COOLING IN 2-PIPE SYSTEM
VVM 320 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.
Setting hot water
circulation
HOT WATER RECIRC.
operating time
Setting range: 1 – 60 min
Factory setting: 60 min
downtime
Setting range: 0 – 60 min
Factory setting: 0 min
Set the hot water circulation for up to three periods per
day here. During the set periods the hot water circulation
pump will run according to the settings above.
"operating time" decide how long the hot water circula-
tion pump must run per operating instance.
"downtime" decide how long the hot water circulation
pump must be stationary between operating instances.
NOTE
Hot water circulation is activated in menu 5.4
"soft inputs and outputs".
Pool
POOL (ACCESSORY IS REQUIRED)
start temp
Setting range: 5.0 – 80.0 °C
Factory setting: 22.0 °C
stop temperature
Setting range: 5.0 – 80.0 °C
Factory setting: 24.0 °C
Select whether the pool control is to be activated and
within what temperatures (start and stop temperature)
pool heating must occur.
When the pool temperature drops below the set start
temperature and there is no hot water or heating require-
ment, VVM 320 starts pool heating.
Untick "activated" to switch off the pool heating.
Caution
The start temperature cannot be set to a value
that is higher than the stop temperature.
NIBE VVM 320Chapter 6 | Commissioning and adjusting44
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