Prior to unit installation, a thorough review of the site should be made to verify that the structure is adequate to support the unit’s weight. The routing of electrical services, ductwork, and piping must be coordinated in order to maintain accessibility to the unit for maintenance and servicing.

The unit must be accessible for regular maintenance. Failure to maintain the unit will shorten its useful life and void all warranties. 24”-36” of clearance is preferred at all access panels and at the filter box. A minimum clearance of 18” is required at all access panels to allow for equipment service (refer to submittal documentation for service panels and special configurations). Clearances for electrical panels are as required by all applicable codes (typical minimum is 36”).

Electrical boxes may be mounted on hinges to facilitate access to internal components. Do not place unit in a manner that will impede the electrical box from rotating freely. Refer to your submittal drawings for specific unit layout and custom access configurations, if applicable.

Split DX and Heat Pump systems are subject to maximum piping limitations, see the refrigerant pipe sizing information for details. Long distances and elevation changes can reduce the overall efficiency of refrigerant based systems. Extended piping runs increase the required line size, the cost of refrigerant piping, and the refrigerant charge required for the system. To minimize piping costs and maximize unit performance, it is recommended to select component placement to minimize the length of the piping run.

One of the most significant site factors that can affect the performance of your unit and its ability to maintain space conditions is the insulation and vapor barrier installed in the space. AboveAir Technologies recommends that the insulation and vapor barrier installation meet the standards of ASHRAE/ANSI 90.1 or the local code as a minimum for optimum unit operation. In particular, the vapor barrier is vital to properly maintaining space conditions; leakage causes increased heating, cooling, humidification, and dehumidification loads. Failure to provide adequate insulation and a proper vapor barrier can lead to unstable room conditions, poor space control, and increased operational costs.

Units are shipped on a skid in order to ease movement and are designed to be kept in the orientation in which they are shipped. This orientation must be maintained at all times during installation. Do not drop the unit. Use spreader bars or a top wooden skid to protect the unit if it is being lifted via crane. AboveAir Technologies units should only be moved by pallet jack, rollers, or other similar device. Refer to unit documentation or shipping information for weights.

While various internal components may have their own internal vibration isolation, AboveAir Technologies recommends that all of its equipment be provided with external vibration isolation to maximize equipment life and to minimize noise generation. Floor-mounted units may be mounted on vibration isolation pads or spring isolators. Spring isolators are recommended for ceiling hung units. Vibration isolators may be provided with your unit or field-supplied. Refer to your unit submittal and packing list to determine if vibration isolators have been supplied by the manufacturer.

Use appropriately sized threaded rod (3/8” minimum diameter, field-supplied) with proper washers and locknuts to hang equipment. Consult local code and your project documentation for other requirements. Unit should be lifted into place from underneath. Refer to unit documentation for the unit weight.

Floor mounted equipment is designed to be mounted directly on to a slab floor or pad. If mounted on a concrete pad, the pad should be a minimum of 2” above ground level and extend at least 2” beyond the unit on all sides. Consult local code and your project documentation for other requirements.