CIAT AQUACIAT POWER LD 1100R, Инструкция по эксплуатации

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Minimum frost protection temperature based on the
water outlet temperature (example)
Minimum frost protection temperature (°C)
Water outlet temperature (°C)
For example, based on the above curves, if the ethylene glycol
mass concentration measured in the loop is 35%, the frost
protection temperature value of -19.1°C must be entered in the
software. This corresponds to a minimum water outlet temperature
of -9.6°C. The control point must be adjusted as a result.
- It is vital to check the glycol content at least once
a year and adjust the software's frost protection
based on the measured level.
- This procedure must be performed systematically
if water or antifreeze solution is added.
- Observe the minimum frost protection
temperature based on the water outlet
temperature.
NOTE:
- In the case of frost protection of the unit by low air
temperature, the percentage of glycol must be evaluated
accordingly.
- The maximum glycol content for units equipped with a
hydraulic module is 45%.
- To facilitate maintenance operations, it is recommended
that isolation valves are installed upstream and downstream
of the machine
12.2.2 - Hydraulic module without variable speed
The hydraulic module is composed of the system's main hydraulic
components: factory-fitted water pump, screen filter and relief
valve.
The fixed-speed operating pressure pump provides the nominal
flow rate for the system water loop.
Several types of water pump are available to suit all applications:
- Single or dual low pressure pumps
- Single or dual high pressure pumps.
The nominal flow rate of the system should be adjusted using a
manual control valve provided by the customer.
The relief valve placed on the water inlet pipes at the pump inlet
limits the pressure to 400 kPa (4 bar).
A screen filter that can be easily removed is placed at the pump
inlet and protects the pump and the plate heat exchanger against
solid particles that are greater than 1.2 mm.
Additional options can be ordered if necessary:
- Protection of the hydraulic module in outdoor temperatures
down to -20°C.
- Expansion tank.
- Additional filter (particle size of 800 µm) for extra protection.
The use of the hydraulic module on open systems is
prohibited.
12.2.3 - Hydraulic module with variable speed
The composition of the hydraulic module with variable speed is
similar to that of the hydraulic module without variable speed.
In this case, the pump is controlled by a variable frequency drive
that allows the pump's nominal flow rate to be adjusted according
to the chosen control mode (constant pressure or temperature
differential, or fixed speed) and the installation operating
conditions.
The use of the hydraulic module on open systems is
prohibited.
12.2.4 - Partial heat recovery
This option enables free hot water to be produced using heat
recovery by desuperheating the compressor discharge gases.
This option is available for the entire LD/ILD range.
A plate heat exchanger is installed as standard, with the air-cooled
exchanger coils on the compressor discharge line of each circuit.
The control configuration for the desuperheater option is factory-
assembled (see chapter 12.2.3.4 - Operation). The installer must
protect the heat exchanger against frost.
12 - OPTIONS
AQUACIAT
POWER
™ LD/ILD EN-56