
Installation guide
51
3. Concealed Box work
3-1. Concealed Box work
1) Objectives
- The concealed box aims at enhancing the interior inside the building by burying the drains, the
copper pipes, the insulation materials, and the wires in the earlier phase, when you need to
install an indoor unit
2) Functions
(1) Buried in the wall on the pipe installation site and connecting the pipes, the drains and the wires.
(2) Copper pipe protection, enhancing the exterior.
(3) Mounting a pressure gauge to check the air tightness at any time.
Concealed box Buried box connection board
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