Installation
22 I
nstallation
When installing units on a roof, the structure must be capable of supporting the total weight of the unit,
i
ncluding a padded frame unit, rails, etc., which should be used to minimize the transmission of sound or
vibration into the conditioned space.
Factory preferred tie-down method (Optional)
Note:
These instructions are intended as a method to tie-down system to cement slab as a securing procedure for
high and areas. It is recommended to check Local codes for tie-down methods and protocols.
Step 1: Prior to installing clear pad of debris.
Step 2: Ensure cement pad is level.
IMPORTANT: Then cement pad must be made of HVAC-approved materials and must be the proper
thickness to accommodate fasteners.
Step 3: Center unit onto pad.
Step 4: Fasten 4 L-shaped stainless steel braces onto cabinet base using 4 1/4” * 1/2” Hex washer head
stainless steel self-tapping screws where indicated in following picture.
IMPORTANT: Do not use screws longer than indicated 1/4” * 2/3” and make sure that the brace is attached
o
n center of base ban where indicated in Fig.7. Damage will occur to system.
Step 5: Drill 4 holes into cement base ensuring holes are 2 1//2”dp.
Step 6: Assemble unit to cement pad using 4 1/4” * 2” Hex washer head
cement screws make sure not to over tighten.
Step 7:Finish unit assembly process as indicated in installation manual.
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