Heating coil, cooling coil, and electric heater
© robatherm 67
Coil connection
Information on flushing, filling, and venting see chapter "Hydraulic set", page 80.
WARNING
Eye injury from refrigerant-filled coils due to pressure
When opening the piping to prepare for brazing of refrigerant-filled coils, nitrogen
escapes at approx. 5-10 bar. This can result in small flying parts and chips that can
cause injury to the eye.
• Wear protective goggles with side protection
When connecting the heating and
cooling water lines (medium supply and
medium return), make sure that the
inlet and outlet connections are not
mixed up (counterflow principle with
water inlet on air outlet side).
A medium return
B medium supply
C air direction
Fig. 123: Coil
Design and execute on-site piping in such a way that external loads on the coil, e.g., due to weight
forces, vibrations, tensions, or thermal expansion, are avoided. If necessary, use compensators.
When tightening the threaded connections provided by the customer on the connection pipe of the
coil, hold them in place, e.g., with a pipe wrench, otherwise the internal pipes will be twisted off and
damaged.
Flange the on-site piping to allow easy removal of coils for scheduled maintenance or replacement.
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