Operating Ranges
Connection Pipe Requirements
Heating Operating Range Outdoor Temperature -22 - 86°F (-30 - 30°C)
Cooling Operating Range Outdoor Temperature -20 - 122°F (-29 - 50°C)
Indoor Operating Range Indoor Temperature 61 - 86°F (16 - 30°C)
NOTICE
The maximum distance of the connection piping in both height and total length is provided in the
table below. Do not install these units in locations that exceed these specifications.
NOTES:
1. The connection pipes should be insulated with proper water-proof insulating material
2. Use type ACR copper piping.
3. Shorter connecting pipe lengths result in greater thermal efficiency, so it is preferable to reduce
connecting pipe lengths where possible.
4. Refer to the oil trap instructions for specific requirements when there is height difference
between the indoor and outdoor unit greater than 20 ft. (6m).
Heat Pump
M4THS2309 M4THS2312 M4THS2318 M4THS2324
M4MHW2309 M4MHW2312 M4MHW2318 M4MHW2324
Refrigerant Charge (oz.) 36 47 56 64
Standard Length ft (m) 25 (7.6)
Additional Refrigerant Charge (oz/ft)
For Piping Beyond Standard Length
0.2 0.5
Outer Diameter
Liquid Pipe in. (mm) Φ 1/4" (6.35)
Gas Pipe in. (mm) 3/8" (9.5) Φ 1/2" (12.7) 5/8" (15.9)
Max Distance
Height ft. (m) 32.8 (10) 65.6 (20)
Length ft. (m) 49.2 (15) 65.6 (20) 98.4 (30)
Minimum Piping Length ft. (m) 10 (3)
Compressor Oil Used FW68DA RB68EP FW68DA
10 88-M4MHW23-1A-EN
Installer's Guide
To Next Page
Loading...
Need help?
General
