General
•
The indicated operations should be done by qualified
technician with specific training on the product.
•
The service centres shall perform the start-up; the
electrical and hydraulic connections upon request; the
remaining work on the system is the responsibility of the
installer.
•
Agree upon the start-up date with the service centre
sufficiently in advance .
Preliminary cheks
Before checking, please verify the following :
•
the unit should be installed properly and in conformity with
this manual.
•
the electrical power supply line should be sectioned at the
beginning.
•
the line sectioning device is open, locked and equipped
with the suitable warning signs.
•
ensure no voltage is present .
After turning off the power, wait at least 5 minutes before
accessing to the electrical panel or any other electrical
component.
Before accessing check with a multimeter that there are no
residual stresses
Refrigerant circuit
Visually check the refrigerating circuit: the presence of oil
stains can mean leakage (caused, for example, by transport,
handling or other).
Check that the refrigerating circuit is under pressure:
•
use service pressure gauges to check that the refrigerant
circuit is pressurized
•
Ensure that all the service outlets are closed with the
proper caps; if caps are not present a leak of refrigerant is
possible.
Hydraulic circuit
•
Before realizing the unit connection make sure that the
hydraulic system has been cleaned up and the clearing
water has been drained .
•
Check that the water circuit has been charged and
pressurised .
•
Check that the cut-off valves on the circuit are in the
"OPEN" position.
•
Check that no air is present in the circuit, if required,
evacuate using the air bleeding valve placed at the
system and unit higher points (see water connections)
•
In case of using brine solutions verify that the percentage
is suitable for the type of use.
•
Calibrate the water flow-rate with the flow controller
(accessory).
Electrical circuit
•
Verify that the unit is connected to the ground plant .
•
Check tightening of the conductors: the vibrations caused
by handling and transport might cause loosing .
glycol by weight (%)
10
20
30
40
Freezing temperature (°C)
-4
-9
-15
-23
Safety temperature (°C)
-2
-7
-13
-21
7 - STAT-UP
•
Feed the unit by closing the sectioning device, but leave
it on OFF.
•
Check the tension and line frequency values which must
be within the limits:
230 / 1 / 50 +/- 6%
•
The working out of the limits can cause irreversible
damages and voids the warranty.
Voltage
Check that the air and water temperatures are included in the
working limits. For information on the control system, refer to
the paragraph "Control".
Start the unit
With unit of full load, namely in stable conditions and close to
those of work, check:
•
power supply tension
•
phase unbalance
•
total absorption of the unit
•
absorption of the single electric loads
Remote controls
•
Check that the used remote controls are wired and
enabled (ON/OFF etc…)
Thermostat personalization
•
Set hour and day
•
ECO and COMFORT set-point personalization
•
set the time band scheduling
Starting report
Reading the objective operating conditions is useful for
checking the unit over time.
With unit of full load, namely in stable conditions and close to
those of work, take the following data:
•
Tension and general absorptions with unit at full load
•
Absorption of varied electrical loads (compressors, fans,
pumps etc)
•
Temperatures and capacities of different liquid (water,
air) in the inlet and outlet of the unit.
•
Temperature and pressures on the characteristic points
of the refrigerating circuit (compressor discharge, liquid,
intake).
•
The readings should be stored and made available during
maintenance .
CE 97/23 PED Directive
97/23 EEC PED DIRECTIVE provides instructions for
installers, users and maintenance technicians as well. Refer
to local actuation norms; briefly and as an example, see the
following :
•
Obligatory testing of first system:
only for the units assembled on site be installer (e.g.
condensate unit + direct expansion unit)
•
Commissioning declaration:
for all units
•
Periodic checks:
to be carried out with the frequency indicated by the
Manufacturer (see the MAINTENANCE section) .
7.1 PRILIMINARY INFORMATION
Summary of Contents for DFO 5 - 9 - 17
Page 17: ...6 ELECTRICAL CONNECTIONS 6 3 ELECTRIC PANEL SIZES 5 9 ELECTRIC PANEL SIZES 17 X1 X1 A B A B C2...
Page 24: ...6 ELECTRICAL CONNECTIONS...
Page 43: ...NOTES...
Page 44: ...NOTES...
