D-EIMWC00208-16EN - 12/48
Evaporator and exchangers antifreeze protection
Two or more of below protection methods should be considered when designing the system as a whole:
1. Continuous water flow circulation inside piping and exchangers.
2. Addition of an appropriate amount of glycol inside the water circuit.
3. Additional heat insulation and heating of exposed piping.
4. Emptying and cleaning of the heat exchanger during the winter season.
It is the responsibility of the installer and/or local maintenance personnel to ensure that two or more of the described
antifreeze methods are used. Make sure that appropriate antifreeze protection is maintained at all times. Failure to follow
the instructions above could result in damage to some of the machine’s components. Damage caused by freezing is not
covered by the warranty.
Installing the flow switch
To ensure sufficient water flow through the evaporator, it is essential that a flow switch be installed on the water circuit.
The flow switch can be installed either on the inlet or outlet water piping. The purpose of the flow switch is to stop the
machine in the event of interrupted water flow, thus protecting the evaporator from freezing.
A flow switch specifically gauged for this purpose, with identification code 131035072, is available as an option.
This paddletype flow switch is suitable for heavyduty outdoor applications (IP67) for pipe diameters in the range of 1" to
6".
The flow switch is provided with a clean contact which must be electrically connected to the terminals of the terminal
board (check the machine’s wiring diagram for further information).
For further information regarding device installation and settings, please read the instruction leaflet in the device box.
Fig. 5 - Adjusting the safety flow switch
Refrigerating circuit safety valves
Each system comes with safety valves that are installed on each circuit, both on the evaporator and on the condenser.
The purpose of the valves is to release the refrigerant inside the refrigerant circuit in the event of certain malfunctions.
3”
83 mm
4” 107 mm
5” 134 mm
6” 162 mm
5 mm
For 3” - 6” piping
Use paddle b = 29 mm
Adjusting the flow switch’s
trigger sensitivity
Содержание EWLD160~550G-SS
Страница 14: ...D EIMWC00208 16EN 14 48 Fig 7 Condenser Located above Chiller Unit Fig 8 Condenser Located below Chiller Unit...
Страница 21: ...D EIMWC00208 16EN 21 48 Fig 10 Refrigeration cycle EWWD G SS EWWD G XS 23 5 bar...
Страница 22: ...D EIMWC00208 16EN 22 48 Fig 11 Refrigeration cycle EWWD G SS EWWD G XS Partial Heat recovery 23 5 bar...
Страница 23: ...D EIMWC00208 16EN 23 48 Fig 12 Refrigeration cycle EWLD G SS OPTIONAL 23 5 bar...
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