Drain Piping - Toshiba Carrier RAV-SM122BTP-UL Installation Manual

Mounting filter rails and filters

1
Mount the filter rail so that the hooks fit into the corresponding holes.
(Note that the upper and lower filter rails are not identical.)
2
Mount the filter stopper.
CAUTION
When mounting the rails, push them until the
3 latches click.
3
Slide and push the filters until it stop.
* Insert the filters into the direction which the
arrows, carved on the filters, show.
(2 filters are identical)
Changing from back air intake to under air intake

1
Remove the filters on back of unit.
2
Remove the suction board cover attached to the bottom, and screw it to the back of unit.
3
Mount the supplied rail to the bottom, then set the filter.
Suction board cover
Screw
Suction board cover
* The sizes of the left and right covers of SM242 class unit are not identical. As shown in the figure,
re-mount the covers left-right reversed by facing the hook part upwards.
21-EN
Square hole
Upper filter rail
Fit this hook into
the square hole.
Filter stopper
(accessory)
Lower filter rail
Suction board cover
Hook part
Hook part
Screw
Suction board cover
– 11 –
5

Drain piping

CAUTION
Following the Installation Manual, perform the drain piping work so that water is properly drained.
Apply a heat insulation so as not to cause a dew condensation.
Inappropriate piping work may result in water leakage in the room and wet furniture.
• Provide the indoor drain piping with proper heat insulation.
• Provide the area where the pipe connects to the indoor unit with proper heat insulation. Improper heat insulation
will cause condensation to form.
• The drain pipe must be sloping downward (at an angle of 1/100 or more), and do not run the pipe up and down
(arched shape) or allow it to form traps. Doing so may cause abnormal sounds.
• Restrict the length of the traversing drain pipe to 65.6' (20 m) or less. For a long pipe, provide support brackets
at intervals of 4'11" to 6'7" (1.5 to 2 m) to prevent flapping.
• Install the collective piping as shown in the following figure.
• Do not provide any air vents. Otherwise, the drain water will spout, causing water to leak.
• Do not allow any force to be applied to the connection area with the drain pipe.
4'11" to 6'7" Support
(1.5 to 2 m)
bracket
(Collective
Heat
insulator
Downward slope
1/100 or more
Pipe material, size and insulator

The following materials for piping work and insulating process are locally procured.
Pipe material Hard vinyl chloride pipe VP25 (Nominal outer diameter 1.3" (32 mm))
Insulator
Foamed polyethylene foam, thickness: 0.4" (10 mm) or more
Connecting drain pipe

Insert flexible drain hose into upper drain pipe of main unit as far as it will go. Fix it with hose band.
REQUIREMENT
Mount the flexible drain hose using the hose band without using adhesive.
Flexible
drain hose
As long as possible
(Approx. 3.9" (100 mm))
piping)
Downward slope
1/100 or more
VP30
Flexible
drain hose
Hose band
0.4" (10 mm)
Arched shape
Trap
Incorrect
0.6" (15 mm)
or less
Indoor unit
Hose band
22-EN