Mitsubishi Electric NX-W Installation And Operating Manual page 39

UM_NX-W_00_05_19_ML
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it is also important that there is no air in the water circuit and no sudden variations in pressure or any points below atmospheric pressure. There must not be any
sudden variations in the flow of vector fluid. When the machine is running, there must not be variations in the flow of fluid of more than 10% a minute. For this
reason, it is advisable to install an independent pump unit for each single evaporator with a circuit separate from the rest of the system.
For the production of domestic water, it is recommended to install an intermediate exchanger to prevent dirt, corrosion and pollution of the water from any oxides.
Type Q and type R multi-purpose machines are for 4 pipe systems whose hydraulic circuits must always be able to have circulating fluid.
The directions for installation set out above represent a necessary condition for the validity of the guarantee. However, MEHITS is willing to examine any different needs,
which must in any case be approved before the refrigeration system is started up.
6.2 Evaporator / recuperator hydraulic circuit diagram
(See fig. 1 page A1)
NOTE: the hydronic kit on board the unit (optional) is not equipped with a filter which must therefore be installed in any case as shown in the diagram above at the
unit inlet.
6.3 Unit water diagrams
Standard unit: NX-W - NX-W/H
Units without air relief valves and without water circuit discharge valve. These devices are the responsibility of the installer and must therefore be installed on the system side.
Standard unit: NX-WN
MITSUBISHI ELECTRIC HYDRONICS & IT COOLING SYSTEM S.p.A.
SYSTEM DELIVERY LINE
SYSTEM RETURN LINE
SYSTEM RETURN LINE
SYSTEM DELIVERY LINE
SYSTEM RETURN LINE
SYSTEM DELIVERY LINE
39
EN
Translation of the original instructions