WURM HCO2-G4 Installation

1 HCO -G4
2
Master module for process control of R744 refrigeration plants
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Front view

Fig. 1: Front view of HCO -G4
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1.2

Features

• Simple start-up with parameter settings for the plants using default settings from the expert data-
base
• Connection of 12 field modules
• High and medium pressure control
• Gas cooler control
• Control and monitoring of 2 compressors (parallel compressors)
• Control of 3 fluid ejectors and 7 gas ejectors
• 7-step sequence for heat recovery (HR)
• Calculation of the amount of heat recovered through HR
• Optional heat generation by heat pump evaporator
• Air conditioning operation by thermosiphon, high pressure or external MT cold location
• Start-up mode for initial installation and control circuit blocking for service operation
• Additional control circuits for collector fill level monitoring, LT pressure level, desuperheating,
post-injection, oil return
• Integrated relay outputs
• CAN bus connection by patch cable and push-in terminals
• Wurm G4 operating concept
• Innovative user interface with sticky keys
• Graphical display with backlighting, plain text, 6 operating keys, and 1 Info key
• Context-sensitive Help with links to the paperless info Wurm-App
• Direct navigation by Quicklink
• Fastening in the installation frame, or individual installation without frame
• Connection to the Wurm system through a Wurm CAN communication bus (C-BUS) and
FRIGODATA XP
• High level of safety with the galvanically isolated Wurm CAN field bus (F-BUS) which is used to
connect the field modules
HCO2-G4_R.1.0.9_V8.1.4_PI_2018-12_EN
Master module for process control for R744 refrigeration plants
Subject to technical changes
HCO -G4
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