Grundfos UPM3 Manuel D'installation Et D'utilisation page 24

3. BALANCING AND SETTING THE SYSTEM 1. DESCRIZIONE DEI COMPONENTI
By setting the bypass to 1, a 1032 l/h flow rate corresponds to a 90 mbar
pressure drop (0.09 bar).
Assuming that ΔP pav = floor-mounted system pressure drop = 0.25 bar,
set the capacity of the Wilo Yonos PARA circulator in order to sure a flow
/h) and a head H = ΔP valv + ΔPpav = 0.09 + 0.25
rate of 1032 l/h (1.03 m
3
= 0.34 bar (@ 3.4 m CA).
Here below are some tables that report the data for systems selected based
on the requested heating capacity.
Therefore, first use the table or formulas to carry out the setting and then
use the thermometers to make sure the project temperatures of the fluid
are actually reached.
To increase the ΔT of the floor circuits, just reduce the bypass flow rate.
ΔTip = 10 °C T Boiler = 70 °C Tip = 45 °C
Capacity (W) Circulator
setting
18000 maximum
17000 maximum
16000 maximum
15000 maximum
14000 maximum
13000 average
12000 average
11000 average
10000 average
24
Tc
Qby-pass
Tr
ΔPip = 0,25 bar ΔTip = 5 °C T Boiler = 70 °C Tip = 45 °C
Bypass
setting
5
3 - 4
2
1
0
5
4
2 - 3
1
Tip
Tr
Capacity (W) Circulator
setting
9000 maximum
8000 maximum
7000 maximum
6000 average
5000 average
4000 average
GB GB IT IT
Qip
ΔPip = 0,25 bar
Bypass
setting
5
2 - 3
0
5
2 - 3
0