Daikin C10FZXS, Инструкция по установке, эксплуатации и обслуживанию

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Minimum clearance at all sides, including the top, is (1 meter); local regulation may require larger clearance.
Ventilation
The temperature of the room where the unit is placed should be always maintained between 0°C and 40°C.
Sound protection
When sound levels require special control, great care must be exercised to isolate the machine from its base by
appropriately applying anti-vibration elements (supplied as an option). Flexible joints must be installed on the water
connections, as well.
Vessel Drains at Start-up
The unit is tilted and drained of water in the factory and shipped with open drain valves in each head of the evaporator
and condenser. Be sure to close the valves prior to filling the vessel with fluid.
Connections
All evaporators and condensers come standard with groove-type nozzles for Victaulic couplings (also suitable for
welding), or optional flange connections. The installing contractor must provide matching mechanical connections of the
size and type required.
Be sure that water inlet and outlet connections match certified drawings and stenciled nozzle markings.
Evaporator is totally symmetric with respect to the vertical plane, so inlet and outlet nozzles may be exchanged; in this
case differenzial pressure switch connections have to be exchanged too.
Condenser has water inlet in the bottom nozzle and water outlet in the upper nozzle; exchanging this connection is not
allowed (it will result in strong performance degradazion, like subcooling reduction, up to real operation malfunzioning,
like flash gas at the condenser outlet, or risks to the compressor due to unsufficient motor cooling).
The water heads can be interchanged (end for end) so that the water connections can be made at either end of the unit.
If this is done, use new head gaskets and relocate the control sensors.
Water piping
Piping must be designed with the lowest number of elbows and the lowest number of vertical changes of direction. In this
way, installation costs are reduced considerably and system performance is improved.
The water system must have:
1. Anti-vibration mountings in order to reduce transmission of vibrations to the underlying structure.
2. Isolating valves to isolate the machine from the water system during service.
3. Manual or automatic air venting device
at the system’s highest point.; drain device at the system’s lowest point.
Neither the evaporator nor the heat recovery device must be positioned at the system’s highest point.
4. A suitable device that can maintain the water system under pressure (expansion tank, etc.).
5. Water temperature and pressure indicators on the machine to assist the operator during service and
maintenance.
6. A filter or device that can remove foreign particles from the water before it enters the pump (in order to prevent
cavitation, please consult the pump manufacturer for the recommended type of filter). The use of a filter prolongs
the life of the pump and helps keep the water system in a better condition.
7. Another filter must be installed on the machine inlet water pipe, near the evaporator and heat recovery (if
installed). The filter prevents solid particles from entering the heat exchanger, as they could damage it or reduce
its heat exchanging capacity.
8. The shell and tube heat exchanger has an electrical resistance with a thermostat that ensures protection against
water freezing at ambient temperatures as low as
–25°C. All the other water piping outside the machine must
therefore be protected against freezing.
9. The heat recovery device must be emptied of water during the winter season, unless an ethylene glycol mixture in
appropriate percentage is added to the water circuit.
10. If the machine is intended to replace another, the entire water system must be emptied and cleaned before the
new unit is installed. Regular tests and proper chemical treatment of water are recommended before starting up
the new machine.
11. In the event that glycol is added to the water system as anti-freeze protection, pay attention to the fact that suction
pressure will be lower, the machine’s performance will be lower and water pressure drops will be greater. All
machine-protection systems, such as anti-freeze, and low-pressure protection will need to be readjusted.
Before insulating water piping, check that there are no leaks.
ATTENTION
Install a mechanical filter on the inlet to each heat exchanger. Failure to install a mechanical filter allows solid particles
and/or welding slag to enter the exchanger. Installation of a filter having a mesh size not exceeding 0,5
– 1 mm is
advised.
The manufacturer cannot be held responsible for any damage to exchangers ensuing from the lack of a mechanical filter.