OPERATION AND MAINTENANCE MANUAL
Wall Mounted 0121…0661
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Monobloc Wall Mounted Unit - WMA/WMF 0121-0181-0251-0281-0331-0551-0661 - Rev. 2.0. - Date: 18-07-2000 EN
Family
Unit
Function
Model
Number of
Version
Control
type
mode
Compressors
System
W: wall
M: monobloc
F: mech.+ free. cooling
C: Basic version
W: mP20W
mounted
A: mech. cooling only
T: With electric re-heat
microprocessor
W
M
F
066
1
T
W
GENERAL DESCRIPTION
DOCUMENTATION ENCLOSED WITH THE UNIT
Every unit is supplied complete with the following documents:
•
Unit instruction manual
•
Microprocessor control instruction manual
•
Electrical
diagrams
•
Spare parts list
•
CE declaration listing the directives and norms to which the unit conforms
•
Guarantee
certificate
UNIT DESCRIPTION AND INTENDED USE
The WM is an autonomous monobloc direct expansion air conditioning unit with air-cooled condenser, designed for
the air conditioning of telephone exchanges, shelters and technological applications. The unit is pre-charged and
tested in the factory and has its own built-in condenser. Installation consists of simply fixing the unit to the wall,
connecting the air ducting and making the electrical connections.
All essential components can be inspected and removed from the front (with the exception of the damper motor in
WMF units from 0121 to 0331), in multiple installations units can therefore be fitted very close together
(see
installation manual)
.
ACTIVE SAFETY
The control system provides monitoring and prevention functions via:
•
Function status indication
•
Continuous reading and display of the temperature measured by the sensors
•
Indication of fault and alarm situations
•
Automatic stopping of unit components in the event of risk
•
Compressor management to reduce start-up frequency.
PASSIVE SAFETY
The essential functions of the units are protected against faults and potentially dangerous conditions; WM units are
fitted with:
•
High and low-pressure pressostats to protect the refrigerant circuit (HP with manual re-set)
•
Low airflow differential pressostat
•
Dirty filter differential pressostat (optional)
•
Safety thermostat on units with electric heater
•
Compressor electric motor protection
•
Phase sequence relay on units with 400V/3N/50Hz power supply (models 0331 to 0661).
PERSONAL SAFETY
The design and wiring of Uniflair air conditioning units conform to 73/23/CEE. The electrical panels are equipped
with an auxiliary 24V circuit and include individual short circuit protection using automatic circuit breakers. The axial
fans are protected by metal grilles.
