DUCTABLE AIR-COOLED LIQUID CHILLERS
30RBSY 039-160
Partial heat reclaim using desuperheaters
(option 49)
A plate heat exchanger is installed in series with the air
condenser coils on the compressor discharge line of each
circuit.
The hydronic module option reduces the installation time.
The unit is factory-equipped with the main hydronic components
required for the system: Screen filter, water pump, expansion
tank, safety valve and water pressure transducers.
The pressure transducers allow the Touch Pilot Junior control to:
-- Display the available pressure at the unit outlet and
the static system pressure
-- Calculate the instantaneous flow rate, using an
algorithm that integrates the unit characteristics
-- Integrate the system and water pump protection devices
(lack of water, water pressure, water flow rate etc.)
Several water pump types are available: Primary single or
dual low-pressure pump or single or dual high-pressure
pump.
An automatic pump start-up algorithm protects the heat
exchanger and the hydronic module piping against frost down
to -10°C(30RBSY) outside temperature, if the water heat
exchanger frost protection option is installed. If necessary
increased frost protection down to -20°C is possible by
adding heaters to the hydronic module piping (see option 42).
The hydronic module option is integrated into the unit without
increasing its dimensions and saves the space normally used
for the water pump.
HEATING HEATING
This module is equipped with pressure transducers to
optimise unit operation at the hydronic level.
COOLING
Hydronic module (option 116)
Typical hydronic circuit diagram
AIR TREATMENT
(option)
Legend
Components of the unit and hydronic module
1
Victaulic screen filter
2
Expansion tank (option)
3
Safety valve
4
Available pressure pump
Note: x 1 for a single pump, x 2 for a dual pump
5
Air purge
6
Water drain valve
Note: A second valve is located on the heat exchanger leaving piping
7
Pressure sensor
Note: Gives pump suction pressure information (see installation manual)
8
Temperature sensor
Note: Gives heat exchanger leaving temperature information (see installation manual)
9
Temperature sensor
Note: Gives heat exchanger entering temperature information (see installation manual)
10 Pressure sensor
Note: Gives unit leaving pressure information (see installation manual)
11 Check valve
Note: x 2 for a dual pump, not provided for a single pump
12 Plate heat exchanger
13 Water heat exchanger frost protection heater
Installation components
14 Temperature probe well
15 Air vent
16 Flexible connection
17 Shut-off valve
18 Screen filter (obligatory for a unit without hydronic module)
19 Pressure gauge
20 Water flow control valve
Note: Not necessary for a hydronic module with a variable-speed pump
21 Charge valve
22 Frost protection bypass valve (when shut-off valves [17] are closed during winter)
Notes:
-
Units without hydronic module are equipped with a flow switch and two temperature
sensors (8 and 9).
-
The pressure sensors are installed on connections without Schrader valve.
-
Depressurise and empty the system before any intervention.
Electrical data, units with hydronic modules
The pumps that are factory-installed in these units have
motors with efficiency class IE2. The additional electrical data
required by regulation 640/2009 is given in the installation,
operation and maintenance manual.
C
A
R
R
I
E
R
2
0
1
6
/
2
0
1
7
This regulation concerns the application of directive 2005/32/
EC on the eco-design requirements for electric motors.
113
CONTROLS
This option permits the production of free hot water using
heat reclaim by desuperheating the compressor discharge
gases. The option is available for the whole 30RBSY range,
that are equipped with traditional Cu/Al coils.