Bryant 579F - Manual (Page 4)

FIELD-INSTALLED ACCESSORY DESCRIPTION AND USAGE (cont)
LP (Liquid Propane) Kit (036-150) — Kit consists of gas ori-
fices to convert the unit for use with LP gas. No gas valve modi-
fication is required.
SUGGESTED USE:
• When natural gas cannot be obtained for 036-150 units.
Thermostats and Subbases — Provide staged cooling and
heating, automatic (or manual) changeover, fan control, and in-
dicator light.
SUGGESTED USE:
• To control unit operations.
Solid-State Enthalpy Control (036-150 units) — Package
consists of a solid-state control and sensor which is capable of
sensing outdoor-air heat content (temperature and humidity)
and controlling economizer cut-in point to have minimum heat
content air passing over the evaporator coil. The solid-state en-
thalpy control replaces the standard dry-bulb thermostat in the
economizer.
SUGGESTED USE:
• To enhance economizer operation for additional energy
savings.
Enthalpy Control Sensor — Package consists of a solid-state
sensor to be used in conjunction with the solid-state enthalpy
control (036-150 units) or paired with a second enthalpy sensor
(180-300 units) for differential enthalpy control. This sensor is
mounted on the economizer assembly so that it can sense
building return-air temperature. The 2 sensors will determine
which combination of outdoor and return air will provide the
greatest energy savings.
SUGGESTED USE:
• To enhance economizer operation for maximum energy
savings.
NOTE: On 180-300 units, a single sensor may be used for
single-sensor, outdoor-air, enthalpy control if desired.
Time Guard ா II Device — Package consists of a control to be
field wired into the unit controls, and provides a 5-minute delay
in compressor operation between cooling cycles.
SUGGESTED USE:
• Prevents compressor short cycling when rapid compressor
cycles may be a problem.
Controls Upgrade Kit (036-150) — See description listed un-
der Factory-Installed Options Description and Usage section on
page 3.
Head Pressure Control Device — Kit consists of an outdoor-
air thermostat that permits adequate head pressure control dur-
ing cooling operation at low outdoor-ambient temperatures.
Refer to Trade Prices for more details.
NOTE: The head pressure control device is not necessary for
036-150 units to allow cooling operation down to 25 F.
SUGGESTED USE:
• When cooling at low-ambient outdoor temperatures is
desired.
Low-Ambient Kit — Kit consists of a solid-state control and
condenser coil temperature sensor to modulate the condenser-
fan motors in order to maintain condenser-coil head pressure
for proper cooling operation. Refer to Trade Prices or contact
your local representative for more details.
SUGGESTED USE:
• Whenever cooling is required at low outdoor ambient tem-
peratures (as low as –20 F).
NO
x
Reduction Kit (036-150) — Consists of baffles to be in-
serted in the heat exchanger tubes to reduce the level of nitrous
oxide emissions to 40 nanograms per joule.
SUGGESTED USE:
• To meet local NO
x
emission standards for 036-150 units.
Flue Hood Protector (036-150) — Consists of a sheet metal
shield to go over the gas flue exhaust.
SUGGESTED USE:
• If additional protection from hot flue hood is required — for ex-
ample, if 036-150 unit is slab mounted near a driveway.
Condenser Coil Grille (036-150) — The grille protects the con-
denser coil from damage and requires no additional clearance.
SUGGESTED USE:
• When 036-150 unit is located in high traffic areas or could be
subject to damage.
• As an alternate location for the field-installed disconnect
switch (036-072 only).
Barometric Relief Package (180-300) — This package is use-
ful when it is necessary to remove excess pressure from the
conditioned space.
NOTE: Optional economizer is required.
SUGGESTED USE:
• When the job requires the ability to relieve internal building
pressure on 180-300 units.
Power Exhaust Package (180-300) — This package is useful
when it is necessary to remove excess pressure from the con-
ditioned space.
NOTE: Optional economizer is required.
SUGGESTED USE:
• When the job requires the ability to relieve internal building
pressure and pressure losses through the return-air ductwork
are greater than 0.20 in. wg on 180-300 units.
• When the job requires the ability to move large quantities of
air to relieve pressure in the conditioned space on 180-300
units.
Winter Start Time Delay Relay (180-300) — Used in conjunc-
tion with accessory low-ambient kit or head pressure control de-
vice, permits operation in cooling at lower outdoor ambient
temperatures. See Trade Prices for more details.
SUGGESTED USE:
• When job requires the ability to operate in cooling at low
outdoor-ambient temperatures.
Thru-The-Bottom Power Connection (036-150) — Used to
make power and control connections through the bottom of the
unit.
SUGGESTED USE:
• When utility connections need to be made through the bottom
of the unit.
Hail Guard (036-150) — This accessory protects the coils
against damage from hail and other airborne debris.
SUGGESTED USE:
• Applications where wind may cause damage to the unit coils.
Condenser Coil Salt Spray Protector (036-150) — The con-
denser coil salt spray protector prevents coil damage due to
salt-spray induced corrosion in coastal areas. The protector uti-
lizes a replaceable and washable filter.
SUGGESTED USE:
• Coastal area applications.
Fan/Filter Status Switch — The switch provides the status of
the evaporator fan (on or off) or filter (clean or dirty). The status
is displayed by an indicator light at the thermostat.
SUGGESTED USE:
• To assist in servicing the unit.
Flue Discharge Deflector (036-150) — This accessory directs
unit exhaust vertically instead of horizontally; reducing the
space required between units and combustible surfaces and
materials.
SUGGESTED USE:
• When there is limited space for locating units.
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