Panasonic R410A service manual Duct for Fresh Air, Good Not good

6-20. Duct for Fresh Air

There is a duct connection port (knock-out hole) at the right-rear on the panel top of the indoor unit for drawing in fresh air. If it is necessary to draw in fresh air, remove the cover by knocking it out and connect the duct to the indoor unit through the connection port. (Fig. 1-63)

If connection at the right-rear on the panel top is not appropriate, another duct connection port can be made by cutting an opening on the left side of the rear panel of the indoor unit as shown in Fig. 1-64.

6-21. Installing the Drain Piping

Prepare a standard PVC pipe for the drain and connect it to the indoor unit drain pipe with the supplied hose clamps to prevent water leaks.

1 Connect the drain piping so that it slopes downward from the unit to the outside. (Fig. 1-65)

Never allow traps to occur in the course of the piping.

Insulate any piping inside the room to prevent dripping.

Use the supplied drain pipe to connect the drain pipe with the drain outlet of the indoor unit.

After connecting the drain pipe securely, wrap the supplied drain pipe insulator around the pipe, seal the gap at the drain socket with the supplied black insulation tape, then secure it with clamps.

(Fig. 1-66)

After the drain piping, pour water into the drain pan to check that the water drains smoothly.

Check local electrical codes CAUTION and regulations before

obtaining wire. Also, check any specified instruction or limitations.

1. Specifications

Duct connection port (Knock-out hole)

Panel Top

Fig. 1-63

Right side

Rear side

		A
		4-11/32"
		B
		3-15/16"
		Cut this portion
	S-26PT1U6	S-36PT1U6, S-42PT1U6
A	3-15/16"	7-3/32"
B	1-3/8"	1-31/32"

Fig. 1-64

Min. 1/100

Good

Not good

Fig. 1-65

Drain pipe	Adhere with
clamp	PVC adhesive. Hard PVC pipe
(supplied)
	(not supplied)

Indoor unit

Side		Drain hose
Packing softened	Drain hose	adapter
(supplied)	(supplied)	(supplied)

Fig. 1-66

1-92