SYSTEM DIAGRAM
VVM S320 consists of water heater with charge coil, expan-
sion vessel, safety valve, filler valve, immersion heater, cir-
culation pumps, buffer vessel and control system. VVM S320
connects to the climate system.*
VVM S320 is directly adapted for connection and communic-
ation with a compatible NIBE air/water heat pump, see sec-
tion "Outdoor modules", and together they constitute a
complete heating installation.
When it is cold outdoors, the air/water heat pump works
with VVM S320, and if the outdoor air temperature falls be-
low the heat pump’s stop temperature, all heating is carried
out by VVM S320.
*Non-return valve is not included in VVM S320 in NIBE VVM S320 E 3x400V
DK and NIBE VVM S320 R EM 3x230V.
NIBE VVM S320 R 3x400V NL
Non-return valve and safety valve must be fitted outside
NIBE VVM S320 R 3x400V NL. Non-return valve and safety valve are not in-
cluded in NIBE VVM S320 R 3x400V NL. See section "Cold and hot water".
National regulations must be observed.
Connection, heating medium supply line Ø22 mmXL1
Connection, heating medium return line Ø22 mmXL2
Connection, cold water Ø22 mmXL3
Connection, hot water Ø22 mmXL4
Connection, hot water circulation Ø15 mm (does not ap-
ply to VVM S320 CU)
XL5
Connection, docking from heat pump Ø22 mmXL8
Connection, docking to heat pump Ø22 mmXL9
15Chapter 4 | Pipe connectionsNIBE VVM S320