4
· AO Model
Coaxial condenser with counter flow circulation,
equipped with finned copped tube in a steel
cover.
Pressure valve on the water inlet for reducing
water consumption to a minimum (wasted water
model).
On request, the unit is supplied without a pres-
sure valve but with an additional Schrader valve
connection for independent control of the water
flow (recycled water model).
AR Model
Shut off valves on indoor unit and outdoor
condensing unit (UC) for refrigerant pipes.
Outdoor condensing unit with copper tube and
aluminium fins.
3.4 Ventilation / Filters
Blower equipped with two, direct drive, centrifugal
fans with double air intakes.
Standard 3 speed fan motor (VS) switchable from
the electrical terminal box (refer to electrical con-
nections).
Specific High Speed Ventilation (FV) motor
available as an optional extra.
Cooling fan assembly mounted on a sliding
chassis with anti-vibration seals for easy mainte-
nance.
M1 flame retardant re-usable filters, made of
synthetic fibres, with a metal frame and protective
grille.
UC single phase, 400 V/230 V dual voltage
switchable fan motors.
Ventilation coil for UC with direct drive and low
speed of rotation.
3.5 Electricity / Safety
Manufactured in large series, these air conditioners
undergo numerous controls during fabrication and
are systematically tested before delivery. Safety
devices effectively protect this equipment :
Protection of the compressor with fuses, thermal
relay and electronic anti- short cycle timer.
Protection of the integrated heater (accessory) with
fuses and dual automatic and manual reset
overload protection devices.
Fuses on the control circuit.
Protection of the fan motors (VS and FV) by fuses
and an internal safety device.
Low pressure pressostats with automatic reset and
high pressure pressostats with manual reset.
Solenoid shut off valve on the liquid line.
Basic casing resistors on all models.
Protection of the UC fan motor with internal ther-
mostat.
Mains power supply 3 N ~ 400 V 50 Hz as stan-
dard and 3 ~ 230 V 50 Hz as an option.
Terminal block for single phase 230 V power supply
to the control circuit with a 400 V / 230 V transfor-
mer (not supplied) if the neutral wire is not
available.
3.6 Control / Regulation
Fascia strip grouping the controls (Main ON/OFF
switch with control light Heating ON/OFF and
Cooling ON/OFF) and the regulation (inverting
thermostat).
Automatic cooling/heating with neutral zone ther-
mostat supplied with the integrated electric heater
accessory.
Anti-short cycle time delay on compressor(s).
Location available in the electrical compartment
to house Staëfa-Klima type regulation modules
(not pre-wired, not supplied).
ALL SEASONS system (accessory).
4. AFTER SALES SERVICE / MAINTENANCE
CAUTION
Procedures for working on the cooling
circuit, and the technical charac-
teristics, are different from the R22.
Consult the corresponding instructions
and follow the recommendations when
carrying out any work.
Access to the air filters is from the front, after removal
of the air intake grille.
All the refrigeration, electrical and ventilation devices
are easily accessible from the front of the unit, after
removal of the front panels.
The design and manufacturer are french meaning
that spare parts availability is fast and easy.
Every accessory is supplied with fitting instructions
(and adjustment instructions, if necessary).
The technical data, installation instructions, mainte-
nance and operation instructions, exploded views
and spare parts lists are available on request .
