Installation, Operation and Maintenance Manual
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6
Important Components
Remote Heat Exchanger
Air cooled outdoor condensers and fluid coolers have individual Installation, Operation and Maintenance manuals
which should be referred for more complete details. Most of the controls on remote condensers and fluid coolers
consist of basic electromechanical type components.
Refrigeration Components
6.2.1
Expansion Valve
Each refrigerant circuit has an adjustable thermal expansion valve (TXV). These are factory adjusted to their nominal
range and normally do not need re-adjustment
. Any field adjustment should be to “fine tune” a system that has
stabilized and already has acceptable operating parameters. Adjusting a TXV to produce large swings in superheat
is not recommended.
6.2.2
High Pressure Cutout Switch
Each refrigeration circuit is protected by a high-pressure cutout switch with a manual reset button. The switch is
located near the compressor. The fixed pressure setting for R-410A systems is 575 PSIG (3965 kPa).
6.2.3
Low Pressure Cutout Switch
Each refrigeration circuit includes a low-pressure cutout switch with automatic reset. The switch is located near the
compressor. The fixed pressure setting for R-410A systems is 20 PSIG (138 kPa).
Controls
6.3.1
Mini-dap4 Controller (Ceiling Units)
The Mini-dap4 controller is the standard controller on ceiling mounted gPod units.
NOTICE
The Mini-dap4 controller has an entire manual dedicated to extensive
detail regarding functions, features, programming and troubleshooting. This
manual must be referenced to complete a thorough unit installation and start-
up and is not complete until the Mini-dap4 controller settings are established.
6.3.2
dap4 Controller (Floor Units)
The standard controller on all floor mounted gPod equipment is the dap4 controller. The Expanded dap4 controller
is also available as an upgrade from the Mini-dap4 and offers additional features and additional analog
inputs/outputs compared to the Mini-dap4. This state-of-the-art controller has a separate manual that goes into
extensive detail regarding functions, features, programming and troubleshooting.
NOTICE
The dap4 or Mini-dap4 controller has an entire manual dedicated to
extensive detail regarding functions, features, programming and
troubleshooting. This manual must be referenced to complete a thorough unit
installation and start-up and is not complete until the dap4 controller settings
are established.
