5
Main functions of the webserver
As standard, the Bluethink controller integrates a web
server with preloaded web page, which is accessed via
password and user management on several levels.
The web page allows the following functions to be car
-
ried out (some available only for users with advanced level
rights):
• display of the main characteristics of the unit such as
serial number, size, refrigerant
•
display of the general status of the machine: water inlet
and outlet temperatures on user side and source side,
mode, evaporating and condensing pressures, suction
and discharge temperatures
• display of the status of compressors and electronic ex-
pansion valves
•
display of graphs of the main quantities, as trends in
real time and also as log data
•
display of alarm log
•
remote setting of (on/off)
•
remote setting of set point
•
remote setting of time band
•
remote setting of summer/winter mode
Human-Machine Interface
The control has a graphic display that allows the following
information to be displayed:
• water inlet and outlet temperature
•
set temperature and differential set points
• description of alarms
• hour meter of operation and number of start-ups of the
unit, the compressors and the pumps (if present)
•
high and low pressure values, and relevant condensing
and evaporating temperatures
•
superheating at compressor suction.
For further details on available functions and on displayed
information, you can refer to the specific documentation
of the control.
CONTROLS AND SAFETY DEVICES
All the units are fitted with the following control and safety
components:
•
double high pressure switch with manual reset for each
compressor
•
high pressure safety device with automatic reset, for a
limited number of occurrences, managed by the con
-
troller via specific pressure transducer
• low pressure safety device with automatic reset, for a
limited number of occurrences, managed by the con
-
troller via specific pressure transducer
•
high pressure safety valve
• Low pressure safety valve
• operation probe at the outlet of the user-side heat ex-
changer that also acts as antifreeze probe
• thermal overload protection for compressors
•
water differential pressure switch installed at the fac
-
tory
TESTING
All the units are factory-tested and supplied complete with
oil and refrigerant.
CERTIFICATIONS AND REFERENCE
STANDARDS
The manufacturer has implemented and keeps the Man
-
agement Systems listed below and it is certified against
them:
•
Quality Management System according to standard UNI
EN ISO 9000;
•
Environmental Management System according to stand
-
ard UNI EN ISO 14000;
•
Health and Safety Management System according to
standard BS OHSAS 18000 (as converted into UNI EN
ISO 45000).
These management systems ensure that the company
puts in place any and all actions and initiatives to define
and monitor the standards defined by its Management,
which are stated in its Quality, Environmental and Safety
policies.
To meet the safety requirements, the unit was designed
and manufactured in compliance with the directives and
product regulations below:
•
PED Directive: safety criteria to be followed when de
-
signing pressure equipment. Units are PED-approved,
cat. IV;
• Machinery Directive: safety criteria to be followed when
designing machinery;
•
Low Voltage Directive: safety criteria to be followed
when designing electrical machine parts;
•
Electromagnetic Compatibility Directive: electromag
-
netic compatibility criteria to be followed when design
-
ing electrical machine parts;
•
WEEE Directive: criteria for product management at the
end of its life cycle as waste with a view to environmen-
tal protection.
The units are manufactured, tested and checked with ref
-
erence to the European standards specified in the Decla
-
ration of CE Conformity, in accordance with the require
-
ments and procedures of our Quality System.
Responsibilities and obligations exclusive to
the installer:
•
to carry out a specific risk assessment according to the
European regulations/standards above and/or the local
laws in order to define the necessary measures for con
-
formity;
•
to comply with the requirements and to take the meas
-
ures resulting from the outcomes of the risk assess
-
ment, pursuant to the relevant regulations and stand
-
ards.
