JOHNSON CONTROLS
33
FORM 150.27-NM1
ISSUE DATE: 09/30/2015
4
SECTION 4 – INSTALLATION
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
The following items, 1 through 5, must be checked be-
fore 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
(see ASHRAE
handbook Section 215 and 195).
5. Check to see that the unit is installed and operated
within limitations
(refer to LIMITATIONS).
The following pages outline detailed procedures to be
followed to install and start-up the chiller.
LOCATION REQUIREMENTS
To achieve optimum performance and trouble-free ser-
vice, it is essential that the proposed installation site
meets with the location and space requirements for
the model being installed. For dimensions, weight and
space requirements, including service access details,
refer to
The clearances recommended are nomi-
nal for the safe operation and mainte-
nance of the unit and power and control
panels. Local health and safety regula-
tions, or practical considerations for
service replacement of large components,
may require larger clearances than those
given in Section 5 Technical Data.
Units should be installed indoors where they are not
exposed to rain or water splash. Chillers should be
located near a drain. The use of chillers in corrosive,
dusty or explosive atmospheres should be avoided un-
less the unit is properly protected. A unit in a clean
room will run best, require least maintenance, and last
longest. Heat or ventilation may be required to main-
tain the ambient between 40°F and 115°F (4 4°C and
46.1°C).
Units are designed for indoor installation and not in-
tended for wet, corrosive or explosive atmospheres. In-
stallation should allow for water drain, ventilation and
sufficient clearance for service, including tube cleaning.
UNIT ISOLATION (NOISE SENSITIVE LOCATION)
For installation in equipment rooms near noise-critical
areas, common walls should be of adequate sound at-
tenuating construction, all doors should be tightly gas-
keted, and the unit should have vibration isolators fitted.
FOUNDATION
The unit must be installed on a suitable flat and level
concrete base that extends to fully support the unit base
frame. The chiller foundation must be rigid to reduce
vibration transmission to a minimum. All upper story
installations should use vibration isolators under the
unit base. To maintain isolator efficiency, no mechani-
cal ties should be made to the building. Properly se-
lected flexible connectors and piping isolators are rec-
ommended. All the above recommendations will help
to reduce vibration transmission and ‘result in a quieter
operation.
On basement foundations remove a portion of the base-
ment floor so that a concrete base can be poured resting
on the ground, with a corkboard installed on both sides,
and a waterproof sealing compound.
