Nibe S735 - Page 55

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.
MENU 7.1.6.3 - POWER AT DOT
Manually selected power at DOT
Setting range: on/off
Power at DOT
Setting range: 1 – 1,000 kW
Here, you set the power the property requires at DOT (dimen-
sioned outdoor temperature).
If you choose not to activate "Manually selected power at
DOT", the setting is made automatically, i.e. S735 calculates
suitable power at DOT.
MENU 7.1.8 - ALARMS
In this menu, you make settings for the safety measures
that S735 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 on alarm
Setting range: on/off
Select how you want the S735 to alert you that there is an
alarm in the display here.
The different alternatives are that S735 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 mal-
function.
MENU 7.1.8.2 - EMERGENCY MODE
Immersion heater output
Immersion heater output: 3.5 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 insufficient in
emergency mode, you will not be able to change
these.
MENU 7.1.9 - LOAD MONITOR
Fuse size
Setting range: 1 – 400 A
Transformer ratio
Setting range: 300 – 3,000
Here, you set fuse size and transformer ratio for the system.
The transformer ratio is the factor that is used to convert
the metered voltage to current.
MENU 7.1.10 - SYSTEM SETTINGS
You make your various system settings for your installation
here.
MENU 7.1.10.1 - OPERATING PRIORITISATION
Auto mode
Setting option: on/off
Min
Setting range: 0 – 180 minutes
"Operating prioritisation" is normally set in "Auto", but it is
also possible to set prioritisation manually. Select how long
the installation should work with each demand, if there are
several demands at the same time.
If there is only one demand, the installation works with that
demand.
If 0 minutes are selected, this means that the demand is not
prioritised, but will instead only be activated when there is
no other demand.
Operating prioritisation
Hot water
Heating
Min
Hot water
Auto mode
55Chapter 9 | Control - MenusNIBE S735