Peerless boilers

Robert O'Connor

I had a Slant fin L-30 that the boiler rep looked at and said to change in Norway ME. It popped after shutdown.

The rep sent a new boiler and the new one did the same thing.

The boiler was vented both in the 3/4 tapping on top and at the airscoop.

When the second one popped on shut down , I installed a bypass and that helped. Wish the boiler rep had told me that.

regards

Robert

kevin

Peerless boilers

I have recently been on two diff. jobs where there are older Peerless JO(T) series boilers. Each job I was working on the plumbing not the heat. I did notice strange noises coming from the boilers. I sounded like there was knocking/poping from in side of the boiler as it was firing. One customer has complained about it.Other than sediment what could it be? Is this an indication that te boiler in on its last legs? Is flushing out the boiler with "sizzle" an option or just a risk at a boiler crack.It seem srange that in each case it was the same model boiler...kpc

Steamhead

I've run into this

there is probably an accumulation of sludge in the boiler. First flush it out (with the boiler COLD or you'll crack it) from top to bottom with a hose, do the wet returns too. What comes out will probably look like the birth of the universe.

Set the boiler up and run it again. If the problem persists, you will likely need to add some TSP, MEX or similar substance to the boiler and clean it as outlined in Lost Art.

If those boilers use gaskets, read the instruction sheets or contact your Peerless rep to see if chemicals or soaps will damage the gaskets.

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kevin

thanks ...

Steamhead....these are both hot water boilers....I would think there would be less sludge a closed system than an open steam system...kpc

Ben_3

Noise

It's probably build up from to much fresh water being introduced to the boiler. We call this percolating. Often times, especially in apt. bldgs. with baseboard heat or other set ups that we might power purge to remove air this is done all to frequently and build up starts, kinda sounds like when a wtr htr goes bad.

Dave Palmer

do

they have tankless' in them? We have had Weil/McLain 68's make that noise and it was the tankless. Just a thought.

kevin

both have..

the coils but have had the piping to them cut out and left open the the air long ago. I guess my real question is...is this a sign that the boiler is about to give up the ghost? I know that is not far from a, bring out the crystal ball type queston...kpc

Dave Palmer

Kevin

the ones we had the braces or brackets that wrap the coils were loose or broken. And made the noise. Just a thought,Dave

kevin

thanks dave..

sootmonkey

seen it often

see it to often. slant fin 30, peerless jot. my own slant fin sizzles for 30 secs. after shut down. i belive that there is a trapped pocket of air at the top of the boiler. i have tried everything to get rid of the noise. i lowered the aquastat settings. i raised the psi. i drained the boiler and refilled it. i manually flipped the relief valve lever. i still belive that the water in the boiler is going to steam, by the way the can vents are "chudding up". a customer of ours was having the same problem with his slant fin. slant fin replaced the boiler. i will be repipping my boiler this summer to pump away. see if that helps.

Robert O'Connor

Slant fin

I had a Slant fin L-30 that the boiler rep looked at and said to change in Norway ME. It popped after shutdown.

The rep sent a new boiler and the new one did the same thing.

The boiler was vented both in the 3/4 tapping on top and at the airscoop.

When the second one popped on shut down , I installed a bypass and that helped. Wish the boiler rep had told me that.

regards

Robert

[Deleted User]

Slant/Fin boiler

Since we are on this subject, here is a Slant/Fin gas boiler that cracked and was returned during the warranty period.

Sedement in a boiler can cause problems.

Noel

Robert O'Connor

Do

Do all Slant Fin boilers crack with such symetry?:)
That looks like the top of the boiler?

Seriously, Noel what about these Slant Fin l-30 boilers that perk when there brand new?

The most recent one I saw had a boiler feeder piped into the top 3/4 tapping and no air vent. Would a vent help?

The owner is going back on the builder . I think the builder bought it at HD and pluged and played.

My call was for a boiler that " blew up and blew a flame 5' out of barometric. Whatever happened it changed the consistency of the smoke pipe and discolored it. Hmmm.

Maine make s a lot of noise about oil burner licensing but there is still lots of un licensed practice.

[Deleted User]

L 30 and LD 30

There are some variables to look for, on these boilers.

Of course, pressure is the first one. See how the boiler pressure is effected by the circulators.

Temperature of the water entering the boiler is another factor.

Flow rate is the third factor. If the water flows so fast that the temp rise is low, the water may not flow evenly across all surfaces. Some surfaces do perk.

As in any cast iron, steel, or copper boiler, a bypass is a good idea so that you have a tool to use if the flow rates aren't just right.

The Liberty series is sensative to these things. If you find the cold fill pressure at 12 or 15 PSI, keep the return water under 200° F, 180 is better, and a flow rate that maintains a 20° rise across the boiler, you have a good chance of keeping this boiler from perking. Sedement is the unknown factor, in that case.

If you have a troublesome situation, and have questions (anyone), call here at the factory, at 800 873 4346, or 516 484 2610. We'll do our best to help.

Noel