Lennox LGH094U Unit Information page 65

P-Factory Installed-Hot Gas Reheat (optional)
General
Hot Gas Reheat units provide a dehumidifying mode of op­
eration. These units contain a reheat coil adjacent to and
downstream of the evaporator coil. Reheat coil solenoid
REHEAT
SUPPLY
AIR
STAGE 1
COMPRESSOR
STAGE 2
COMPRESSOR
REHEAT
SUPPLY
AIR
STAGE 1
COMPRESSOR
STAGE 2
COMPRESSOR
REHEAT MODE REFRIGERANT ROUTING
STAGE 2
EVAPORATOR
COIL
STAGE 1
EVAPORATOR
COIL
COIL
REHEAT
VALVE
CHECK
VALVE
COOLING MODE REFRIGERANT ROUTING
STAGE 2
EVAPORATOR
COIL
STAGE 1
EVAPORATOR
COIL
COIL
REHEAT
VALVE
CHECK
VALVE
valve, L14, routes hot discharge gas from the compressor
to the reheat coil. Return air pulled across the evaporator
coil is cooled and dehumidified; the reheat coil adds heat to
supply air. See figure 48 for reheat refrigerant routing and
figure 49 for standard cooling refrigerant routing.
RETURN
AIR
CONDENSER
EXPANSION
VALVE
FIGURE 48
RETURN
AIR
CONDENSER
EXPANSION
VALVE
FIGURE 49
Page 65
OUTDOOR
AIR
TWO
FANS
STAGE 2
CONDENSER
COIL
STAGE 1
CONDENSER
COIL
OUTDOOR
AIR
TWO
FANS
STAGE 2
CONDENSER
COIL
STAGE 1
CONDENSER
COIL