Features - McQuay M5RT 90 BR Technical Manual

Features

General Specification
• Package Unit:
McQuay's new range of rooftop packaged units has been developed specifically to suit commercial applications
and are designed to be easy to install, requiring only ducting (and associated fittings), power/ control wiring
and drain piping. Along with the light grey colour, the flat top and compact design gives an aesthetic and neat
appearance when installed in line of sight. The unit cabinet is made of powder coated sheet metal especially
suitable for outdoor use. All parts of the structure are fastened with corrosion resistant screws and bolts.
• Base Beam:
The base beams are fixed and provide a rigid foundation for the entire unit. The beam has the forklift slots and
rigging holes for better handling purpose. It is also designed to allow mounting on a roof curb, the dimension
of the roof curb should be followed strictly in accordance with the installation manual.
• Flexible Air Supply:
Since all the units utilize a belt/ pulley driven supply air fan, the units are able to meet a wide range of supply
air volumes and external static pressures. Furthermore, the supply air fan motors, pulleys and belts (field
supplied) can be easily changed on site to meet exact air flow and ESP requirement if required.
• Convertible Return and Supply Air:
Unit can be easily converted from horizontal to vertical (downward) supply and return air duct configuration
by relocating the panels and supply air fan mounting.
• Scroll Compressor:
Units are equipped with high efficiency and reliable scroll compressors. Each compressor is mounted on
rubber vibration isolators in order to reduce the noise level and vibration transmissions.
• Powder Coated Condensate Drain Pan:
The sheet metal condensate drain pan is powder coated to resist corrosion.
• Slots for 2 inches Return Air Filters:
A 2 inches rail is provided as standard in instances where a field supplied filter casement need to be
installed.
• Higher Energy Efficiency Rating:
The M5RT-BR series is designed in line with market requirement for better energy saving.
Technical Specification
• Compressor
Compressor used in M5RT-BR series Packaged Units are hermetically sealed scroll type. All the compressors
are provided with an internal overload protection.
• Condenser
Condenser coils are manufactured from seamless inner grooved copper tubes mechanically bonded to
aluminium fins to ensure optimum heat transfer. All coils are tested against by Nitrogen holding at 609psig
and highly precise Helium leak test at 235psig.
ALL standard coils are up to 3 rows / 14-16 FPI, 3/8" (9.52mm) O.D. tubes.
Hydrophilic Gold Fin coating (NA549) is offered as standard, which has longer life span under corrosive
environment.
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