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REMKO KWK ZW serie Manual

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8 Before commissioning
Anti-freeze protection for the medium
If a water-glycol mixture is used, it is to be pre-
mixed before being put in the system. The desired
concentration is then to be checked.
Bleeding the system
nAir may still be in the pipe lines after the leak
testing. This is carried during operation of the
circulation pump to the automatic bleeding
valves or to the cold water drain. In this case it
is necessary to bleed the system again.
nThe non-circulating pressure must then be
adjusted to the required system pressure.
NOTICE!
During manual bleeding, any glycol mixtures
which escape must be disposed of separately.
Do not feed them into the condensate tray!
Diaphragm expansion vessel
nThe preliminary pressure for the diaphragm
expansion vessel must be adjusted individually
to the system layout, the volume of the medium
and the installation site.
Valves for hydronic balancing
nThe calculated excess pressure in the pipe net-
work layout at the individual cold water outlets
must be adjusted with the valves for hydronic
balancing.
Safety valve
nThe safety valves and their correct function
must be checked.
nThe drain line for the valves is to be checked
for function and leak tightness.
9 Commissioning
NOTICE!
Commissioning should only be performed by
specially trained personnel and documented
after the certificate has been issued.
NOTICE!
Observe the manuals for the unit and all other
components when commissioning the entire
system.
Function test for cooling operating mode
1. Switch the power supply on.
2. Open all shut-off valves if necessary.
3. Switch on the chiller and the corresponding
circulation pump. The outlet temperature
must be between +4 and +18 °C.
4. Use the controller to switch on the unit and
select the cooling mode, maximum fan speed
and lowest target temperature.
5. Measure and record all the required values in
the commissioning report and check the
safety functions.
6. Check the unit control system using the func-
tions described in the "Operation" chapter.
7. Check that the condensate drainage line is
functioning correctly by pouring distilled
water into the condensate tray. A bottle with
a spout is recommended for pouring the
water into the condensate tray.
Function test of heating operating mode
1. Switch the power supply on.
2. Open all shut-off valves if necessary.
3. Switch on the heating system and the corre-
sponding circulation pump. The outlet tem-
perature must lie between +35 and +70 °C.
4. Use the controller to switch on the unit and
select the heating mode, maximum fan
speed and highest target temperature.
5. Measure and record all the required values in
the commissioning report and check the
safety functions.
6. Check the unit control system using the func-
tions described in the "Operation" chapter.
27
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REMKO KWK ZW serie User Manual - German - 40 pages

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