operAtion
instAllAtion
12 |
HUV 1/2/65/80
3.4.2 Servo drives
Dimensions HUV 1 | 2
(33)*
(117)*
(86)*
(93)*
R65
(177)*
25
103
84
71
134
110
72
205
179
55
HUV 1 | HUV 2
HUV 65 | HUV 80
C2
6_
03_
01
_0
99
7
Dimensions HUV 65 | 80
45
193
160
98
150
D
00000
38
08
3
* Values in brackets are for HUV 1.
4. Installation
4.1 Installation position
The 3-way switching valves can be installed either vertically or
horizontally.
!
Beware of damage
The 3-way switching valves may not be installed sus-
pended, i.e. with the tappet facing down.
Permissible installation positions
90°
90°
C2
6_
03_
01
_0
99
8
4.2 Hydraulic connection
!
Beware of damage
The conditions in VDI 2035 regarding water quality must
be complied with. So that the 3-way switching valve con-
trols the flow for a long time, we recommend the use of
contamination filters.
!
Beware of damage
Make sure the ball is correctly positioned in
the 3-way switching valve (note the mark on
the spindle).
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.
A
AB
B
A
AB
B
A
AB
B
A
AB
B
26
_0
3_
01
_0
99
9
