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Form 150.72-ICOM6
Issue date: 12/19/2023
To ensure warranty coverage, this equip-
ment must be commissioned and serviced
by an authorized Johnson Controls
service mechanic or a qualified 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
Complete the following steps before placing the units
into operation:
• Inspect the unit for shipping damage.
• Rig unit using spreader bars.
• Only open the unit to install water piping system.
Do not remove protective covers from water con-
nections until piping is ready for attachment. Check
the water piping to ensure cleanliness.
• Pipe the unit using good piping practice. Refer to
ASHRAE handbook section 215 and 195.
• Ensure the wiring is tight and meets NEC and local
codes.
• Check that the unit is installed and operated within
limitations. See Operational limitations on page
47.
Location and clearances
Units are designed for outdoor installations on ground
level, rooftop, or beside a building. Due to the proper-
ties of the refrigerant, never install the chiller inside
a structure or without correct ventilation. 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.
Johnson Controls
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.
Do not smoke smoking or have an open flame in the
vicinity of the chiller.
See Figure 37 on page 111 for clearances.
Foundation
Mount the unit on a flat and level foundation, floor, or
rooftop capable of supporting the operating weight of the
equipment. See Physical data YLAA0041 to YLAA0230,
60 Hz on page 50 for operating weight. If the unit is
elevated beyond the normal reach of service personnel,
install a suitable catwalk capable of supporting service
personnel, their equipment, 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. dia.) are
provided in the steel channel for bolting the unit to its
foundation. See Dimensions on page 35.
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 ac-
cess panels will prevent casual tampering. However,
further safety precautions such as a fenced-in enclo-
sure or locking devices on the panels are 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.
4
37
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