Toshiba RAV-SM2802DT-E Drain Piping Work, 90, nWire connection change of fan motor, Requirement

Concealed Duct High Static Pressure Installation Manual

nWire 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 137Pa (14mmAq)] as factory default.

Low static pressure (F1)

FM

FM

FM

YEL : Yellow

BLU : Blue

Fan motor

YEL

BLU

ORG

Fan motor

YEL

BLU

ORG

Fan motor

YEL

BLU

ORG

ORG : Orange

F1 F2 F3 F4

F1 F2 F3 F4

F1 F2 F3 F4

ORG

FAN3

ORG

FAN2

ORG

FAN1

Standard (Middle) static pressure (F2)

Fan tap changing terminal block

Concealed Duct High Static Pressure Installation Manual

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 20m or less. When drain piping is too long, attach the support bracket at intervals of 1.5m to 2m to avoid the pipe becomes undulant as shown in figure below.

<Example for installation of the main piping (Incl. piping support)>

1.5 to 2 m As long as possible

– 90 –

FM

Fan motor

YEL	BLU	ORG	FM
			Fan motor

F1 F2 F3 F4

ORG
	FAN3

YEL	BLU	ORG	FM
			Fan motor

F1 F2 F3 F4

ORG
	FAN2

YEL BLU ORG

F1 F2 F3 F4

ORG
	FAN1

Electrical control box

Control

P.C. board

4P terminal block

3P terminal block

2P terminal block

Up-down bend

Descending slop of	Descending slop of	VP-30	Trap
1/50 to 1/100	1/50 to 1/100

High static pressure (F3)

FM	YEL	BLU	ORG	FM	YEL BLU	ORG	FM	YEL	BLU	ORG
Fan motor				Fan motor			Fan motor
	F1 F2 F3 F4				F1 F2 F3 F4			F1 F2 F3 F4
		ORG	FAN3		ORG	FAN2			ORG	FAN1
Terminal block No.					Fan motor wiring			External static pressure Pa (mmAq)			Remarks
	F1				Yellow					69 (7)
				Low static pressure
	F2				Blue					137 (14)	Factory default
				Middle static pressure
	F3				Orange					196 (20)
				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.

•Be sure to connect the drain pipe to the air conditioner with adhesive to avoid water leakage from the joint portion.

•Condensation may occur on the drain pipes including collective pipes.

All drain pipes must be wrapped with heat 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.

– 17 – – 18 –