EWWD120~540MBYNN
Packaged water-cooled water chillers
4PW22684-1A
Installation manual
2
■
Changeable voltage free contacts
•
100% unit signal
•
second evaporator pump
•
condenser pump
•
cooling/heating reversing valve
■
Changeable remote inputs
•
remote start/stop
•
dual setpoint
•
enable/disable capacity limitation
(2)
•
remote cooling/heating
■
Changeable analog input
•
setpoint signal (stand alone unit or slave 1 unit in a DICN system)
0/1 V, 0/10 V, 0/20 mA or 4/20 mA
•
evaporator outlet water sensor of a DICN system (only on master
unit)
■
Multiple language selection
■
Schedule timer
■
Floating setpoint
Standard supplied accessories
■
Filter kit for installation in front of the evaporator water inlet.
O
PERATION
RANGE
LWC
Leaving water temperature condenser
LWE
Leaving water temperature evaporator
Standard operation range
Range for pull down operation
M
AIN
COMPONENTS
(refer to the outlook diagram supplied with the unit)
S
ELECTION
OF
LOCATION
This is a class A product. In a domestic environment this product may
cause radio interference in which case the user may be required to
take adequate measures.
The units are designed for indoor installation and should be installed
in a location that meets the following requirements:
1.
The foundation is strong enough to support the weight of the unit and
the floor is flat to prevent vibration and noise generation.
2.
The space around the unit is adequate for servicing.
3.
There is no danger of fire due to leakage of inflammable gas.
4.
Select the location of the unit in such a way that the sound generated
by the unit does not disturb anyone.
5.
Ensure that water cannot cause any damage to the location in case it
drips out of the unit.
I
NSPECTING
AND
HANDLING
THE
UNIT
At delivery, the unit should be checked and any damage should be
reported immediately to the carrier claims agent.
When handling the unit, take into account the following:
1
Lift the unit preferably with a crane and belts in accordance with
the instructions on the unit. The length of the ropes (1) to be
used for lifting are 4 m minimum each.
2
The unit is shipped with wooden beams (2) under it, these have
to be removed before installation.
(2) Can be used for night set back and/or peak power limitation: A kWh-gauge
is connected to a voltage free contact. If the contact is enabled, circuit 1/2
will be limited to a preset capacity step.
1
Compressor
2
Evaporator
3
Condenser
4
Switchbox
5
Compressor switchbox
6
Air purge condenser
7
Water drain condenser
8
Charge valve
9
Safety valve
10
High pressure switch
11
Drier
12
Chilled water in
13
Chilled water out
14
Condenser water out
15
Condenser water in
16
Entering water temperature sensor (R3T)
17
Leaving water temperature sensor (R4T)
–10
0
0
10
20
30
40
50
44
60
–5
4
16
°
C
LWE
10
20
°
C LWC
–2
18
Discharge stopvalve
19
Condenser entering water temperature sensor
20
Digital display controller
21
Emergency Stop (S5E)
22
Power supply intake
23
Field wiring intake
24
Eyebolts for lifting
25
Transportbeam
26
Ballvalve liquid pipe
27
Main isolator switch (optional - S13S)
28
Filter
29
Flowswitch
NOTE
Pull-down operation is restricted to one hour
maximum.
NOTE
Try to reduce the drilling in the unit to a minimum. If
drilling is impreventable, remove the iron filling
thoroughly in order to prevent surface rust!