Carrier WEATHERMASTER 50HJQ004-016 Product Data page 12

Options and accessories (cont)
Carrier PremierLink™ controls are available as a
factory-installed option or as a field-installed accessory.
The controls can be used to actively monitor and control all
modes of operations.
Roof curbs (horizontal and vertical) permit installa-
tion 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.
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EconoMi$er IV is available as a factory-installed option in
vertical supply/return configuration only for unit sizes 004-
014. Vertical or horizontal configuration is available for
unit size 016. (EconoMi$er IV is available as a field-
installed accessory for horizontal and/or vertical supply
return configurations.) The EconoMi$er IV is provided with
an industry standard, standalone, solid-state controller that
is easy to configure and troubleshoot. The EconoMi$er IV
is compatible with non-DDC applications. EconoMi$er IV
is equipped with a barometric relief damper capable of re-
lieving up to 100% return air. Dry bulb outdoor-air temper-
ature sensor is provided as standard. The return air sensor,
indoor enthalpy sensor, and outdoor enthalpy sensor are
provided as field-installed accessories to provide enthalpy
control, differential enthalpy control, and differential dry
bulb temperature control.
EconoMi$er2 is available as a factory-installed option
in vertical supply/return configuration only. (EconoMi$er2
is available as a field-installed accessory for horizontal and/
or vertical supply return configurations.) The EconoMi$er2
is provided without a controller for use with factory-
installed PremierLink™ controls or field-installed third-par-
ty controls. EconoMi$er2 is equipped with a barometric re-
lief damper capable of relieving up to 100% return air. Dry
bulb outdoor-air temperature sensor is provided as
standard. The enthalpy, differential temperature (adjust-
able), and differential enthalpy control are provided as
field-installed accessories. The EconoMi$er2 is capable of
control from a 4 to 20 mA signal through optional 4 to
20 mA design without microprocessor control (required for
PremierLink or third party control interface).
Manual outdoor-air damper accessory can be preset to
admit up to 50% outdoor air for year round ventilation.
Two-position damper package is available as an
accessory. Both 25% or 100% outdoor air dampers are
available.
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Head pressure control (Motormaster) accessory pack-
age 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.
Electric resistance heaters are UL listed and available
to match heating requirements. Single point kits available
for each heater when required. Heaters are field-installed
accessories.
Unit-mounted, non-fused disconnect switch provides
unit power shutoff. The switch is accessible from outside
the unit and provides power off lockout capability and is
available as factory-installed option.
Convenience outlet is factory-installed and internally
mounted with easily accessible 115-v female receptacle.
Compressor cycle delay (Time Guard II) prevents unit
from restarting for minimum of 5 minutes after shutdown.
Thru-the-bottom utility connectors permit electrical
connections to be brought to the unit through the basepan.
Connectors are a field-installed accessory.
Fan/filter status switch accessory provides status of
indoor (evaporator) fan (ON/ OFF) or filter (CLEAN/
DIRTY).
Energy$Recycler unit recovers energy from building ex-
haust air and pre-conditions ventilation air to allow higher
ventilation requirements and minimizing energy cost.
Energy$Recycler unit is a field-installed accessory.
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 horizon-
tal design).
Ultra-violet 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 tem-
perature germicidal lamps are field installed in the evapora-
tor section of the unit, aimed at the evaporator coil and
condensate pan.
Hinged panel option provides hinged access panels for
the filter, compressor, evaporator fan, and control box
areas. Filter hinged panels permit tool-less entry for chang-
ing filters. Each hinged panel is permanently attached to
the rooftop unit and is a factory-installed option.
Emergency heat control package accessory activates
auxiliary heat when necessary if mechanical heating is
locked out.
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