Space Temperature / Rh Sensor (Optional); High Temperature Sensor; Outdoor Air Temperature And Relative Humidity Sensor; Control Input (Occupied / Unoccupied) - Trane Horizon OAB Series Installation, Operation And Maintenance Manual

General Information

Space Temperature / RH Sensor (Optional)

Field installed, wall mounted temperature sensor
(BAYSENS036A) and humidity to control space cooling,
heating and dew point.

High Temperature Sensor

The Discharge Air Temperature Sensor (DTC) supplies a
continuous signal to the MCM. If the MCM does not sense
a signal from the DTC, the unit will go into LOCKOUT and
require a manual restart once the proper operation of the
DTC has been confirmed. 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.
Through the Base Electrical with
Disconnect Switch
Factory installed 3-pole, molded case disconnect switch
with provisions for through the base electrical connections
will 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.

Hinged Access Doors

Hinged access doors with hold open brackets will be
factory-installed.
12

Unit Inspection

WARNING
Fiberglass Wool!
Product may contain fiberglass wool. Disturbing the
insulation in this product during installation,
maintenance or repair will expose you to airborne
particles of glass wool fibers and ceramic fibers known
to the state of California to cause cancer through
inhalation. Glass wool fibers may also cause
respiratory, skin or eye irritation.
AVERTISSEMENT
Laine de verre!
Le produit peut contenir de la laine de verre. Des
interventions inappropriées sur l'isolation de ce produit
pendant les opérations d'installation, d'entretien ou de
réparation vous exposent à des particules aériennes de
fibres de verre ou de fibres céramiques, responsables
selon la législation américaine (état de Californie) de
risques de cancers par inhalation. Les fibres de verre
peuvent aussi provoquer des phénomènes d'irritation
au niveau du système respiratoire, de la peau ou des
yeux.
As soon as the unit arrives at the job site:

Verify that the nameplate data matches the data on
the sales order and bill of lading (including electrical
data).

Verify that the power supply complies with the unit
nameplate specifications.

Visually inspect the exterior of the unit, including the
roof, for signs of shipping damage.

Visually inspect the internal components for shipping
damage as soon as possible after delivery and before
it is stored. Do not walk on the sheet metal base pans.

If concealed damage is discovered, notify the carrier's
terminal of damage immediately by phone and by
mail. Concealed damage must be reported within
15 days.
Request an immediate joint inspection of the damage
by the carrier and the consignee. Do not remove
damaged material from the receiving location. Take
photos of the damage, if possible. The owner must
provide reasonable evidence that the damage did not
occur after delivery.

Notify the appropriate sales representative before
installing or repairing a damaged unit.
• Avoid breathing fiberglass dust.
• Use a NIOSH approved dust/mist respirator.
• Avoid contact with the skin or eyes. Wear long-sleeved,
loose-fitting clothing, gloves, and eye protection.
OAU-SVX005C-EN