Mitsubishi Heavy Industries SRK25ZD-S1 User Manual

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3
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INVERTER WALL MOUNTED TYPE ROOM AIR-CONDITIONER
( Split system, air to air heat pump type )
SRK20ZD-S1, SRK25ZD-S1, SRK35ZD-S1, SRK50ZD-S1
SRK63ZE-S1, SRK71ZE-S1
WALL MOUNTED TYPE ROOM AIR-CONDITIONER
( Split system, air to air heat pump type )
SRK20HD-S1, SRK28HD-S1, SRK40HD-S1
SRK20HC-S2, SRK28HC-S2, SRK40HC-S2
SRK50HE-S1, SRK56HE-S1
SRK63HE-S1, SRK71HE-S1
WALL MOUNTED TYPE ROOM AIR-CONDITIONER
( Split system, air cooled cooling only type )
SRK20CD-S1, SRK28CD-S1, SRK40CD-S1
SRK20CC-S1, SRK28CC-S1, SRK40CC-S1
SRK50CE-S1, SRK56CE-S1
SRK63CE-S1, SRK71CE-S1
Manual No. ’06
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SRK-T
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050
updated September 29, 2009

Mitsubishi Heavy Industries SRK25ZD-S1 Specifications

General

Cooling Capacity	2.5 kW
Heating Capacity	3.2 kW
Power Supply	220-240 V, 50 Hz
Energy Efficiency Class Cooling	A++
Energy Efficiency Class Heating	A+
Refrigerant	R32
Outdoor Unit Dimensions (W x H x D)	780 x 540 x 290 mm
Noise Level (Indoor)	21 dB
Noise Level (Outdoor)	49 dB(A)

Summary

1.1.1 GENERAL INFORMATION

(1) Specific features

Details about SRK series air conditioners, including inverter, fuzzy control, remote control flap, and self-diagnosis.

(2) How to read the model name

Explanation of how to interpret the model designation for SRK series air conditioners, including series, type, and capacity.

1.1.2 SELECTION DATA

(1) Specifications

Technical specifications for SRK20ZD-S1 (Indoor) and SRC20ZD-S1 (Outdoor) units, detailing capacity, power, and dimensions.

(2) Range of usage & limitations

Defines the operating limits for indoor/outdoor air temperature and refrigerant line length for SRK20ZD-S1, 35ZD-S1, and 50ZD-S1 models.

(3) Exterior dimensions

Provides detailed dimensional drawings of the indoor unit for SRK20ZD-S1, 25ZD-S1, 35ZD-S1, and 50ZD-S1.

1.1.3 ELECTRICAL DATA

(1) Electrical wiring

Electrical wiring diagram for SRK20ZD-S1, 25ZD-S1, and 35ZD-S1 models, showing component connections.

1.1.4 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER

(1) Operation control function by remote control switch

Details on using remote control buttons for operation modes, fan speed, flap control, and timers.

(2) Unit ON/OFF button

Instructions on using the unit's ON/OFF button for basic operation when the remote controller is unavailable.

(3) Power blackout auto restart function

Explanation of the auto-restart function that resumes operations after a power interruption.

1.1.5 APPLICATION DATA

(1) Selection of location for installation

Guidelines for selecting proper installation locations for indoor and outdoor units to ensure optimal performance and servicing.

(2) Installation of indoor unit

Detailed steps for installing the indoor unit, including mounting board, drilling, and sleeve installation.

(3) Installation of outdoor unit

Instructions for installing the outdoor unit, ensuring stability, proper space, and secure mounting.

(4) Refrigerant piping

Guidance on preparing and connecting refrigerant piping, including material selection and flare nut dimensions.

(5) Test run

Procedure for conducting a trial run to check for gas leaks and ensure proper operation after installation.

(6) Precautions for wireless remote controller installation and operation

Guidelines for the correct installation and operation distances of the wireless remote controller.

1.1.6 MAINTENANCE DATA

(1) Troubleshooting procedures for electrical equipment

Diagnostic flowcharts for troubleshooting electrical issues when the unit does not run at all or malfunctions.

(2) Servicing

Procedures for evacuation, refrigerant charging, and refrigerant recovery for R410A systems.

1.1.7 REFRIGERANT PIPING INSTALLATION/SERVICING MANUAL FOR AIR CONDITIONERS USING R410A

(1) Outline

Overview of R410A refrigerant, its properties, and safety precautions during installation and servicing.

(2) Refrigerant piping installation

Details on the correct selection and processing of piping materials and joints for R410A systems.