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K series
for
close control
NEW
C series
for
Close control
Electronic
Expansion
Valve
Backward
Curved
Fan
New
Casing
Available in:
-Upflow air discharge (OC)
-Downflow air discahrge (UC)
-Direct expansion: OCA/UCA Series
- with remote air cooled condenser
- with built-in water cooled condenser
- with remote condensing unit
- TS (Two Season) version
- FC (Free Cooling) version (water-dx)
- FC (Free cooling) version (dx-air)
-Chilled water: OCU/UCU Series
- with double water coil (TwinSource)
K & C Series
Modular air conditioners with upflow and
downflow air supply
- Cooling capacity from 5 to 160 Kw
- Air flow from 2.000 to 30.000 m3/h
- 1 or 2 scroll compressors
- Fans separated from the unit by special anti
vibrating support
- Electric board complete with protections
and phase sequencer
- Total front access for maintenance
- High aeraulic efficiency of the units
- High efficiency of the coil with special fins
drawing
- Both chilled water and direct expansion coils
are equipped with hydrophilic aluminium fins
that eliminate any risk of water transportation
into the fans.
- Larger surface of filters and coils allows lower
air speed trough the coil with the result of lower
pressure drop.
- Low power absorption of the fans
Complete range of accesories for all installation needs.
- Hot water re-heating coils with 3 way valve.
- Electric heater
- Hot gas re-heating coil
- Humidifier
- Electronic hot-gas injection valve
- Electronic expansion valve for cooling capacity control
- Air discharge or suction plenum
- Sound damped hood for air discharge or suction
- Fresh air connection (up to 40%)
- Gravity or motorised dampers
- Adjustable underbase with air conveyor
- Layer lead plate sound damping panels
- Microprocessor µAC (Standard)
- Microprocessor Pco3 (accessory)
- Clock card
- Local network possibility
- Components for BMS connection
- Serial comunication card RS485 (modbus-lonworks-bacnet-tcp/ip)
- Gateway Modbus
- Gateway BacNet
- WebGate TCP/IP
pCO 3
Microprocessor
-More memory
-More Alarms
-Easier to use
- Web and BMS
compatible
BMS CONNECTION
Third Parties
Protocols
LAN
Electronic Expansion Valve
- Managed and optimized by on-board
microprocessor (compatible with mAC
and pCO)
- Together with temperature and
pressure sensors, allows the monitoring
of all functional parameters of the cycle
and their optimization
Energy Savings
- Optimize overheating
- Operate at lower condensation
temperature respect to those permitted by
normal thermostatic valves increasing unit
COP
- Regulate the operative temperature
with high accuracy
- Perform dehumidification keeping
constant air flow
The standard fan section is made up
by one or more backward curved,
free running impeller, radial fans
(plug fan) with single speed motors.
ADVANTAGES:
low noise level
high efficiency
very easy cleaning of the blades
3 types of Plug fan motor controls are available:
• Standard fan
• Standard fans with autotransformer
• Electronically commutated fans (EC)
Backward Curved fans with
asynchronous motor (Standard)
single speed motors offering low noise
level as well as a high efficiency.
The free running impeller assures a
very high efficiency and a easy blade
cleaning
These fans offer a high available static
pressure, perfect for most
applications.
The final air flow comes as a
consequence of the real pressure
drop of the installation
Standard fans with autotransformer
In case of necessity to adjust the air
flow during commissioning, or to
have the possibility to change it
during the use, an auto-transformer
(accessory) can be installed to
regulate the fan motors revolution
number.
Electronically commutated fans (EC)
(Accessory)
Main advantages
•Very high efficiency: up to 90%.
•Lower power input
•Lower starting current.
•Lower noise level
•Higher static pressure
•Fan speed regulation with
•0-10V signal (pCO microprocessor
Fan speed regulation with EC fans (accessory)
•Constant air flow regulation:
•grants a constant air flow even with dirty filters. Suggested whit F7 filters
•Cooling capacity control:
•modulates the air flow according to cooling capacity demanded by the system.
There is a relevant energy saving and noise reduction.
•Constant pressure in the raised floor:
• maintain a constant pressure in the raised floor. This regulation is requested in
case of air distribution in the raised floor by motorised dampers regulated by a
local thermostat
Electronically commutated fans (ECF)
(Accessory)
The following air flow regulation can be requested:
Electronic fans for constant air flow regulation
The pCO controls the ECFs to guaranty a constant air flow
even when the filters become dirty which might cause the air
flow to be greatly reduced. This solution is warmly
suggested when F7 class filters are installed on supply so
not to be subject to changing them too often.
Electronically commutated fans (ECF)
(Accessory)
Electronic fans for the regulation of the pressure in the
raised floor.
The pCO controls the ECFs to maintain a constant pressure
in the raised floor (only for units with chilled water coil). This
regulation is optimal in case of great offices divided in
various rooms with distribution of the air in the raised floor
through motorised dampers regulated by a local thermostat.
Electronically commutated fans (ECF)
(Accessory)
air flow regulation in relationship to cooling capacity.
The pCO controls the ECFs to modulate the air flow in
relationship to the cooling capacity demanded by the
system. It is therefore possible to obtain a significant impact
on energy saving and noise level especially with partial
thermal loads. This solution is applicable for units with
chilled water coils or direct expansion ones but with
modulating control of the cooling capacity.
Use of renewable energy sources:
External air as a substitution or integration
source for meccanical cooling.
“Free Cooling” systems:
air conditioners with two cooling source
chilled water and direct expansion coils and
water cooled condensor :
series OCW/FC and UCW/FC.
Free cooling unit (water-direct expansion)
- Chilled-water cooling coil integrated with the aluminium fins of the direct
expansion coil to maximize the free-cooling effect.
- Three-way modulating valve controlled by the microprocessor on chilled water
circuit. The microprocessor automatically open and close the valve according to
room temperature and water temperature.
- Pressostatic two-way valve installed on the water plate condenser to control a
constant condensing temperature.
- External dry cooler.
Winter functionment
The modulating valve is closed twords
the condensor and opened twords the
cold coil. The water temperature is so
low to allow for the functionment of the
unit in total free cooling and obtain a
great energy saving.
Spring-Autumn functionment
The modulating valve is closed twords
the condensor and open twords the cold
coil, even if the water temperature is
normally below 19°C but does not
allow for the free cooling of all the
frigorif power necessary. The water
coming out of the coil is then sent to the
condensor and allows for the
functionemnt of the frigorific coil
integrating the power obtained by the
free cooling.
Summer functionment
The modulating valve on the water pipe
is closed twords the cold coil and open
twords the water cooled condensor.
The unit therefore works with the direct
expansion circuit.
Obviously in this situation the free
cooling effect is zero.
Two seasons unit (chilled water-direct expansion)
- Direct expansion coil
- Chilled water coil
- The two cooling source are completely independents and separeted
- Normal working with one of the cooling source and in emergency situation
with the other one.
- Automatic cooling commutation in case of serious alarm (chillerpump.compressor…)
“TWO SEASON SYSTEM”
Working (chilled water)
“TWO SEASON SYSTEM”
Working (Direct expansion)
Twin source unit (chilled water-city water)
- Chilled
water coil (3 rows)
- City water coil (3 rows)
- Modulating valve on both the water circuit
- Automatic commutation in emergency situation
Thank You