IVT PKS 1000, Installer'S Manual, Page: 20 / 36

Installation
6 720 642 838 (2010/03) 20
7.5.3 Condensation monitoring (accessory)
B
Install a humidity sensor (E31.RM1.TM1-5) near the
cooling station on the flow line pipe. When installing
with underfloor heating loops ( Chapter 3.1) a
humidity sensor can also be positioned on the flow
line pipe of the electrical distributor for heating/
cooling. The humidity sensors are connected to the de
point monitor in the cooling station. The dew point
monitor is an accessory and is placed between the
transformer and terminal block (X1) ( Image 17,
page 20).
Fig. 17
1 Dew point monitor
If several humidity sensors are fitted, they should be at
locations in the cooling distribution system where
humidity is most likely to form.
7.5.4 Three-way change over valve (accessory)
System solution ( Chapter 6.3.1 Chapter 6.3.2)
requires a three-way change over valve (E11.Q12), so
that the buffer tank does not cool down.
Fig. 18
In cooling operation the switch is closed, port A is open
and the buffer tank is bypassed. ( Image 19, page 20)
Fig. 19
In heating operation the switch is open, port B is open
and the buffer tank is used. ( Image 20, page 20)
Fig. 20
The three-way change over valve has a Molex switch.
Only terminals 2, 6 and 3 are used. ( Image 21, page
20)
Fig. 21
Condensation monitoring must be used for
system solutions with underfloor heating
( Image 9, page 13 and Image 10, page
14).
WARNING: The humidity sensor and the
pipe to which it is attached must not be
insulated.
6 720 615 125-29.1I
1
6 720 617 643-06.1I
6 720 641 553-06.1I
6 720 641 553-07.1I
6 720 617 643-10.2I
2
6
3 L
N
Y