
Thermozone AD 200 W
24
TVV20/25, valve + SD20, actuator
This combination allows water fl ow regulation and hence
heat output to be controlled by a thermostat, but without
the option of manual adjustment or isolation of the water
supply.
The VR20 is suitable for DN20 (
3
/
4
”) pipe-work and the
VR25 for DN25 (1”) pipe-work.
Water regulation
VR20/25, set of valves
For the facility to isolate the air-curtain from the water
supply pipe-work (should removal of the air-curtain or
heating coil be necessary) a set of valves are required.
An integral thermostat controls the water fl ow / heat
output.
Use of a bypass valve ensures a small water fl ow is
maintained, the valve quickly responds to heating requi-
rements as dictated by the thermostat.
The SWR20 is suitable for DN20 (
3
/
4
”) pipe-work and the
SWR25 for DN25 (1”) pipe-work.
• AV20/25, stop valve
Isolates the unit from the water supply. Consists of a ball
valve which is either open or closed.
• JV20/25, adjustment valve
Enables adjustment of the water fl ow to the required
level.
(kv-value for JV20: 0,13 - 5,9. kv-value for JV25: 0,17
- 8,52). When maintenance is needed, the valve can be
used to isolate the air-curtain from the water supply.
For specifi cation table for the adjustment valves JV20
and JV25, see separate sheet
.
• BPV10, bypass valve
The BPV10 bypass valve ensures a small water fl ow
is maintained, the valve quickly responds to heating
requirements as dictated by the thermostat even when
the regulation valve (TRV20/25) is closed. To adjust the
valve: close completely and then open it one turn. If the
air curtain is sited at the end of long supply pipe-work
resulting in a low supply pressure, the bypass valve may
be opened even more.
• SD20,
actuator on/off 230V
A thermostat determines if the two position motorised
valve is open or shut, thereby regulating the supply of
heat to the Thermozone.
A 5 second closing of the valve prevents sudden pres-
sure changes in the pipe system.
The motor is rated at insulation class IP40.
• TRV20/25, 3-way regulation valve
Pressure class PN16, maximum pressure 2000kPa
(20Bar),
Max pressure drop:
TRV20, 100kPa (1,0Bar)
TRV25, 62kPa (0,62Bar).
Kv-value: TRV20 3,5
TRV25 5,5
+
230V ~
230V ~
C
˚
C
˚
AV20/25
BPV10
V
R2
0
/2
5
RTE/KRT(E)
JV20/25
SD20
TRV20/25
TVV20/25
RTE/KRT(E)
SD20
GB