LIMITATIONS
These units must be installed in accordance with all national
and local safety codes. If no local codes apply, installation must
conform with the appropriate national codes. See Table 1 for
Application Data. Units with voltage codes 25 and 46 are
certified by the Electrical Testing Laboratory (ETL) as meeting
the requirements of the ANSI/UL 465 Central Cooling Air Con-
ditioner Standard. If components are to be added to a unit to
meet local codes, they are to be installed at the dealer’s and/or
the customer’s expense.
HANDLING
These chillers are shipped as completely assembled units with
a full operating charge. Care should be taken to avoid damage
due to rough handling.
CAUTION: Units are not designed for stacking.
A unit should be lifted by inserting hooks through the holes in
the base rails.
CAUTION: Spreader bars of greater width than the unit must
be used to avoid crushing the unit frame or panels
with lifting chains or cables.
When preparing to move the unit, always determine the center
of gravity in order to equally distribute the weight. Slings
connected to the compressor end of the unit will usually have
to be made shorter than those to the rear of the unit, so the unit
will lift evenly. Refer to Figure 1.
LOCATION
These units are designed for outdoor installations on ground
or rooftop. The location should be selected for minimum sun
exposure and to insure an adequate supply of fresh air for the
condenser. Avoid locations beneath windows or between struc-
tures where normal operating sounds may be objectionable.
The condenser fans are propeller type and are not suitable nor
intended for use with duct work in the condenser air stream.
On either rooftop or ground level installations, rubber padding
can be applied between the base rails of the unit and its support
to lessen the transmission of vibration.
GROUND LEVEL LOCATIONS
It is important that the units be installed on a substantial base
that will not settle. See Table 2 for unit weights. Setting could
cause strain on the refrigerant or water lines resulting in leaks.
A one-piece concrete slab with footers that extend below the
frost line is recommended.
INSTALLATION
Unit
Power Supply
Voltage Variations
Min. Volts
Max. Volts
208/230-3-60
187
253
460-3-60
414
506
380/415-3-60
342
440
380-3-60
355
415
TABLE 1 - APPLICATION DATA
FIG. 1 - UNIT HANDLING
Model
Dimensions (Inches))
D
E
X
Y
W1LC420
118-5/8
86-7/8
43
46
W1LC530
118-5/8
86-7/8
41
46
Limitations
Model
W1LC420
W1LC530
Cooler Liquid
(GPM)
Min.
55
70
Max.
150
160
Leaving Liquid
Temp. (
°
F)
Min.
1
32
32
Max.
50
50
Air Entering
Condenser (
°
F)
Min.
2
20
20
Max.
115
115
1
For applications below 40
°
F leaving liquid temperature, a mixture of ethylene glycol and
water must be used.
2
Water in the cooler is protected from freeze-up to 0
°
F ambient by a heater under the
insulation.
570.05-N4Y
Unitary Products Group
3
