Here you set the start and stop temperature of the hot water
for the different demand modes in menu 2.2 as well as the
stop temperature for periodic increase (menu 2.4).
MENU 7.1.2 - CIRCULATION PUMPS
This menu contains sub-menus where you can make ad-
vanced circulation pump settings.
MENU 7.1.2.1 - OP. MODE HM PUMP GP1
Operating mode
Options: Auto, Intermittent
Auto: The heating medium pump runs according to the
current operating mode for S735.
Intermittent: The heating medium pump starts approx. 20
seconds before and stops 20 seconds after the compressor.
Caution
The selection "Intermittent" is only available in in-
stallations with external supply temperature
sensor (BT25).
MENU 7.1.2.2 - PP SP. HEATING MEDIUM GP1
Heating
Auto
Setting range: on/off
Manual speed
Setting range: 1 - 100 %
Minimum permitted speed
Setting range: 1 - 50 %
Maximum permitted speed
Setting range: 50 - 100 %
Speed in wait mode
Setting range: 1 - 100 %
Hot water
Auto
Setting range: on/off
Manual speed
Setting range: 1 - 100 %
Make settings here for the heating medium pump's speed
in the current operating mode, for example in heating or hot
water operation. Which operating modes can be changed
depends on which accessories are connected.
Heating
Auto: Here, you set whether the heating medium pump is
to be regulated automatically or manually.
Manual speed: If you have opted to control the heating me-
dium pump manually, you set the desired pump speed here.
Minimum permitted speed: Here, you can restrict the pump
speed to ensure that the heating medium pump is not al-
lowed to operate at a lower speed in auto mode than the set
value.
Maximum permitted speed: Here, you can restrict the pump
speed to ensure that the heating medium pump is not al-
lowed to operate at a higher speed than the set value.
Speed in wait mode: Here, you set the speed the heating
medium pump will have in standby mode. Standby mode
occurs when heating operation is permitted but there is no
need for either compressor operation or electric additional
heat.
Hot water
Auto: Here, you set whether the heating medium pump is
to be regulated automatically or manually in hot water mode.
Manual speed: If you have opted to control the heating me-
dium pumps manually, you set the desired pump speed here
in hot water mode.
MENU 7.1.3 - COMPRESSOR
This menu contains sub-menus where you can make ad-
vanced compressor settings.
MENU 7.1.3.1 - BLOCKFREQ
Block freq 1 and 2
Setting range start: 15 – 92 Hz
Setting range stop: 18 – 95 Hz
Maximum setting range: 50 Hz.
Here you can set a frequency range where the compressor
is blocked. The limits for the setting range can differ depend-
ing on model of heat pump.
NOTE
A large blocked frequency range can cause the
compressor to run jerkily.
NOTE
Blocking peak output in S735 can lead to reduced
savings.
MENU 7.1.4 - VENTILATION
This menu contains sub-menus, where you can make ad-
vanced ventilation settings.
Caution
An incorrectly set ventilation flow can damage the
house and may also increase energy consumption.
53Chapter 9 | Control - MenusNIBE S735
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