Drain Piping Work - Toshiba RAV-SM2242DT-E Installation Manual

Wire connection change of fan motor
This duct is composed of 3 fan motors.
To change external static pressure by duct resistance, connect the 3 connectors of the orange lead wires that are
connected to the underside of the fan tap changing terminal block to the same number (F1, F2 or F3) terminal.
The wires of the fan motor has been connected to (F2) [External static pressure 137 Pa (14 mmAq)] as factory
default.
Low static pressure (F1)
FM FM
Fan motor Fan motor Fan motor
F 1 F 2 F 3 F 4 F 1 F 2 F 3 F 4
FAN3 FAN2
Standard (Middle) static pressure (F2)
FM FM
Fan motor Fan motor Fan motor
F F F F F F F F
1 2 3 4 1 2 3 4
FAN3 FAN2
High static pressure (F3)
FM FM
Fan motor Fan motor Fan motor
F F F F F F F F
1 2 3 4 1 2 3 4
FAN3 FAN2
Terminal block No. Fan motor wiring
Yellow
F1
Low static pressure
Blue
F2
Middle static pressure
Orange
F3
High static pressure
* Do not use F4.
NOTE
When the external static pressure is changed, write down the static pressure once change in the wiring diagram of the
indoor unit is made.
17-EN
YEL: Yellow
BLU: Blue
ORG: Orange
FM
F 1 F 2 F 3 F 4
FAN1
Fan tap changing
terminal block
Electrical control box
FM
Control
P.C. board
F F F F
1 2 3 4
3P terminal
FAN1
block
2P terminal
block
FM
F F F F
1 2 3 4
FAN1
External static pressure
Pa (mmAq)
69 (7)
137 (14)
196 (20)
– 9 –
6

Drain piping work

CAUTION
Following the Installation Manual, perform the drain piping work that water is properly drained, and apply a heat
insulation not to cause a dew condensation.
Inappropriate piping work may cause the water leakage in the room and wet of furniture.
REQUIREMENT
• The drain piping flows the natural drainage. Make sure to set the drain piping from the unit with descending slope of
1/50 to 1/100 and do not make up-down or trap in the midway.
• Set the horizontal pulling of the drain pipe to 20 m or less. When drain piping is too long, attach the support bracket
at intervals of 1.5 m to 2 m to avoid the pipe becomes undulant as shown in figure below.
<Example for installation of the main piping (Incl. piping support)>
Descending slop of
1/50 to 1/100
• Be sure to connect the drain pipe to the air conditioner with adhesive to avoid water leakage from the joint portion.
4P terminal
• Condensation may occur on the drain pipes including collective pipes. All drain pipes must be wrapped with heat
block
insulator to prevent dew condensation. Especially a part where drain pipe is connected to the indoor unit must be
firmly insulated with the provided heat insulator.
Pipe material, size and insulator
The following materials for piping work and insulating process are procured locally.
Pipe material
Insulator
Connecting drain pipe
REQUIREMENT
Remarks
• Using adhesive agent for vinyl chloride, connect the hard vinyl chloride pipes certainly so that water does not leak.
• It takes some time to dry and indurate the adhesive agent. (Refer to the manual of adhesive agent.) Do not apply any
extra force on the connecting section until the adhesive agent dried.
Factory default
Drain up
When install the drain up kit of optional accessory, read the Installation Manual supplied to a drain up kit.
1.5 to 2 m As long as possible
Descending slop of
VP-30
1/50 to 1/100
Hard vinyl chloride pipe socket for VP25
Hard vinyl chloride pipe VP25 (Nominal outer diameter Ø32 mm)
Foamed polyethylene foam, thickness: 10 mm or more
Up-down bend
Trap
18-EN