333495-YTG-C-0908
4 Johnson Controls Unitary Products
• More Attractive Appearance - A single piece Water
Shed top cover containing a top discharge condenser fan
arrangement requires less square footage on installation
and provides a wider variety of installations. The one
piece design adds greater water integrity. Rounded
corners with water drip edges add to the attractive
appearance. The cabinet panels have a non-fibrous
insulation that will not release insulation fibers into
conditioned area.
• Top Discharge - The top discharge condenser fan does
not disrupt neighboring areas or dry-out vegetation
surrounding the unit. The warm air from the top mounted
fan is blown up away from the structure and any
landscaping. This allows compact location on multi-unit
applications.
• Condenser Coil Grille - A multi-piece totally enclosed,
rigidly mounted condenser coil grille provides protection
from objects after installation and provides protection
during transit.
• Low Operating Sound Level - The upward air flow
carries the normal operating noise up and away from the
living area. The rigid top panel effectively isolates any
motor sound. Isolator mounted compressor and the
rippled fins of the condenser coil muffle the normal fan
motor and compressor operating sounds. The unique
formed base pan also aids in sound alterations with it's
Super-Structure design. This design strategically places
embossments in the pan for optimum strength and rigidity.
• Fan System - All models operate over a wide range of
design conditions with an electrically commutated fan
motor. These units easily match all types of applications
and provide greater on site flexibility to match comfort
requirement. The cooling speed is factory set and can be
field adjusted to a second speed. The heating speed is
factory set to maintain mid point rise at the units heating
input, but can be field adjusted. This allows maximum
comfort conditions.
• Simple Control Circuit - A low voltage printed circuit
board contains a diagnostic indicator light and a low
voltage terminal strip. An additional set of pin connectors
is also provided to simplify the field interface of external
controls. Mate-n-lock plug connectors are used. The
electrical control box is not located in the compressor
compartment. The controls are mounted on a Control-Tilt
control panel to allow the access cover to be removed for
trouble shooting and maintenance without affecting the
normal system operating pressures. All wiring internal to
the unit is color/number coded.
• Protected Compressor - The compressor is internally
protected against high pressure and temperature. This is
accomplished by the simultaneous operation of high
pressure relief valve and a temperature sensor which
protect the compressor if undesirable operating conditions
occur.
• Pressure Switches - High pressure and low pressure/
loss of charge switches standard in all units. When
abnormal conditions are sensed through the pressure
switches, the unit will lock out preventing any further
operation until reset or problem is corrected.
• Exclusive Coil Design - Grooved copper tubes and
enhanced aluminum fin construction improves heat
transfer for maximum efficiency and durability.
• Low Maintenance - Long life, permanently lubricated
condenser and evaporator fan motor bearings need no
annual maintenance adding greater reliability to the unit.
Blower assembly can be easily cleaned by the unique
Slip- Track slide-out blower assembly.
• Secured Service Access Ports - Protected, externally
mounted, re-usable service access ports are provided on
both the high and low lines for ease of evacuating and
charging the system. No final field mounting required.
•
Easy Service Access - A large, single panel covers the
electrical and gas controls makes servicing easy. The
blower compartment has an additional large panel with a
built-in handle tab. Removing this panel will allow the
blower assembly to slide-out for easy removal for
maintenance and ease of trouble shooting.
• Replacement Parts - The installer requires no special
training to replace any of the components of these units
and does not need to maintain an inventory of unique
parts.
• System Integration - Each unit has the internal ability to
integrate an electronic air cleaner or humidifier to work in
conjunction with the base unit.
Field Installed Accessories
• Economizer Down Discharge/Supply Kit - Modulating
integrated economizer provides simultaneous operation
between the mechanical cooling and economizer
operation. Independent blade design insures proper
control and less than 1% leak rate. Includes hood and
mesh bird screen filter integrated into the hood, dry bulb
sensor and relief damper. Separate field accessories of
single enthalpy and dual enthalpy are also available. A
built-in barometric relief of 25% is provided.
• Single Enthalpy Sensor - Sensor replaces dry bulb
sensor standard in economizer kit. Provides improved
economizer operation by sensing the dry bulb
temperature from outdoors plus the enthalpy content of
the outdoor air.
• Dual Enthalpy Sensor - Additional sensor to single
enthalpy sensor. Sensor senses both the return air
temperature dry bulb and humidity in conjunction with the
single enthalpy to determine the most economical mix.
Single Enthalpy sensor also required.
• Hail Guard Kit - Kit contains protective grilles made of
expanded aluminum with full perimeter frame. Sloped
hoods are also included to assure maximum protection.
• Anti Short Cycle Timer (BHZ Units Only) -
Automatically prevents the compressor from restarting for
5 minutes after cycled off.Not required if Thermostat
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