McQuay AGZ 035A, Инструкция по установке, эксплуатации и обслуживанию

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IOMM AGZ-3 AGZ 035A through 065A 5
Location
Unit Placement
AGZ units are for outdoor applications and can be mounted on a roof or ground level. Set units on a
solid and level foundation. For roof mounted applications, install the unit on a steel channel or I-
beam frame to support the unit above the roof. For ground level applications, install the unit on a
substantial base that will not settle. A one-piece concrete slab with footings extended below the frost
line is recommended. Be sure the foundation is level (within 1/2” [13 mm] over its length and width).
The foundation must support the operating weights listed in the Physical Data tables beginning on
page 13.
On ground level applications protect the unit against vandalism using the optional base guards or by
erecting a screen fence. The fence must allow free flow of air to the condenser coil for proper unit
operation. The coils are protected by standard wire mesh Coil guards.
Clearances
The flow of air to and from the condenser coil must not be limited. Restricting air flow or allowing
air recirculation will result in a decrease in unit performance and efficiency. There must be no
obstruction above the unit that would deflect discharge air downward where it could be recirculated
back to the inlet of the condenser coil. The condenser fans are propeller type and will not operate
with ductwork on the fan outlet.
Install the unit with enough side clearance for air entrance to the coil and for servicing. Provide
service access to the evaporator, compressors, electrical control panel and piping components as
shown in Figure 3.
Do not allow debris to accumulate near the unit. Air movement may draw debris into the condenser
coil causing air starvation. Give special consideration to low ambient operation where snow can
accumulate. Keep condenser coils and fan discharge free of snow or other obstructions to permit
adequate airflow.
Sound Isolation
The ultra-low sound level of the AGZ chiller is suitable for most applications. When additional sound
reduction is necessary, locate the unit away from sound sensitive areas. Avoid locations beneath
windows or between structures where normal operating sounds may be objectionable. Reduce
structurally transmitted sound by isolating water lines, electrical conduit and the unit itself. Use wall
sleeves and rubber isolated piping hangers to reduce transmission of water or pump noise into
occupied spaces. Use flexible electrical conduit to isolate sound transmission through electrical
conduit. Spring isolators are effective in reducing the low amplitude sound generated by scroll
compressors and for unit isolation in sound sensitive areas.
Service Access
Each end of the unit must be accessible after installation for periodic service. Compressors, filter-
driers, and manual liquid line shutoff valves are accessible. The high pressure control is located in the
control panel when using the Global UNT controller, and on the compressor when using the
MicroTech controller. Low pressure, and motor protector controls are on the compressor. Most other
operational, equipment protection and starting controls are located in the unit control box.
The condenser fan and motors can be removed from the top of the unit.