Controls "A" - "B" - "C" - "D - Carrier 42GW 200 Manual De Instalación

Electrical connections
Table X
fig. 36 fig. 38 fig. 39 fig.39e fig.39f fig.39g fig.39h fig.40
Kind of unit
42GW__0____ _ x
42GW_ _0 K____ x
42GW_ _9 K____
42GW_ _9_____
42GW_ _9K__C_
42GW__ 0K__C _
42GW__ 0___C_
42GW__ 0___D_
42GW__ 0J____

Controls "A" - "B" - "C" - "D"

The units can be equipped, on demand, with one of the four available
types of controls.
Controls are of the electronic type with microprocessor control.
The controls can be wall-mounted.
Each control can manage one single unit; using A and B controls and an
optional auxiliary board several units can be managed by one control,
see accessories.
All controls must be opened and installed only by qualified personnel as
Control characteristics
ON/OFF
Three fan speeds manually selected
Fan speed automatically selected
Temperature selector
Blue LED – cooling operation
Red LED – heating operation
Yellow LED – automatic seasonal changeover
Yellow LED – energy saving
Manual seasonal changeover button
Central seasonal changeover
Automatic seasonal changeover button
Energy saving button
Return air temperature sensor
Temperature sensor located on the board
Cooling / Heating valve outlet (2-pipe)
Heating valve outlet (4-pipe)
Cooling valve outlet (4-pipe)
Electric heater outlet
Frost-protection
External contact
Water minimum temperature sensor
Air sampling (periodic fan starting)
Continuous ventilation
Temperature block
Autotest
Supplementary heating
34 42 GW
x
x
x
x
x
x
x
Type
IMPORTANT:
To power the unit, use cables with minimum section as according
to table II.
After all connections are made, fasten the cable using the special
tear protections (ref. 19)
Close the control box panel with the protecting cover and tighten
the screw(s) which were previously removed.
Units with electric heaters
The electric heaters are activated by the CARRIER type "B" control. The
unit is equipped with two safety thermostats: one automatic reset
thermostat and one manual reset thermostat which can be re-activated,
fig. 32 (ref. A) to protect the unit against overtemperature caused by
dirty filters or clogged air flow.
The manual thermostat must be reset by skilled personnel only after the
cause for which the intervention was required has been removed.
The use of hot water and electric heaters is allowed only if the
"Booster Heating" option is active (control B + 42N9084 kit).,
they contain electrical and electronic components, connected to 230V
power supply.
WARNING:
Disconnect the power supply before opening the control cover
All inputs (external contact, seasonal changeover etc.) must be
electrically insulated consistent with 230V requirements.
A C B D