Frico Thermozone AD300 W Serie Bedienungsanleitung Seite 14

Thermozone AD300 W, AD400 W
Water regulation
VR20/25, Valve set
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 flow /
heat output.
Use of a bypass valve ensures a small water flow is
maintained, the valve quickly responds to heating
requirements as dictated by the thermostat.
The VR20 is suitable for DN20 (
the VR25 for DN25 (1") pipe-work.
• AV20/25 Stop valve
The stop valve (AV20/25) consists of a ball valve
which is either open or closed.
• JV20/25, Adjustment valve
Enables adjustment of the water flow to the
required level.
KV-value: JV20, 0,13- 5,9
JV25, 0,17- 8,52
When maintenance is needed, the valve can be
used to isolate the air-curtain from the water
supply.
For specification table for the adjustment valves
JV20 and JV25, see separate sheet.
• TRV20/25, On/off 3-way motor valve
Pressure class PN16, maximum pressure 2000kPa
(20Bar),
Max pressure drop:
Kv-value:
AV20/25
BPV10
JV20/25
SD20
KRT
C ˚
230V ~
3
/ ") pipe-work and
4
TRV20, 100kPa (1,0Bar)
TRV25, 62kPa (0,62Bar).
TRV20 3,5
TRV25 5,5
TVR20/25
• SD20, Valve motor on/off 230V
A thermostat determines if the two position motori-
sed valve is open or shut, thereby regulating the
supply of heat to the Thermozone.
A 5 second closing of the valve prevents sudden
pressure changes in the pipe system.
The motor is rated at insulation class IP40.
• BPV10, By-pass valve
The BPV10 bypass valve ensures a small water flow
is maintained, the valve quickly responds to heating
requirements as dictated by the thermostat even
when the regulation valve (TVV20/25) 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.
TVV20/25, regulation valve + SD20, actuator +
room thermostat
This combination allows water flow regulation and
hence heat output to be controlled by a thermostat,
but without the option of manual adjustment or
isolation of the water supply.
TVV20/25
SD20
KRT, RTE
C ˚
230V ~
GB
2 9