5
Heat exchanger QWT, WTI, SWT / Water requirements
5 Technical data
Item
output Minimum pump capacity Pressure loss
Item no.
kW at 90°
Heating Pool water Heating Pool water
m³/h m³/h kPa kPa
QWT 100-20 23 2 10 4.1 4.3 305 018 00
QWT 100-30 32 2 10 6.2 4.9 305 026 00
QWT 100-40 46 2 10 9.3 5.3 305 003 00
QWT 100-70 75 3 12 3.4 7.2 305 017 00
QWT 100-104 137 5 15 13.2 11.3 305 027 00
QWT 100-140 168 2 x 3 20 2 x 3.4 14.1 305 037 00
QWT 100-209 304 2 x 3 25 2 x 13.2 17.0 305 047 00
2 combi sockets 1 ½” x DN 40 or 2” x DN50
For heating the pool water by connecting to a central heating system.
Consisting of a stainless steel jacket with a welded-in stainless steel coil, complete with a thermowell
forthe installation of an electronic temperature sensor. Holder and rubber hose assembly kit.
5.1 QWT 100
Operating pressure: on the heating side: 10 bar
on the pool water side: 3 bar
QWT, SWT WTI, SWT-T
Chloride max. 500 mg/l max. 3000 mg/l
Free chlorine content max. 1.3 mg/l unlimited
pH value min. 6.8 min. 6.5
max. 8.2 max. 8.2
Iron max. 0.1 mg/l max. 0.1 mg/l
Copper max. 0.2 mg/l max. 0.2 mg/l
Salt content max. 0.08% max. 3.5%
Temperature max. 40°C max. 40°C
Langelier index of -0,3 – +0,3 of -0,3 – +0,3
4 Water requirements
Water in swimming/bathing pools or swimming/bathing ponds must not exceed or fall short of the
following values.