- Max flow
- 0.50 m³/h
- Head max
- 1 m
- Liquid temperature
- 0 .. 95 °C
- p max
- 10 bar
Save water and energy with the COMFORT circulator pumps
The COMFORT circulator pump range can make waiting for hot water a thing of the past for your customers. Delivering instant hot water to taps and showers, the COMFORT range cuts back on both energy and water consumption. Thanks to the inclusion of a return pipe, COMFORT canned rotor pumps are capable of providing hot water all over the building in an instant, thus eliminating the expensive and somewhat annoying wait for the water at the taps to get warm. Simply put, costs are reduced without compromising the comfort of getting instant hot water.
Get hot water recirculation the clever way
See how Grundfos COMFORT DT with digital timer control benefits your installation
Choose the best hot water recirculatory for you
Find out which COMFORT circulator pump suits your purposes best.
How can a blockage in a heating/wet-running pump be overcome?
De-energise the pump. Remove the screw in the centre of the nameplate. The shaft located beneath this has a groove. Place a screwdriver in the groove and move the shaft in the direction of rotation until you have removed the blockage.
Modern self-regulating heating pumps no longer have a screw in the centre of the nameplate. However, modern pumps have an anti-block feature. Should a blockage nevertheless occur, the pump head must be removed.
How does one read a pump curve of a heating pump?
The pump curve of a heating pump displays the feed rate on the x-axis and the delivery head on the y-axis. The pump curve shown in the graph is curved, dropping off from left to right.
Every possible duty point of the pump is shown on the pump curve where the dependencies are as follows: high feed rate = low delivery head; low feed rate = high delivery head.
In a heating system, a system curve emerges as a function of the system hydraulics. This curve intersects with the pump...
What is the heating system filling water requirement?
VDI Guideline 2035 Part 1 has been in effect since 2005, and VDI Guideline 2035 Part 2 has been in effect since 2009. These guidelines represent recognised rules of the technology. Ongoing technical advances as well as efficiency improvements and energy optimisation mean that modern heat generators and heating pumps are designed with lower tolerances than they were in the past. These technical advances have led to increased demands placed on the medium pumped in the system, as defined by ...
Why are the displays on the operating panel lit even though the electrical power supply is switched off?
Possible cause of fault
There is medium flowing through the pump and turning the impeller. This generates current, causing the display to illuminate.
These faults can only be remedied by a specialist company.
Why does the heating system not reach a sufficient temperature?
Possible cause of the fault
Automatic night set-back is active
The hydraulic conditions have changed. The pump must adapt to these.
When night set-back is activated
Switch on night set-back using Button 4 (for MAGNA, use Button 3).
In "AutoAdapt" mode
Possible cause of fault: The "AutoAdapt" function is unable to correctly adapt the heating system.
Why is the heating system making noise?
Possible cause of the fault
The flow rate is too high
This can be resolved by setting the pump to a setting other than "AutoAdapt"
Note the pump setting that appears on the display.
Then use Button 5 to switch the pump to "AutoAdapt". (for MAGNA, use Button 3)
If the supply of heat is sufficient at this point, leave it at this setting.
If the supply of heat is not sufficient, restore the previous setting...