Search: Posts Made By: jnordby1
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Replies: 49
Views: 14,859
Posted By jnordby1

Thinking the same thing, but the last run of wire...

Thinking the same thing, but the last run of wire is inside the boiler box when the burnham case is on. I may run the conduit outside somehow and keep very little of the valve control wire inside...
Replies: 49
Views: 14,859
Posted By jnordby1

Apologies, but it was sure nice to see/hear that...

Apologies, but it was sure nice to see/hear that valve open.

Fuse in the a'stat blew for sure because the old wire to the valve was shorted, I sure think. Why the valve ohms buzz out gradually is...
Replies: 49
Views: 14,859
Posted By jnordby1

FIRE! 3amp fuse, from the high limit to b1,...

FIRE!

3amp fuse, from the high limit to b1, and a replaced wire to the valve. Double loop on the b1 wire only (I did know that, but gentle reminders are always good!) showed 1.1A draw, so right...
Replies: 49
Views: 14,859
Posted By jnordby1

Replaced the batteries in the meter, same...

Replaced the batteries in the meter, same behavior, shows 0.00, but climbs to 10.7 ohms in about 8 seconds.

I'm thinking for grins I'll at least fuse the a'stat, replace the melted wire from the...
Replies: 49
Views: 14,859
Posted By jnordby1

I have to sign off. Need to be at a meeting in...

I have to sign off. Need to be at a meeting in 10 minutes. Thanks so muh.
Replies: 49
Views: 14,859
Posted By jnordby1

zero ohms on the valve when I first touch, and...

zero ohms on the valve when I first touch, and for 3 sec. Then it climbs up from there (Craftsman, 82369 ac/dc clamp meter). This means bad valve, correct?

Yep, you mentioned the 200, I'll set it...
Replies: 49
Views: 14,859
Posted By jnordby1

Valve shows continuity. Wire says fire...

Valve shows continuity.

Wire says fire resistant, 105 C rated.

The part that melted appeared to be inside the firebox, where the conduit ended..

Guess I need to be pretty careful when firing...
Replies: 49
Views: 14,859
Posted By jnordby1

Thanks so much. The help was invaluable NJ...

Thanks so much. The help was invaluable NJ Trooper. Looks like a valve swap (I can do that, my brother does ac for walmart and a valve swap is in his abilities if I cannot). Also looks like an...
Replies: 49
Views: 14,859
Posted By jnordby1

Genious. The wire was in conduit, couldn't...

Genious.

The wire was in conduit, couldn't see it. I pulled it out to inspect. Melted in a spot, and shows continuity in the wire when I check across them (and am sure they are not touching on...
Replies: 49
Views: 14,859
Posted By jnordby1

Power off to the a'stat. All wires connected...

Power off to the a'stat. All wires connected B1/B2 to the valve. I have continuity across TH and TR (the outer posts on the valve, as shown in the photos).

I bet I don't like the answer - I was...
Replies: 49
Views: 14,859
Posted By jnordby1

So, power is back on to the a'stat, call for...

So, power is back on to the a'stat, call for heat, relay tripped, circulator running, nothing on b1 b2.
With a lead on b2, and testing both sides of the high-limit switch, I do get 24v.

To...
Replies: 49
Views: 14,859
Posted By jnordby1

Sorry for the delay. I failed the under 40 test,...

Sorry for the delay. I failed the under 40 test, had to round up a mag glass to see them.

Yes, pin 3 is upper right as I look at the a'stat side of the plug. And pin 5 is middle, bottom row. It...
Replies: 49
Views: 14,859
Posted By jnordby1

Jumper is across pins 2 and 3, again assuming 2...

Jumper is across pins 2 and 3, again assuming 2 is middle pin upper row. 3 is far right, upper row. I am looking for a pinout diagram but don't see one.
Replies: 49
Views: 14,859
Posted By jnordby1

Guessing that #3 is top right of the plug on the...

Guessing that #3 is top right of the plug on the a'stat, and pin 5 is middle lower, there is some continuity, but the resistance is quite high. It does set the meter off "open", but not like if I...
Replies: 49
Views: 14,859
Posted By jnordby1

Jumpered, and using a t-stat call for heat, the...

Jumpered, and using a t-stat call for heat, the relay definitely pulls in.

Visually the jumper from W to Z is in place.

Circ pump starts and runs.

The voltage measure is what I am not sure...
Replies: 49
Views: 14,859
Posted By jnordby1

Boiler pictures by jnordby - Photobucket...

Boiler pictures by jnordby - Photobucket (http://s743.photobucket.com/albums/xx79/jnordby/Boiler/)

For some pictures of the a'stat, valve, and boiler plate.
Replies: 49
Views: 14,859
Posted By jnordby1

Honeywell aquastat: L8148e1257. This is the new...

Honeywell aquastat: L8148e1257. This is the new one. The original, 20 years old, is an L8148e, but the only numbers I see on it are "8703" on the circuit board and 8701 123726 on the high limit...
Replies: 49
Views: 14,859
Posted By jnordby1

ANS - ansi - Apologies, I should have caught...

ANS - ansi - Apologies, I should have caught that.

I'll take another look at the boiler data plate when I get back in front of it (5pm MDT), had to get off to work. I do have the valve info:
...
Replies: 49
Views: 14,859
Posted By jnordby1

Thanks. Evening is good. Running to work (late!)...

Thanks. Evening is good. Running to work (late!) myself. My confusion is still around b1 and b2, and what are correct values there during open t-stat and closed t-stat. I do suspect the valve...
Replies: 49
Views: 14,859
Posted By jnordby1

Correction, I get the 9v kind of readings when I...

Correction, I get the 9v kind of readings when I ground one side of my meter to copper pipe, and the other to the 24v circuit. Grounding to the 24v circuit, I get 24v.

So, I have TV and T...
Replies: 49
Views: 14,859
Posted By jnordby1

Apologies, I was watching for email from a reply...

Apologies, I was watching for email from a reply to this, and should have simply bookmarked the thread. My bad - watching the thread now, thanks for the response.

The boiler is a Burnham...
Replies: 49
Views: 14,859
Posted By jnordby1

Request for advice troubleshooting an L8148E

Winter blew into the Front Range of Colorado yesterday, so I broke down and lit the pilot on the old Burnham controlled by an L8148E Honeywell Aquastat.

Pilot held fire, I turned the valve to the...
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