XP17 - 2 to 5 Ton Heat Pump / Page 3
FEATURES
REFRIGERATION SYSTEM
R-410A Refrigerant
Non-chlorine, ozone friendly, R-410A.
Unit is factory pre-charged with
refrigerant. Total system refrigerant
charge is dependant on outdoor unit size, indoor unit
size and refrigerant line length.
Refer to Installation Instructions for
“Indoor Unit Match-
Up and Sub-Cooling Charge Levels”
to determine
correct amount of charge required.
See Specification table.
Outdoor Coil Fan with SilentComfort™ Technology
Specially-designed, SilentComfort fan guard uses
Passive Vortex Suppression to reduce air noise.
Corrosion-resistant PVC (polyvinyl chloride) coated
steel wire.
Specially designed fan blades reduce operating
sound levels. 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 is inherently protected.
Motor totally enclosed for maximum protection from
weather, dust and corrosion.
Fan service access accomplished by removal of fan
guard.
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 insure
leakproof construction.
Entire coil is accessible for cleaning.
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.
Low Pressure Switch
Shuts off unit if suction pressure falls below setting.
Provides loss of charge and freeze-up protection.
Automatic reset.
A
B
C
D
E
Expansion Valve - Outdoor Unit
Designed and sized specifically for use in heat pump
system.
Sensing bulb is located on the suction line between the
coil and the reversing valve thus sensing evaporator out
temperature in the heat cycle.
Factory installed and piped.
Reversing Valve
4-way interchange reversing valve effects a rapid
change in direction of refrigerant flow resulting in quick
changeover from cooling to heating and vice versa.
Valve operates on pressure differential between outdoor
unit and indoor unit of the system. Factory installed.
Hi-Capacity Liquid Line Drier
Factory installed in the liquid line, the drier traps
moisture or dirt that could contaminate the refrigerant
system.
100% molecular-sieve bead type drier.
OPTIONS
Check/Expansion Valve Kits
Must be ordered extra and field installed on certain
evaporator units. See TXV Usage table.
Chatleff style fitting.
Freezestat
Installs on or near the discharge line of the evaporator
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.
Refrigerant Line Kits
Refrigerant lines (suction & liquid) are shipped
refrigeration clean. Lines are cleaned, dried,
pressurized, and sealed at factory.
Suction line fully insulated.
L15 lines are stubbed at both ends.
See Specifications table for selection.
Not available for -060 model and must be field
fabricated.
F
G
H
