JOHNSON CONTROLS
35
FORM 150.72-ICOM7
ISSUE DATE: 10/22/2020
4
To ensure warranty coverage, this equip-
ment must be commissioned and serviced
by an authorized Johnson Controls
service mechanic or a qualied service
person experienced in chiller installation.
Installation must comply with all appli-
cable codes, particularly in regard to elec-
trical wiring and other safety elements
such as relief valves, HP cutout settings,
design working pressures, and ventilation
requirements consistent with the amount
and type of refrigerant charge.
Lethal voltages exist within the control
panels. Before servicing, open and tag
all disconnect switches.
INSTALLATION CHECKLIST
Check the following items before placing the units in
operation.
1. Inspect the unit for shipping damage.
2. Rig unit using spreader bars.
3. Open the unit only to install water piping sys-
tem. Do not remove protective covers from water
connections until piping is ready for attachment.
Check water piping to ensure cleanliness.
4. Pipe unit using good piping practice (refer to
ASHRAE handbook section 215 and 195).
5. Check that wiring is tight and meets NEC and lo-
cal codes.
6. Check that the unit is installed and operated with-
in limitations (See Operational Limitations on
page 45).
STARTUP/COMMISSIONING
The following pages outline detailed procedures to be
followed to install and start-up the chiller.
LOCATION AND CLEARANCES
Units are designed for outdoor installations on ground
level, rooftop, or beside a building. Location should
be selected for minimum sun exposure and to ensure
adequate supply of fresh air for the condenser. The
units must be installed with sufficient clearances for air
entrance to the condenser coil, for air discharge away
from the condenser, and for servicing access.
SECTION 4 – INSTALLATION
In installations where winter operation is intended and
snow accumulations are expected, additional height
must be provided to ensure normal condenser air flow.
Clearances are listed in Figure 25 on page 87.
Foundation
The unit should be mounted on a flat and level founda-
tion, floor, or rooftop capable of supporting the entire
operating weight of the equipment. See Physical Data
YLAA0180 – YLAA0517 50 Hz on page 48 for oper-
ating weight. If the unit is elevated beyond the normal
reach of service personnel, a suitable catwalk must be
capable of supporting service personnel, their equip-
ment, and the compressors.
Ground Level Locations
It is important that the units be installed on a substan-
tial base that will not settle. A one piece concrete slab
with footers extended below the frost line is highly rec-
ommended. Additionally, the slab should not be tied to
the main building foundations as noise and vibration
may be transmitted. Mounting holes (5/8 in. diameter)
are provided in the steel channel for bolting the unit to
its foundation (see Dimensions on page 80).
For ground level installations, precautions should be
taken to protect the unit from tampering by or injury to
unauthorized persons. Screws and/or latches on access
panels will prevent casual tampering. However, further
safety precautions such as a fenced-in enclosure or
locking devices on the panels may be advisable.
Rooftop Locations
Choose a spot with adequate structural strength to
safely support the entire weight of the unit and service
personnel. Care must be taken not to damage the roof.
Consult the building contractor or architect if the roof
is bonded. Roof installations should have wooden
beams (treated to reduce deterioration), cork, rubber,
or spring type vibration isolators under the base to min-
imize vibration.
Noise Sensitive Locations
Efforts should be made to ensure that the chiller is not
located next to occupied spaces or noise sensitive areas
where chiller noise level would be a problem. Chiller
noise is a result of compressor and fan operation.
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