Daikin SERHQ020BAW1, Installation And Operation Manual

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5 Installation
Installation and operation manual
22
SERHQ020~0 SEHVX20~64BAW
Split packaged air-cooled water chiller
4P508019-2B – 2018.01
Value number Weight (kg) LEDs
15 70≤x<75
16 75≤x<80
17 80≤x<85
18 85≤x<90
19 90≤x<95
20 95≤x<100
21 100≤x
7 Press BS1 to return to setting mode 1 (= initial state).
8 Perform a test operation as described in "7.5 To perform a test
run of the outdoor unit" on page 37 .
INFORMATION
If you get confused in the middle of the process, push BS1.
Then it returns to setting mode 1 (H1P is off).
9 Resume the input procedure from step 2 onwards.
5.6.8 Checks after charging refrigerant
▪ Are all stop valves open?
▪ Is the amount of refrigerant, that has been added, recorded on the
refrigerant charge label?
NOTICE
Make sure to open all stop valves after (pre-) charging the
refrigerant.
Operating with the stop valves closed will damage the
compressor.
5.6.9 To fix the fluorinated greenhouse gases
label
1 Fill in the label as follows:
b
Contains fluorinated greenhouse gases
2
1
1
1
2
2
kg
tCO
2
eq
GWP × kg
1000
=
=
+
kg
=
kg
=
GWP: XXX
RXXX
a
f
c
d
e
a If a multilingual fluorinated greenhouse gases label is
delivered with the unit (see accessories), peel off the
applicable language and stick it on top of
a .
b Factory refrigerant charge: see unit name plate
c Additional refrigerant amount charged
d Total refrigerant charge
e Greenhouse gas emissions of the total refrigerant charge
expressed as tonnes CO
2
equivalent
f GWP = Global warming potential
NOTICE
In Europe, the greenhouse gas emissions of the total
refrigerant charge in the system (expressed as tonnes CO
2
equivalent) is used to determine the maintenance intervals.
Follow the applicable legislation.
Formula to calculate the greenhouse gas emissions:
GWP value of the refrigerant × Total refrigerant charge [in
kg] / 1000
2 Fix the label on the inside of the unit near the charging port
(e.g. on the inside of the service cover).
5.7 Connecting the water piping
5.7.1 To connect the water piping
Water connections must be made in accordance with all applicable
legislations and the outlook drawing delivered with the unit,
respecting the water inlet and outlet.
NOTICE
Do NOT use excessive force when connecting the piping.
Deformation of the piping can cause malfunctioning of the
unit.
If dirt gets in the water circuit, problems may occur. Therefore,
always take into account the following when connecting the water
circuit:
▪ 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.
▪ 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).
5.7.2 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
"6.1.9 Field settings on the user interface" on page 29 ).
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 "7 Commissioning" on page 35 .
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
1 bar to avoid air entering the circuit.