Magnet filter and boiler water treatment

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bozman

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Need advice
current setup:
2016 Burnham Alpine 210B
mix of split fin and cast iron baseboard
amtrol extrol EX-30 (undersized)
burn ham alliance 50 gal hot water tank
5 zones and 6th for hot water tank
Water softener and carbon filter tank

I received a quote to replace the expansion tank because its undersized and has been leaking as well. The plumber also recommended a magnet filter and Spiro vent and several other recommendations.

Spirovent- $599 (part and labor)

#90 expansion tank- $572.00 (part and labor)

Magnet filter – $489.00 (part and labor). Do I need this?

Isolation valve- $224.00 (part and labor). Do I need this?

Boiler water treatment - $305.00 (part and labor). Do I need this?

I am ready to do the tank and spirovent but unsure of the others, any thoughts? If I get the Manet filter will I then need to call the plumber every time to clean it potentially? If it's just a matter of isolating it and flushing the filter out I could probably do that

Thanks
 

Fitter30

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Take a few pictures of the boiler and surrounding piping just don't get to close to see how its piped. Where is the expansion tank leaking?
 

bozman

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Take a few pictures of the boiler and surrounding piping just don't get to close to see how its piped. Where is the expansion tank leaking?
what I meant by leaking is that its just coming out of the air vent that's connected to the expansion tank

boiler.jpg
 

Fitter30

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Looking at the tridicator gauge left of boiler it shows pressure and temperature. Does the water pressure vary with the water temperature more that a few pounds ad what are the readings? Has the system have any air problems like hear air noise in the pipkng?
 

bozman

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no air noise...only have one zone that is on now since it's not that cold out and it doesn't look like there is a big fluctuation in pressure when the temp goes up. When the system is running full boar no leaking, it's when it's warm out and not running that it starts dripping out mostly. But it happens often enough that it rusted everything below the vent.
 

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Fitter30

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Most residential systems run at 10-12 lbs for a one to two story house. With all pumps off pressure is measured. 2.31' per pound, 10 lbs 23.1' of height. From the bottom of the boiler to the top of piping. So whatever the height is add 3-4 lbs is more than enough water in system. Expansion tank has a bladder in it that has a air charge access is under the plastic cap at the bottom. With a cool system under 100° pumps off measured pressure should be with in a lb of system pressure measured with a 0-50 lb tire gauge and pressure can be added with a tire pump. The pics of the tridicator water temp increased 30° pressure 2lbs. Without adjusting system pressure and checking ex tank pressure doesn't seem out of the ordinary. If the boiler pressure was opening the relief valve then there's a problem. The green fitting that the ex tank is screwed into is a air scoop and the devise that is leaking is a air vent that is replaceable. Spiro vent is a better devise for removing air but since your not having any problem i wouldn't change it. Mag filter ( related valves for service) and especially the treatment. Treatment, air vent and mag filter can be added without draining the complete system if the valves hold.
 
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bozman

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Most residential systems run at 10-12 lbs for a one to two story house. With all pumps off pressure is measured. 2.31' per pound, 10 lbs 23.1' of height. From the bottom of the boiler to the top of piping. So whatever the height is add 3-4 lbs is more than enough water in system. Expansion tank has a bladder in it that has a air charge access is under the plastic cap at the bottom. With a cool system under 100° pumps off measured pressure should be with in a lb of system pressure measured with a 0-50 lb tire gauge and pressure can be added with a tire pump. The pics of the tridicator water temp increased 30° pressure 2lbs. Without adjusting system pressure and checking ex tank pressure doesn't seem out of the ordinary. If the boiler pressure was opening the relief valve then there's a problem. The green fitting that the ex tank is screwed into is a air scoop and the devise that is leaking is a air vent that is replaceable. Spiro vent is a better devise for removing air but since your not having any problem i wouldn't change it. Mag filter ( related valves for service) and especially the treatment. Treatment, air vent and mag filter can be added without draining the complete system if the valves hold.
thank you for the detailed explanation!
 
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