Installation
Determine location
Read these instructions in their entirety before beginning the installation. For optimum
performance and trouble-free service, it is essential that the installation site meets the location and
space requirements for the model being installed.
Important:
Make sure that the minimum service access space is maintained for cleaning and
maintenance purposes.
The units are designed for outside installation and can be installed at ground level on a suitable
flat level foundation easily capable of supporting the weight of the unit, or on a suitable rooftop
location. In both cases, an adequate supply of air is required. Avoid locations where the sound
output and air discharge from the unit might be objectionable.
The location must be selected for minimum sun exposure and away from boiler flues and other
sources of airborne chemicals that could damage the condenser coils and steel parts of the unit.
If the unit is located in an area that is accessible to unauthorized persons, install a protective
fence to restrict access to the unit. This can help to prevent the possibility of vandalism, accidental
damage, or possible harm caused by unauthorized removal of protective guards or opening panels
to expose rotating or high voltage components.
Foundation requirements
Mount units on a flat and level foundation, either on a ground or roof location, that can support the
entire operating weight of the equipment. Contact your nearest Johnson Controls Sales Office for
shipping and operating weights.
Ground locations
For ground level locations, note the following installation considerations:
• The unit must be installed on a suitable flat and level concrete base that extends to fully support
the two side channels of the unit base frame. Use a one-piece concrete slab with footings that
extend below the frost line.
• To prevent operational noise telegraphing to the building, do not tie the slab to the main
building foundation.
• Mounting holes, sized 5/8 in. (15.88 mm), are provided in the base rails for bolting the unit to its
foundation. See
Figure 32
for locations on units with 20 fans and
Figure 33
for locations on units
with 26 fans.
• For ground installations, take precautions to protect the unit from tampering by or injury to
unauthorized persons. Fasteners on access panels can prevent casual tampering.
• For additional safety precautions, install unit enclosure options, a fenced-in enclosure, or
locking devices on the panels. Check with local authorities for safety regulations.
Roof locations
For roof locations, note the following installation considerations:
• Provide sufficient structure to safely support the entire operating weight of the unit, service
personnel, and service tooling.
• Do not damage the roof during installation. If the roof is of bonded construction, consult a
building contractor or architect for special installation requirements.
• Use spring isolators to minimize vibration transmission into building structure.
YVAM Air-Cooled Centrifugal Liquid Chiller
24
