General Information
CLCH-SVX009A-EN
7
General Information
Operating Environment
Performance Climate Changer™ air handler model UCCA
is designed for indoor applications. When considering the
placement of the air handler, it is important to consider the
operating environment. The acceptable ambient
temperature range for unit operation is -40ºF to 140ºF
(-40ºC to 60ºC).
Do not operate unit above maximum fan speed or unit
airflow as shown in the unit fan curves. (See CLCH-
PRC024A-EN Performance Climate Changer Air Handler
Model UCCA catalog.) Unit operation at greater than
maximum fan speed can drastically reduce bearing life
and result in a catastrophic failure. Operating at greater
than the maximum allowable airflow in the cooling mode
may result in unsatisfactory operation due to moisture
carryover from the coil. In addition, it is often not
economical to operate a unit at its maximum fan speed
due to the greater motor power requirements.
Do not operate units with electric heat below the minimum
airflow listed (see
Table 11, page 44
).
This is to prevent
excessive leaving air temperatures and electric heat limit
trips.
Do not operate a hydronic (or steam) coil and electric heat
simultaneously. This is to prevent excessive leaving air
temperatures and limit trips. Electric heat units are
equipped with a lockout switch to disable the electric
heater if the temperature of the hydronic (or steam) coil is
greater than 95°F (35C).
For heating applications, a special motor may be required
to withstand the higher temperatures. Motors with Class B
insulation are acceptable for ambient temperatures up to
104º F, while motors with Class F insulation can withstand
ambient temperatures to +140º F (60º C).
Note:
Units with UL approval have a maximum ambient
temperature requirement of 104ºF. The customer
should provide adequate freeze protection for the
coils. See
“Routine Maintenance,” page 54
for
more information.
Unit Description
The Performance air handler model UCCA is designed for
budget-conscience applications, but does not sacrifice on
construction, quality, or performance.
•
2-inch R13 foam insulated panels and doors
•
Less than 0.005 inches at +/-4 inches w.g. panel and
door deflection
•
All airfoil bladed dampers meet ASHRAE 90.1 lowest
specified leakage
•
Quick-connect wiring minimizes installation costs and
provides wiring integrity between sections
•
Factory engineered and mounted control packages
•
Hinged and handled access doors
•
UL/CUL listed
•
AHRI Standard 430-certified air-handling unit
•
AHRI Standard 410-certified coils
•
2-inch/4-inch combination filter, or 2-inch/4-inch
combination filter in a mixing box
•
Fan options including forward curved (FC) and direct-
drive plenum (DDP) fans
•
Electric heat including full modulating control
•
Units ship on skid for forklift transportation at job site
•
Building Information Modeling (BIM) drawing to
minimize jobsite ductwork, electrical, piping, and
structural interference
For more information, refer to the following documents,
available from your local Trane sales engineer:
•
CLCH-PRC024A-EN, Performance Climate Changer™
Air Handler Model UCCA catalog
•
CLCH-PRG004-EN, Performance Climate Changer™
Air handler Model UCCA guide specifications
•
CLCH-SLB022-EN, Performance Climate Changer™ Air
Handlers for Every Need sales brochure
