Condensate Drain Pump - Carrier Atmosphera 42EM Series Manual

8.6 - Condensate drain pump

8.6.1 - Introduction
Atmosphera units can be fitted with condensate drain pumps,
preferably before but if necessary after the unit has been
installed in the false floor or ceiling.
8.6.2 - Operation
The condensate level detector consists of a float, which can
detect three different condensate levels:
• Pump on level: 17 mm ± 2 mm of condensate. When this
level is exceeded the pump will start automatically.
• Pump-off level: 11 mm ± 2 mm of condensate. When the
pump has been operating, it will switch off when the
level falls below this threshold.
Alarm level: 21 mm ± 2 mm of condensate. When this level is
reached a volt-free contact operates which can be connected to
an external alarm. If the alarm threshold is reached or
exceeded, the condensate drain pump keeps running.
The alarm condition applies if the condensate level is above
the alarm threshold.
The alarm condition no longer applies when the level is below
the alarm threshold.
The device includes a volt-free changeover switch with a
capacity of 8 A/250 V (resistive load).
The alarm contact on the drain pump is a "Normally Open" or
"Normally Closed" type, and therefore:
If the condensate level is below the alarm threshold (no alarm
condition), the contact is open if the wiring is NO or closed if
the wiring is NC.
If the condensate level is above the alarm threshold (alarm
condition), the contact is closed if the wiring is NO or open if
the wiring is NC.
8.6.3 - Features of the condensate drain pump
Maximum flow:
Maximum discharge:
Maximum suction:
Power supply:
Power consumption:
10 l/h (0.0027 l/s)
60 kPa
25 kPa
230 V ± 10%/50 Hz/1 ph.
18 VA.
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