Charging
Charging
■Each outdoor unit is factory charged (nameplate charge) for the evaporator as well as a 7.5m(25ft) line set for each indoor line.
Any time total line set is used either shorter or longer then the nominal 22.5m(75ft: for
■Whether the line set is made shorter or longer you must adjust the charge based on how many ft of tubing are either added or removed based on 20g(0.22oz) of
| Max total length | Max length of | Min length of | Max Elevation | Max elevation | Additional | |
| between each indoor | ||||||
Capacity (Btu/h) | of all pipes | between indoor | |||||
each pipe (A/B) | each pipe (A/B) | unit and outdoor unit | Refrigerant | ||||
| (A+B) |
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| (h1) | units (h2) |
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24k | 30m(100ft) | 15m(50ft) | 3m(10ft) | 7.5m(25ft) | 7.5m(25ft) | 20g/m(0.22oz/ft) | |
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Example: A 80ft line set is used for dual - zone 5 additional ft X 0.22 ounces per foot= add 1.1 ounces of
Important:
If you are ever uncertain of the unit charge, reclaim, evacuate and weigh in the correct charge using the unit nameplate charge adjusting for line sets longer or shorter than 7.5m(25ft) for each indoor unit. Unit is critically charged.
Service Manual 33