Setting The Cooling/Heating Curve - Nibe VVM 500 Installer Manual

Setting the
cooling/heating curve
heating curve 1.9.1.1
system
flow temperature °C
outdoor temp. °C
cooling curve 1.9.1.2
system
flow temperature °C
outdoor temp. °C
HEATING CURVE
Setting range: 0 – 15
Default value: 9
COOLING CURVE
Setting range: 0 – 9
Default value: 0
The prescribed heating curve for your house can be
viewed in the menu curve
is to give an even indoor temperature, regardless of the
outdoor temperature, and thereby energy efficient oper-
ation. It is from this heating curve that the indoor mod-
ule's control computer determines the temperature of
the water to the heating system, supply temperature,
and therefore the indoor temperature. Select the heating
curve and read off how the supply temperature changes
at different outdoor temperatures here. If there is access
to cooling the same settings can be made for the cooling
curve.
Caution
With underfloor heating systems,
line temperature
between 35 and 45 °C.
With underfloor cooling, "min. flow line temp."
must be restricted to prevent condensation.
Check the max temperature for your floor with
your installer/floor supplier.
NIBE VVM 500
. The task of the heating curve
max flow
should normally be set to
TIP
Wait 24 hours before making a new setting,
so that the room temperature has time to sta-
bilise.
If it is cold outdoors and the room temperature
is too low, increase the curve slope by one in-
crement.
If it is cold outdoors and the room temperature
is too high, lower the curve slope by one incre-
ment.
If it is warm outdoors and the room temperat-
ure is too low, increase the curve offset by one
increment.
If it is warm outdoors and the room temperat-
ure is too high, lower the curve offset by one
increment.
COOLING IN 2-PIPE SYSTEM
VVM 500 contains a built-in function for operating cooling
in a 2-pipe system down to 17 °C, factory setting 18 °C.
This requires that the outdoor module can perform
cooling. (See the Installer Manual for your air/water heat
pump.) If the outdoor module can perform cooling, the
cooling menus are activated in the display on the indoor
module (VVM).
In order for operating mode "cooling" to be permitted,
the average temperature must be above the setting
value for "start cooling" in menu 4.9.2
The cooling settings for the climate system are adjusted
in the indoor climate menu, menu 1.
Chapter 6 | Commissioning and adjusting 37