Mitsubishi Electric CITY MULTI PEFY-AF1200CFM-E Technical & Service Manual page 18

[ VII Microprocessor Control ]
PEFY-AF1200CFMR-E
The operating mode is only "AUTO" in this system.
If operating mode is set to other than "Auto" , the display on RC is changed to "Auto" in a little
time automatically. The system keeps "Auto" mode constantly.
Reheat
(Condensor)
(D)
Supply air (SA)
Twinning pipe
(CMY-R160-J)
(A) TH24 Thermistor (Inlet air temperature)
(B) HU Humidity sensor (Inlet air humidity)
(C) TH21-1 Thermistor (Outlet air temperature)
(D) TH21-2 Thermistor (Supply air temperature)
1.Thermoregulation function
Outlet air temperature (C) is controlled to reach the target air temperature TDm.
Inlet air temperature (A) and humidity (B) are used for the thermoregulating.
Supply air temperature (D) is controlled to reach the preset temperature by remote controller.
(1)Thermoregulating function
M o d e T y p e
Cooling/ Main
Heating (Cooling)
Reheat
(Heating)
Tset Preset temperature by remote controller
TDm Target temperature by dip switch setting
SW3-6 SW3-8
OFF OFF
OFF ON
ON OFF
ON ON
The factory setting is 55 ° F [12.8 °C]
*1 Temperature set range of remote controller is from 63 ° F to 83 ° F [17 °C to 28 °C].
2.Mode change
"Main" heat-exchanger is operated in cooling only.
"Reheat" heat-exchanger is operated in heating only.
HWE13100
Indoor unit
Main
Fan motor
(Evaporator)
(C)
Twinning pipe
(CMY-R320C-J)
Twinning pipe
(CMY-R160-J)
BC controller
C o n d t i o i n
TH24 < 43°F[6°C] and 5mins. has passed.
TH24 ≥ 50°F[10°C] and 5mins. has passed.
TH21-1 ≥ Tset and 3mins. has passed.
TH21-1 < Tset - 7°F[-21.5°C] and 3mins. has passed. Thermo ON
TDm
50 ° F [10 °C]
55 ° F [12.8 °C]
60 ° F [15.6 °C]
Converted temperature from the preset
temperature by remote controller and
relative humidity of 45%.
(B)
(A)
Inlet air (OA)
Outdoor unit
S a t
Thermo OFF
Thermo ON
Thermo OFF
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