MD ANDERSON Project No. XX-XXXX
MD ANDERSON PROJECT NAME
A/E Project No.
Month, 00, 0000
Provide access doors to allow access to both sides (upstream and downstream) of filter racks, both sides of the fan section, and both sides of the coils. Access doors shall be capable of opening full 90 degree swing with allowance to preclude the door from opening into and causing damage to coil, filter bank, etc, or opening out and interfering and causing damage to insulation on the piping connection to a coil.
[Engineer shall determine if the following option is required: Provide air lock access upstream and downstream of the fan array section and cooling coil section. The air lock must be large enough to allow for the exchange of fan assemblies and components while preventing the infiltration of unconditioned air or the loss of supply air flow to the respective air conditioned spaces.]
Each fan/motor cube shall be designed for quick replacement of the fan/motor assembly, and capable of passing through a minimum 30-inch wide, access door located on the discharge side of the fan wall array.
Access doors shall be double wall, insulated the same as wall panels, and the opening framed with thermal break construction.
Door size shall be at least 18 inches wide and full panel height up to 72-inch tall units. For units above 72 inches tall, provide 72-inch high doors. For panels over 36 inches wide, provide 36-inch wide doors.
Access door construction shall equal or exceed the quality of air handler casing materials as specified herein.
Each door shall have a minimum 8-inch by 6-inch double glazed view port window, capable of withstanding the total developed pressure of the unit. View port windows on access doors to sections shall be made of glass to block UV rays where UV lamps are located.
Doors shall be hinged using either heavy-duty adjustable stainless steel butt hinges or a continuous adjustable stainless steel piano hinge, extending along the entire edge of the door, except for a maximum of 2-inches at each end or CAD plated aluminum with SS pins fully adjustable in 3 axis. If butt hinges are used, provide two (2) per door for up to 36-inch high doors and three (3) per door for taller doors. Provide minimum of two (2) latches on doors taller than 18 inches and three (3) latches on doors over 36 inches long. Latches shall have a thermal break with roller cam latch and handles on both sides of the access door.
All access doors shall open against positive air pressure, unless they are the outer doors of the air lock entrances or approved by the Owner in writing.
Rigging Performance Requirements:
Provide units that include lifting lugs and are suitable for rigging without requiring additional support frames or rails.
Provide units that may be lifted without permanent deformation to the housing, base or internal components.
Indicate physical balance point on unit bases.
Fans and related components
The University of Texas
CUSTOM AIR HANDLING UNITS WITH FAN ARRAY SYSTEMS
MD Anderson Cancer Center
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