Water Control - Frico Thermozone SF WL Series User Manual

Water control

VKSF, three-way motor valve with actuator and by-pass valve can be
integrated in the unit.
If the three way valve (TRV20/25) is closed,
a low flow passes through the by-pass valve
(BPV10) so that there is always warm water
in the water coil. This is to provide quick
heat supply when a door is opened but also to
provide a degree of frost protection. Actuator
(SD20) controls the heat supply on/off.
TRV25 is DN25 (1"). The by-pass valve is
DN10 (3/8").
SD20, actuator
on/off 230V~ (soft close)
For control of the water supply. Works on/off.
A 5 second cycle of opening and closing of the
valve prevents sudden pressure changes in
the pipe system. IP40.
SF WL
AV25, stop valve
The stop valve consists of a ball valve which
is either open or closed and is used to shut off
the flow, when servicing for example.
JVF20/25, adjustment valve
The adjustment valve can be used to finely
adjust or shut off the water flow manually.
The adjusted water flow can be read directly
off the valve. JVF20 has a kv value of 3.5 and
JVF25 has a kv value of 5.5.
To be supplemented with a suitable
thermostat for control.
GB
15