Installation - Lennox LPH036-160P434 User And Installation Manual

5. INSTALLATION

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5 1 Lifting
l Rigging cables should have adequate capability to resist 3 times weight of unit. Before lift,
please check and ensure that hooks are holding tightly to unit and lifting angles are no less
than 60°.
l Cloth material or hard-paper should be padded in the contact place between unit and rigging
cable. Rigging cable should be entwined a round at the hook for prevent danger by cable slip
because of weight unbalance.
l During lifting, anyone forbidden lingering under the lifting unit.
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5 2 Rooftop units
l For roof top applications using a field fabricated frame and ducts, use the following procedure:
l The frame must be located and secured by bolting or welding to the roof. Flashing is required.
l The hole in the roof must be prepared in advance of installing the unit.
l Secure the ducts to the roof.
l Place the unit on the frame or roof curb.
l Secure the unit to the frame or roof curb.
l Insulate any ductwork outside of the structure with at least two (2) inches of insulation and then
weatherproof. There must be a weatherproof seal where the duct enters the structure.
l Complete the installation according to the instructions in the following sections of this manual.
Typical rooftop application with frame
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Fig 5 1
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Fig 5 2
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