Midea 09 Manuale utente

A quick reference guide for Midea High

Wall split systems installations

Pages

System Data (pipe lengths/gas charges etc) 3-4

Easy Wiring Guides 5-8

Wifi and KJR29B installation 9-13

Wifi Set up 14-15

AG Series Multi function board 16-21

Commissioning 22-25

Common Installation Faults 26-28

Pipe sizes/Gas charges

And cable sizes 4

Page

Pipe and Cable Sizes/Charging

Piping Information

Model: 09 12 18 24

Liquid Line Inch 1/4 1/4 1/4 3/8

Gas Line Inch 3/8 3/8 1/2 5/8

Drain Line Φ mm 16 16 16 16

Max Length M 25 25 30 50

Max Height M 10 10 20 25

Electrical Wiring Information

Model: 09 12 18 24

Mains Outdoor 3x1.5mm² 3x2.5mm²

Interconnecting/Indoor Power 5x1.5mm² 5x2.5mm²

Power Supply Information

Model: 09 12 18 24

Outdoor Ph/A 1/16 1/16 1/16 1/20

Indoor Powered from Outdoor Unit

Refrigerant Charging Information

Model: 09 12 18 24

Pre – Charge Kg 0.5 0.5 1.0 1.6

Charged to M 5 5 5 5

Additional g/m 12 12 12 24

Refrigerant Type R32

PLEASE NOTE – when using the 4 core wiring method the interconnecting cable for size 24 systems can be

downsized to 1.5mm

5 core method 5

4 core method 6

4 core method explanation 7

Page

High Wall Easy Wiring Guide

•Interconnecting power supply must be

locally isolated with a 5amp switch fuse

spur to protect the indoor PCB

•‘W’ and ‘S’ must not be switched (crimp

straight through)

•W is a switched live and powers the

condenser using the energy efficiency

relay

L,N,E

W,L,N,E,S W,L,N,E,S

High Wall Easy Wiring Guide – 4 core method

•Interconnecting power supply must be

locally isolated with a 5amp switch fuse

spur to protect the indoor PCB

•‘S’ must not be switched (crimp straight

through)

•Move the spade connection of W at the

condensing unit to the spare way on

1(L) (see next page for explanation)

L,N,E

L,N,E,S L,N,E,S

Wiring Information – 4 Core Interconnecting

For instances where a 4 core interconnecting is to

be used we can bypass the 1W standby relay and

power the condenser directly from the mains

supply

This reverts the system back to 5W standy power

usage, the same as all other manufacturers

To achieve this, when the unit is powered down,

we need to move the brown spade connection

from the W terminal and replace it onto the spare

connection on the 1(L) terminal

You then wire with a 4 core cable and miss W at

both units

Installation Overview 10-11

KJR29B single unit 12

KJR29B multiple units 13

Page

Wifi & Controller Installation

The connections for both the wifi adapter and a

hard wired controller are on the display board

To access it, lift up the fascia and remove the

screw that is holding it in place

Ease the display board from the fascia holdings

and it will hang from the connection made to the

indoor pcb

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