Installation manual for automatic extract air valve
6
4. product description
Functional description
The automatic extract air valve HFA works with two volume
flow rates:
Basic volume flow rate
When the room to be ventilated is not in use, the damper
remains closed and only the basic volume flow rate V0 is
extracted. This basic volume flow rate V0 can be increased by
breaking out one or more plastic plugs in the damper.
Required volume flow rate
When the room to be ventilated is in use and the electro-ther-
mal damper actuator is activated by a switch contact typical
for this room, e.g. a light switch, the damper opens to the set
damper limit A, B, C or D in approx. 2-3 minutes. The volume
flow rate is thereby increased to the volume required. Once the
switch contact is interrupted, the damper remains open for ap-
prox. 5-10 minutes to ensure proper follow-up ventilation. The
damper then returns to its initial position and only the previous-
ly selected basic volume flow rate is extracted.
Dimensions
Special features of the HFA
- Depending on the building, heating energy
can be reduced by 10 – 30%
in terms of total consumption.
- The heating system can be designed to smaller dimensions.
- The automatic extract air valve HFA is suitable for use in all
buildings with
central extract air systems.
- The automatic extract air valve HFA works with two volume
flow rates:
Basic volume flow rate (can be selected)
Required volume flow rate (can be set)
- If required, the damper opens via an electro-
thermal actuator with an automatic delay (2-3 min.)
- To prevent contamination of the exhaust duct, there is
a fitted filter pad that can be easily replaced (commercially
available
filter).
- Assembly of the automatic extract air valve HFA is simple.
1
2
240
Ø 103
~52
5
163
~84
7
8
9
10
Ø 10
(13.5)
84
(97.5)
52
65.5
13.5
4
6
35
Ø 22
150
115
55
(35)
(90)
75
44
11
Typ:
HFA / ATVC / TKR
Volt:
230~
Watt:
8 (60)
AB CD
IP54
12
1
Main housing
2
Cover
4
Cable penetration (for flush mounting)
5
Cable feed-through (for surface mounting)
6
Electrical socket
7
Fixing holes
8
Junction box
9
Electro-thermal actuator
10
Damper with volume flow rate plugs
12
Pressure tap
1
2
240
Ø 103
~52
5
163
~84
7
8
9
10
Ø 10
(13.5)
84
(97.5)
52
65.5
13.5
4
6
35
Ø 22
150
115
55
(35)
(90)
75
44
11
Typ:
HFA / ATVC / TKR
Volt:
230~
Watt:
8 (60)
AB CD
IP54
12
