Lennox LGH240H


COOLING MODE REFRIGERANT ROUTING
156, 180H, & 210 UNITS
REHEAT
COIL
CIRCUIT 1
CONDENSER
COIL
CIRCUIT 2
CONDENSER
COIL
STAGE 2
EVAPORATOR
COIL
STAGE 1
EVAPORATOR
COIL
1
2
EXPANSION
VALVES
CHECK
VALVE
L14
REHEAT
VALVE
L30
REHEAT
VALVE
3
CHECK
VALVE
Note: Two refrigerant circuits are shown; both
circuits operate when there is a first-stage
thermostat demand (default).
FIGURE 37
4
REHEAT MODE REFRIGERANT ROUTING
240H AND 300S UNITS
REHEAT
COIL
CIRCUIT 1
CONDENSER
COIL
CIRCUIT 2
CONDENSER
COIL
1
2
EXPANSION
VALVES
CHECK
VALVE
L14
REHEAT
VALVE
L30
REHEAT
VALVE
3
CHECK
VALVE
STAGE 1
EVAPORATOR
COIL
STAGE 2
EVAPORATOR
COIL
Note: Two refrigerant circuits are shown; both
circuits operate during reheat.
FIGURE 38