Optional Water Sensor; Optional Condensate Pump - Carrier Idrofan 42EP Installation, Operation And Maintenance Instructions

4 - COMPONENTS AND MAINTENANCE

4.11 - Optional water sensor

■ A water temperature sensor can be provided. It has
to be installed on the water circuit as described
below:
- For 2-pipe coil: the sensor shall be installed on a
cooling water pipe (for change-over function). The
sensor is installed on a part where the water flow
is continuous.
- For 4-pipe coil: the sensor shall be installed on a
heating water pipe (for cold-draft function that
prevents the operation of the unit when the heating
network is off).
NOTE: In case of unit with an electrical box (for
Carrier Thermostats), a "switch" is provided as an
option instead of the water sensor.

4.12 - Optional condensate pump

Check the sealing of the hydraulic connection of the
condensate pump and condensate recovery.
■ The meaning of the electrical wires is described
below:
- Brown - Blue wires: Electrical supply 230V
50/60Hz
- Black - Grey wires: Alarm contact Normally Closed
(NC) 250V/8A maxi.
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