oventrop Hydromat DP DN 20, Operating Instructions Manual

Page: 26 / 40

Heat meter connection set
Removal and disposal
9. Removal and disposal
When the product reaches the end of its
service life or has an irreparable defect, it must
be dismantled and disposed of in an
environmentally friendly manner or the
components must be recycled.
NOTICE
Risk of environmental pollution!
Incorrect disposal can lead to environmental
damage.
!
Dispose of packaging material in an
environmentally friendly manner.
!
If possible, recycle the components.
!
Dispose of components which cannot
be recycled according to the local
regulations.
10. Appendix
10.1 Installation of the heat meter
Commercially available heat meters with
flat sealing connections are suitable.
When sizing your pump, bear in mind that
the pressure loss in the system increases
when a heat meter is used.
Length
Nominal size of the
external thread
110 mm G 3/4
130 mm G 1
Reducers are required for heat meters with
a length of 110 mm.
1.
Shut off the differential pressure regulator
(position
5
in Fig. 1 on page 20 or in
Fig. 2 on page 20).
2.
Shut off the ball valve for the return pipe
(position
1
in Fig. 1 on page 20 or in
Fig. 2 on page 20).
3.
Loosen the couplings at the heat meter
spacer (position
3
in Fig. 1 on page 20
or in Fig. 2 on page 20).
4.
Remove the heat meter spacer.
5.
If you are using a heat meter with a length
of 110 mm, remove the reducers from the
heat meter spacer and fit them to the heat
meter.
6.
Clean the connections if necessary.
7.
Mount the heat meter between the
couplings.
Use new flat seals.
8.
Tighten the couplings.
9.
Lead seal the housing of the heat meter
and the union nut of the coupling.
10.
Set the differential pressure regulator.
11.
Open the ball valve for the return pipe.
12.
Bleed the system (see par. 7.1 on page
25).
13.
Check the tightness.
Z
The system is ready for operation.
26 140488480-V01.10.2021