Radiant Manifold

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Phil May
Member
Posts: 194
Joined: Sun. Nov. 06, 2011 9:12 pm
Stoker Coal Boiler: EFM 700
Coal Size/Type: Buckwheat
Stove/Furnace Make: EFM
Stove/Furnace Model: 700
Location: Wellsville NY

Post Wed. Jan. 30, 2013 5:07 pm

I have an 8 loop stainless radiant manifold from pex supply. It has the valves and flow gauges. The only way I can get circulation is by backing the flow gauges out 3-4 turns. It worked fine untill a week ago. Is my pump taking a crap. I took one of the flow gauges out and examined it all looks fine. My pump is a 3 speed Grunfos 26-99 FC The pump is supposed to handle the head and flow on the low setting. I have been running it on high. The floor has 8-250' loops of 1/2" pex and less tha 10' of 1" copper to and from header. I have a b&g mixing valve. The loops flow unresrticted when I checked them. The flow gauges have not really worked good at all but they did flow for the first 2-3 weeks after install.

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Sting
Member
Posts: 2967
Joined: Mon. Feb. 25, 2008 4:24 pm
Other Heating: OBSO Lennox Pulse "Air Scorcher" burning NG
Location: Lower Fox Valley = Wisconsin

Post Wed. Jan. 30, 2013 5:46 pm

if the system is keeping the load - pump drama is unlikely

more likely the meter is for sizzel :)
When you turn your boiler on -Does it return the favor?
I have finally lost my mind. Don't bother to return it. It wasn't working properly anyway!

Phil May
Member
Posts: 194
Joined: Sun. Nov. 06, 2011 9:12 pm
Stoker Coal Boiler: EFM 700
Coal Size/Type: Buckwheat
Stove/Furnace Make: EFM
Stove/Furnace Model: 700
Location: Wellsville NY

Post Wed. Jan. 30, 2013 5:52 pm

you lost me

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Sting
Member
Posts: 2967
Joined: Mon. Feb. 25, 2008 4:24 pm
Other Heating: OBSO Lennox Pulse "Air Scorcher" burning NG
Location: Lower Fox Valley = Wisconsin

Post Wed. Jan. 30, 2013 5:58 pm

Sting wrote:if the system is keeping the load - pump drama is unlikely
Phil May wrote:The loops flow unresrticted when I checked them.
answer above due to statement above
Sting wrote:more likely the meter is for sizzel :)
[quote="Phil The flow gauges have not really worked good at all but they did flow for the first 2-3 weeks after install.[/quote]

BINGO
When you turn your boiler on -Does it return the favor?
I have finally lost my mind. Don't bother to return it. It wasn't working properly anyway!


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Rob R.
Site Moderator
Posts: 11366
Joined: Fri. Dec. 28, 2007 4:26 pm
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy
Location: Chazy, NY

Post Wed. Jan. 30, 2013 6:09 pm

The loops and pump are probably fine...those flow meters are notoriously inaccurate. If in doubt, measure the in/out temperature of the loops.

Phil May
Member
Posts: 194
Joined: Sun. Nov. 06, 2011 9:12 pm
Stoker Coal Boiler: EFM 700
Coal Size/Type: Buckwheat
Stove/Furnace Make: EFM
Stove/Furnace Model: 700
Location: Wellsville NY

Post Fri. Feb. 01, 2013 4:27 pm

Any reason that I have to turn them out to get flow? I did not think you were supposed to touch them.

Rigar
Member
Posts: 857
Joined: Tue. Dec. 04, 2012 6:30 am
Hot Air Coal Stoker Furnace: Keystoker A 150
Coal Size/Type: anthracite rice
Stove/Furnace Make: Keystoker
Stove/Furnace Model: A 150 warm air furnace
Location: central new york (syracuse area)

Post Fri. Feb. 01, 2013 7:37 pm

Sting wrote:if the system is keeping the load - pump drama is unlikely

more likely the meter is for sizzel :)
...ma nizzel. ??
....'Rigar

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