EDM SYSCROLL 20 35 AIR S 1GB05.13

SyScroll 20-35 Air
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5
Condenser fans
Units are equipped with two 500mm diameter axial fans
with proled, sickle shaped blades designed with bioni-
cal know how, optimized full bellmouth with static blades
(motor suspension) and short diffusor.
They are placed directly in front of the coil in order to in-
crease the air ow and the heat transfer between air and
refrigerant.
Fan motors have IP54 protection grade, and thermostat
protection placed in the bearings. Both fans are equipped
with a safety grill.
Refrigerant circuit
Refrigerant circuit is equipped with one hermetic scroll
compressor, sight glass, lter-drier and mechanical ex-
pansion 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 and liquid receiver.
Hydraulic circuit
All units are equipped with multi-stage centrifugal pump
providing outdoor available static pressure. Pump impel-
ler is insulated with anti-condensation shell. Water lter is
supplied as standard. Safety valve and expansion tank are
placed on suction side of the pump. Water connections
are 1” 1/4 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 automatic circuit breaker
switches,
Phase sequence control,
Pressostatic fan speed 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,
Connection clamps to remote keyboard (OPTIONAL),
Clamps for boiler relay control (OPTIONAL),
Clamps for dynamic set-point compensation (4-20 mA,
0-1 V, 0-5 V, 0-10 V),
Clamps for DHW 3-way valve (ACCESSORY),
Soft-starter,
Power factor correction capacitors (OPTIONAL).
Standard equipment
Fan speed control.
Microprocessor card with 4 red digits, 18 LED, 4 buttons.
Digital pressure and temperature reading kit.
High ambient pressure control.
Sequence phase control.
Control circuit transformer 230 V/12 V.
Compressor/pump hour meter.
Main switch.
Refrigerant R410A.
PED approval.
Evaporator antifreeze electric heater.
Compressor box.
Water differential pressure switch.
Water lter.
Automatic circuit breaker.
Multi stage centrifugal pump.