EN
GL
ISH
operAtion
deVice description
HUV 1/2/65/80
| 11
3.3 Function
The 3-way switching valve is controlled using a servo or
lift drive.
Note
As well as the flow direction A – AB and B – AB which
is marked with an arrow on the housing, the opposite
direction AB – A and AB – B is also permitted in STIEBEL
ELTRON or Tecalor heat pump systems.
Flow direction
A
AB
B
A
AB
B
HUV 1 | HUV 2
HUV 65 | HUV 80
AB
A
B
AB
A
B
C2
6_
03_
01
_0
99
8
HUV 1 | HUV 2
only: The servo drive is constantly regulated by a
control system and moves the ball of the 3-way switching valve,
that acts as a restrictor, to the position specified by the actuator
signal. The valve opens by turning clockwise and closes by turning
anticlockwise (factory setting).
HUV 65 | HUV 80
only: The lift drives are regulated by a 3-point
control system and move the closing element, which acts as a
mixer, to the opening position defined by the actuator signal.
3.4 Dimensions, distances and connections
3.4.1 3way switching valves
Dimensions and flanges for HUV 1 | 2
H
min.
X
L
min. Y
D
B
C2
6_
03
_0
1_
09
95
Dimensions and flanges for HUV 65 | 80
L
H
B
min.
X
C
min. Y
D
K
d
C2
6_
03_
01
_0
99
6
dimensions
HuV 1
HuV 2
HuV 65
HuV 80
L mm84.5
131,5
290
310
H mm46
56
100
110
B mm47.5
71.5
120
130
D
DN 25
25 mm
(1 inch)
G1
1
/
2
DN 50
50 mm
(2 inches)
G2
3
/
4
DN 65
160 mm
DN 80
190 mm
C mm–
–
16
18
K mm–
–
130
150
d mm–
–
4 x 14
4 x 18
distances*
X mm240
240
515
515
Y mm90
90
100
100
* Distances in relation to the centre of the valve
