Pre-Installation Requirements
General Storage
The unit controller and all other electrical/electronic components should be stored in conditions of
Long-Term Storage
For longer periods of storage, allow proper clearance around the unit to perform periodic inspection and maintenance of the equipment.
While the unit is in storage:
•Every two weeks, rotate the fan and motor shaft 30 revolutions by hand.
•Every six months, check fan shaft bearings and grease lines. Add grease using a manual grease gun following the lubrications recommendations in “Fan Bearing Lubrication” on page 51.
Outdoor Storage
Considerations
Outdoor storage is not recommended; however, when outdoor storage is necessary, several things must be done to prevent damage:
Note: Keep the equipment in the original shipping container for protection and ease of handling.
1Select a
2Place the unit on a dry surface or raised off the ground to assure adequate air circulation beneath the unit and to assure no portion of the unit will contact standing water at any time.
3Loosen the belt tension on the drive belts.
4Cover the unit securely with a canvas tarp.
5Do not stack units.
6Do not pile other material on the unit.
Preparing the Unit Site
1Ensure the installation site can support the total weight of the unit. The building roof must be able to support the entire weight of the unit, roof curb and accessories. Refer to the unit submittals for weights.
2Allow sufficient space to allow adequate free air and necessary service access. Refer to submittals for specific minimums.
3Allow room for supply and return piping, ductwork, electrical connections, and coil removal.
4Ensure there is adequate height for condensate drain requirements. See “Drain Pan Trapping” on page 29.
Note: Inadequate height may necessitate
WARNING
Level Foundation!
The floor or foundation must be level and the condensate drain at the proper height for proper coil drainage and condensate flow. Standing water and wet surfaces inside
5Confirm the foundation of the mounting platform is level and large enough to include the unit dimensions (refer to the unit submittals for specific dimensions).
6Provide adequate lighting for maintenance personnel to perform maintenance duties.
7Provide permanent power outlets in close proximity to the unit for installation and maintenance.
8Depending upon job requirements, the customer may need to provide 120 Vac power to the unit controller. Refer to submittals for more information. A dedicated
9Wiring for Custom units must be provided by the installer and must comply with all national and local electrical codes.
10Rooftop curb mounted units must be sealed tightly to the curb. Use proper sealants and roof to curb sealing techniques to prevent water and air leakage.
Note: Preparation of the roof curb or pier mount and roof openings should be completed prior to lifting the unit to the roof.
8 |
|