6
RT-SVX50C-EN
General Information
Unit Inspection
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.
Precautionary Measures
•
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.
•
Wash clothes separately from other clothing: rinse
washer thoroughly.
•
Operations such as sawing, blowing, tear-out, and
spraying may generate fiber concentrations requiring
additional respiratory protection. Use the appropriate
NIOSH approved respiration in these situations.
First Aid Measures
•
Eye Contact - Flush eyes with water to remove dust. If
symptoms persist, seek medical attention.
•
Skin Contact - Wash affected areas gently with soap
and warm water after handling.
Storage
Take precautions to prevent condensate from forming
inside the unit’s electrical compartments and motors if:
•
The unit is stored before it is installed; or,
•
The unit is set on the roof curb, and temporary heat is
provided in the building. Isolate all side panel service
entrances and base pan openings (e.g., conduit holes,
S/A and R/ A openings, and flue openings) from the
ambient air until the unit is ready for start-up.
Note:
Do not use the unit’s heater for temporary heat
without first completing the start-up procedure
detailed under
“Start Up,” p. 23
.
The manufacturer will not assume any responsibility for
equipment damage resulting from condensate
accumulation on the unit’s electrical and/or mechanical
components.
Unit Description
Before shipment, each unit is leak tested, dehydrated,
charged with refrigerant and compressor oil, and run
tested for proper control operation.
Direct-drive, vertical discharge condenser fans are
provided with built-in thermal overload protection.
The stages of capacity control for these units are achieved
by starting the Economizer Control Actuator (ECA).
Economizer Control Actuator
Electromechanical Control
The ECA monitors the mixed air temperature, return air
temperature, minimum position setpoint (local or
remote), power exhaust setpoint, CO
2
setpoint, CO
2
, and
ambient dry bulb/ enthalpy sensor or comparative
humidity (return air humidity against ambient humidity)
sensors, if selected, to control dampers to an accuracy of
±5 percent of stroke. The actuator is spring returned to the
closed position any time that power is lost to the unit. It is
capable of delivering up to 25 in·lb of torque and is
powered by 24 Vac.
WARNING
Fiberglass Wool!
Product contains 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. You MUST wear all necessary Personal
Protective Equipment (PPE) including gloves, eye
protection, a NIOSH approved dust/mist respirator, long
sleeves and pants when working with products
containing fiberglass wool. Exposition to glass wool
fibers without all necessary PPE equipment could result
in cancer, respiratory, skin or eye irritation, which could
result in death or serious injury.
