General Information
12
OAU-SVX02F-EN
Space Temperature / RH Sensor (Optional)
Field installed, wall mounted temperature and humidity
sensor (BAYSENS036A) to control space cooling, heating
and dew point.
High Temperature Sensor
The Discharge Air Temperature Sensor (DTC) supplies a
continuous signal to the MCM. Factory setting for
Discharge Air Temperature (DTC) Discharge Air
Temperature Setpoint (MDTS) is 90°F (adj 70–100°F), the
unit will be shut down, and require a manual restart if
Discharge Air Temperature exceeds MDTS for 10 minutes
(adj 10–25 minutes). If DAT exceeds Discharge Air High
Temperature Cutoff (DHCS) of 125°F for 10 minutes, the
unit will shut down and require manual restart.
Outdoor Air Temperature and Relative
Humidity Sensor
This factory installed combination outdoor air sensor
located in the outdoor air hood is designed to sense both
outdoor air temperature and relative humidity for use by
the microprocessor controller to make required
ventilation, cooling, dehumidification and heating
decisions. Control Input (Occupied / Unoccupied)
Terminals are provided on the terminal strip labeled
OAUTS for a field installed dry contact or switch closure to
put the unit in the Occupied or Unoccupied modes.
Hot Gas Reheat
This option shall consist of a hot-gas reheat coil located on
the leaving air side of the evaporator.
100 Percent Outdoor Air Hood with
Damper and Filters
Factory-installed and -integrated 100 percent outdoor air
hood with damper controlled by a direct coupled actuator.
The unit can be factory provided with an optional
100 percent return air damper controlled by a direct
coupled actuator that is electrically interlocked with the
outdoor air damper.
Modulating Indirect Gas-Fired Burner
The unit will have fully modulating, high turndown,
indirect gas-fired heat. The heating section will include
high turn-down burners and a stainless steel tubular heat
exchanger. The heat exchanger will be constructed of
type 439 stainless steel and be a tubular design capable of
draining internal condensate. External flue to be
constructed of type 430 stainless steel.
Units will be suitable for use with natural gas or Liquid
Propane (LP) gas.
Through the Base Electrical with
Disconnect Switch
An optional factory installed 3-pole, molded case
disconnect switch with provisions for through the base
electrical connections may be included. The disconnect
switch, with integral overcurrent circuit breaker, will be
installed in the unit in a water tight enclosure with access
through a hinged door. Factory wiring will be provided
from the switch to the unit high voltage terminal block. The
switch will be UL/CSA agency recognized.
Through the Base Gas Piping
The unit will include provisions for installing through the
base gas piping. The factory installed option will have all
piping necessary including an external shutoff piping yoke
with pre-assembled, manual gas shut-off valve, elbows,
and union. The manual shut-off valve will include an 1/8 in.
(3.17 mm) NPT pressure tap. This assembly will require
minor field labor to install.
Hinged Access Doors
Hinged access doors with hold open brackets will be
factory-installed.
Electric Heat
The unit may have four stage or fully modulating SCR
controlled, electric heat. The primary heating section will
include open coil heating elements, automatic and manual
cut-outs, low voltage controls, air proving switch,
maximum 48 amps per circuit and fusing for heaters over
48 amps.
