Function test of cooling operating mode
1.
Remove the protective caps from the valves.
2.
Start the commissioning procedure by briefly
opening the shut-off valves on the outdoor
unit until the pressure gauge indicates a
pressure of approx. 2 bar.
3.
Check all connections for leaks with leak
detection spray and suitable leak detectors.
4.
If no leaks are found, fully open the shut-off
valves by turning them anti-clockwise using a
spanner. If leaks were found, draw off the
refrigerant and rework the defective connec-
tion. It is imperative that the vacuum creation
and drying steps are repeated!
5.
Activate the main circuit breaker or fuse.
6.
Use the remote control to set the indoor
unit's target temperature to a value that is
lower than the existing room temperature.
Due to the turn on delay, the compressor
will start up a few minutes later.
7.
Switch the indoor unit to cooling mode.
8.
Check all regulating, control and safety
devices for function and correct adjustment
during the test run.
9.
Check the control of the indoor unit with the
functions described in the operating instruc-
tions: timer, temperature adjustments and all
mode settings.
Check the individual operating parame-
ters with the help of the display on the
outdoor unit as described in the "Func-
tional checks and test run" section, and
note the value in the commissioning log.
10.
Measure the overheating, external, internal,
discharge and evaporator temperatures and
record the test data in the commissioning log.
11.
Remove the pressure gauge.
12.
Proceed as previously described for all other
cooling cycles.
Final tasks
n
Use the remote control to set the target tem-
perature to the required value.
n
Re-install all disassembled parts.
n
Familiarise the operator with the system.
NOTICE!
Check that the shut-off valves and valve caps
are tight after carrying out any work on the
cooling cycle. Use appropriate sealant products
as necessary.
Probe description
T1
Room temperature probe for indoor unit
T2
Evaporator centre temperature probe for
indoor unit
T2B Temperature probe for suction pipe
(installed in the outdoor unit)
T3
Temperature probe for condenser outlet
T4
Temperature probe for condenser air inlet
T5
Temperature probe for heat gas line com-
pressor
Ts
Setpoint
Outdoor unit display
The digital display is located on the outdoor unit's
control board. This display can be used to show
the current operating status.
n
The display shows "- -" in standby
n
The display shows the current operating fre-
quency when the compressor is running
n
When defrosting, the display shows "dF" or
alternates between "dF" and the current com-
pressor frequency (0.5s each)
n
If the compressor is in the pre-heating function,
the display shows "PH" or alternates between
"PH" and the current compressor frequency
(0.5s each)
n
If the system's oil return function is running, the
display shows "RO" or alternates between
"RO" and the current compressor frequency
(0.5s each)
n
If winter fan speed control is active due to low
outside temperatures, the display shows "LC"
or alternates between the compressor fre-
quency and "LC" (0.5s each)
n
In “Force Cool Mode – Force Control”, the dis-
play shows "FC" or alternates between "FC"
and the current compressor frequency (0.5s
each)
REMKO series SKT
32
