Setting the ventilation profile
As the default factory setting, TTC hoods have the following
fan control voltages:
Away: 2.5 VDC | At home: 5.0 VDC | Boost: 10.0 VDC
To adjust the control voltage:
Close the damper, turn off the lights, and select
the At home ventilation profile.
Press the settings button for roughly 3 seconds until the
setting mode signal light starts to flash. The signal light will
flash in a series of five flashes to indicate that the 5 VDC
control voltage is set.
Press the ventilation profile button. The signal light will flash
in a series of five one quick flashes (5.5 VDC).
Press the ventilation profile button. The signal light will flash
in a series of six flashes (6.0 VDC).
Press the ventilation profile button. The signal light will flash
in a series of six one quick flashes (6.5 VDC).
Keep on pressing until you reach the maximum voltage of 10
VDC. Next, press the ventilation profile button, which sets
the control voltage at 2.5 VDC. After this, the voltage will
increase by 0.5 VDC at a time.
Save the selected control voltage by pressing the settings
button until the signal lights flash. Saving the fan speed of the
At home profile also adjusts and saves the fan speed of the
Away and Boost profiles.
The efficiency of the Away and Boost profiles can also be
adjusted separately. In this case, adjusting only affects the
profile that is selected. The profile that is to be adjusted
needs to be selected when moving to the setting mode.
Alternatively, the control voltage
can be controlled using a general
meter. For that purpose, there are
probes at the bottom of the filter
enclosure (see figure).
MANU
AL
D
39
32
/1
9.
12
.20
18
Measuring and adjusting
performance values
dp
External electrical connection
0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160
0
50
100
150
200
250
300
350
400
450
3 = 10.6 V
3 = 7.4 V
2 = 5.3 V
1 = 2.7 V
Adjustment position = control voltage
Pressure difference between exhaust and extract air ducts p
F
, Pa
Exhaust air flow, dm
3
/s
0
10
20
30
40
50
0
20
40
60
80
100
8
6
4
3
2
8
6
4
3
2
Open
Adjustment position of the fan
1 = 2.7 V
Adjustment position of the fan
2 = 5.3 V
Adjustment position
of the damper
Open
Exhaust air flow
, dm³/s
Pressure difference between exhaust and extract air ducts p
F
, Pa
2 = 2 holes open/damper
3 = 3 holes open/damper
4 = 4 holes open/damper
Boost air flow (with the damper open)
Standard air flow (with the damper closed)
6 = 6 holes open/damper
8 = 8 holes open/damper
Standard ventilation
adjustment position
Standard ventilation
The volume flow rate of the air inside the
house extraction fan is measured with
the damper closed and, where required,
adjusted based on the static pressure
loss and the performance scheme of the
house extraction fan.
• Measure the static pressure loss from
the hole in the damper using the
measuring tube found in the accessory bag (see figure).
• Determine the volume flow rate from the performance scheme
based on the measured pressure and the number of open holes in
the damper.
Adjustment:
• Cover the required number of holes in the damper with the
magnetic strip that is delivered with the house extraction fan.
Boost ventilation
The volume flow rate of the air inside
the house extraction fan is measured
with the damper open based on
the static pressure loss and the
performance scheme.
• Measure the static pressure loss
of the house extraction fan. The
measuring point must be located
2 times the duct diameter above
the outlet collar of the house
extraction fan (see figure).
• Determine the volume air flow based on the measured pressure
and the performance scheme (with the damper open).
ALARM
TACHO
GND
PWM
OPT
+ -
DAMP
IN OUT
MODE
IN OUT
F ALARM
RS 485
A B GND
N
L
DAMPER
1 2 3
LIGHT
N L
FAN
N L
FAN
IN OUT
PE
Connector
Pot. free contact data
24 VDC / 5 A
*L
LA
: damper open – contact closed
damper closed – contact open
EXTRA
POSITION OF THE FLAP
*L
LA
CONTACT DATA
GUARD FUNCTION
CONTACT DATA
dp
Measuring point,
min. 2 x duct diameter
Vallox Oy | Myllykyläntie 9-11 | 32200 LOIMAA | FINLAND | www.vallox.com
Customer S358 10 7732 200 | Afte358 10 7732 270
