Frico Thermozone AR300 Serie Mode D'emploi page 31

GB
Functions on DIP-switch 1-4
As a default setting all the DIP-switches are in
OFF-position. See p. 6-7.
1. Not in operation
2. OFF gives a night setback of 4K with supply
of 5-30V AC/DC on contact 91-92. ON
gives external on/off with 5-30V AC/DC on
contact 91-92. No night setback possible
3. OFF for normal operation. ON assures that
the unit does not start, nor heat or fan,
when the door is closed.
4. OFF for normal operation with alarms. ON
for unit running without alarm functions
Water control
VR20/25, set of valves
Used to control the water supply to water
heated units.
The valve kit consists of the following:
• AV20/25, stop valve
• JVF20/25, adjustment valve
• TRV20/25, 3-way control valve
• BPV10, bypass valve
• SD20, actuator on/off 230V~ (soft close)
The Stop valve (AV20/25) consists of a ball
valve which is either open or closed and is
used to shut off the low, when servicing for
example. The adjustment valve can be used
to inely adjust or shut off the water low
manually. The adjusted water low can be
read directly off the valve. JVF20 has a kv
value of 3.5 and JVF25 has a kv value of 5.5.
If the three way valve (TRV20/25) is closed,
a low low 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. The
valve set has two different sizes in the valves.
VR20 is DN20 (3/4") and VR25 is DN25 (1").
The by-pass valve is DN10 (3/8").
See illustrations page 5
30
AR 300 E/W
Figure 5
(1) Door status (lit with closed door). Red LED.
(2) Heat/no heat (lit in heat state). Green LED.
(3) Alarm. Red LED.
(4) Room temperature sensor 5-30 °C
(5) Button (heat/no heat).
(6) Door sensor.
TVV20/25, 2-way control valve
TVV20 is DN20 (3/4") in size and TVV25
is DN25 (1") in size. Pressure class PN16.
Maximum Pressure 2 MPa (20 bar).
Maximum pressure drop TVV20: 100 kPa (0.1
bar)
Maximum pressure drop TVV25: 62 kPa
(0.062 bar)
The Kv value can be set to three positions:
Pos 1
TVV20 kv 1.6
TVV25 kv 2.5
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. Protection class: IP40.
TVV20/25 and SD20 give a simpliied
variant of water control without the
possibillity to adjust or shut down the water
low (for mainteneance or replacemnet of
coil).
See illustrations page 5
TE3434
Flexible hose, length 0.8 metres, for water
connected units (two hoses are required for
each unit) with 3/4" (DN20) external thread
at one end and a connection nut with 3/4"
(DN20) internal thread at the other..
Pos 2 Pos 3
kv 2.5 kv 3.5
kv 4.0 kv 5.5