Once the connection has been
established successfully, the leak
test is carried out.
1. Flush the system twice
with tap water.
2. Clean the sieve insert
on the dirt trap.
3. Fill the system with water
again and bleed the unit
at the manual bleed valves.
4. Adjust the test pressure
to at least 200 kPa (2.0 bar).
5. Check the connections after
a period of at least 24 hours
for leaking water. If water
is visible, the connection has
not been established properly.
Tighten the connection
or establish a new connection.
6. After a successful leak test,
remove the excess pressure
from the medium piping
if a water-glycol mixture is used
or adjust the non-circulating
pressure to the required system
pressure.
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
■
Air may still be in the pipe
lines after the leak test.
This is carried during operation
of the circulation pump to the
automatic bleeding valves
or to the cold water drain. It is
necessary to bleed again here.
■
The non-circulating pressure
must then be adjusted to the
required system pressure.
DEV
■
The 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
■
The calculated excess pressure
in the pipe network layout
at the individual cold water
outlets must be adjusted
on the pipe leg regulating
valves.
Safety valve
■
The safety valves and their correct
function must be checked.
■
The drain line for the valves is
to be checked for function
and leak tightness.
Configuration setting
■
Before the electrical voltage is
applied to the unit for the first
time, the settings described
in the "Configuration" chapter
must be made according
to the use.
During manual bleeding,
escaping glycol mixtures
must be disposed of separately.
Do not feed them into the
condensate tray!
NOTE
Leak testing
Manual bleeding
Manual bleeding
Manual drainage
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
b4 and +18 °C.
4. Use the remote control
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 functions 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.
■
Commissioning should only be
performed and documented
by specially trained personnel.
■
Observe the manuals for the
unit and all other components
when commissioning the entire
system.
■
Commissioning should only be
performed and documented
by specially trained personnel.
■
Observe the manuals for the
unit and all other components
when commissioning the entire
system.
Commissioning
31
