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the unit. A minimum clearance equal to the width of the unit is suggested on one side of
the unit for removing the coil or fan assembly. Add dimension of pipe chase, ducts, control
and electrical panels, etc. to minimum clearances. Allow additional clearance as required
by local and national codes.
•
It is also necessary to consider access requirements for safe operation and maintenance
of the unit, and power and control panels. Local health and safety regulations, or practical
considerations for service replacement of large components (such as coil), may require
larger clearances.
•
Clearance dimensions provided elsewhere are necessary to maintain proper service
access. If clearances given are not maintained, service the unit will be more difficult or
impossible maintain.
WARNING:
Risk of improper moving, can cause equipment damage,
injury or death.
WARNING:
Before removing from the packaging inspect the unit for any
damage. Report any damage to the carrier and file a damage claim.
2.4.
Room Considerations
Precision air conditioning equipment is designed to control spaces within close tolerances of
temperature and humidity. However, the room must be built with a proper vapor barrier. A film of
polyethylene is often used on walls and ceilings. Walls and floors must also be painted with
vapor-seal paint. Failure to provide a vapor barrier can compromise space conditions.
Introduction of outside air into the space should be minimized. Outside air in excess of 5% of the
total circulated air volume can have a significant effect on the overall space conditions and
result in poor space control.
•
Install the units as close as possible to the largest heat load.
•
For floor units, verify that the floor is level, solid and enough to support the unit. The
equipment must be level to operate properly and prevent damage to the internal
components. Shimming and/or grouting may be necessary. This is to ensure the unit
base is on a perfectly flat plane.
•
It is recommended that support is structurally engineered to prevent flexing, sagging or
twisting. Do not obstruct door operation, filter access, piping, electrical control panel or
control connections.
•
Avoid the transfer of vibrations to the mounting materials which may cause audible noise.
2.5.
Equipment Handling and Rigging
WARNING:
Only properly trained personnel wearing appropriate safety
head- gear, gloves, shoes and glasses should attempt to move the unit,
lift it, remove packaging or prepare the unit for installation.
2.5.1. Door and Rear Panel Removal