Hallowell Acadia 024 - Step 3 - Clearance Requirements; Figure 1 - Clearance Requirements

INSTALLATION STEPS
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(NOTE) On rooftop applications, mount on a level platform or frame. Place the Acadia outdoor unit above a load-bearing wall
and isolate the unit and line set from the structure. Arrange supporting members to adequately support the system and minimize
transmission of vibration to the building. Consult local codes governing rooftop applications.
(CAUTION) Do not allow POE oil lubricant to come into contact with roofing material(s). POE oil lubricant may deteriorate
certain types of synthetic roofing.
(NOTE) The Acadia outdoor unit must be level to within ±3 degrees.
Step 3 — Clearance Requirements
When installing this system, allow sufficient space for airflow, clearance, refrigerant piping, wiring, and service.
Allow at least 30-in. (76-cm.), 24-in. minimum, of clearance at the service end of the Acadia outdoor unit, and 48-in. (122-cm.)
minimum above the unit for proper airflow. Recommended clearance on the remaining sides is 18-in. (46-cm.), 12-in. (30.5-cm.)
minimum. The Acadia outdoor unit is not to be installed in any type of enclosed structure.
Maintain a distance of 36-in. (91-cm.) between units in multi-unit applications.
Position the unit(s) so that ice, snow, or water from roof or eaves cannot fall directly or indirectly on the Acadia outdoor unit.
Cover piping to ensure that ice and snow will not damage the refrigerant lines and insulation.
(NOTE) On rooftop applications, locate the Acadia outdoor unit at least 12-in. (30.5-cm.) above the roof surface.
Figure 1 - Clearance Requirements