I have too much expansion causing my tank in roof to over flow.how do i reduce this ?

Question

my boiler was moved into the garrage.I did have this problem before it was moved .I know the system needs to reduce water presure when heated but I need to stop my tanks overflowing.is there a easy fix any adice welcome thanks.

Answer 1

try turning the water pump setting down.If this doesn't stop it, then the boiler thermostat is most probanly faulty.

Answer 2

if you are in the USA then you need to drain some water from the boiler, then check the feed water valve, (pressure reducing valve ) to see if it is leaking thu and constantly feeding water to the boiler. you can test this by marking the pressure gauge where the pressure is after you drain the boiler down some, (but still above the normal operating pressure ) and see if the pressure goes up after about 20 Min's.Usually here in USA there is an overflow pipe that goes back to basement to a drain. Also you said that the system needs to reduce water pressure when heated,,,,, actually the system keeps the pressure from rising when heated. Hope this helps,,, good luck to you.

Answer 3

Sounds like it's 'pumping over', try reducing the pump speed, otherwise there's a possibility that the pump has been fitted the wrong way round and is pumping up the expansion pipe. Or the flow and returns have been crossed over in the move to the garage, same result!!

Answer 4

This occurs because the float arm is TOO high.
The float arm in a CH tank should be as low as possible, in practice I have seen them with just a wet bottom (sore)
Seriously, lower the float arm as much as you can.
You might have to buy a new tank, if you are worried by the overflow
I have noticed that you said overflowing, did you mean that there is hot water entering your tank ? if so reduce pump pressure.

Answer 5

iF IT'S AN OIL FIRED BOILER YOU CAN ADJUST THE WATER CIRCULATING PUMP BY TURNING THE ADJUSTING KNOB FROM 3 (MAX ) TO 1 (MIN) THEREBY REDUCING THE WATER FLOW.GAS FIRED BOILER MAY HAVE THE SAME FACILITY. THE FLOW PUMP IS USUALLY FITTED TO THE RETURN LINE SOMETIMES IN THE AIRING CUBBARD OR SOMETIMES ADJACENT TO THE BOILER.THE PUMP IS USUALLY ROUND IN SHAPE AND A SLIGHT WHIRRING NOISE CAN BE HEARD WHEN THE PUMP IS RUNNING.nOTHER FIX IS TO RAISE THE OVERFLOW PIPE BY AFFIXING A RUBBER HOSE TO IT WHERE IT ENTERS THE TANK AND CLIPPING THE RUBBER HOSE TO THE RAFTERS.USUALLY 10 OR 20 INCHES OF HOSE IS SUFFICIENT

Answer 6

I agree with litpooo. Adjusting the ballcock drops the water level in the header tank. [I am, of course assuming that you are in Ireland or Britain? cause I know nothing about stateside systems]

Yup! Man We have em bet!

Answer 7

there should be an adjusting screw on the ballcock to check the water level

Answer 8

adjust your ballvalve, bend the arm slightly

Answer 9

move the ball **** down
blimey c.o.c.k isent a swear word

thanks espacer