Daikin EWWQC10AJYNN/A [7/130] Installation

ESIE 07-05 Introduction

1.5 Installation

Before any operation please check the instruction for use.

Warning Installation and maintenance are to be performed only by qualified personnel who are familiar with

local codes and regulations, and who are experienced with this type of equipment. Must be avoided

the installation of the unit in places that could be considered dangerous for maintenance operations.

Receiving and

handling

Inspect the unit immediately after receipt for possible damage. The unit is shipped ex-factory and all

claims for handling and shipping damage are the responsibility of the consignee. Leave the shipping

skid in place until the unit is in final position. This will aid in handling the equipment. Use extreme care

when rigging the equipment to prevent damage to the control centre, or refrigerant piping. See

Dimensional Data for the centre of gravity of the unit.

Location A levelled and sufficiently strong floor is required. If necessary, additional structural members should

be provided to transfer the weight of the unit to the nearest beams.

Rubber-in-shear isolators can be furnished and field placed under each corner of the package. A

rubber anti–skid pad should be used under isolators if hold-down bolts are not used.

Vibration isolator in all water piping connected to the chiller are recommended to avoid straining the

piping and transmitting vibration and noise.

Compressor

condensation

Condensation occurs on the compressor surface when the temperature of the compressor surface is

lower than the ambient dew point temperature. Drain pans with drain connections are provided

underneath each compressor to collect the condensate. The compressor motor housing extends past

the drain pans. Install a floor drain close to the unit to collect condensate from motor housing and

condensate pans.

Water treatment If unit is operating with a cooling tower, clean and flush cooling tower. Make sure tower "blowdown" or

bleedoff is operating. Atmospheric air contains many contaminants which increases the need for water

treatment. The use of untreated water may result in corrosion, erosion, sliming, scaling, or algae

formation. A water treatment service is recommended. Daikin is not responsible for damage or faulty

operation from untreated or improperly treated water.

Head pressure

control, tower

system

The minimum entering water temperature to the condenser must not be lower than 15 °C at full tower

water flow. If lower temperature water is used, the flow must be reduced proportionally. Use a

three-way bypass valve around the tower to modulate the condenser water flow. Figure 1 shows a

three-way pressure actuator water regulating valve used for cooling applications. This regulating valve

will assure an adequate condensing pressure if the inlet condenser water temperature falls below

15 °C.

ESIE07-05.book Page v Friday, December 21, 2007 3:21 PM