3
INTRODUCTION
1. DEFINITION
The
X 2450
and
X 3250
packaged air conditioners
are presented :
Single packaged for the
WATER
cooled models
(
AO
),
with a separate outdoor condensing unit for the
AIR
cooled models (
AR
).
The air intake and discharge is provided :
either directly by air intake grilles and a discharge
plenum (accessory),
or by ducts for intake and/or discharge, to be
connected to the connection flanges (accessory).
This well-finished, single packaged unit combines
many features such as easy installation, high
efficiency, quiet operation and reliability, which make
it well suited for air conditioning, dehumidification
and air filtering in offices, stores and industrial
premises.
These packaged air conditioners can be equipped
with the following accessories :
Electric heater (integrated),
Hot water coil,
A 4-stage thermostat to be integrated,
A 4-stage remote control thermostat,
A double-deflection discharge plenum,
90% gravimetric air filters.
They benefit from 30 years experience and are
perfectly suited to working with :
Wasted water; its consumption being reduced to
a minimum by a pressure valve (included in the
AO
-wasted water model).
Recycled water; supplied by a cooling tower or an
outdoor heat exchanger.
Outside air with the possibility of operating at very
low temperatures (down to 10°C with the ALL
SEASONS option on the
AR
models).
2. MAIN DATA
Cabinet with reduced floor dimensions.
Standard ventilation :
Basic with drive motor and transmission by
ajustable pulley/belt.
High ventilation equipment available as option
providing a greater available pressure.
Vertical blowing with duct or plenum (accessory).
Two air intake possibilities :
On the front with grilles or on the rear with ducts,
with the rear air intake (accessory).
Heat lagged filters M1, regenerable, mounted on
metal frame : 2 efficiency ratings, 83 ou 90%
gravimetric.
Electrical, hydraulic and refrigerant connections
on right or left.
Cooling by wasted water with pressure controlled
valve or by recycled water without valve.
Possibility of running in cooling mode down to an
outdoor temperature of 10° C for the
AR
models
with the ALL SEASONS accessory.
Two heating possibilities (accessories) :
basic built-in
(see 14, "CONTROLS AND REGULATION",
to be built-in as an accessory with 4 stages and
a neutral zone,
with remote control, as an accessory, with 4 sta-
ges and a neutral zone.
Two control possibilities (accessory):
Integrated electrical heating coils or hot water
heating coils.
Two refrigerant connection pipe possibilities (
AR
models): up to 25 m maximum with factory pre-
charged pipes (accessory) or with pipes brazed
and charged on site (set of female valves supplied
as an accessory for connections up to 45 m).
3. DESCRIPTION
3.1 Bodywork
Panels and side faces made of profiled sheet steel
covered with enamel finish, baked in a high
temperature oven.
Intake grilles made of modular elements in
flameproof, shock resistant polystyrene, classified
UL-VO according to UL94.
3.2 Insulation and protection
Thermal and acoustic insulation of the unit.
Watertight unit base for the possible collection of
condensates or abnormal overflowing (e.g.
condensate drain tray clogging).
3.3 Refrigerant circuit
All models
Simple refrigerating circuit, each including :
Hermetic type compressor fitted with thermal and
electrical protections, linked to a factory sealed
and brazed cooling circuit.
Pressostats and high and low pressure measu-
rement Schrader valves.
Copper tube evaporator with aluminium fins and
anti-corrosion protected condensate tray.
· AR / AO Model
Reserve liquid receiver.
Thermostatic pressure reducer with pressure
balancing.
Liquid indicator and valve on liquid line.
" When the HCFC fluids are replaced, these appliance have been
optimized to operate with the R-407C coolant which contains no chlorine
and has no effect on the ozone layer."
