General pipe connections
Pipe installation must be carried out in accordance with
current norms and directives.
NOTE
The heating medium side and the domestic hot
water side must be fitted with the necessary
safety equipment in accordance with the applic-
able regulations.
The pipe dimension should not be less than the recommen-
ded pipe diameter according to the table. However, each
system must be dimensioned individually to manage the
recommended system flows.
MINIMUM SYSTEM FLOWS
The installation must be dimensioned to manage at least
the minimum defrosting flow at 100% pump operation, see
table.
Minimum re-
commended
pipe dimen-
sion (mm)
Minimum re-
commended
pipe dimen-
sion (DN)
Minimum flow
duringdefrost-
ing
(100% pump
speed (l/s)
Air/waterheat
pump
22
20
0.29
AMS 10-12/
HBS 05-12
28
25
0.39
AMS 10-16/
HBS 05-16
Minimum re-
commended
pipe dimen-
sion (mm)
Minimum re-
commended
pipe dimen-
sion (DN)
Minimum flow
duringdefrost-
ing
(100% pump
speed (l/s)
Air/waterheat
pump
22
20
0.19
AMS 20-6/
HBS 20-6
AMS 20-10/
HBS 20-10
Minimum re-
commended
pipe dimen-
sion (mm)
Minimum re-
commended
pipe dimen-
sion (DN)
Minimum flow
duringdefrost-
ing
(100% pump
speed (l/s)
Air/waterheat
pump
22
20
0.29
F2040-12
28
25
0.39
F2040-16
Minimum re-
commended
pipe dimen-
sion (mm)
Minimum re-
commended
pipe dimen-
sion (DN)
Minimum flow
duringdefrost-
ing
(100% pump
speed (l/s)
Air/waterheat
pump
22
20
0.19
F2050-6
F2050-10
Minimum re-
commended
pipe dimen-
sion (mm)
Minimum re-
commended
pipe dimen-
sion (DN)
Minimum flow
duringdefrost-
ing
(100% pump
speed (l/s)
Air/waterheat
pump
28
25
0.38
F2120-16
(3x400V)
Minimum re-
commended
pipe dimen-
sion (mm)
Minimum re-
commended
pipe dimen-
sion (DN)
Minimum flow
duringdefrost-
ing
(100% pump
speed (l/s)
Air/waterheat
pump
28
25
0.32
S2125-8
(1x230V)
S2125-8
(3x400V)
S2125-12
(1x230V)
S2125-12
(3x400V)
NOTE
An undersized system can result in damage to the
product and lead to malfunctions.
VVM 310 together with a compatible air/water heat pump
(see section "Outdoor modules") constitutes a complete in-
stallation for heating and hot water.
The system requires the dimensions of the radiator circuit
to be designed for a low temperature heating medium. At
the lowest dimensioned outdoor temperature, the highest
recommended temperatures are 55 °C on the supply line
and 45 °C on the return line, but VVM 310 can handle up to
70 °C on the supply line.
NIBE recommends installing VVM 310 as close to the heat
pump as possible for the optimum comfort. For further in-
formation about the location of various components, see
section "Installation alternative" in this manual.
Caution
Ensure that incoming water is clean. When using
a private well, it may be necessary to supplement
with an extra water filter.
Caution
Any high points in the climate system, must be
equipped with air vents.
11
Chapter 4 | Pipe connections
NIBE VVM 310
Pipe connections
