3.9 FACTORY-PREFERRED TIE-DOWN METHOD
Step 3: Using L-shaped bracket (see Fig. 8, Detail B) to locate holes on concrete and drill
pilot holes which is at least 1/4” deeper than fastener being used.
IMPORTANT
Self drilling screws to base pan should not exceed 3/8” long to avoid damaging
coil.
Step 4: Using conventional practices to install brackets, tighten concrete fasteners and
self-tapping screws (See Fig.8).
NOTE
: 1. One bracket for each side. For extra stability, 2 brackets for each side.
2. Do not over-tighten the concrete fastener to avoid weakening the concrete.
Step 1: Prior to installing clear pad of debris.
IMPORTANT
Then cement pad must be made of HVAC-approved materials and must be the
proper thickness to accommodate fasteners.
Step 2: Center and level unit onto pad.
Fig.7 RECOMMENDED ELEVATED INSTALLATION
ELEVATION ABOVE ANTICIPATED
SNOW IS NECESSARY
BASE PAD
(CONCRETE OR
OTHER SUITABLE
MATERIAL)
BASE PAN (BOTTOM VIEW) DO NOT
OBSTRUCT DRAIN HOLES
(SHADED)
IMPORTANT NOTE:
These instructions are intended to provide a method to tie-down system to cement slab
as a securing procedure for high wind areas. It is recommended to check Local Codes
for tie-down methods and protocols.
Drain holes
14
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