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Overview
The High Pressure CO2 controller (P/N 818-9010)
application is a standalone controller that operates the
High Pressure Valve (HPV) and the Bypass Gas
Valve (BGV) in a Booster Transcritical CO2 system.
The controller has a heat reclaim feature, safety pa-
rameter operation for the flash gas receiver tank and
calibration feature for the HPV and BGV.
CAUTION! GND is Common, not earth
ground. Do not earth ground this device.
1.1
The High Pressure
CO2 Controller I/O
Points
The board has 6 analog inputs and 11 digital in-
puts, with default configurations pre-loaded for quick
connection to for gas cooler pressure outlet, gas cool-
er temperature, flash gas receiver pressure and enable
digital input. Its 8 relay outputs, rated 2.0 amps max,
are used for activating and deactivating alarms. Its 4
analog outputs may be used for a 0-10 volt signal for
external valve driver for either the HPV or BGV.
Figure 1-1 - High Pressure CO2 Controller
The High Pressure CO2 controller supports local
physical inputs and outputs and communicates with
the E2 controller (version 3.00 and higher) via the
RS485 MODBUS network.
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