Uniflair Aquaflair 00182, Instruction Manual

Page: 27 / 48

27
CHECK LIST FOR START-UP AND TESTING
After installation and before start-up the following points should be checked. In the event of problems, consult
the troubleshooting section in this manual or contact the technical assistance staff at UNIFLAIR
1) CLOSE the general switch and arm the automatic switches IM1, IM2, e IM8;
2) SELECT LOCAL OR REMOTE CONTROL
The unit can be turned on and off by a remote ON/OFF switch connected to terminals 10 and 50.
There is a 3-position SLR local/remote selector on the cover of the electrical panel:
a) Default position is “ L ” – local control of unit; summer/winter switching must be done with the SEI
selector in the electrical panel.
b) If the unit has a remote control switch connected to terminals 10 and 50, the selector must be set
to “ R ”: unit in stand-by with remote on/off control activated and local summer/winter control
deactivated. For remote summer/winter switching, connect a remote switch with potential-free contact
to terminals 10 e 51
c) in the “ 0 ” position the unit is off.
SLR SEI
II = Remote
I = Local
0 OFF
Cooling
Heating
3) SUMMER/WINTER FUNCTION MODE SELECTION :
On heat pump units the ‘SEI’ switch in the electrical panel is used to select::
- Summer mode
(cooling);
-
Winter mode (heating).
(see microprocessor control instruction manual).
The ‘SEI’ selector is only active when the ‘SLR’ selector is set to Local (see point 2. ). In cooling-only
versions the summer/winter selector is on the electrical panel cover but does not function.
4) OIL HEATING
(standard on heat pump versions, optional on cooling-only versions)
Connect the unit to the power supply at least 12 hours before the seasonal start-up of the system in
order to heat the compressor oil sufficiently. The reason for this is that during longer shutdowns there
may be a spontaneous migration of refrigerant with re-condensation of liquid in the compressor
crankcase heaters. When the compressor is started this liquid can flow into the cylinders, damaging
the compressor. The pre-heating of the oil is necessary to eliminate this risk. Do not switch off the
power supply for weekly shutdowns.
AT LEAST 12 HOURS after the power supply was connected, start the unit as follows:
5) OPEN all valves and water intercept taps;
SWITCH ON the water circulation pump and check correct function;