Cooling System - Lennox Energence LGH Manual

FEATU RES AN D B ENEF ITS
HEATING SYSTEM (continued)
Options/Accessories
Factory Installed
Stainless Steel Heat Exchanger
• Required if mixed air temperature is below 7°C
Factory or Field Installed
Bottom Gas Piping Kit
• Allows bottom gas entry
• Factory installed kit is furnished with the unit for field
installation
Field Installed
Combustion Air Intake Extensions
• Recommended for use with existing flue extension kits
in areas where high snow areas can block intake air
• Order two kits
LPG/Propane Kits
• Conversion kit to field change over units from Natural
Gas to LPG/Propane
• Order two kits
Vertical Vent Extension Kit
• Use to exhaust flue gases vertically above unit
• Required when unit vent is too close to fresh air intakes
per building codes
• Also prevents ice formation on intake louvers
• Kit contains vent transition, vent tee, drain cap and
installation hardware
• Order two kits
NOTE - Straight vent pipes (102 mm B-Vent) and caps are
not furnished and must be field supplied. Refer to
kit instructions for additional information.
Energence Packaged Gas / Electric 45.7 to 88 kW - 50 Hz / Page 4
®

COOLING SYSTEM

• Designed to maximize sensible and latent cooling
performance at design conditions
• System can operate from -17°C to 51°C without any
additional controls
R-410A Refrigerant
• Non-chlorine based
• Ozone-friendly
C C
Scroll Compressors
• Scroll compressors on all models for high performance,
reliability and quiet operation
• Resiliently mounted on rubber grommets for quiet
operation
Compressor Crankcase Heaters
• Protects against refrigerant migration that can occur
during low ambient operation
D D
Thermal Expansion Valves
• Ensures optimal performance throughout the application
range
• Removable element head
E E
Filter/Driers
• High capacity filter/drier protects the system from dirt
and moisture
High Pressure Switches
• Protects the system from high pressure conditions
Low Pressure Switches
• Protects the compressors from low pressure conditions
such as low refrigerant charge, or low/no airflow
Freezestats
• Protects the evaporator coil from damaging ice build-
up due to conditions such as low/no airflow, or low
refrigerant charge