Water-to-water chillers
Water-to-water chillers. The unit is supplied with anti-freeze oil and
refrigerant and has been factory tested. On-site installation therefore
just involves making connections to the mains power and water
supplies.
Unit charged with R407C ecological refrigerant.
STANDARD UNIT COMPOSITION
Base and self-supporting panels in polyester-painted hot-galvanised
sheet steel. The panels of the compressor housing are lined with high
density sound-absorbing material. The self-supporting structure
containing the main components is designed to ensure maximum ease
of access during servicing and maintenance operations.
Compressors
Hermetic scroll compressors. All the compressors are fitted with an oil
sump heater, electronic overheating protection with centralised manual
reset (thermal contact on size 0302) and a two-pole electric motor.
Water-refrigerant heat exchanger
AISI 316 steel braze-welded plate exchanger. The heat exchangers are
insulated with a closed-cell condensation proof lining in neoprene.
When the unit is working, it is protected by a differential pressure
switch mounted on the water side. The unit can work with antifreeze
mixtures at exchanger outlet temperatures as low as -8℃.
Refrigerant-water heat exchanger
AISI 316 steel braze welded plate exchanger. The exchangers can be
used with water from wells, from towers or with dry-coolers.
Refrigerant circuit
Main components of the refrigerant circuit:
- compressor discharge and suction shut-off valve
- dryer filter,
- refrigerant line sight glass with humidity indicator,
- externally equalised thermostatic valve,
- high and low pressure switches.
Electric power and control panel
Electric power and control panel, built to EN 60204-1/EC 204-1 standards, complete with:
- control circuit transformer,
- general door lock isolator,
- automatic circuit breakers and contactors for compressors,
- terminals for cumulative alarm block (BCA),
- remote ON/OFF terminals,
- spring-type control circuit terminal board,
- electronic controller.
Basic model
Unit without heat recovery.
Accessories
Rubber isolators
Pressure valve for water from wells (14/30℃)
230/3/50 power supply
Remote keyboard
Phase sequence relay
Evaporator steel filter kit (supplied separately)
Connecting manifolds
|
