14ACX - 1.5 to 5 Ton Air Conditioner / Page 3
REFRIGERATION SYSTEM
R-410A Refrigerant
Non-chlorine, ozone friendly, R-410A.
Unit pre-charged with refrigerant.
See Specification table.
Outdoor Coil Fan
Direct drive fan moves large air volumes uniformly
through entire condenser coil for high refrigerant cooling
capacity.
Vertical air discharge minimizes operating sounds and
eliminates damage to lawn and shrubs.
Fan motor has sleeve bearings (-018 through -048
and -060 models), ball bearings (-059 model) and is
inherently protected.
Motor totally enclosed for maximum protection from
weather, dust and corrosion.
Rain shield on motor provides additional protection from
moisture.
Louvered steel top fan guard furnished as standard.
Fan service access accomplished by removal of top
panel.
Copper Tube/Enhanced Fin Coil
Lennox designed and fabricated coil.
Ripple-edged aluminum fins.
Copper tube construction.
Lanced fins provide maximum exposure of fin surface to
air stream resulting in excellent heat transfer.
Fin collars grip tubing for maximum contact area.
Flared shoulder tubing connections/silver soldering
construction.
Coil is factory tested under high pressure to ensure
leakproof construction.
Steel louvered panels provide complete coil protection.
Panels can be completely removed for servicing.
High Capacity Liquid Line Drier
Furnished with unit for field installation.
Approved for use with R-410A systems.
Traps any moisture or dirt that could contaminate the
refrigerant system.
High Pressure Switch
Shuts off unit if abnormal operating conditions cause the
discharge pressure to rise above setting.
Protects compressor from excessive condensing
pressure.
Manual reset.
A
B
C
Refrigerant Flow Control
Units applicable to expansion valve systems or RFC
systems when matched with specific indoor coils.
RFCIV:
Accurately meters refrigerant in system.
Refrigerant control
is accomplished
by exact sizing of
refrigerant metering
orifice.
The principle
involves matching
indoor coil with
proper bore size of
orifice in metering
device.
Equalizes pressure shortly after compressor stops, unit
starts unloaded, eliminating need for additional controls.
See RFC Orifice Usage Table on Page 10 for correct
matches.
Optional Accessories
Expansion Valve Kits
Must be ordered extra and field installed on certain
indoor units. See TXV Usage Table on Page 9.
Chatleff-style fittings.
Freezestat
Installs on or near the vapor line of the indoor coil or on
the suction line.
Senses suction line temperature and cycles the compressor
off when suction line temperature falls below it’s setpoint.
Opens at 29°F and closes at 58°F.
Loss of Charge Switch Kit
Helps protect the compressor from damage due low
refrigerant charge conditions.
SPST, normally-closed switch, automatic reset switch
mounted on liquid line.
Refrigerant Line Kits
Refrigerant lines (suction & liquid) are shipped
refrigeration clean. Lines are cleaned, dried,
pressurized and sealed at factory.
Suction line fully insulated.
Lines are stubbed at both ends.
Not available for -059-060 models. Must be field fabricated.
O−RING
RFCIV METERING SYSTEM
RFCIV
ORIFICE
ORIFICE BODY
(On Coil)
SEAL
NUT
SWEAT
CONNECTION
LIQUID
LINE
LIQUID
LINE SCREEN
FEATURES
