Description of operation VALLOX 70 COMPACT / VALLOX 70K COMPACT
Control of operation
Power supply to the VALLOX 70 COMPACT unit is controlled
with the 0/1 switch in the distribution panel. There is also a
maintenance switch
HK
inside the unit.
VALLOX 70K COMPACT is equipped with a plug. There is
also a maintenance switch
HK
inside the unit.
Fan speed adjustment
The
S
and
E
fans of the unit are controlled depending on
operating conditions with a separate 4-step (1, 2, 3 and 4)
switch
HS
located in the ventilation zone, or with a cooker
hood.
Heat recovery bypass
Summer-time bypass of the heat recovery cell
HR
is done
manually by turning the
HR
damper
H
in the bypass position
for the summer.
Supply air temperature
Regulating thermostat
T1
controls the operation of the electric
radiator
JL
, keeping the supply air going out from the unit at
the setpoint.
Preheating of outdoor air
Regulating thermostat
T2
controls the operation of the electric
radiator
EL
as follows: the radiator heats outdoor air before
the cell and prevents the heat recovery cell from freezing. In
very cold temperatures the preheating radiator
EL
is not enough
to heat maximum air flow to a sufficient degree (in a temperature
of minus 30 degrees, maximum air flow is 30 dm
3
/s, which
corresponds to speed 2 or 3). The threshold of thermostat
T2
can be adjusted inside the unit.
Heat recovery defrosting
(alternative to preheating radiator)
The anti-freezing thermostat
T2
of the
HR
cell keeps stopping
the supply air fan
S
, thereby preventing the risk of the freezing
of the
HR
cell. The fan starts automatically as soon as the risk
of freezing has passed. The threshold temperature of freezing
risk can be set at thermostat
T2
.
Fireplace switch function
The unit can be equipped with an optional fireplace switch
FS
. It can be a timer equipped with opening points. Timing
period can be 15…30 minutes.
Alarms
Pressure difference switch
PDS
is an optional device for controlling
pressure difference on the supply air side. If the pressure
difference rises above the setup, because of dirty filters or
clogged ducts, an indicator is lit on the front panel of the unit.
Parts list VALLOX 70 COMPACT/VALLOX 70K COMPACT
© VALLOX • We reserve the right to make changes without prior notification.
What the units include can vary depending on the sales area.
DESCRIPTION OF OPERATION
7
VALLOX 70 COMPACT
Code
Name
Technical details
Standard
/ Option
G4
Filter, extract air and supply air G4
Standard
F7
Fine filter, supply air
F7
Standard
H
HR bypass damper
Manual
Standard
HS
Speed adjustment
4-step switch Standard
Standard
VALLOX 70 Compact
or cooker hood
Option
HS
Speed adjustment
Cooker hood
Standard
VALLOX 70K Compact
EL
Preheating radiator
Elecctric, max 0.9 kW
Standard
JL
Post-heating radiator
Elecctric, max 0.9 kW
Standard
HR
Heat recovery cell, pair
efficiency ~75 %
Standard
S
Supply air fan
105 W 56 dm
3
/s 50 Pa
Standard
E
Extract air fan
105 W 65 dm
3
/s 50 Pa
Standard
HK
Maintenance / safety switch
Door switch
Standard
T1
Regulating thermostat
0…40 ºC
Standard
T2
HR defrost thermostat
Factory s4 ºC
Standard
FS
Fireplace switch
Opening points
Option
15…30 minutes
PDS
Pressure difference switch
Adjustment range 0...500 Pa Option
Pressure guard for
Factory setting 190 Pa
the supply air side
