Lennox LICH4012021T431E-1, Service Manual

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Indoor unit installation
Installation
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4. After you select an installation location, align the refrigerant pipes, drain pipes, as well as indoor and
outdoor wires with their connection points before mounting the unit.
5. Drill 4 holes 10cm (4”) deep at the ceiling hook positions in the internal ceiling. Be sure to hold the drill at a
90° angle to the ceiling.
6. Secure the bolt using the washers and nuts provided.
7. Install the four suspension bolts.
8. Mount the indoor unit with at least two people to lift and secure it. Insert suspension bolts into the unit’s
hanging holes. Fasten them using the washers and nuts provided.
9. Mount the indoor unit onto the hanging screw bolts with a block. Position the indoor unit flat using a level
indicator to prevent leaks.
Note: Confirm the minimum drain tilt is 1/100 or more.
3.5.4.
Duct and accessories installation
1. Install the filter (optional) according to the size of the air inlet.
2. Install the canvas tie-in between the body and the duct.
3. Air inlet and air outlet duct should be apart far enough to avoid air passage short-circuit.
4. Connect the duct according to the following diagram.
5.Please refer to the following static pressure to install..
Model(KBtu/h) Static Pressure(Pa)
18 0-100
24 0-160
36 0-160