TempMaster OmniElite, Engineering Manual, Page: 8 / 80

TEMPMASTER 8
FORM TPM3-EG1 (518)
POWER OPTIONS
Single-Point Supply with Terminal Block – This configuration is standard, and includes
three terminals for the incoming 3-phase power and is the standard configuration for the
TempMaster OmniElite product. It includes the enclosure, terminal-block, and intercon-
necting wiring to the compressors, heater and furnace controls, all fans, etc. In this con-
figuration, code requires that a means of disconnect (not provided) must be installed at
the site within line-of-sight of the equipment.
Single-Point Supply with Non-Fused Disconnect Switch –
This option is the same as
the single-point with terminal block option except it includes a unit-mounted through-the-
door manual non-fused disconnect switch with an external, lockable handle (in compli-
ance with Article 440-14 of National Electric Code (NEC)). This option provides a means
to isolate the unit power voltage for servicing. Others must supply separate external fusing
which must comply with the NEC and/or local code s.
Dual-Point Supply with Terminal Block – This option includes enclosure, terminal blocks
circuited to the supply and exhaust fans and control transformer, and a second set of
terminal blocks with interconnecting wiring to the compressors, heat (if applicable), and
condenser.
Convenience Outlet –
This options includes a powered 115V GFCI convenience outlet that
can be used for powering tools or lights for servicing. A protective cover plate is included
while not in use. The outlet is located on the bottom left hand corner of the power panel.
CONTROL FEATURES AND OPTIONS
Microprocessor-Based Single Package Unit Controller –
All TempMaster OmniElite
units are equipped with a factory-installed, programmed and commissioned unit controller
with all I/O capabilities and control sequences. The controls include all on-board diagnostic,
safety and control features to operate the single package unit. A multimedia card interface
is included for software upgrades and can be used for data logging to simplify equipment
troubleshooting. Communication ports are included as standard with three alarm outputs, a
shutdown contact, remote start/stop input, smoke ventilation controls, analog inputs for SAT
and duct static pressure reset, along with a variety of other capabilities.
Standard Ambient – TMAL120–150 models operate down to 50.0°F as standard.
Low Ambient – This option includes low ambient control of all three refrigerant circuits
down to 0.0°F through the use of suction and discharge pressure transducers, as well as
condenser fan speed using a variable frequency drive (VFD) on the first condenser fan of
each circuit.
Pressure Transducers with Readout Capability – This option includes suction and dis-
charge pressure transducers on each circuit and provides pressure readout of all circuits
at the unit control panel.
Wall-Mount Zone Sensor – A 10 kOhm thermister type III NTC zone sensor for wall
mounting. This zone sensor is for sensing temperature only and does not include any
setpoint adjustment features.
COMMUNICATIONS
BACnet
®
MS/TP (RS-485) Communications –
This communication option is standard on
every TempMaster OmniElite unit. Communications to the unit are through a twisted pair,
and the wire terminations are on the primary unit control board. See supplemental infor-
mation for the available control points and protocol implementation conformance state-
ment (PICS)/BACnet
®
interoperability building blocks (BIBBs) statements of conformity.
Features and Benefits (Cont'd)
Zone Sensor