Installation - Daikin WGZ030DW Installation And Maintenance Manual

Installation

Installation
Installation
Note: Installation and maintenance are to be performed only
by qualified personnel who are familiar with local codes and
regulations, and experienced with this type of equipment.
Avoid contact with sharp edges. Personal injury can result
Location
WGZ chillers are intended only for installation in an indoor or
weather protected area consistent with the NEMA 1 rating on
the chiller, controls, and electrical panels. Equipment room
temperature for operating and standby conditions is 40°F to
122°F (4.4°C to 50°C).
Because of the electrical control devices, the units should not
be exposed to the weather. A plastic cover over the control box
is supplied as temporary protection during shipment. A
reasonably level and sufficiently strong floor is required for
the water chiller. If necessary, additional structural members
should be provided to transfer the weight of the unit to the
nearest beams.
Space Requirements for Connections and Servicing
The chilled water and condenser water (on units with a water-
cooled condenser) piping enters and leaves the unit from the
right side when looking at the control panel. Left-hand
condenser connections are an option. A clearance of at least 3
feet (1219 mm), or more if codes require, should be provided
beyond this piping and on all other sides and ends of the unit
for general servicing or for changing the compressors, if it ever
becomes necessary. Allow a minimum of 4-foot clearance in
front of the control panel or as required by the NEC or local
codes.
On units equipped with a water-cooled condenser (Type WGZ-
DW) clearance should also be provided for cleaning or
removal of condenser tubes on one end of the unit. The
clearance for cleaning depends on the type of apparatus used,
but can be as much as the length of the condenser (10 feet,
3050 mm). Tube replacement requires the length of the
condenser (as much as 12 feet) plus three feet of workspace.
Figure 1: Lifting the Unit
WG Z1 50-20 0C
UNIT SHOWN
4
CAUTION
SPREADER BARS MUST
BE USED FOR STABILITY
DURING LIFTING OF
ALL SIZE UNITS
This space can often be provided through a doorway or other
opening.
Moving the Unit
Refer to Lifting/Mounting weights beginning on
The packaged unit skid option is strongly recommended for
ease of handling and to help prevent damage if a crane is not
available for rigging at site. Properly designed field supplied
skids or dollies are acceptable. Do not push unit along a floor
without them. The condenserless models (AGZ-DA) are
manufactured with a base suitable for moving with rollers.
All moving and handling of packaged units
performed with skids or dollies under the unit and they should
not be removed until the unit is in the final location. Never put
the weight of the unit against the control box.
In moving, always apply pressure to the base on the skids only
and not to the piping or other components. A long bar will help
move the unit. Avoid dropping the unit at the end of the roll.
If the unit must be hoisted, lift the unit from the removable
lifting arms factory-bolted to each end of the unit adjacent to
the tube sheet by attaching cables or chains to the end of the
arms. A spreader bar must be used to protect the piping,
control panel and other areas of the chiller
lifting arms should be removed and discarded after use.
Do not attach slings to piping or equipment. Do not attempt to
lift the unit by lifting points mounted on the compressors.
They are for lifting only the compressor should one need to be
removed from the unit. Move unit in the upright horizontal
position at all times. Set unit down gently when lowering from
the truck or rollers.
Placing the Unit
The small amount of vibration normally encountered makes
this unit particularly desirable for basement or ground floor
installations where the unit can be mounted directly to the
floor. The floor construction should be such that the unit will
not affect the building structure, or transmit noise and
vibration into the structure.
3319 26901 REV. 0 A
page 25.
(Figure 1) must be
(Figure 1). The
(2) 2"
Lifting
Holes
Removable
Lifting
Bar
IM 1131-2