Snow And Ice Conditions; Clearance Requirements; Outdoor Unit Clearance; Figure 3-4 Outdoor-Unit Clearances - Emerson Liebert SRC18 User Manual

Installation
3.2.3

Snow and Ice Conditions

In climates that experience snow build-up, place the unit on a raised platform to ensure condenser air flow.
The raised support platform must be high enough to allow the unit to remain above possible snow drifts.
Mount the unit on a field-provided snow stand at a minimum height that is equal to the average annual
snowfall plus 20 inches. Design the mount base to prevent snow accumulation on the platform in front or
back of the unit case. If necessary, provide a field fabricated hood to keep snow and ice and/or drifting
snow from accumulating on the coil surfaces. Use inlet and discharge duct or hoods to prevent snow or
rain from accumulating on the fan inlet and outlet guards. Best practice prevents snow from accumulating
on top of the unit. Consider the tie-down requirements in case of high winds or where required by local
codes.
CAUTION
!
Risk of run-off water freezing on sidewalks and driveways. Can cause falls and injuries. When
selecting the location for the outdoor unit, be sure to choose an area where run-off from defrost will
not accumulate and freeze on sidewalks or driveways.

3.3 Clearance requirements

Proper airflow through the outdoor unit coil is critical for correct unit operation. When installing, consider
service, inlet and outlet, and minimum allowable space requirements as illustrated in Figure 3-4.
3.3.1

Outdoor Unit Clearance

Specific clearance requirements are for the wall-mount systems. Figure 3-4 shows the overall minimum
clearances that must be observed for safe operation and adequate airflow around the outdoor unit.

Figure 3-4 Outdoor-unit clearances

When placing the outdoor unit under an overhang, awning, sunroof or other "roof-like" structure, observe
the clearance requirements (as shown in Figure 3-5) for height in relation to the unit. This clearance
ensures that heat radiation from the condenser is not restricted around the unit. See Figures 3-6 and 3-7
for recommendations when other obstacles are present.
Adhere to all clearance requirements if installing the unit on a roof. Be sure to level the unit and ensure that
the unit is adequately anchored. Consult local codes for roof-top mounting requirements.
NOTE
Do not place the unit where animals and/or plants will be in the path of the
warm air, or where the warm air and/or noise will disturb neighbors.
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Liebert SRC User Manual
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