51
MU ECHOS A
INSTALLATIONS RECOMMENDATIONS
LOCATION
Strictly allow clearances as indicated in the catalogue.
Please check that there isn’t any obstructions on the suction of
the finned coil and on the discharge of the fans
Locate the unit in order to be compatible with environmental
requirements (sound level, integrationinto the site, etc.).
ELECTRICAL CONNECTIONS
Check the wiring diagram enclosed with the unit, in which are
always present all the instructions necessary to the electrical
connections.
Supply the unit at least 12 hours before start-up, in order to
turn crankcase heaters on. Do notdisconnect electrical supply
during temporary stop periods (i.e. weekends).
Before opening the main switch, stop the unit by acting on the
suitable running switches or, if lacking, on the remote control.
Before servicing the inner components, disconnect electrical
supply by opening the main switch.
The electric supply line must be equipped with an automatic
circuit breaker (to be provided by theinstaller.
HYDRAULIC CONNECTIONS
Carefully vent the system, with pump turned off, by acting
on the vent valves. This procedure is fundamental: little air
bubbles can freeze the evaporator causing the general failure
of thesystem.
Drain the system during seasonal stops (wintertime) or use pro-
per mixtures with low freezing point. Incase of temporary stop
periods an electric heater should be installed on the evaporator
and hydraulic circuit.
Install the hydraulic circuit including all the components indica-
ted in the recommended hydraulic circuitdiagrams (expansion
vessel, flow switch, strainer, storage tank, vent valves, shut off
valves, flexibleconnections, etc.).
Connect the flow switch, which is furnished on all units, not
fitted. Follow the instructions enclosed with the units.
START UP AND MAINTENANCE OPERA-
TIONS
Strictly follow what reported in use and maintenance manual.
All these operations must be carried on by trained personnel
only
.