Installation Instructions

7
Hydraulic connection
The THISION-L/R40 water heater must be installed in such a way, that a minimum water flow
rate of 30% of the nominal flow rate can be assured at all times when the burner is switched
on. The THISION-L/R40 water heater can increase the water temperature by maximum 17K
at once. This means that the water has to cycle through the boiler several times when f.e.
cold water of 10ºC has to be heated up to 60ºC (3 times).
This is normally done by installing the THISION-L/R40 water heater in combination with a
buffer tank. The flow rate from the tank to the water heater and back can then be secured by
the (primary) water heater pump.
The table below shows the nominal water flow data at a ∆T of 17K, plus the pump data of the
(optional) pump kit for each type of water heater.
Water flow data water heater
∆T Nominal
flow rate
Boiler
resistance
Pump type Voltage Curve
setting
Pump
head
Residual
pump head
[K] [m3/h] [kPa] [-] [V] [-] [kPa] [kPa]
TH-L/R40
50
17
2.4 14 TOP-Z30/7 RG 230 2 42 28
TH-L/R40
65
3.1 22 TOP-Z30/7 RG 230 2 36 14
TH-L/R40
85
4 40 TOP-Z30/10 RG 230 2 54 14
TH-L/R40
100
4.7 21 TOP-Z30/7 RG 230 3 32 11
TH-L/R40
120
5.6 30 TOP-Z30/10 RG 230 3 60 30
TH-L 145 /
R40-150
6.8 47 TOP-Z40/7 RG 230 3 53 6