DUCTABLE AIR-COOLED SCROLL CHILLERS 30PA / PAC
■■ Pumps
The pump installed in a unit 30PAC can be replaced for:
-- High-pressure, monocellular, IP55, circulation pump
that can operate with glycol water (mono-ethylene
glycol).
-- Low-pressure, monocellular, IP55, circulation pump
that can operate with glycol water (mono-ethylene
glycol) (except model 90).
■■ Configuration
-- Vertical air supply, M01 assembly (default horizontal
supply, M00 assembly).
-- In the STD version: Different configurations of available
pressure from 7 to 35 mm.w.c.
■■ Climatic conditions
-- In units with the STD version that work in cooling
with an outdoor temperature lower than 12ºC,
the condensation pressure control allowing an “all
seasons” operation (up to -15ºC) is mandatory. This is
performed per motorized damper in the fan outlet.
-- Flexible ducts for supply and return air.
-- Flexible hydraulic connections (500mm), supplied in
the kit. Available for:
• Inlet / outlet of the unit.
• Inlet / outlet of the desuperheater circuit.
-- For 30PA units, filter with stainless steel mesh (500
microns), supplied in the kit.
Note: this filter is standard for 30PAC units.
-- Cut-off and water control valves, supplied in the kit.
-- High-pressure and low-pressure gauges in the cooling
circuit.
■■ Energy recovery
Desuperheater circuit which includes:
-- Thermally isolated, welded stainless steel plate
exchanger for working in a closed circuit in the
recovery of hot gases.
-- Draining valve and ball valve
-- Hot water recovery control thermostat.
-- Option for a 3-speed hot water circulation pump.
4
3
HEATING HEATING
1
Servomotor
2
5
6
Damper
COOLING
Options
LEGEND
1 Inlet to the indoor circuit
2 outlet from the indoor circuit
3 Outlet from the recovery circuit
C
A
R
R
I
E
R
2
0
1
6
/
2
0
1
7
5 Plate exchanger
6 Circulation pump (optional)
■■ Electric panel
-- Compressor soft starter.
-- Transformer for power supply without neutral.
-- Voltage 400 / 440V - 60 Hz (upon request).
-- Energy meter for monitoring of the power
consumption of the installation.
■■ Control / communications management
-- TCO user terminal, for remote control.
-- RS485 serial cards for network communication with
protocols: Carel, Modbus, LonWorks®, BACnetTM
MSTP, Konnex.
-- Ethernet pCO Web card for network communication
with protocols: Modbus TCP/IP, BACnetTM Ethernet,
TCP/IP, SNMP V1-2-3, FTP and HTTP.
75
CONTROLS
■■ Installation
-- Antivibration mounts made of rubber.
-- Protection grille for the coil.
-- Gravimetric filters in the return air. The filters frame is
removable, and upon request, it is possible to supply the
frame independently with the unit, to be joined on site.
AIR TREATMENT
4 Inlet to the recovery circuit
-- Coils protection:
• Coil with copper pipes and copper fins (upon
request).
• Coil with copper pipes and aluminium fins with
polyurethane and blygold coating.
-- During periods with low outdoor temperatures, antifreeze protection for the unit:
• Electrical heaters in the condensate drain pan.
Mandatory when outdoor temperatures are below
3°C.
• Operation with glycol water up to a minimum
outlet temperature of -10ºC. Thermal insulation of
the body 18 mm thick. Mandatory with negative
conditions.
• Anti-freeze protection with flexible electrical heaters
around the pipe of the hydraulic circuit.