Page 17
7
WATER CONNECTIONS
7.1
EVAPORATOR
The connections schemes relating to evaporator are featured in the paragraph 7.4 HYDRAULIC VERSIONS
The connection tubes have to be supported adequately in order that their weight does not damage the plant.
It is necessary that the water flow rate to the unit is compatible with the evaporator one. It is also necessary that
the water flow rate is kept uniform while the unit is running: it is suggested to use always a pump system
dedicated to the unit and independent from the remaining part of the plant.
Before stalling units with temperature around 0°C please evacuate the exchanger with compressed air in order
to avoid breakings due to ice.
If the unit is installed in order to replace another, the entire hydraulic system must be emptied and cleaned
before the new unit is installed. Regular tests and proper chemical treatment of water are recommended
before starting up the new unit.
In the event that glycol is added to the hydraulic system as anti-freeze protection, pay attention to the fact
that intake pressure will be lower, the unit’s performance wil be lower and water pressure drops will be
greater. All unit-protection methods, such as anti-freeze, and low-pressure protection will need to be reset.
Before insulating water piping, check that there are no leaks.
Evaporator
nominal pressure (PN)
= 16 bar.
CAUTION:
Install a mechanical water filter at the
water inlet
of each heat exchanger as featured in the par. 7.4
HYDRAULIC VERSIONS. Failure to install the filter allows access of solid particles and / or welding slag inside
the heat exchanger. We recommend the installation of a filter having a filtering net with holes not exceeding 0.5
mm in diameter.
Trane cannot be held responsible for any damage to heat exchangers due to the lack of good quality water
filters.
Summary of Contents for CCUF
Page 26: ...Page 26 USER SIDE...
Page 28: ...Page 28 USER SIDE...
