5
Vallox
121
MC
© VALLOX • We reserve the right to make changes without prior notice.
What the units include can vary depending on the sales area.
Dimensions and duct outlets
Duct outlets
Inner diameter of female
outlet collar
1. Supply air to the dwelling
2. Extract air from the dwelling
to the unit
3. Outdoor air to the unit
4. Exhaust air out
Measuring points
Measuring points after the connection outlet.
Fan curves indicate the total pressure available
for duct losses.
Input powers of fans
Fan control
voltage
(V)
Extract
air flow
(l/s)
Combined
input power
of fans
W
4
25
18
5
36
27
6
45
37
7
56
56
8
70
81
9
83
116
10
93
159
11.2
104
215
Supply/extract air flows
Sound values
P = Extract air fan
T = Supply air fan
Input power (total) (W)
Air flow (max) (dm
3
/s)
SFP =
SFP (Specific Fan Power) recommended value <2.5 (kW m
3
/s)
At a lower total pressure, SFP will be smaller at the same speed
Sound power level in supply air duct (one duct)
by octave band L
W
, dB
Sound power level in extract air duct (one duct)
by octave band L
W
, dB
ADJUSTMENT POSITION/AIR FLOW dm
3
/s
ADJUSTMENT POSITION/AIR FLOW dm
3
/s
Adjustment position
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.2
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.2
Air flow dm
3
/s
17.2
29.4
39.8
51.1
65.6
73.1
78.9
91.6
25.2
35.5
44.9
56.3
61.9
75.6
82.6
94.5
Medium
frequen-
cy of the
octave
band Hz
63
63
72
73
77
80
83
84
87
51
54
57
60
64
64
68
71
125
53
59
63
66
69
73
75
79
44
48
51
55
59
62
64
67
250
45
50
53
57
62
65
68
70
38
41
43
49
53
56
58
60
500
40
45
47
51
55
58
61
63
26
32
34
38
42
45
48
50
1000
39
46
49
54
57
59
60
62
22
27
30
34
37
39
42
43
2000
32
40
45
51
55
58
61
64
*
18
22
27
31
34
36
39
4000
18
29
35
41
46
50
52
55
*
*
*
14
19
24
27
29
8000
*
*
22
31
38
42
45
49
*
*
*
*
*
*
*
*
L
W
,dB
L
WA
, dB(A)
63
72
73
78
80
83
85
88
52
55
58
61
65
67
70
73
44
51
55
59
63
65
68
70
32
36
39
44
47
50
53
55
Sound pressure level coming from the unit through
the envelope in the rooms where the unit has been installed
(10m
2
sound absorption)
Vallox 121 MC
ADJUSTMENT POSITION/AIR FLOW dm
3
/s
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.2
24/26 33/34 40/42 50/51 62/62 71/71 82/82 92/92
L
pA
, dB (A)
26
30
32
35
40
42
45
47
Pressure loss in ducts. T
otal pressure
TECHNICAL DATA
70 mm installation space
Model: L
Model: R
The figure shows the R model
Extract air
Supply air
E
S
Recommended
operating range
Volume flow rate
