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Daikin 3MXS68G3V1B2 User Manual

Daikin 3MXS68G3V1B2
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INSTALLATION
MANUAL
R410A Split Series
Models
3MXS68G3V1B2
4MXS68F3V1B2
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Daikin 3MXS68G3V1B2 Specifications

General IconGeneral
Model3MXS68G3V1B2
Cooling Capacity6.8 kW
Connections (Number of indoor units)3
Power Supply220-240 V
RefrigerantR32

Summary

Safety Precautions

Precautions for Selecting the Location

Indoor/Outdoor Unit Installation Drawings

Installation

Connections (connection port)

Details on connecting indoor units to ports, including a table and notes on reducers.

Precautions on Installation

Outdoor Unit Installation Guideline

Selecting a Location for Installation of the Indoor Units

Refrigerant Piping Work

2. Drain work

Procedures for using the drain plug and considerations for cold areas.

3. Refrigerant piping

Cautions on using flare nuts, applying refrigeration oil, and torque specifications.

4. Purging air and checking gas leakage

Steps for vacuum pumping, checking for leaks using soapy water, and opening valves.

5. Refilling the refrigerant

Instructions on checking refrigerant type and filling from gas or liquid pipes.

6. Charging with refrigerant

Guidelines for additional refrigerant charge based on piping length and filling the refrigerant label.

7. Refrigerant piping work

Cautions on pipe handling, selection of insulation material, and insulation dimensions.

8. Flaring the pipe end

Step-by-step guide for flaring pipe ends, including tool usage and checks.

How to Use Reducers

Pump Down Operation

1. Forced operation

Instructions on using switches (SW2, SW1) to perform forced cooling operation.

Wiring

Connect the inter-unit wires

Connecting indoor and outdoor units with correct terminal numbers and secure tightening.

Ground terminal installation

Method for installing round crimp-style terminals for ground connections.

Priority Room Setting

1-1. Operation mode priority

Describes how the operation mode of the priority room takes precedence.

1-2. Priority during high-power operation

Explains reduced capabilities of other units during high-power operation of the priority room.

1-3. Quiet operation priority

How setting a room to quiet operation affects the outdoor unit.

Night Quiet Mode Setting

About night quiet mode

Function reduces outdoor unit noise at night, potentially saving capacity.

COOL/ HEAT Mode Lock <S15>

Trial Operation and Testing

1. Wiring error check

Procedure for checking and automatically correcting wiring errors using the service monitor.

2. Trial operation and testing

Steps for testing cooling/heating operations and measuring temperature differences.

3. Items to check

Checklist of installation items and their potential consequences if not done correctly.

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