Carrier B Manuel D'installation page 4

Type B Electronic Control
Assembly
Wall-mounted control
sunlight or in not well ventilated areas.
unit from the control (Fig. 2). Secure the unit on the wall and
mark the drill holes.
Avoid drilling with the plastic unit already placed on wall.
electrical connections between this and the electric control box
unit refer to the diagram shown on the unit.
All electric connection cables should be at least 1,5 mm.
the corresponding housing on the unit.
previously removed (Fig. 2).
Control
CONTROL TYPE "B"
Fig. 5
Blue LED - cooling operation
MODE button
Green LED - energy saving operation
Temperature knob
Yellow LED - fan automatic speed selector
Yellow LED - automatic heating/cooling operation
Type "B" control is used in 4-pipe systems and 2-pipe systems with
electric heater.
GB - 2
IMPORTANT:
placed into a proper plastic conduit.
components to avoid damaging them.
before closing the control.
Fig. 2
Screw
Screw anchor
.
Fig. 3
Functions
Control "B" have a knob to select the temperature, with a range
from 10°C to 30°C, and room temperature is maintained at the
selected value.
Fan operation
Use the speed selection button of the fan to select the manual or
automatic operating mode of the fan.
In manual mode, it is possible to select three fan speeds (low/medium/
high) according to the need, or the economy mode.
In the auto mode fan speed is regulated by a microprocessor in the
control in relation to the temperature chosen.
During installation, it is possible to select continuous fan operation
via the switch located on the electronic board (see section dip-
In heating mode, the fan operation is delayed by approximately
one minute to allow the residual heat on the heat exchanger coil or
the electric heaters (if any) to be released.
Frost - protection
This function keeps the temperature from dropping below 7°C in rooms
not used for long periods of time. When this temperature is reached,
the control activates the valve and puts the fan on high speed.
The frost protection function can be activated through the
enabled, this function activates even when the control is in the OFF
position.
Fig. 4