Addison DCA Series Installation, Operation And Maintenance Manual

INSTALLATION OPERATION and MAINTENANCE MANUAL
100% Outside Air Cooling/Dehumidifying Units
High Efficiency Packaged PCA/DCA Systems
!
WARNING: READ SAFE OPERATION RULES AND MANUAL CAREFULLY
APPLICATION
PCA Series endflow packaged and DCA Series Down
discharge air conditioners are designed to cool and
dehumidify 100% outside air for those applications
requiring make up air cooling. These units should not
be used as the primary source of cooling or heating
the conditioned space.
Safe Operation Rules
Please take a few minutes to read our instructions
before you install and use your air conditioner. This will
help you obtain the full value from your air conditioner.
It will also help you avoid any needless service costs
that result from causes we cannot control and cannot
cover in our warranty.
Operational failure of this unit for any reason, including but not limited to mechanical or electrical failure of devices
internal or external to the unit, loss of fuel such as natural or LP gas, or interruption of electric power may result in
the introduction of large volumes of air into the conditioned space that could cause freeze or other damage to
property.
It is the responsibility of the installer and/or user of this unit to provide equipment such as a source of emergency
heat, alarm systems, or supervisory systems to warn of such failures.
CONTENTS
Safety Labeling and Signal Words...................... 2
General Description ............................................ 3
Unit Location ...................................................... 3
Installation.................................................. 3, 4, 5
Sequences of Operation ................................ 5-10
Start-up Procedures.......................................... 10
Preparing Equipment for Operation.............10, 11
Service.........................................................11, 12
Typical Wiring Diagrams...............................13-16
Adjustable Belt Drive Blower............................ 17
General Service Guide ..................................18-20
Check, Test and Start Form .............................. 21
CAUTION
PAGE
Follow these rules and the instructions carefully.
Failure to do so could cause a malfunction of the air
conditioner, resulting in injury, death and/or property
damage.
Check local codes and
installation must comply with their rules.
Always shut off electric power before making unit
connections or removing any panels.
During installation or servicing, be extremely careful to
avoid injury. Components may have sharp edges or
protrusions which can
compressor(s) contain high pressure refrigerant-they
must not be exposed to high temperature or be
punctured.
utility standards. The
cut you. Tubing and
Form #0527N-0831B (0609)