TURBOCHILL Chillers
Chillers
8
Installation Manual : 6703052 05/2008
General Description
Each refrigeration circuit is supplied with the following:
•
Full operating charge of R134a
•
Liquid injection cooling circuit fitted to each compressor as standard with sight glass,
filter drier, solenoid valve and ball valve
•
Electronic Expansion Valves (EEV)
•
Discharge line shut off valve - Per compressor
•
Suction line shut off valve - Per compressor
•
Liquid line shut off valve(s)
•
Large capacity filter drier(s) with replaceable cores
•
Liquid line sight glass(s)
•
Low pressure switch with Auto reset
•
High
pressure
switch
with
manual reset - Per compressor
•
Suction and liquid pressure transducers
•
Suction line strainer - Per compressor
•
Hot gas load balancing valve
Refrigeration
•
Discharge check (non return) valve - Per compressor
As standard, the
microprocessor controller can provide an infinite
capacity control between 7.5% and 100%, depending on the component selection.
Optionally, the controller is designed to provide capabilities for;
•
Building Management Systems (BMS)
•
Sequencing (Master/Slave and Run/Standby)
Controls
to meet all your system requirements,
please specify at time of enquiry
.
A weatherproof electrical power and controls panel is situated at the end of the unit
and contains:
•
Individual mains power isolator for each compressor
•
Separate door locking electrical isolation for fan mains
compartment
•
Dedicated bus-bar chamber for connection of incoming 3-
phase and earth mains power supply
refer to
Interconnecting
Wiring
, on page 25
•
Emergency Stop fitted to compressor mains compartment door
•
Separate, fully accessible, controls compartment, allowing adjustment of control set
points whilst the unit is operational
•
Circuit breakers for protection of all major unit components
•
Phase rotation relay incorporating phase loss protection
The electrical power and control panel is wired to the latest European standards and
codes of practice.
Mains supply is 3 phase and a neutral is not required, refer to
Interconnecting Wiring
, on
page 25.
Separate 230V permanent supply is required for the controls and safety features.
Electrical
Electrical terminals for external evaporator pipework trace heating (230V/500W)
are provided.
CAUTION
Unit controls supply is supported by an on board UPS to ensure control operation
is maintained in the event of a system shut down in a power failure situation.
Power will be maintained until mains power is reinstated for a maximum period of
10 minutes.
For further electrical information refer to
Electrical Data
, on page 25.
