Kemper KHS CoolFlow 618 01 001 Manuel D'utilisation page 61

Connection of the medium
piping
The connection of the lines
■
on-site takes place on the front
side of the unit (operating side).
For the purpose of servicing,
■
connections must be equipped
with shut-off valves and me-
dium flow rate adjusted using
valves for hydronic balancing.
It is recommended that addi-
■
tional automatic bleed valves
are provided in the supply and
return flow at the highest point
of the installation.
The medium piping shall not
■
exert any structural load on the
unit.
The pipe connections may not
■
generate any thermal or me-
chanical stresses on the unit
(cool pipes or hold in place with
a second tool if required).
If the unit is at first to be
■
operated with only a part of
the entire system, the medium
flow rate for the missing system
components is to be simulated
using valves for hydronic balan-
cing.
The pipe sizing is to be desi-
■
gned such that the stipulated
minimum flow volume is achie-
ved.
Medium piping
Medium piping can be made of
copper or stainless steel. To mini-
mise pressure losses, only stream-
lined fittings should be used.
When designing the layout, the
large flow volumes in cold water
systems, high pressure losses in
connection with water-glycol mix-
tures and the cold water genera-
tor's minimum flow volume must
be taken into account.
The lines are to be insulated
against vapour diffusion and, if
necessary, the current German
energy-saving ordinance (EnEV)
must be observed. UV resistance
must be realised outdoors.
Minimum/maximum flow volume
The chiller's circulation pump
generates a constant medium flow
rate.
The medium flow rate is deter-
mined by the pressure losses of
the piping system (fittings, bends,
pipes).
The differential pressure or flow
switch in the chiller measures the
pressure loss over the evaporator
or the flow of the medium and
switches the unit off if the flow
rate drops below the minimum
medium volume.
The medium flow rate limit may
likewise not be exceeded (maxi-
mum flow volume).
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Pressure and temperature displays
The pressure gauges to be provid-
ed and installed by the customer
serve to check the differential pres-
sure of the dirt trap. Temperature
probes are located in the chiller's
medium inlet and outlet. Probe
values can be queried via the
controller.
Valves for hydronic balancing
The medium flow rate can be
throttled to the nominal flow rate
by the valves for hydronic balanc-
ing, to be provided and installed
by the customer.
Fill and drain connection
Connections for filling, emptying
and flushing the pipe system must
be provided in an area safeguard-
ed from frost. Media containing
glycol are to be disposed of in
accordance with the local disposal
regulations.
- 07.2020 / K410061801001-00 - 61/44
EN