Appendix 2-3
2-3 Economizer
As introduced in Appendix 1 Section 1-4, DX type and flash tank type economizers are available
depending on the system and application.
Figure app.2-2
The DX type economizer in Figure app.2-2 is indicating the shell and tube type as a
representative example. However, it is also possible to select the plate type heat exchanger and
electronic type expansion valve according to the system and application.
2-4 Protection Devices and Control Devices
The protection devices and the control devices, e.g. various sensors are required for the
multi-package unit as well as the single-package unit.
Install the protection devices by considering the applicable regulations, applications, and
maintenance.
Please refer also to Chapter 1, Section 1.4 and Chapter 2, Section 2.3.3 in this manual.
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