Stiebel Eltron HUV 1 Utilisation Et Installation page 11

operAtion
deVice description
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
HUV 1 | HUV 2
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.
HUV 1/2/65/80
HUV 65 | HUV 80
A
AB
B
A
AB
B
3.4 Dimensions, distances and connections
3.4.1 3­way switching valves
Dimensions and flanges for HUV 1 | 2
L
Dimensions and flanges for HUV 65 | 80
L
dimensions HuV 1
L mm84.5
H mm46
B mm47.5
D DN 25
25 mm
(1 inch)
1
G1 /
2
C mm–
K mm–
d mm–
distances*
X mm240
Y mm90
* Distances in relation to the centre of the valve
min. Y
B
min. Y
C
HuV 2 HuV 65 HuV 80
131,5 290 310
56 100 110
71.5 120 130
DN 50 DN 65 DN 80
50 mm 160 mm 190 mm
(2 inches)
3
G2 /
4
– 16 18
– 130 150
– 4 x 14 4 x 18
240 515 515
90 100 100
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