Carrier 40MBQB12C--3 Hoja de especificaciones descargar pdf (Pagina 22)

WIRELESS REMOTE CONTROL

1. A wireless remote control is supplied for system operation.

2. Each battery- operated wireless remote control may be used

to control more than one unit.

3. The wireless remote control has a range of 25 ft. (7.6 m).

Fig. 15 – Wireless remote control

WIRED REMOTE CONTROL (STANDARD

ON DUCTED UNITS)

1. Optional wired remote controller used for system operation

of all high- wall, cassette and floor console units.

2. Kit includes a wired remote controller and a connecting

cable.

3. Connect with wire terminal between remote controller and

indoor unit.

4. Display in _For_C and temperature increments every 1_F

or every 1_C.

Fig. 16 – Wired remote contr ol

SEQUENCE OF OPERATION

Simultaneous heating and cooling is not allowed. At start- up, the

first indoor unit to call for operation (heating or cooling) will

control from the preset position, the mode of operation for the rest

of the indoor units connected to the same outdoor unit. If the other

units conflict in mode with the first unit an error message will be

displayed on those units.

When a unit is set to COOL, HEAT or DRY mode, the electronic

expansion valve is first initialized (closed) and then is opened to a

preset position.

Superheat heat for each fan coil (the ones that are ener gized) is

monitored and the position of the electronic expansion valve is

adjusted to ensure that each fan coil gets the appropriate amount of

refr i gera nt t o mai nt ain the require d supe rhea t. Aft er the se t point is

sati sfied a nd the fa n coil shut s of f , the e lec t ronic expansion val ve stays

open for a spe cif ied ti me to ens ure tha t sys tem pre ssur es equalize.

When the system is set for COOL, HEAT or DRY mode, the

compressor speed is varied by comparing the indoor air

temperature with the set point and continuously adjusting the

compressor speed (to keep the compressor running as long as

possible) in an effort to maintain the greatest comfort possible.

The indoor fan can be running in MANUAL or AUTO mode.

When the fan is running in AUTO mode, the speed is determined

by comparing the room temperature to the set point.

In COOLING mode, when the set point is satisfied, the fan will

continue running. In HEATING mode, when the set point is

satisfied, the fan speed will be reduced and then will run

continuously until the coil temperature drops to a point cold air is

blown on the occupants in the space, at which time the indoor fan

is de- energized.

When the unit goes through the defrost cycle, the indoor fans are

de- energized and the refrigerant is circulated through all the fan

coils (even if they were off or on standby before the defrost cycle)

to maximize the heat transfer surface area available for defrost

operation.

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