Installation and operating instructions
“Floorbox“
11
6. Operation
6.1 Regulation of double regulating
and commissioning valve
A hydronic balance between the various risers
of the heating system according to VOB C/DIN
18380 has to be carried out. This way, all parts
of the system are supplied with heat according
to the design.
As for the Oventrop “Floorbox”, the hydronic
balancing is carried out with the help of the
double regulating and commissioning valve
“Hycocon VTZ”.
Presetting ca be determined by using the Oven-
trop software for pipework calculation. Setting
of the calculated value is carried out according
to the enclosed instructions of the double regu-
lating and commissioning valve.
When calculating the installation manually, a k
vs
value of 6.6 m
3
/h (chart 7.1) has to be consid-
ered for the “Floorbox”. The pressure loss at the
double regulating and commissioning valve
must also be included the calculations.
The differential pressure to be throttled at the
double regulating and commissioning valve
“Hycocon VTZ” has to be calculated. With the
known flow rate in the design point, the preset-
ting can be taken from chart 7.2.
When using the fill and drain tool (item
no. 1061791) or the measuring needles (item
no. 1061799), the double regulating and com-
missioning valve “Hycocon VTZ” has to be
turned to the front by 90°.
☞
Illustr. 5.2: Example installation sketch lateral connection
Given:
“Floorbox“
lateral
connection
“Floorbox“
lateral
connection
with heat meter
Number of
heating circuits
4
4
Flow rate
280 kg/h
280 kg/h
Pressure loss
including
risers
180 mbar
180 mbar
Pump pressure
490 mbar at 880 kg/h
6.2 Calculation example
Surface heating
Surface heating
“Unibox E BV“
Supply
Return
“Unibox E BV“
