Unit installation

INSTALLATION PROCEDURES

PRE-INSTALLATION GUIDELINES

These chillers are designed for outdoor installation and can be installed at ground level or on a suitable rooftop

location. In order to achieve good operation, performance and trouble-free service, it is essential that the proposed

installation location meets the following requirements:

• The most important consideration while deciding upon the location of air cooled chillers is the provision for supply of

adequate ambient air to the condenser and removal of heated discharge air from the condenser. This is

accomplished by maintaining sufficient clearances which have been specified in this manual around the units

and avoiding obstructions in the condenser air discharge area to prevent the possibility of warm air circulation.

Further, the condenser fans are propeller type and are not recommended for use with ductwork or other hindrances

in the condenser air stream. Where these requirements are not complied, the supply or discharge airflow

restrictions or warm air recirculation will cause higher condensing temperatures resulting in poor unit operation,

higher power consumption and possible eventual failure of equipment.

• The unit’s longitudinal axis should be parallel to the prevailing wind direction in order to ensure a balanced air flow

through the condenser coils. Consideration should also be given to the possibility of down-drafts caused by

adjacent buildings, which may cause recirculation or uneven unit airflow. For locations where significant cross winds

are expected, 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.

• The location should be selected for minimum sun exposure and away from hot air sources, steam, exhaust vents

and sources of airborne chemicals that could attack the condenser coils and steel parts of the unit. Avoid locations

where the sound output and air discharge from the units may be objectionable.

• If the location is 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 panels or protective guards exposing rotating or high voltage

components.

• The clearance requirements prescribed in this manual are necessary to maintain good airflow and provide access

for unit operation and maintenance. However, it is also necessary to consider access requirements based on

practical considerations for servicing, cleaning and replacing large components.

• The unit must be installed on a ONE-PIECE, FLAT and LEVELLED {within ½” (13 mm) over its length and width}

CONCRETE BASE that extends fully to support the unit. The carrying or supporting structure should be capable of

handling complete operating weight of the unit as given in the Physical Data tables in this manual.

• For ground level installations, it must be ensured that the concrete base is stable and does not settle or dislocate

upon installation of the unit which can strain the refrigerant lines resulting in leaks and may also cause compressor

oil return problems. It is recommended that the concrete slab is provided with appropriate footings. The slab should

not be connected to the main building foundation to avoid noise and vibration transmission.

• For rooftop installations, choose a place with adequate structural strength to safely support the entire operating

weight of the unit. The unit shall be mounted on a concrete slab similar to ground installations. The roof must be

reinforced for supporting the individual point loads at the mounting isolator locations. It must be checked and

ensured that the concrete base is perfectly horizontal and levelled, especially if the roof has been pitched to aid in

water removal. It should be determined prior to installation if any special treatment is required to assure a levelled

installation else it could lead to the above mentioned problems.

SPACE REQUIREMENTS

Dimensional drawings for all chiller models are given in the following pages. In order to ascertain space requirement

for an installation, refer to the respective chiller drawing: