EWYQ080~250DAYN
Packaged air-cooled water chillers
4PW35559-1D – 03.2011
Installation manual
9
B
EFORE
STARTING
I do confirm having executed and checked all the above
mentioned items.
Keep for future reference
.
C
USTOMIZATION
IN
THE
SERVICE
MENU
To change a setting in the service menu:
1
Enter the usersettings menu (
Å
) as indicated in the operation
manual and press the
Ì
key to select the service menu, then
press the
‡
key (this is only possible if the unit is off).
2
Enter the correct password using the
fi
and
Ì
keys. The
password can be found in the service manual.
3
Press
‡
to confirm the password and enter the service menu.
4
Go to the screen which contains the parameter to be modified by
using the
fi
and
Ì
keys.
5
Position the cursor behind the parameter to be modified using
the
‡
key.
6
Select the appropriate setting using the
fi
and
Ì
keys.
7
Press
‡
to confirm the modification. When the modification has
been confirmed, the cursor switches to the next parameter which
can now be configured.
8
Place the cursor in the top left corner of the screen when you are
finished changing the parameters on this screen.
9
Repeat from instruction 4 onwards to modify other parameters.
Settings for units with glycol application (OPZL)
It is possible to change the minimum outlet water temperature
(
MIN.OUTL.WATER
) in the service menu, submenu safety.
Before lowering the minimum outlet water temperature:
■
Make sure that sufficient glycol is added to the water system
according to the table.
■
Make sure that the settings are according to the table.
■
Settings as above result in cooling inlet and cooling outlet lower
limits as shown in the table below.
The unit may not be started, not even for a very short
period of time, before the following pre-commissioning
checklist is filled out completely.
tick
✓
when
checked
standard steps to go through before starting the unit
■
1
Check for
external damage
.
■
2
Open all
shut-off valves
indicated by a red label: "OPEN THIS
VALVE BEFORE OPERATION". (Open the liquid line, discharge
and suction stop valves (if provided (OP12)) completely.)
■
3
Install
main fuses, earth leak detector
.
Recommended fuses: gL/gG according to IEC standard 269-2.
Refer to the wiring diagram for size
.
■
4
Supply the main voltage and check if it is within the allowable
±10% limits of the nameplate rating.
The electrical main
power supply
must be arranged so, that it
can be switched on or off independently of the electrical supply
to other items of the plant and equipment in general.
Refer to the wiring diagram, terminals L1, L2, L3 and PE
.
■
5
Check if all
field wiring
is correctly installed.
■
6
Supply water to the evaporator and verify if
water flow
is within
the limits as given in the table under
"Water charge, flow and
quality" on page 4
.
■
7
The piping must be completely
purged
.
■
8
Connect the
pump contact
, so that the unit can only come in
operation when the water pumps are running and the water flow
is sufficient.
For DICN configurations, every chiller shall have its own flow
switch and shall be interlocked with the pump from which it gets
the flow.
■
9
Check the
oil level
in the compressors.
■
10
Connect the power supply to the
heater tape terminals
(factory mounted OP10)
.
The heater tape must be connected to an independent,
separately fused, power supply all year-round.
■
11
Check that all the
water sensors
are correctly fixed into the
connection pipes of the heat exchanger.
■
12
Check if after the power supply has been switched on, all
changeable inputs and outputs
are correctly configured.
Note the correct configuration for each of the following
changeable inputs and outputs:
• DI1 .....................................
• DI2 .....................................
• DI3 .....................................
• DI4 .....................................
• DO1 .....................................
• DO2 .....................................
• DO3 .....................................
• DO4 .....................................
• DO5 .....................................
• DO6 .....................................
• AI1 .....................................
• AI2 .....................................
• AI3 .....................................
• AI4 .....................................
• AO1 .....................................
NOTE
■
It is necessary to read the operation manual
delivered with the unit before operating the unit. It
will contribute to understand the operation of the
unit and its electronic controller.
■
Close all switchbox doors after installation of the
unit.
Date
Sign
All customized settings must be done by a licensed
technician.
LWE
(*)
(*)
LWE = Leaving water evaporator
°C –10~–5
–5~0
0~2
2~5
5~20
Ethylene glycol
%
40
30
20
10
0
Propylene glycol
%
40
35
25
15
0
MIN.OUTL.WATER
Minimum outlet water
–10
–5
0
2
5
FREEZE UP DIS
Freeze-up disable
temperature setting
–11
–6
–1
1
4
RESET
Freeze-up disable
temperature reset
–10
–5
0
2
5
REFR TEMP SET
Refrigerant gas
temperature setting
–18.5
–13.5
–8.5
–6.5
–3.5
LP SETP. C:
Low pressure setpoint
in cooling mode
0.5
0.5
0.5
1.2
1.2
PUMP ON SETP
Pump on temperature
setting
(**)
(**) No heater tape is present
–21.5
–14.5
–7.5
–2.5
1.5
LWE
(*)
(*)
LWE = Leaving water evaporator
°C –10~–5
–5~0
0~2
2~5
5~20
Ethylene glycol
%
40
30
20
10
0
Propylene glycol
%
40
35
25
15
0
COOL. INLSP1
/
2
Lower limit of cooling
inlet
–7
–2
3
5
8
COOL. OUTSP1
/
2
Lower limit of cooling
outlet
–10
–5
0
2
5
Improper setting can result in severe damage of the
equipment.
