EWLD120~540MBYNN
Condenserless water-cooled water chillers
4PW22686-1
Installation manual
2
■
Voltage free contacts
•
general operation/pumpcontact
•
alarm
•
operation circuit 1
•
operation circuit 2 (only for EWLD340~540)
■
Changeable voltage free contacts
•
100% unit signal
•
second evaporator pump
•
free cooling contact
■
Changeable remote inputs
•
remote start/stop
•
dual setpoint
•
enable/disable capacity limitation circuit 1
(2)
•
enable/disable capacity limitation circuit 2
(only for EWLD340~540)
■
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
■
Fan control (see operation manual and wiring diagram)
Standard supplied accessories
■
Filter kit for installation in front of the evaporator water inlet.
O
PERATION
RANGE
M
AIN
COMPONENTS
(refer to the outlook diagram supplied with
the unit)
1
Compressor (M1C)
2
Evaporator
3
Switchbox
4
Compressor switchbox
5
Charge valve
6
High pressure switch
7
Drier
8
Chilled water in
9
Chilled water out
10
Entering water temperature sensor (R3T)
11
Leaving water temperature sensor (R4T)
12
Discharge stopvalve
13
Digital display controller
14
Emergency Stop (S5E)
15
Power supply intake
16
Field wiring intake
17
Eyebolts for lifting
18
Transportbeam
19
Ballvalve liquid pipe
20
Main isolator switch (optional - S13S)
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.
CT
Condensing temperature
LWE
Leaving water temperature evaporator
Standard operation range
Range for pull down operation
–10
0
0
10
20
30
40
50
49
60
–5
4
16
°
C
LWE
10
20
°
C CT
–2
25
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!
