2. The following only applies to
commissioning in summer
(cooling mode):
Press
C
repeatedly unto the LED
below symbol "
b
" (cooling mode)
illuminates (see page 23):
&
The LED next to symbol "
B
"
(compressor) flashes.
The compressor starts after a
start-up delay of 6 minutes (stan-
dard setting).
&
The unit is operational.
3. The following only applies to
commissioning in winter
(heating mode):
Press
C
repeatedly unto the LED
below symbol "
c
" (heating mode)
illuminates (see page 23):
&
The LED next to symbol "
B
"
(compressor) flashes.
The compressor starts after a
start-up delay of 6 minutes (stan-
dard setting).
&
The unit is operational.
Adjusting parameters HEA and H31
1.
Disable the heating curve; for this,
set parameter H31 to "0".
Note
For a description of the adjustment
of parameters and the code, see
from page 30.
2.
Raise the return temperature; for
this, change parameter HEA (see
page 31).
As the units are reverse controlled,
select a value approx. 5 °C lower
than the required flow temperature.
Adjusting the throughput in the hydraulic circuit
The pump rate of the internal pump of
the hydraulic circuit can be adjusted
to ensure the required minimum
throughput. This is made in accor-
dance with the system pressure drop
via the three-stage speed selector of
the pump. In the delivered condition,
the pump is set to the highest stage
(3).
1.
Note
For this test, pressure gauges must
be fitted to the flow and return of
the hydraulic circuit.
As an alternative, pressure gauge
connectors must be available.
When a load of at least 60% is
drawn, check the pressure at the
return (p2) and the flow (p1) of the
unit.
Further details regarding the individual steps
(cont.)
15
Commissioning, inspection, maintenance
5692
695
GB
Summary of Contents for OC208HM
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