOT: -40.0 – 20.0 °C
Own setting
Setting range dT at DOT 0.0 – 25.0
Setting range DOT: -40.0 – 20.0°C
The type of heating distribution system the heating
medium pump works towards is set here.
dT at DOT is the difference in degrees between supply
and return temperatures at design outdoor temperature.
NIBE S1155
MENU 7.1.6.3 - POWER AT DOT
Alternative: Manually selected power at DOT, Power
at DOT
Manually selected power at DOT
Setting range: on/off
Power at DOT
Setting range: 1 – 100 kW
Here, you set the power the property requires at DOT
(dimensioned outdoor temperature).
If you choose not to activate "Manually selected power
at DOT", the setting is made automatically, i.e. S1155
selects suitable power at DOT.
MENU 7.1.8 - ALARM
In this menu, you make settings for the safety measures
that S1155 will implement in the event of any operational
disruption.
MENU 7.1.8.1 - ALARM ACTIONS
Reduce room temperature
Setting range: on/off
Stop producing HW
Setting range: on/off
Audio signal in event of alarm
Setting range: on/off
Select how you want the S1155 to alert you that there
is an alarm in the display here.
The different alternatives are that S1155 stops producing
hot water and/or reduces the room temperature.
Caution
If no alarm action is selected, this can result in
higher energy consumption in the event of a
malfunction.
MENU 7.1.8.2 - EMERGENCY MODE
Immersion heater output
Setting range: 4 – 7 kW
Settings are made in this menu for how the additional
heat will be controlled in emergency mode.
Caution
In emergency mode, the display is switched
off. If you feel the selected settings are insuffi-
cient, you will not be able to change these.
Chapter 9 | Control - Menus 53