Friedrich MULTI ZONE MR24DY3JMA Product guide

ENGINEERING PRODUCT

DATA BOOK

MULTI ZONE

Wall-mounted

Ceiling cassette

Concealed duct

THE EXPERTS IN ROOM AIR CONDITIONING

960-942-06

MULTI ZONEMULTI ZONE

CONTENTS

Part 1 General information

Part 2 Product data

Part 3 Design and installation

Part 4 Special parts

Part 1 General information

MULTI ZONEMULTI ZONE

Step by step system selection process (reference)

(1) Calculate or obtain the maximum heat load for the area(s) to be air conditioned

(2)

(3)

(4)

(5)

1. Air conditioners should not be installed in areas where corrosive gases, such as acid gas

or alkaline gas, are produced.

2. If the outdoor unit is installed close to the sea shore, direct exposure to the sea breeze

should be avoided and choose an outdoor unit with anti-corrosion treatment.

CAUTION

Selection of BB unit and branch

Selection of the control system

Control wiring method

Description of devices

Electrical wiring

Electrical characteristics

Field wiring

Indoor unit specifications

Outdoor unit specifications

Capacity coefficient factor

Air flow and temperature distributions

MULTI ZONEMULTI ZONE

Part 1 General information

1. Model line up

2. Nomenclature

3. Combination

4. Individual Control System

General information _ 1

Part 1 General information

MULTI ZONEMULTI ZONE

1. Model line up

1.1 Indoor units

Category External

Appearance

Model names

Capacity (kBtu/h Class)

9 12 18

Wall mounted

MW09Y3J MW12Y3J

MW18Y3J

Ceiling

cassette 4-way

MC12Y3JM

MC18Y3JM

Ceiling

concealed

duct

Low

static

pressure

MD09Y3JM

MD12Y3JMA MD18Y3JMA

1. Model line up

2_ General information

Part 1 General information

MULTI ZONEMULTI ZONE

Model Name

MR48DEY3JM

No. of connectable indoor units

(Min. ~ Max.) 2~8

Total capacity index of connectable

indoor units

Power supply

208/230V, 1Ø, 60Hz

External

Appearance

Branch Distribution type

1.2 Outdoor units

Multiple Piping Type

Model Name

MR24DY3JMA MR36TQY3JMA

No. of connectable indoor units

(Min. ~ Max.) 2 ~ 3 2 ~ 4

Total capacity index of connectable

indoor units

36 48

Power supply

208/230V, 1Ø, 60Hz

External

Appearance

General information _ 3

1. Model line up

Part 1 General information

MULTI ZONEMULTI ZONE

BB (Branch Box) unit

Branches

1.3 Accessory for Branch Distribution type Outdoor units

Branch

Type

No. of

BB Units

Accessory

Model Name

Specifications

Gas Liquid

External

Appearance

DYBK

To BB unit Ø19.05 (3/4)

Ø19.05 (3/4)

To ODU

Ø19.05 (3/4)

To BB unit Ø9.52 (3/8)

Ø9.52 (3/8)

To ODU

Ø9.52 (3/8)

No. of connectable indoor units(Min. ~ Max.)

1 ~ 4

Model name D4PBB

Connectable indoor unit capacity kBtu/h 9 ~ 24

External

Appearance

2. Nomenclature

4_ General information

Part 1 General information

MULTI ZONEMULTI ZONE

M R 24 D Y 3 J MA

Installation Type

M, MA : Multi Zone

Marketing Model

Electrical rating

1 : 115V, 1Ø, 60Hz

3 : 230V, 1Ø, 60Hz

Refrigeration Cycle

C : Cool Only

Y : Heat Pump

Application

Empty : Single

U : Universal

D : Multi Zone (Max. 3 Rooms)

TQ : Multi Zone (Max. 4 Rooms)

DE : Multi Zone (Max. 8 Rooms)

Capacity

9 : 9,000 Btu/h, 12 : 12,000 Btu/h,

18 : 18,000 Btu/h, 24 : 24000 Btu/h,

30 : 30,000 Btu/h, 36 : 36,000 Btu/h,

48 : 48,000 Btu/h

Model Type

W : Wall mounted

C : Cassette

D : Concealed Ducted

R : Outdoor component

WH : Wall mounted High SEER

RH : Outdoor high SEER

Series

Mini- split

General information _ 5

Part 1 General information

3. Combination

MULTI ZONEMULTI ZONE

3.1 Selection procedure

Outdoor units selection

In general, an outdoor unit may be selected as follows, though the location of the unit, and usage of the room, etc. should

be considered. The combination of indoor and outdoor units should be determined so that the sum of indoor unit capacity

index is smaller than the max. combination capacity of the outdoor unit. Up to max.8 indoor units can be connected to one

outdoor unit. It is recommended to choose a large capacity outdoor unit if the installation space is large enough.

Indoor units selection

Look up the table on combination of indoor and outdoor units, and determine the appropriate indoor unit capacity which sat-

isfies the given thermal load.

For proper system operation, refer to the following:

1) At least 2 indoor units should be connected to outdoor unit.

2) Total capacity of indoor units connected should be minimum 40% of outdoor unit above mentioned capacity.

3) Calculation method for total capacity index = sum up the capacity index of connected indoor units.

Model name

Heat pump

20,000 32,000 48,000

24,000 36,000 54,000

3 4 8

36 48 65

MR24DY3JMA MR36TQY3JMA MR48DEY3JM

Capacity

(Btu/h)

Connectable

indoor units

Maximum No. of

connectable indoor units

Cooling

Heating

Max. capacity index of

connectable indoor units

Unit Capacity(kBtu/h Class) 9 12 18

Capacity Index 9 12 18

6_ General information

Part 1 General information

MULTI ZONEMULTI ZONE

3. Combination

3.2 Combination of indoor and outdoor unit

The total capacity index of indoor units is the sum of capacity index of each unit and should be within the capacity index of

the outdoor unit.

Note:

1. * For more capacity information, refer to the combination tables.

2. The combination of indoor and outdoor units should be determined so that the sum of indoor unit capacity index is smaller

than the max. combination capacity of the outdoor unit. Refer to the combination table.

3. At least two indoor units should be connected.

9 9,000 O O O

12 12,000 O O O

18 18,000 O O O

12 12,000 O O O

18 18,000 O O O

9 9,000 O O O

12 12,000 O O O

18 18,000 O O O

Indoor units

Capacity*

Model type

Wall mounted

Ceiling cassette

4-way

Ceiling Concealed

Duct-Low static

Index Btu/h Class

Outdoor units

MR24DY3JMA MR36TQY3JMA MR48DEY3JM

348

Maximum No. of connectable indoor units

This manual suits for next models

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