Assessments - 3, GPA: 5 ( )

Fabricante : Heatcraft Refrigeration Products Arquivo Tamanho: 792.29 kb Arquivo Nome : H-IM-RACC.pdf Língua de Ensino:

Use of vibration pads or isolators is recommended. The roof must be strong enough to support the weight of the unit. Figure 1: Suggested Rigging © 2007 Heatcraft Refrigeration Products LLC Remote Air-Cooled Condenser Remote Air-Cooled Condenser Installation and Operations Manual, August 2007 The condenser should be located no closer than four feet from any wall or other obstruction to provide sufficient clearance for air entrance. Do not attach ductwork to the coil inlet or fan outlet. Care should be taken to avoid air recirculation conditions that can be caused by sight screening, walls, etc. Keep unit fan discharge away from any building air intakes. Space and Location Requirements The most important aspect in selecting a location for air-cooled equipment is a supply of ambient air to the condenser and the adequate removal of heated air from the condenser area. If the requirement for adequate air circulation is not adhered to, higher head pressures will result, creating poor operation and possible failure of equipment. Units must not be located in the vicinity of steam, hot air or fume exhausts. Walls or Obstructions The unit should be located so that air may circulate freely and not be recirculated. For proper air flow and access, all sides of the unit should be a minimum of the width of the unit away from any wall or obstruction. It is preferable for this distance be increased whenever possible. Care should be taken to see that ample room is left for maintenance through access doors and panels. Overhead obstructions are not permitted. When the unit is in an area where it is enclosed by three walls the unit must be installed as indicated for units in a pit. Units In Pits The top of the unit should be level with the top of the pit and side distance increased to two times the width of the unit. If the top of the unit is not level with the top of pit, discharge cones or stacks must be used to raise discharge air to the top of the pit. This is a minimum requirement. Multiple Units For units placed side by side, the minimum distance between units is the width of the largest unit. If units are placed end to end, the minimum distance between units is four feet. Decorative Fences Fences must have 50 percent free area, with a one-foot undercut, a minimum clearance equal to the width of the unit and must not exceed the height of the unit. If these requirements are not met, unit must be installed as indicated for units in pits. Sound and Vibration Units should be installed away from occupied spaces to reduce the transmission of sound and vibration to occupied spaces. Units should be mounted over corridors, utility areas, rest rooms and other auxiliary areas where high levels of sound are not an important factor. Sound and structural consultants should be retained for recommendations. The refrigerant piping should be flexible enough to prevent the transmission of noise and vibration from the unit into the building. If the refrigerant lines are to be suspended from the structure of the building, isolation hangers should be used to prevent the transmission of vibration. Where piping passes through a wall, it is advisable to pack fiberglass and sealing compound around the lines to minimize vibration and retain flexibility in the lines. The unit needs to be secured in its final location. Holes are provided in the base runner for this purpose. *W = Total width of the condenser. Vertical Condenser Vertical airflow units should be located no closer than the width of the unit from a wall or other obstruction. If two or more units are to be positioned in the same area, a similar distance should be maintained between adjacent units. Sufficient free area should be left around and below unit to avoid air restriction to coil. Leg Assembly for Vertical Airflow Installation (Models 008-016; 1-3) Assemble the unit’s two legs (Figure 3, item 2) using three 1/4 - 20 x 3/4” long bolts per leg. Captive nuts are prov...

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