Model Description - Bryant 558D User Manual

Head Pressure Control — Kit consists of an outdoor-air ther-
mostat that permits adequate head pressure control during
cooling operation at low outdoor-ambient temperatures.
Refer to Trade Prices for more details or contact your local
representative.
SUGGESTED USE:
• When cooling at low-ambient outdoor temperatures is
desired.
NOTE: The head pressure control is not necessary for 036-150
units to allow cooling operation down to 25 F.
Low-Ambient Kit — Kit consists of a solid-state control and
condenser coil temperature sensor to cycle the condenser-fan
motors in order to maintain condenser-coil head pressure for
proper cooling operation. Refer to Trade Prices for more
details or contact your local representative.
SUGGESTED USE:
• Whenever cooling is required at low outdoor ambient tem-
peratures (as low as −20 F).
• Low-ambient kit is not usually required when economizer is
used.
Electric Heat Packages — Each package consists of one or
more heater modules. Each module slides into keyed mounting
slots in the fan discharge section.
SUGGESTED USE:
• To provide heat in the unit when required.
Single Point Packages (036-150 Units) — Each package con-
sists of a control box, which provides a watertight and UL and
UL Canada approved connection point for electric heat kits.
SUGGESTED USE:
• Required with all electric heat packages for UL and UL
Canada approved single point electrical connection on 036-
150 units.
Thermostats and Subbases — Provide staged cooling and
heating, automatic (or manual) changeover, fan control, and in-
dicator light.
LEGEND
ODS — Order Distribution System
*Refer to Trade Price Sheets or contact your local representative for specific information regarding which options are available on which units.
SUGGESTED USE:
• To control unit operations.
Barometric Relief Package (180-300 Units) — This package
is useful when it is necessary to remove excess pressure from
the conditioned space.
NOTE: Optional economizer is required with this accessory.
SUGGESTED USE:
• When the job requires the ability to relieve internal building
pressure using 180-300 units.
Power Exhaust (180-300 Units) — This package is useful
when it is necessary to remove excess pressure from the con-
ditioned space.
NOTE: Optional economizer is required with this accessory.
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 using 180-300 units.
• When the job requires the ability to move large quantities
of air to relieve pressure in the conditioned space using
180-300 units.
Winter Start Time Delay Relay (216-300 Units) — Used in
conjunction with accessory low-ambient kit or head pressure
control device, permits operation in cooling at lower outdoor am-
bient temperatures. See Trade Prices for more details or contact
your local representative.
SUGGESTED USE:
• When job requires the ability to operate in cooling at low
outdoor-ambient temperatures.
Thru-The-Bottom Power Connection (036-150 Units) —
Used to make power connections through the bottom of the unit.
SUGGESTED USE:
• When utility connections need to be made through the bottom
of the unit.

MODEL DESCRIPTION

(ODS Model Number)
4