Daikin EWYQ050CAWH handleiding
Handleiding
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6 Installation
Installer and user reference guide
16
EWAQ016~064CAW + EWYQ016~064CAW
Packaged air-cooled water chiller
4P497339-1 – 2017.07
▪ Use clean pipes only.
▪ Hold the pipe end downwards when removing burrs.
▪ Cover the pipe end when inserting it through a wall so that no dust
and dirt enter.
▪ Use a good thread sealant for the sealing of the connections. The
sealing must be able to withstand the pressures and temperatures
of the system; it must also be resistant to the used glycol in the
water.
▪ When using non-brass metallic piping, make sure to insulate both
materials from each other to prevent galvanic corrosion.
▪ Make sure to provide a proper drain for the pressure relief valve.
▪ Because brass is a soft material, use appropriate tooling for
connecting the water circuit. Inappropriate tooling will cause
damage to the pipes.
▪ For correct operation of the system, a regulating valve must be
installed in the water system. The regulating valve is to be used to
regulate the water flow in the system (field supply).
6.4.3 To fill the water circuit
1 Connect the water supply to the drain and fill valve.
2 Make sure the automatic air purge valve is open (at least 2
turns).
3 Fill with water until the pressure gauge indicates a pressure of
approximately 2.0 bar. Remove air in the circuit as much as
possible using the air purge valves (refer to field setting[E‑04]
in "7.2.9Field settings on the remote controller"on page23).
NOTICE
▪ Air in the water circuit can cause malfunctioning. During
filling, it may not be possible to remove all the air from
the circuit. Remaining air will be removed through the
automatic air purge valves during the initial operating
hours of the system. Additional filling with water
afterwards may be required.
▪ To purge the system, use the special function as
described in "8Commissioning"on page28.
NOTICE
The water pressure indicated on the manometer will vary
depending on the water temperature (higher pressure at
higher water temperature).
However, at all times water pressure shall remain above
1bar to avoid air entering the circuit.
NOTICE
Make sure water quality complies with EU directive
98/83EC.
INFORMATION
The unit may dispose of some excessive water through the
pressure relief valve.
NOTICE
In case of a power supply failure or pump failure, and NO
glycol was added to the system, drain the system. When
water is at standstill inside the system, the system is very
likely to freeze and get damaged.
6.4.4 To protect the water circuit against
freezing
Frost can damage the system. For this reason, if negative ambient
temperatures are expected, make sure the water circuit is sufficiently
protected against freezing.
Heater tape (optional)
A heater tape is wound around the piping to protect vital parts of the
hydraulic system inside the unit.
This heater tape will only protect internal parts of the unit. It can not
protect field installed parts outside the unit.
Field heater tapes must be provided by the installer.
NOTICE
In case of a power failure or if the power supply is
disconnected during winter, the optional heater tape
cannot protect the unit from freezing. If a power failure can
happen at times the unit is unattended, if the power supply
is disconnected during winter, or if you did not select this
option, it is recommended to add glycol to the water
system.
Glycol
Refer to field setting [8‑04] in "7.2.9 Field settings on the remote
controller"on page23.
INFORMATION
The concentrations mentioned in the table below will
prevent the piping from bursting, but will not prevent the
liquid in the piping from freezing.
Depending on the expected lowest outdoor temperature, make sure
the water system is filled with a weight concentration of glycol as
mentioned in the following table.
Minimum outdoor
temperature
Ethylene glycol Propylene glycol
–5°C 10% 15%
–10°C 15% 20%
–15°C 20% 35%
WARNING
Ethylene glycol is toxic.
NOTICE
The above mentioned concentrations are applicable only
when the unit is at a standstill.
CAUTION
▪ In case of over-pressure when using glycol, be sure to
connect the safety valve to a drain pan in order to
recover the glycol. Connecting a drain pipe is not
required if no glycol is used. The discharged water is
then drained via the bottom of the unit.
▪ Using more than 40% glycol will damage the unit.
Bekijk gratis de handleiding van Daikin EWYQ050CAWH, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Daikin |
| Model | EWYQ050CAWH |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 8322 MB |
