Lennox CBA25UHE Series - Refrigerant Connections and Brazing; Refrigerant Line Set Requirements; Brazing Connections Safety

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WARNING
Danger of explosion!
Can cause equipment damage, injury, or
death.
When using a high pressure gas such as
nitrogen to pressurize a refrigeration or air
conditioning system, use a regulator that can
control the pressure down to 1 or 2 psig (6.9
to 13.8 kPa).
CAUTION
Brazing alloys and ux contain materials which are
hazardous to your health.
Avoid breathing vapors or fumes from brazing operations.
Perform operations only in well ventilated areas.
Wear gloves and protective goggles or face shield to
protect against burns.
Wash hands with soap and water after handling brazing
alloys and ux.
WARNING
When using a high pressure gas such as
nitrogen to pressurize a refrigeration or air
conditioning system, use a regulator that can
control the pressure down to 1 or 2 psig (6.9
to 13.8 kPa).
TABLE 2. CBA25UHE Refrigerant Connections and
Line Set Requirements
Model
Liquid
Line
Vapor
Line
L15 Line Sets
-024
3/8ʺ
(10mm)
3/4ʺ
(19mm)
L15 line set sizes are
dependant on unit
match-up. See Product
Specications (EHB) for
outdoor unit to determine
correct line set sizes
-030
-036
3/8ʺ
(10mm)
3/4ʺ
(19mm)
-042
3/8ʺ
(10mm)
7/8"
(22mm)
NOTE - Some applications may require a eld-provided 7/8ʺ
to 1-1/8ʺ adapter.
NOTE - When installing refrigerant lines longer than 50
feet, see the Lennox Refrigerant Piping Design and Fab-
rication Guidelines, CORP. 9351-L9, or contact Lennox
Technical Support Product Applications for assistance.