3MXL24RMVJUA Installation Manual
Table Of Contents
- Safety Considerations
- Accessories
- Precautions for Selecting a Location
- Precautions on Installation
- Outdoor Unit Installation Diagram
- Connections (connection port)
- How to Use Reducers
- Installation Space Requirements
- Selecting a Location for Installation ofthe Indoor Units
- Outdoor Unit Installation
- 1. Installing the outdoor unit
- 2. Drain work
- 3. Refrigerant piping
- 4. Pressure test and evacuating system
- 5. Refilling refrigerant
- 6. Charging with refrigerant
- 7. Refrigerant piping work
- 8. Flaring the pipe end
- Wiring
- Priority Room Setting
- Night Quiet Mode setting•
- COOL/ HEAT mode lock [S15]
- Pump Down Operation
- Trial Operation and Testing
- 1. Wiring error check
- 2. Trial operation and testing
- 3. Test items
6■English
How to Use Reducers
• Use the reducers supplied with the unit as described below.
(1) Connecting a pipe of φ1/2 inch (12.7mm) to a gas pipe connection port for φ5/8 inch (15.9mm) :
(2) Connecting a pipe of φ3/8 inch (9.5mm) to a gas pipe connection port for φ5/8 inch (15.9mm) :
(3) Connecting a pipe of φ3/8 inch (9.5mm) to a gas pipe connection port for φ1/2 inch (12.7mm) :
No.1
φ5/8”
φ1/2”
No.2
φ1/2”
φ3/8”
No.3
φ5/8”
φ1/2”
No.4
φ1/2”
φ3/8”
No.5
φ5/8”
φ3/8”
No.6
φ5/8”
φ3/8”
Gasket (1) Gasket (2) Reduce and gasket
No. 1
No. 3
Flare nut (for φ5/8 inch (15.9mm))
Inter-unit piping
Connection port of outdoor unit
Connection port of outdoor unit
Connection port of outdoor unit
Be sure to attach
the gasket.
No. 5
No. 6
Flare nut (for φ3/8 inch (9.5mm))
Be sure to attach the gasket.
No. 4
No. 2
Flare nut (for φ1/2 inch (12.7mm))
Be sure to attach the gasket.
Flare nut tightening torque
φ3/8 inch (9.5mm)
φ1/2 inch (12.7mm)
φ5/8 inch (15.9mm)
24-1/8 – 29-1/2ft • Ibf (32.7-39.9N • m)
36-1/2 – 44-1/2ft • lbf (49.5-60.3N • m)
45-5/8 – 55-5/8ft • lbf (61.8-75.4N • m)
• When using the reducer packing shown above, be careful not to
overtighten the nut, or the smaller pipe may become damaged.
(Apply about 2/3 to 3/3 the normal torque.)
• Apply a coat of refrigeration oil to the threaded connection port of
theoutdoorunitwherethearenutcomesin.
• Use an appropriate wrench to avoid damaging the connection
threadbyovertighteningthearenut.
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