28
DV51 DV51CH
TECHNICAL
SPECIFICA
TIONS
S
IP
P
V
K
C
Y
Y2
A
G
H
D
F
E
N
B
C
N
BRINE HEAT EXCHANGER
A
Ventilation unit
B
Supply air
C
Outdoor air
D
Feed from the distribution board
E
Air extraction
F
Brine heat exchanger (reverse
connection)
G
Heat pump
H
Heat collection circuit
N
External NTC sensor
P
Circulation pump . Not included in the delivery . The pump should be suited to pumping
liquid colder than the surrounding air, due to risk of condensation (for example, Grundfos
Magna 1 25-80) .
V
Solenoid valve . Not included in the delivery . The valve that is chosen must be compatible
with the heat collection circuit fluid (for example, ELV05006, Stig Wahlström).
K
Condensing water tube . Not included in the delivery .
IP
De-aerator . Not included in the delivery .
S
External electrical junction box for the MV
N
External NTC sensor for Adroit MV ventilation units
C
24 VDC relay/contactor for controlling the pump and the solenoid valve . Not included in
the delivery . (For example, ABB CR-P024DC2)
Y
One-way valve . Not included in the delivery .
Y2
One-way valve . Not included in the delivery . The pressure loss must be less than the
pressure loss of the heat pump .
In the supply air duct
IP
B
C
G
H
D
E
S
P
V
K
C
Y
Y2
A
F
N
In the outdoor air duct