21
RF-SVX003A-GB
2.15 Flow switch installation
To ensure adequate water fl ow through the evaporator,
it is essential to install a fl ow switch on the water circuit.
The fl ow may be either installed on both the inlet pipe of
the water on that output. The purpose of the fl ow switch
is to stop the unit in case of occurring an interruption
of the water fl ow while protecting the evaporator from
freezing. If the unit is equipped with total heat recovery,
install another fl ow to ensure the fl ow of water before
it is modifi ed unit operation in heating mode (Heat
Recovery Mode). The fl ow on recovery circuit prevents
shutting down the unit for high pressure.
The fl ow switch can be mounted in any position far from
elbows or bottlenecks and with the arrow in the direction
of fl ow. For installations on vertical piping is necessary
to calibrate the device to compensate for the weight
of the headstock. If the unit is mounted to the bottom,
we must take caution that deposits that can form. The
appliance must be installed in a straight pipe with no
fi lters, valves, etc.., Have at least 5 times its diameter,
both upstream and downstream
A fl ow meter specially selected for this purpose, is
offered optionally. This fl ow switch, the blade type, is
suitable for applications in harsh environments and
suitable for pipes with diameters from 1 “to 8”. The
fl ow switch is provided with a contact which must
be wired to terminals 11B and 12 (evaporator) of the
terminal X (check the wiring diagram of the unit for more
information). For more information on the positioning
and settings of the device, read the instruction sheet
specifi c place inside the box of the device.
Flow switch installation
Dimensions (mm)
Mounting instructions
Paddle (model without “T” piece)
TUBAZIONE
PALETTE
1”
1
11/4”
1
11/2”
1
2”
1,2
21/2”
1,2
3”
1,2,3
4”
1,2,3
4” Z
1,2,3,4
5”
1,2,3
5” Z
1,2,3,4
6”
1,2,3
6” Z
1,2,3,4
8”
1,2,3
8” Z
1,2,3,4
