65
Valve and sensor function and operation
Multi Controller
Multi Controller - valve functions
Symbol
Name of valve
Description of function
PMV (A, B, C, D)
Flow rate control valve
This opens to the extent corresponding to the capacity
and performance required of each indoor unit.
SVS (A, B, C, D)
Suction gas valve
Opens when commands from the indoor units require
cooling operation.
SVD (A, B, C, D)
Discharge gas valve
Opens when commands from the indoor units require
heating operation.
SVSS
Pressure reducing
Opens when the number of units in heating operation
solenoid valve
is reduced (heating to shutdown or cooling).
Opens when defrost operation starts.
Opens during oil retrieval control in cooling operation.
SVDD
Pressure increasing
Opens when the number of units in heating operation
solenoid valve
is increased (shutdown or cooling to heating).
Opens while control is performed to prevent liquid
in discharge pipe from being blocked.
SVH
Superheat solenoid valve
Opens when unit in cooling operation is present.
Multi Controller - valve operation
Outdoor operation mode
Indoor operation mode
SVD
SVS
PMV
Shutdown
Shutdown, fan
OFF
OFF
Fully closed
During operation
Shutdown, fan
OFF
ON
Fully closed
Cooling
OFF
ON
Rated opening
Cooling thermo-control (@ setpoint) OFF
OFF
ON
Fully closed
Heating
ON
OFF
Rated opening
Heating thermo-control (@ setpoint) OFF
ON
OFF
Fully closed
Содержание HFC R407C
Страница 1: ...A90 0233 HFC R407C Super Multi System Service Manual Air Conditioner Multi Split Type System ...
Страница 2: ...2 ...
Страница 18: ...18 Wiring diagrams Outdoor unit MAR F105HTM8 PE ...
Страница 19: ...19 Wiring diagrams Outdoor unit ...
Страница 21: ...21 Refrigeration piping schematic diagram Outdoor unit ...
Страница 74: ...74 Exploded view and service parts Outdoor unit ...
Страница 75: ...75 Exploded view and service parts Outdoor unit 12 14 j ...
Страница 80: ...www toshiba aircon co uk MADE IN UK A90 0233 Revised October 2002 ...