Lennox KGC Series Unit Information page 16

B-Cooling Components
All units use independent cooling circuits consisting of
separate compressors, condenser coils and evaporator
coils. See FIGURE 5 and FIGURE 6. Two draw-through-
type condenser fans are used in KGC units. All units are
equipped with belt-drive blowers which draw air across
the evaporator during unit operation.
Cooling may be supplemented by a factory or field
installed economizer. Each evaporator uses a thermostatic
expansion valve as the primary refrigerant device.
KGC WITH OPTIONAL REHEAT
KGC092 - 150 Shown
Evaporator Coil
FIGURE 6
Page 16
KGC150 Evaporators use a thermostatic expansion valve
as primary refrigerant metering device. KGC092/102/120
use thermostatic expansion valve on stage one and
orifices on stage 2. The evaporators are slab-type and are
stacked. Each evaporator is also equipped with enhanced
fins and rifled tubing.
In all units each compressor is protected by S49 and
S50 freezestats and S4 and S7 high pressure switches
(on each evaporator). On 150 units, each compressor is
protected by a crankcase heater.
Reversing
Valve
Reheat Coil
(bottom)