The unit has adaptive controls to monitor indoor
CO
2
or comparative CO
2
requirements. This helps
the unit to introduce a variable amount of fresh
air into the building, maintain IAQ, and improve
customer comfort while reducing energy costs.
Smoke control
The unit is offered with factory installed supply and
return smoke detector options. Auxiliary smoke
control points are also available for smoke purge,
pressurization, and de-pressurization sequences
using the optional customer terminal board. These
sequences are assigned higher priorities to ensure
customer safety.
Filtration
The unit is configured for various types of draw-
through and final filtration options to meet the
different needs and requirements of today's
rooftop applications. This includes throwaway,
pleated, cleanable, and high efficiency filters. Filter
transducers and magnehelic gauges are available to
monitor contamination in filters.
Ultraviolet lights
UV lights are offered as an option and are installed
in the downstream side of evaporator coil. The
UV lights help improve system efficiency, indoor
environmental quality, and occupant comfort.
Growth of mold and bacteria is inhibited when UV
lights are ON. To ensure operator safety, all doors
that have access to UV lights are interlocked with a
switch that disables UV light operation when a door
is opened.
Electrical
Single point power
The unit comes standard with single point power
connections to make installation quick and easy.
Dual point power
Applications that require the mechanical heating
and cooling functions to be separated from the air
handling functions come equipped with dual point
power. The air handling function includes the ability
to operate gas and hydronic heat. This enables the
unit to be operated in an emergency condition while
minimizing power consumption.
Power phase monitor
A power phase monitor is offered as standard
for all products. On dual point power, the phase
monitor is provided on both electrical circuits. The
power phase monitor helps protect the unit from
certain electrical issues, such as phase loss, phase
imbalance, and high and low voltage. To ensure
operator safety, high and low voltage connections
are separated in the controls cabinet.
Unit-mounted disconnect, 65 kA SCCR
Factory provided disconnect is available as an option
to minimize time during installation of equipment
and to reduce necessary field installed items. 65 kA
short circuit current rating (SCCR) is available as an
option to safely withstand the short circuit current.
Service and Installation
Split ship
Tempmaster Omni Premier 60 ton to 80 ton units
are provided with a split ship option, to meet
specific applications. Split ship units are factory
tested, pre-charged with refrigerant and delivered
to the job site split in two segments (air handling
and condenser section) for an easy lift and seamless
integration between power and refrigeration
connections. Units which are shipped split are
intended to be reconnected into one on a common
curb.
See the installation instructions, found in the
Tempmaster Omni™ Premier Split Ship Assembly
Installation Manual (6011418-TIM)
shipped with the
unit.
Internal lights
Marine LED lights are offered as a factory installed
option. Servicing or troubleshooting the unit is
simplified by the presence of lights that improve
cabinet visibility. Depending on the options selected,
lights are installed in the pre and post evaporator,
economizer, evaporator coil, and supply fan
sections. The internal lights switch is located in the
low voltage side of control panel.
Access doors, padlocks, viewports,
safety latch and door tiebacks
Full-sized access doors provide easy access into
the unit for routine maintenance and inspection.
Doors are provided with a padlock option to secure
them from unauthorized access and improve site
safety. Specially designed viewports are offered as
an option on access doors that help with inspection
of the unit under operation. A safety latch that
requires a 5/16 in. Allen wrench is standard on
all positive pressure doors, and door tiebacks are
standard on all doors to secure them for operator
safety during servicing. Refer to the technical
Installing door tie-back brackets
for installation instructions of
Tempmaster
®
Omni™ Premier 25 Ton to 80 Ton Rooftop Units Installation and Maintenance Guide
19
Tempmaster
