DeDietrich GT 530A Series, Руководство по сборке, установке и обслуживанию, Страница: 18 / 86

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GT 530A DDR_G30A/AE _IO_V4.0 09/2013
Recommendations
• The installation must be made in accordance with
codes in effect.
• An expansion tank has to be connected to the
system Safety valve must be connected to the
boiler piping without any valve or stop installed
between the device and the boiler.
• Pressure reducing valve and back flow preventer on
boiler make up water feed.
• The boiler when used in connection with a
refrigeration system must be installed so the chilled
Filling
The boiler may be filled using the drain tap or water
make-up system.
Filling should be done at a slow flow rate in order to
purge all the air continued in the system through air
vents installed at the system high points filling is always
done with circulating pumps stopped.
medium is piped in parallel with the boiler with the
appropriate valves to prevent the chilled medium
from entering the boiler
• The boiler piping system of hot water boiler
connected to heating coils located in the air
handing units where thy may be exposed to
refrigerated air circulation must be equipped with
flow control valves or other automatic means to
prevent gravity circulation of the boiler water
during the cooling cycle.
Installation Specifications
Minimum Safety value Flow according to the maximum boiler output
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Source: ASME Boiler and Pressure Vessel Code IV