Daikin EUWY-KBZW1 handleiding

Airco

Daikin

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Handleiding

EUWY(*)5~24KBZW1
Packaged reversible air to water heat pumps
4PW61655-1 – 07.2010
Installation and operation manual
10
Water supply
Fill the water piping, taking into account the minimum water volume
required by the unit. Refer to the chapter "Water charge, ﬂow and
quality" on page 7.
Make sure that the water is of the quality as mentioned in the chapter
"Water quality speciﬁcations" on page 7.
Purge the air at the high points of the system (automatic air purge
inside the chiller) and check the operation of the circulation pump and
the ﬂow switch.
Power supply connection and crankcase heating 
To  switch on the crankcase heater proceed as follows:
1 Switch on the main switch of the unit. Make sure that the unit is
"OFF".
2 The crankcase heater is switched on automatically.
3 Check the supply voltage on the supply terminals L1, L2, L3, (N)
by  means of a voltmeter. The voltage must correspond to the
voltage indicated on the identiﬁcation label of the unit. 
If the voltmeter reads values which are not within the ranges
speciﬁed in the technical data, check the ﬁeld wiring and replace
the supply cables if necessary.
4 Check the service leds H1P and H2P on the I/O PCB (A2P). 
If the H1P led is off and the H2P is on, then the phase order is
not correct. Switch off the main switch and call a licensed
electrician to connect the wires of the power supply cable in the
correct phase order.
After six hours, the unit is ready for operation.
Pump start up 
(only for EUWYP and EUWYB)
1 Turn the pump switch to manual. The pump must run now.
2 Set the desired ﬂow by turning the pressure regulating valve.
3 Put the switch to auto. The pump will stop.  
4 Switch the chiller on. The pump will be started by the chiller. 
Detailed instructions for switching the unit on and operating the
unit, can be found in the chapter "Working with the units" on
page 11.
5 Check if the ∆t of the chiller is within expectations. If necessary,
regulate the ﬂow by using the pressure regulating valve.
Figures pressure characteristics
- Pump characteristics (See ﬁgure 4)
- External static pressure (See ﬁgure 5)
- Pressure drop curves evaporators (See ﬁgure 6)
General recommendations
Before switching on the unit, read following recommendations:
■ When the complete installation and all necessary settings have
been carried out, close all front panels of the unit.
■ The service panel of the switch box may only be opened by a
licensed electrician for maintenance purposes.
OPERATION
The units are equipped with a digital controller offering a user-friendly
way to set up, use and maintain the unit.
This part of the manual has a task-oriented, modular structure. Apart
from the ﬁrst section, which gives a brief description of the controller
itself, each section or subsection deals with a speciﬁc task you can
perform with the unit.
Digital controller
User interface
The digital controller consists of a numeric display, four labelled keys
which you can press and LEDs providing extra user information.
Figure - Digital controller
Figure - Remote user interface (optional kit)
In order to avoid compressor damage, it is necessary to
switch on the crankcase heater for at least six hours
before starting the compressor after a long period of stand-
still.
NOTE
■ The desired ﬂow is depending on the capacity of
the chiller and the desired temperature difference
between water inlet and outlet (∆t).
■ If manometers are installed, the ﬂow can be
deduced from the pressure difference over the
pump. 
For pump and resistance characteristics, refer to
paragraph  "Figures pressure characteristics" on
page 10.
1 pump 5, 8 Hp 4 pump 5, 8, 10 Hp (optional)
2 pump 10, 12 Hp 5 pump 12, 16, 20, 24 Hp 
(optional)
3 pump  16, 20, 24 Hp
1 EUWYP5, EUWYB5 5 EUWYP16, EUWYB16
2 EUWYP8, EUWYB8 6 EUWYP20, EUWYB20
3 EUWYP10, EUWYB10 7 EUWYP24, EUWYB24
4 EUWYP12,  EUWYB12
1 EUWY(*)5 4 EUWY(*)16
2 EUWY(*)8 5 EUWY(*)20, EUWY(*)24
3 EUWY(*)10, EUWY(*)12

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