EDM SyScroll 40 75 Air

SyScroll 40-75 Air
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5
Air cooled condenser coil
Outdoor heat exchangers are nned tubes coils. Coils
are built with internally grooved copper tubes expanded
into corrugated aluminium ns. Fin pitch is differentiated
between the two coil conguration (condensing only, re-
versible) in order to optimize operating conditions.
Condenser fans
Each unit has one axial fan, xed speed type, 800 mm
diameter. According to the version, the fan is cabled in
order to have high speed (700 to 900 rpm) for BLN ver-
sion and low speed (530 to 680 rpm) to reduce the sound
level for SLN version. The fan motor has IP54 grade and is
equipped with a thermal overload protection.
A pressure actuated fan speed controller can be supplied
as eld-installed accessory or factory-mounted option. It
allows the unit operating in cooling mode at ambient tem-
perature down to -18 °C.
On HT / HPF versions, a brushless fan motor is controlled
by a 0-10 V signal regulating the speed from 0 to 1110
rpm. This special fan allows the unit to be used in two
applications:
High ambient temperature: The fan provides high air
ow at maximum speed in order to keep a low con-
densing temperature while operating at high air tem-
perature.
Ducted installation: The fan provides high static pres-
sure in order to allow the unit to be ducted.
All types of fans are tted with a protective grille on top.
Refrigerant circuit
Refrigerant circuit is equipped with hermetic scroll com-
pressors tandem, sight glass, lter-drier and mechanical
expansion valve (electronic expansion valve is available
as an option).
Heat pump units refrigerant circuit is also provided with
4-way reversing valve, bi-ow lter drier, bi-ow expan-
sion valve, liquid separator and liquid receiver.
Hydraulic circuit
Thanks to the design exibility on the hydraulic circuit, all
the units can be congured in several ways:
BASIC unit: Unit is without pump and tank. The hydrau-
lic circuit includes the following components: water l-
ter, ow switch, 3/8” in/out water valves, water safety
valve, automatic air vent, hydrometer and Victaulic con-
nections (allowing quick connections in order to update
the circuit with buffer tank and pumps). All water piping
is covered with 19 mm thick insulation.
1P: 1-Pump unit having same equipment as BASIC one
+ a pump with available static pressure of 150 kPa. Two
air vents are supplied for this conguration.
1PT: 1-Pump + Tank unit having same equipment as 1P
one + a buffer tank to be installed inside the unit. The
tank is covered with 10 mm thick polyethylene insula-
tion and is equipped with a 200 W antifreeze heater.
2P: 2-Pump unit having same equipment as BASIC one
+ 2 pumps with available static pressure of 150 kPa.
Each pump can be isolated and replaced with the help
of two Victaulic valves. A non-return valve is provided
to protect each pump from pumping water in the dis-
charge pipe of the other pump. Two air vents are also
supplied for this conguration.
2PT: 2-Pump + Tank unit having same equipment as 2P
one + a buffer tank to be installed inside the unit. The
tank is covered with 10 mm thick polyethylene insulation
and is equipped with a 200 W antifreeze heater. In pump
equipped unit, the head of the pump is insulated with a
19 mm thick insulation to avoid condensation on it.
Water connections are 2” male gas threaded type.
Control panel
A new optimized control is supplied on all the units with a
simple user interface (possibility to customize keys func-
tions and to set menus visibility).
In addition to standard features as water temperature
control (with possibility to choose LWT/EWT probe), the
control can also manage following functions.
The main features of this control system are:
DHW control with anti-legionella function daily and
weekly activated,
Dynamic set point (4-20 mA, 0-1V, 0-5V, 0-10V),
Double set point,
OAT compensation,
Boiler / Electrical heater integration,
Auto adaptative function to reduce the water content of
the plant,
Managing of DHW 3 ways valve (ACCESSORY),
Advanced pump management,
Remote keyboard (ACCESSORY) with possibility to con-
nect (up to 100 m distance) without any serial interface.
Electrical board
Electric equipment is built in compliance with CE stand-
ards. Easy accessible in front of the unit – through an ac-
cess panel xed with screws – the equipment is complete
with:
Door lock main isolating switch,
Compressor contactors and fuses,
Phase sequence control,
Clamps for remote summer/winter switch,
Clamps for external ow switch,
Clamps for remote double set-point,
Clamps for external interlock,
Clamps for remote general alarm,