FORM
INSTALLATION
LOCATION REQUIREMENTS
To achieve optimum performance and
It is important to ensure that the minimum service ac- cess space is maintained for cleaning and maintenance purposes.
OUTDOOR INSTALLATIONS
The units can be installed at ground level, 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 may be objectionable.
The location should be selected for minimum sun ex- posure and away from boiler flues and other sources of airborne chemicals that could attack the condenser coils and steel parts of the unit.
If located in an area which is accessible to unauthorized persons, steps must be taken to prevent access to the unit by means of a protective fence. This will 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.
For ground level locations, 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. A
On rooftop locations, choose a place with adequate structural strength to safely support the entire operating weight of the unit and service personnel. The unit can be mounted on a concrete slab, similar to ground floor locations, or on steel channels of suitable strength. The channels should be spaced at the same centres as the vibration mounting holes in the unit base frame and must be at least
Any ductwork or attenuators fitted to the unit must not have a total static pressure resistance, at full unit airflow, exceeding the capability of the fans installed in the unit.
INDOOR INSTALLATIONS
The unit can be installed in an enclosed plant room providing the floor is level and of suitable strength to support the full operating weight of the unit. It is essential that there is adequate clearance for airflow to the unit. The discharge air from the top of the unit must be ducted away to prevent recirculation of air within the plant room. If common ducts are used for fans,
The discharge ducting must be properly sized with a total static pressure loss, together with any intake static pressure loss, less than the available static pressure capability for the type of fan fitted.
The discharge air duct usually rejects outside the build- ing through a louver. The outlet must be positioned to prevent the air being drawn directly back into the air intake for the condenser coils, as such recirculation will affect unit performance.
LOCATION CLEARANCES
Adequate clearances around the unit(s) are required for the unrestricted airflow for the
For locations where significant cross winds are ex- pected, such as exposed roof tops, an enclosure of solid or louver type is recommended to prevent wind turbulence interfering with the unit airflow.
When units are installed in an enclosure, the enclosure height should not exceed the height of the unit on more than one side. If the enclosure is of louvered construc- tion the same requirement of static pressure loss applies as for ducts and attenuators stated above.
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YORK INTERNATIONAL | 29 |
