Nibe VVM 320 - Navigating the Menu System; Menu 1: Indoor Climate Settings; Menu 2: Hot Water Management

Anti-freeze climate system VVM320
If heating is actively shut-off and it becomes colder outdoors, heating is activated to prevent the heating system
from freezing.
If heating is blocked and the outdoor temperature (BT1) drops below +3°C, the anti-freeze function activates.
■
Heating medium pump GP1 starts and the heating calculation with min supply line as set point value.
■
Additional heat is permitted, even if another function has blocked it, but the compressor will remain blocked. The
alarm and load monitor can block/restrict the additional heat however.
■
There is no anti-freeze for pool.
If the anti-freeze function is active and the outdoor temperature (BT1) exceeds +3.5°C, the anti-freeze function de-
activates.
Circulation pumps connected to accessory cards are active.
Anti-freezing outdoor unit
Frysskydd
av utedel
Givarfel på utetemp (1:a
hand OU_BT28
2:a hand EB100 - BT1) el.
OU_BT3 el. OU_BT12
Frysskydd
aktivt
Utedel
saknas
Tid i sek som GP12 stått
stilla sedan den senast
gick > f(utetemp)*
BT12 < 10
eller
BT3 < 10
BT12 > 40
och
BT3 > 40
BT12 > 20
och
BT3 > 20
Pump aktiv
> 1 min
Aktivera
frysskydd
Inaktivera
frysskydd
Avaktivera
frysskydd
Markera frysskydd
aktivt
Ja Nej
NejNej
Nej
Nej
Nej
Nej
Nej
Nej
Nej
Nej
Ja
Ja
Ja
Ja
Ja
Ja
Ja
Ja
Ja
Ja
Frysskydd
inaktivt
Frysskydd
inaktivt
Frysskydd
aktivt
BT28 < 2°C
Frysskydd
aktivt
Frysskydd
aktivt
Frysskydd
aktivt
* f är en rät linje som anger tid mellan
pumpdrift som funktion av BT28.
f(utetemp)=90*utetemp+3000 (ute-
temp i °C).
Ex)
utetemp = 0°C => 3000 s (50 min)
utetemp = -30°C => 300 s (5 min)
utetemp = +10°C => 3900 s (65 min)
VVM 500 / 310 / 320
SMO 20/ SMO 40
Yes No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
Anti-freeze
of outdoor unit
Anti-freeze
active
Activate
anti-freeze
Anti-freeze
active
Deactivate
anti-freeze
Anti-freeze
active
Anti-freeze
active
Anti-freeze
not active
BT28 < 2°C
Sensor fault on outdoor
temp
(1st OU_BT28
2nd EB100 - BT1) el.
OU_BT3 el. OU_BT12
Outdoor unit
missing
Time in seconds that
GP12 has been
stationary since it last
ran > f(outdoor temp)*
BT12 < 10
or
BT3 < 10
Mark anti-freeze
active
BT12 > 40
and
BT3 > 40
Pump active
> 1 min
BT12 > 20
and
BT3 > 20
Deactivate
anti-freeze
Anti-freeze
not active
Anti-freeze
active
* f is a straight line that indicates the
time between pump operations as a
function of BT28.
f(outdoor temp)=90*outdoor
temp+3000 (outdoor temp in °C).
E.g.
outdoor temp = 0°C => 3000 s (50
min)
outdoor temp = -30°C => 300 s (5
min)
outdoor temp = +10°C => 3900 s (65
min)
VVM 500 / 310 / 320 / 325
SMO 20 / SMO 40
NIBE™ VVM 320Chapter 4 | Description of functions12