Rendimax N EL
14
1, 2, 3 =
Positions of the switch on the pump
7.04 characteristics of the pump built into the boiler
(models 16 -23 - 30 pv)
The discharge head and the flow-rate can be adjusted on the pump using the speed selector switch on the pump
itself.
7.05 adjusting the thermal head (
∆
t) of the heating system
(models 16-23-30 pv)
The difference between the supply and return temperature in the central heating system can be adjusted using the
speed selector switch on the pump. In this way, the flow-rate and discharge head of the pump itself are adjusted.
Increasing the rpm of the pump, the
∆
t decreases, and vice-versa.
Warning
A difference between supply and return temperature of over 20°c may endanger the boiler due to
condensation; a lower
∆
t value is thus recommended.
fig. 5
Flow-rate Q (m
3
/h)
Discharge head h (m)
