Panasonic WU-144MF1U9E ECOi/VRF Systems Indoor Unit Installation Manual - Page 36

See 5. HOW TO PROCESS TUBING, 3-32. Installing the Drain Piping and 4. ELECTRICAL WIRING.

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Page 36 highlights

3-28. Preparations Before Installation (1) Confirm the positional relationship between the unit and suspension bolts. (Refer to the diagram.) • Install the inspection opening on the control box side where maintenance and inspection of the control box are easy. The drain pump can only be inspected through the bottom of the unit. Install the inspection opening also in the lower part of the unit. Air discharge Air intake (Inspection access) 2.3 Arrow view A Inspection access (Field supply) 2.7 A Ceiling Fig. 3-104 Unit: ft. (2) Make sure the range of the unit's external static pressure is not exceeded. (See the technical documentation for the range of the external static pressure setting.) (3) Open the installation hole. (Pre-set ceilings) • Once the installation hole is opened in the ceiling where the unit is to be installed, pass refrigerant piping, drain piping, transmission wiring, and remote control wiring (It is not necessary if using a wireless remote controller) to the unit's piping and wiring holes. See "5. HOW TO PROCESS TUBING, 3-32. Installing the Drain Piping" and "4. ELECTRICAL WIRING". • After opening the ceiling hole, make sure ceiling is level if needed. It might be necessary to reinforce the ceiling frame to prevent shaking. Consult an architect or carpenter for details. 3-29. For Bottom Intake For bottom intake, replace the chamber lid and protection net in the procedure shown in the diagram. (1) Remove the Frame Filter Assy. Remove the chamber lid. (2) Refer to the diagram to attach the chamber lid and Frame Filter Assy in the direction of the arrow. Note: Attach the lid with the dummy holes downward. (3) Attach the Frame Filter Assy (supplied) in the manner shown in the diagram. (1) Air intake (3) Main unit Frame Filter Assy Chamber lid Frame Filter Assy Attach the Frame Filter Assy to the main unit while pushing the tip of the latches in the direction of the arrow. Air discharge Dummy hole (2) Dummy hole Chamber lid Air discharge Air intake Frame Filter Assy In case of bottom side In case of back side Fig. 3-105 36 73'@*OEPPS@64JOEC

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36
A
2.3
2.7
Unit: ft.
(Inspection access)
Arrow view A
Inspection access
(Field supply)
Ceiling
Air intake
Air discharge
3-28. Preparations Before Installation
(1) Confirm the positional relationship between the unit and suspension
bolts. (Refer to the diagram.)
•
Install the inspection opening on the control box side where
maintenance and inspection of the control box are easy.
The drain pump can only be inspected through the bottom of the unit.
Install the inspection opening also in the lower part of the unit.
(2) Make sure the range of the unit’s external static pressure is not exceeded.
(See the technical documentation for the range of the external static pressure setting.)
(3) Open the installation hole. (Pre-set ceilings)
•
Once the installation hole is opened in the ceiling where the unit is to be installed, pass refrigerant piping, drain
piping, transmission wiring, and remote control wiring (It is not necessary if using a wireless remote controller) to
the unit’s piping and wiring holes.
See “5. HOW TO PROCESS TUBING, 3-32. Installing the Drain Piping” and “4. ELECTRICAL WIRING”.
•
After opening the ceiling hole, make sure ceiling is level if needed. It might be necessary to reinforce the ceiling
frame to prevent shaking. Consult an architect or carpenter for details.
3-29. For Bottom Intake
For bottom intake, replace the chamber lid and protection net in the procedure shown in the diagram.
(1) Remove the Frame Filter Assy.
Remove the chamber lid.
(2) Refer to the diagram to attach the chamber lid and Frame Filter Assy in the direction of the arrow.
Note: Attach the lid with the dummy holes downward.
(3) Attach the Frame Filter Assy (supplied) in the manner shown in the diagram.
Fig. 3-104
Air intake
Frame
Filter Assy
Chamber lid
Dummy hole
Dummy hole
Air discharge
Chamber lid
Air discharge
Air intake
Frame
Filter Assy
(1)
(2)
(3)
Attach the Frame Filter Assy to the
main unit while pushing the tip of
the latches in the direction of the
arrow.
Main unit
Frame Filter Assy
In case of bottom side
In case of back side
Fig. 3-105
VRF_Indoor_US.indb 36
VRF_Indoor_US.indb
36
2011/09/30 12:23:08
2011/09/30
12:23:08