Friedrich MD18Y3JM Manuale utente

Multi Zone Air Conditioner

SVC MANUAL (Exploded View)

CAUTION

Before Servicing the unit, read the safety

precautions in General SVC manual.

Only for authorized service personnel.

MODEL: MD18Y3JM

960-920-07

1. Specification

Indoor unit type

Ceiling Concealed Duct - Low Static

Model

MD18Y3JM

Power Supply

Ø / V / Hz

1/ 208~230/ 60

Capacity(*)

Btu/h class

18,000

Current Running Current

0.25

Fan

Motor Type

BLDC

Fan Type

Sirocco Fan

Motor Output(W) x No. of Unit

19 x 2

Air Flow Rate

(H / M / L)

CMM

15/ 13.5/ 11.5

CFM

530/ 477/ 406

External Static Pressure

mmAq

Capacitor

μF / Vac

Drive

Direct Drive

Coil

Row x Column x FPI

2R x 11C x 21

Dimensions

(W x H x D)

Body

mm(inch)

1,100 x 190 x 575 (43 5/16 x 7 15/32 x 22 21/32)

Decorative Panel

mm(inch)

Net Weight

Body

kg (lbs)

26.5 (58.4)

Decorative Panel

kg (lbs)

Air Filter

Long life filter

Sound Level (H / M / L)

dB(A)+3

34/ 31/ 29

Piping

Connections

Liquid

mm (inch)

6.35 (1/4)

Gas

mm (inch)

12.7 (1/2)

Drain(OD/ID)

mm(inch)

32 / 25(1.26/0.984)

Dehumidification Rate

l/h

Safety Devices

Fuse, thermal protector for fan motor

Temperature Sensor

Thermistor

Refrigerant

R410A

Refrigerant Control

EEV(in Outdoor unit)

Transmission Interunit Cable

No. x AWG

4X18(Including Earth)

Note:

Capacities are based on the following conditions:

Cooling: - Indoor Temperature 26.7˚C(80˚F) DB/19.4˚C(67˚F)

- Outdoor Temperature 35˚C(95˚F) DB/23.9˚C(75˚F)

Heating: - Indoor Temperature 21.1˚C(70˚F) DB/15.6˚C(60˚F) WB

- Outdoor Temperature 8.3˚C(47˚F) DB/6.1˚C(43˚F) WB

Piping Length - Interconnecting Piping Length 7.5m(24.6 ft.)

- Level Difference of Zero

Wiring cable size must comply with the applicable local and national code.

The specification may be subject to change without prior notice for purpose of improvement.

For more Capacity(*),refer to the combination table

Conversion Formula

kW=Btu/hclassX0.0002931

cfm = CMM x 35.3

- 2 -

2. Function Table

Category

Function

MD18Y3JM

Air flow

Air supply outlet

Airflow direction control(left & right)

Airflow direction control(up & down)

Auto swing(left & right)

Auto swing(up & down)

Airflow steps(fan / cool / heat)

3 / 3 / 3

Chaos swing

Chaos wind(auto wind)

Surge cool(Power wind)

Swirl wind

Air purifying

Deodorizing filter

Plasma air purifier

Prefilter(washable / anti-fungus)

Installation

Drain pump

E.S.P. control

Electric heater(operation)

High ceiling operation

Reliability

Hot start

Self-diagnosis

Soft dry operation

Convenience

Auto changeover

Auto cleaning

Auto operation(artificial intelligence)

Auto restart operation

Child lock

Energy-Saving Cooling Mode

Forced operation

Group control

Sleep mode

Timer(on/off)

Timer(weekly)

Two thermistor control

Individual

control

Wide wired remote controller

DWC1

Deluxe wired remote controller

Simple wired remote controller

Simple wired remote controller(for hotel use)

Wireless remote controller(simple)

Wireless LCD remote control

Wireless LCD remote control(Ez)

CAC network

function

General central controller (Non LGAP)

Dry contact

Central control(LGAP)

PDI(power distribution indicator)

PI 485

Special

function kit

CTIE

Zone control

Others

Thermistor

O : Applied X : Not applied – : No relation

Option : Model name & price are different according to options, and assembled in factory with main unit.

Accessory : Installed at field, ordered and purchased separately by the corresponding model name, supplied with separate

package.

- 3 -

3. Piping Diagrams

Heating

Heatexchanger

Gas pipe connection port

(flareconnection)

Cooling

Th3

Th1

Sirocco Fan

Th2

Liquid pipe connection port

(flareconnection)

LOC.

Description

PCB Connector

Th1

Thermistor for suction air temperature

CN_ROOM

Th2

Thermistor for evaporator inlet temperature

CN_PIPE/IN

Th3

Thermistor for evaporator outlet temperature

CN_PIPE/OUT

- 4 -

4. Wiring Diagrams

CN_REMO CN_PIPE/IN CN_POWER

CN_PIPE/OUT

CN_ROOM

CN_D/PUMP

CN_CC

CN_DISPLAY

CN_OPTION

CN_FLOAT CN_MOTOR1

CN_MOTOR2

- 5 -

5. Exploded View

W4811B

W3110

263230B

159830

263230C

336600B

130911

359012A

346810B

349610

147901

249951

268711C

263230A

336600A

W6640

359012B

268711E

TEMP

FAN

SPEED

OPER

MODE

267110

354210

352118A

W51620

330871

352118B

158591

352150

437213

137211

- 6 -

Model: MD18Y3JM

Loc No.

Description

Friedrich Part #

147901

Barrier,Indoor

67600403

W4811B

Bracket Assembly

67600703

349610

Bracket Assembly,Motor(Indoor)

67600708

130911

Cabinet Assembly,Indoor

67600809

W3110

Case

67600925

249951

Case Assembly,Control(Indoor)

67600904

W6640

Connector,Terminal Block

67601407

354210

Evaporator Assembly,First

67602010

359012A

Fan Assembly,Blower

67602103

359012B

Fan Assembly,Blower

67602105

159830

Filter Assembly,Air Cleaner

67602201

352150

Hose Assembly,Drain

67602801

336600A

Housing,Wrapper

67602903

336600B

Housing,Wrapper

67602904

346810B

Motor Assembly,DC,Indoor

67603310

346810B

Motor,DC

67603331

330871

Pan Assembly,Drain

67603703

137211

Panel Assembly,Front(Indoor)

67603801

437213

Panel Assembly,Rear(Indoor)

67603816

268711C

PCB Assembly,Main

67603908

268711E

PCB Assembly,Option

67603918

158591

Pump Assembly,Water

67604100

267110

Remote Controller Assembly

67604300

W51620

Socket,Flare

67604401

263230C

Thermistor Assembly,NTC

67604805

263230A

Thermistor Assembly,NTC

67604809

263230B

Thermistor Assembly,NTC

67604822

263230A

Thermistor,NTC

67604825

263230C

Thermistor,NTC

67604827

352118A

Tube Assembly,Menifold(Indoor)

67606002

352118B

Tube Assembly,Menifold(Indoor)

67606006

FriedrichAirConditioningCo. I10001ReunionPlace,Suite500 ISanAntonio,TX78216 I877.599.5665

www.friedrich.com

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