2 Features and benefits
TCGB0070 rev.3 - 04/2012
40
Three different pump motor speeds
In order to adapt the flow rate to the system requirements, there are available three pump motor speeds.
Viewed from A
Pump speed selection
Example of RWM-5.0FSN3E
Static pressure
V
3
V
2
V
1
Water flow
N O T E
V: Pump motor speed (V
1
: Low, V
2
: Medium, V
3
: High)
Electric heater
Complementary heating for the most low ambient temperature conditions
For the most low ambient temperature conditions, the electric heater will be enabled in order to provide the necessary
supplementary heating, doing possible the performance in a biggest working temperature range.
Electric heater
Three steps electric heater
The desired heating supplied can be more exactly provided by means of the 3 steps electric heater control. When a con-
tactor receives the signal and close it, an electrical resistance is activated, resulting in one step heater power.
When the electric heater is working in steps 1 or 2, the power input will be reduced comparing with the total power input
of the electric heater.
The following table shows the state of each step:
Step
Total power (kW)
RWM-(2.0/3.0)(H)FSN3E
RWM-(4.0-6.0)(H)FSN3E
RWM-(8.0/10.0)(H)FSN3E
0
0.0
0.0
0.0
1
1.0
2.0
3.0
2
2.0
4.0
6.0
3
3.0
6.0
9.0
N O T E
For more details, please refer to the section
Control features
in this chapter.
