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OPTIONS AND ACCESSORIES (cont)
Roof Curbs (Horizontal and Vertical) permit installation and
securing of ductwork to curb prior to mounting unit on the curb.
Both 14-in. and 24-in. roof curbs are available as field-installed
accessories.
EconoMi$er IV is available as a factory-installed option in
vertical supply/return configuration only for unit sizes 036-151.
Vertical or horizontal configuration is available for unit sizes
155-300. (The EconoMi$er IV is available as a field-installed
accessory for horizontal and/or vertical supply return configura-
tions.) The EconoMi$er IV is provided with an industry stan-
dard, stand-alone, solid-state controller that is easy to configure
and troubleshoot. The EconoMi$er IV is compatible with non-
DDC applications. The EconoMi$er IV is equipped with a
barometric relief damper capable of relieving up to 100% return
air (for unit sizes 036-151 only). Dry bulb outdoor-air tempera-
ture sensor is provided as standard. The return air sensor,
indoor enthalpy sensor, and outdoor enthalpy sensor are pro-
vided as field-installed accessories to provide enthalpy control,
differential enthalpy control, and differential dry bulb tempera-
ture control.
EconoMi$er IV on 579F and 581A units is used for both vertical
and horizontal return air configurations.
EconoMi$er2 is available as a blanket quote control or as a
field-installed accessory for horizontal and/or vertical supply
return configurations. The EconoMi$er2 is provided without a
controller for use with field-installed third-party controls. The
EconoMi$er2 is equipped with a barometric relief damper capa-
ble of relieving up to 100% return air. Dry bulb outdoor-air tem-
perature sensor is provided as standard. The enthalpy,
differential temperature (adjustable), and differential enthalpy
control are provided as field-installed accessories. The
EconoMi$er2 is capable of control from a 4 to 20 mA signal
through optional 4 to 20 mA design without microprocessor
control (required for third party control interface).
Manual Outdoor-Air Damper can be preset to admit up to 50%
outdoor air for year round ventilation and is available as a field-
installed accessory.
Two-Position Damper package is available as an accessory.
Both 25% or 100% outdoor air dampers are available.
Head Pressure Control (Motormaster) accessory package
maintains condensing temperature between 90 F and 110 F at
outdoor ambient temperatures down to –20 F by condenser-fan
speed modulation or condenser-fan cycling and wind baffles.
Unit-Mounted, Non-Fused Disconnect Switch provides unit
power shutoff. The switch is accessible from outside the unit,
provides power off lockout capability and is available as a
factory-installed option.
Convenience Outlet is factory-installed and internally mounted
with easily accessible 115-v female receptacle.
Compressor Cycle Delay (Time Guard II) accessory prevents
unit from restarting for minimum of 5 minutes after shutdown.
Thru-The-Bottom Utility Connectors permit electrical con-
nections to be brought to the unit through the basepan.
Connectors are available as field-installed accessories.
Fan/Filter Status Switch accessory provides status of indoor
(evaporator) fan (ON/OFF) or filter (CLEAN/DIRTY).
Power Exhaust accessory will provide system exhaust of up to
100% of return air (vertical only). The power exhaust is a field-
installed accessory (separate vertical and horizontal design).
Ultraviolet Germicidal Lamps eliminate odor causing mold
and fungus that may develop in the wet area of the evaporator
section of the unit. The high output, low temperature germicidal
lamps are field installed in the evaporator section of the unit,
aimed at the evaporator coil and condensate pan.
Hinged Panel Option provides hinged access panels for the fil-
ter, compressor, evaporator fan, and control box areas. Filter
hinged panels permit tool-less entry for changing filters. Each
hinged panel is permanently attached to the rooftop unit.
Hinged panels are a factory-installed option.