8
ECU 04/2015 rev.3
reset is necessary to prevent harmful short-cycling. To reset switch, turn primary power off, then back
on or turn thermostat system switch off, then back on.
Low Pressure Switch
The low pressure switch is mounted on the compressor suction line. It is designed to open if the refrigerant
pressure drops to 40 PSIG; it resets when the pressure rises to 60 PSIG. The switch protects the unit if
airow through the indoor blower is impeded, if the blower motor fails, or if there is a loss of refrigerant.
LEDs
POST PURGE
WHEEL
DELAY ON MAKE
(COMPRESSOR TIME DELAY)
WHEEL
1.7 Optional Controls & Packages
Protective Coating Packages
Two corrosion protection packages are offered- one for the condenser section (the Coastal Environmental
package) and the other for the entire unit (the Coat-All Package).
The condenser protection package includes:
• Corrosion resistant fasteners
• Sealed or partially sealed condenser fan motor
• Two layer epoxy/urethane applied to all exposed internal copper and metal in the in the condenser
section
• An impregnated polyurethane on the condenser coil
The Coat-all package includes all of the above but also includes an impregnated polyurethane on the
evaporator coil and the two layer epoxy/urethane on all exterior and interior components and sheet metal.
(Note: the internal sheet metal which is insulated and the internal control box are not coated).
Dirty Filter Indicator
A diaphragm type of indicator measures the air pressure on either side of the lter and when the pressure
drops below the set point, a red LED is illuminated. The set point is adjustable.
Protective Coil Coatings
Either the condenser or evaporator coil can be coated. For harsh conditions, e.g., power plants, paper mills
or sites were the unit will be exposed to salt water, the condenser coil should be coated. Note: Cooling
capacity may be reduced by up to 5% on units with coated coils.
Cabinet Color and Material
The air conditioners are available in two standard cabinet colors -the standard grey with beige as an option.
The standard cabinet’s sides, top and front panels are constructed of 16 gauge painted steel. Contact your
ICE representative for color chips, custom colors and 316 stainless steel cabinets.
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