Refrigerant Flow Diagram; Electrical Wiring Diagram - Example: Matched Ahu+Odu - Friedrich Breeze Series Service Manual

Diagram of refrigerant cycle & Wiring

Refrigerant flow diagram

Refrigerant Flow Diagram

Electrical wiring diagram - Example: Matched AHU+ODU

Electrical wiring diagram - Example: Matched AHU+ODU
W1
B
C
R
Y
G
NOTE: WHEN OPTIONAL ELECTRIC
HEATER KIT IS INSTALLED, CONNECT
POWER TO THE INDOOR UNIT
TO THE LOAD SIDE OF THE ELECTRIC
HEATER KIT POWER SUPPLY
L1 ELECTRIC
L1
L2 HEATER
L2
G KIT
G
Note:
The SI (signal wire) between indoor and outdoor units is not necessary when the outdoor unit is connected to the indoor unit of a different brand.
In a matched system the SI (signal) connection enables energy savings by matching low load demands.
The SI (signal) wire between the indoor and outdoor units is not applicable when the outdoor unit is connected to an indoor unit of a
different brand. In a matched system, SI (signal) enables more energy-savings when the outdoor unit is connected to an indoor unit
of the same brand. SI (signal) is not required in non-matched configurations.
46
INSTALLATION
Figure 303
C W1 SI
G R
L1 L2
Indoor Unit
POWER SUPPLY
Figure 304
C B Y W
G
Outdoor Unit
TABLE FOR THERMOSTAT TERMINAL CALLOUTS:
R - 24V
C - COMMON
G - FAN
Y - CALL FOR COOLING
B - REVERSING VALVE ENGAGE FOR HEATING
W1 - CALL FOR AUX/DEFROST HEATING.
SI - SIGNAL BETWEEN MATCHED AHU/ODU
NOTE: SET THERMOSTAT TO "B" ON SETUP TO ENGAGE
REVERSING VALVE FOR HEATING
Power
SI L1 L2 G
Terminal
Panel
POWER SUPPLY