Page 31
7.7.2
Flow switch installation
To ensure adequate water flow through the evaporator, it is essential to install a flow switch on the water circuit.
The flow switch must be installed according to the relevant hydraulic diagram among those reported in the par
7.4 HYDRAULIC VERSIONS. The purpose of the flow switch is to stop the unit in case of an interruption of the
water flow while protecting the evaporator from freezing. Since no water flow control is installed on board the unit,
the installation of the flow switch, always provided as a loose accessory by Trane, in the customer’s plant
is mandatory.
The flow switch installation can be horizontal and vertical, screw-in thread, RP 1" (ISO7/1). It should be installed
far from elbows or throttling with an arrow on flow direction. If pipe is vertical recalibrate range to balance
paddle weight. If the device is downwards mounted take care to slags and apply it in a straight pipe far from filters,
valves, etc with length at least 5 times the diameter of pipe upstream and downstream the unit. The paddles
must be installed starting from the shortest.
Blade type flow switches are available as loose accessories and are suitable for harsh environments and for pipes
with diameters from 1” to 8”. The flow switch has a contact which must be wired, by the contractor,
on the jobsite.
Check the unit wiring diagram for more information. See the instruction sheet inside the flow switch box for
information about positioning and settings.
PIPES TABLES
To Next Page
Loading...
