Cetetherm Midi Wall IQHeat
Installation, service and operating instruction
27
Picture 18
10.3 Check heating circuit strainer
Service actions must be carried out by an authorized service technician.
Before starting out repairs always close the primary supply and return shutoff valves and drain the
system.
After finishing repair; open the shutoff valves. Start with primary supply and then the return lines,
to avoid pollutions in the system. Open the valves slowly to avoid pressure surges.
Do the same on the heating side open first heat return and then supply. Fill up the system, start
the pump and vent.
Disconnect the electrical power supply.
Release the strainer holder and remove the cartridge.
Clean the strainer in water and refit the cartridge. Screw the strainer
holder with a momentum of 10-20 Nm.
10.4 Check DHWC pump
Service actions must be carried out by an authorized service technician.
Disconnect the power feed to the pump by pulling off the connecter before carrying out this task.
If the current is on when you use a screwdriver to assist the pump to start, the screwdriver may
be wrenched out of your hand when the pump starts.
If the pump does not start, can it normally be started by removing the
pump motor end nut and helping the pump to start with the aid of a
screwdriver in the notch on the engine shaft.
If possible, use a short screwdriver. If the pump is difficult to access,
disconnect the heating actuator.
Connect the power feed to the pump and try to start again.
Picture 19
Summary of Contents for Midi Wall IQHeat
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