It is normal practice to install an additional pump for the heating system, if there are warm floors, or when the heating circuit is large enough.
The pump in the AGV boiler may not be sufficient and a power calculation is required in each case.
In this case, a separate Wilo pump is installed for the warm floor in the area of the comb
Warm floor pump wilo
The pump was not turned on for about two years, but the heating was working, respectively when it was turned on it was just a gull, but it was not started.
I do not have skills and experience in the heating system, but I have straight hands and tools, as the pump gags, accordingly it cannot start, we will try to disassemble.
Here by inexperience I leaked water from the whole system, although in all years it is worth updating it.
Turn the gate valve using special wrench
Drain water at the bottom point
But a little later I raised that it is enough to close the gate valves to the waters and the outlet from the pump
Pump water gate valves
The pump itself is fixed by two bolts under the hexagon, which is the same key
Pump is removed
Pump impeller and pump seal ring Wilo, all very convenient
Pump impeller and sealing ring
Pump yoke and sealing ring
Unscrew impeller blanking
From the downtime and "red" water there was an build-up in the impeller and the motor lacked the power to start the rotor.
Wash with water and twist the impeller, after a while it rotates quietly
Rotating part of Wilo pump
We collect the pump back, but it just got worse here,
Wilo pump on warm floor comb
Called with the help of a tester, it became clear that there was no electricity, there was a problem after the miracle of electrician Oleg.
The jumper was turned over and the voltage appeared
Now everything is all right, the pump has started, we open the gate valves and let the air out of the system, it doesn 't even hit
Air discharge valve
Initially there was speculation that the problem was in the condenser, just in case photo box pump Wilo