31
Unibox TQ RTL vario
Technical description
102273680-V01.07.2019
3.4 Operating elements
3.4.1 Return temperature limiter
You can set the desired fluid temperature for
the surface temperature balance with the hand
-
wheel. The return temperature limiter integrated
in the valve detects the fluid temperature flow
-
ing through and opens and closes the valve
accordingly.
The recommended control range
lies between approximately 25 °C
and approximately 40 °C.
1
2
3
Illustr. 4: Handwheel
(1)
Handwheel
(2)
Graduation figure
(3)
Valve with presettable insert and inte
-
grated return temperature limiter
Graduation figure
Temperature
0
(Valve fully closed)
10
10 °C
20
20 °C
25
25 °C
30
30 °C
35
35 °C
40
40 °C
-
(Valve fully open
until a temperature of
approximately 43 °C
has been reached)
NOTICE
Damage to the screed as a re-
sult of incorrect temperatures!
f
Observe the instructions of the
screed manufacturer.
f
Do not exceed the screed tem-
peratures near the heating pipes
specified as per DIN EN 1264-4.
3.5 “QA” valve insert
Set the flow rate at the handwheel of the “QA”
valve insert using the presetting key (the set
values are visible from outside). This will pro
-
tect the setting against unauthorised tamper-
ing. The valve insert is infinitely adjustable. The
setting can be modified whilst the system is in
operation.
1
2
Illustr. 5: Setting of the valve insert “QM”
(1)
Set value x10 (l/h)
(2)
Indicator mark
Control range
Δp max.
150 kPa (1.5 bar)
Δp min.
(10 – 130 l/h)
10 kPa (0.10 bar)
Δp min.
(>130 – 170 l/h)
15 kPa (0.15 bar)
Summary of Contents for Unibox TQ RTL vario
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