91
© Vallox Oy - All rights reserved
S
P
V
K
C
IP
B
C
D
E
F
G
H
A
Operation and sample connection
Always follow first and foremost the connection diagram
provided by the HVAC designer or heat pump manufacturer.
Also read the duct radiator manual.
Enclosed is an example of connecting the duct radiator to
the heat collection circuit.
Connect the duct radiator output pipe to the heat collection
circuit return pipe. The fluid returning from the duct radiator
is directed back to the heat collection circuit return pipe.
If the pressure loss inside the heat collection circuit of the
heat pump is known to be high, it is recommended that the
heat pump be bypassed. When this happens the pressure
loss in the one-way bypass valve Y2 must be lower than the
pressure loss in the heat pump.
If the duct radiator is used both for preheating and cooling,
it must be installed in the outdoor air duct before the
ventilation unit. In this case, the pump and the solenoid valve
can be controlled using a Vallox MV ventilation unit, and no
separate thermostats are needed.
NOTE: HEATING
The pump starts when the outdoor air
temperature drops below the winter
limit value set at the factory (-5 °C).
NOTE: COOLING
The value set for the supply air
temperature of the active profile
(e.g. At home) controls the startup
of the pump. The pump starts when
the supply air setting is below the
temperature of the supply air that is
blown into the apartment.
NOTE
When selecting the relay (C), take
account of the maximum allowed
combined power supply (6W) of
the circuit board in the external MV
electrical box, if the relay power supply
comes from the circuit board’s +24V
connector.
P
Circulation pump. Not included in the delivery. The pump must be compatible
with the fluid used in the heat collection circuit, and its capacity must be
correct. (For example, Grundfoss 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.
L
Supply air thermometer. Not included in the delivery.
IP
De-aerator. Not included in the delivery.
S
External electrical box for the MV.
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.
DUCT RADIATOR OPERATION CHART
A
Ventilation unit
B
Supply air
C
Outdoor air
D
Feed from the distribution board
E
Air extraction
F
Duct radiator (reverse connection)
G
Heat pump
H
Heat collection circuit
TECHNIC
AL SPECIFIC
ATIONS
Содержание Vallox TSK Multi 80 MV
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