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Replies: 11
Views: 803
Posted By HeatWorm

Ok. Duplicate Application Drawing A 260-2 [page...

Ok. Duplicate Application Drawing A 260-2 [page 3, pdf] ASAP!
Replies: 11
Views: 803
Posted By HeatWorm

Application Brochure Mar 2009 - Present ...

Application Brochure Mar 2009 - Present
http://tekmarcontrols.com/images/_literature/260_a_06.pdf

Installation & Operation Manual Mar 2009 - Present ...
Replies: 5
Views: 1,222
Posted By HeatWorm

See Thread: pump failures on hot water loop off...

See Thread: pump failures on hot water loop off steam boiler [by NJT]]...
Replies: 5
Views: 1,222
Posted By HeatWorm

See Thread: pump failures on hot water loop off...

See Thread: pump failures on hot water loop off steam boiler [by NJT]...
Replies: 8
Views: 2,164
Posted By HeatWorm

Read [page 21-23, pdf] A hydronic brain teaser. ...

Read [page 21-23, pdf] A hydronic brain teaser.
Next move the system pumps from the supply to the return, now the first radiator of zone #2 is hot, and if that is where the thermostat is located...
Replies: 8
Views: 2,164
Posted By HeatWorm

CounterPoint How Hydronic System Components...

CounterPoint How Hydronic System Components Really Work [pdf] (http://documentlibrary.xylemappliedwater.com/wp-content/blogs.dir/22/files/2012/07/fhd-501a.pdf)
TECHNICAL BROCHURE FHD-501A
[page...
Replies: 25
Views: 2,970
Posted By HeatWorm

The impeller is a couple of dollars and you only...

The impeller is a couple of dollars and you only know when you don't need it.
Replies: 25
Views: 2,970
Posted By HeatWorm

Bell &Gossett Series 100 pump repair

State Supply: Bell & Gossett Series 100 Repair [youtube] (https://www.youtube.com/watch?v=l5FRV4hseGQ)
Bell & Gossett 189134LF for bearing assembly with impeller or 118844LF w/o.
Replies: 7
Views: 1,433
Posted By HeatWorm

You do have a -- PREVENTIVE MAINTENANCE -- coil...

You do have a -- PREVENTIVE MAINTENANCE -- coil deliming schedule.
Replies: 36
Views: 1,870
Posted By HeatWorm

Caleffi Idronics16 January 2015: Circulation in...

Caleffi Idronics16 January 2015: Circulation in Hydronic Systems[PDF] (http://www.caleffi.com/sites/default/files/coll_attach_file/idronics_16_na_0.pdf)
[pp 29-31, pdf] Using a pump curve to...
Replies: 36
Views: 1,870
Posted By HeatWorm

In this case the boiler does, it has a dead space...

In this case the boiler does, it has a dead space that is above the level of the supply tapping where air can collect.

I think of a Tank as a receptacle, reservoir, repository to "trap" or store...
Replies: 36
Views: 1,870
Posted By HeatWorm

This is a air control system. 63329 ...

This is a air control system.

63329

Note, only some air separators have a large (3/4") top port to connect a compression tank.
And if you do one thing to the system:
Rule #1) Pump away from...
Replies: 36
Views: 1,870
Posted By HeatWorm

Hold on there, this boiler is using a top port to...

Hold on there, this boiler is using a top port to act as the system air separator/scoop for the compression tank.
A air separator (eg. Taco Vortech) would go on the supply riser/main not on the...
Replies: 36
Views: 1,870
Posted By HeatWorm

Yes, the boiler is the air separator.

Yes, the boiler is the air separator.
Replies: 16
Views: 1,292
Posted By HeatWorm

If I understand your system ( I don't ) there are...

If I understand your system ( I don't ) there are four circuits with 3/4" copper returns.
Circuit flow to move air in downward piping, for 3/4" Cu @ 2.0 feet/second = 3.2 GPM
System flow at pump: 4...
Replies: 36
Views: 1,870
Posted By HeatWorm

The temperature differential from room to room is...

The temperature differential from room to room is only relevant if measured with all registers open.

Add radiation to the basement by extending a return with bare element at ceiling.


A UPS...
Replies: 6
Views: 859
Posted By HeatWorm

Gerry Gill: washing out a steam boiler ...

Gerry Gill: washing out a steam boiler (https://www.youtube.com/watch?v=q1tw9rz-pUk)
Replies: 36
Views: 1,870
Posted By HeatWorm

No, not by its self. Moving the pump to the...

No, not by its self.

Moving the pump to the supply riser/main will help but does not address the uneven heat distribution. And low air separation efficiency, in addition to poor air transport...
Replies: 6
Views: 817
Posted By HeatWorm

No. CounterPoint How Hydronic System...

No.


CounterPoint How Hydronic System Components Really Work [pdf] (http://documentlibrary.xylemappliedwater.com/wp-content/blogs.dir/22/files/2012/07/fhd-501a.pdf)
TECHNICAL BROCHURE FHD-501A...
Replies: 12
Views: 2,571
Posted By HeatWorm

Thermostat connects to the boiler at the TT...

Thermostat connects to the boiler at the TT terminals in the aquastat.
The aquastat controls the burner not the thermostat.
The thermostat can not cause the boiler to overheat.
A residential...
Replies: 6
Views: 817
Posted By HeatWorm

idronics 5: Zoning Hydronic Systems [PDF]...

idronics 5: Zoning Hydronic Systems [PDF] (http://www.caleffi.com/sites/default/files/coll_attach_file/idronics_5_0.pdf)
[page 22, PDF] DIFFERENTIAL PRESSURE BYPASS VALVES
[page 23, PDF]...
Replies: 16
Views: 1,292
Posted By HeatWorm

If we start with a guess that heat loss will be...

If we start with a guess that heat loss will be less than 25BTU/sqft
1800 X 25 is 45,000 BTUH
installed radiation 61,200 - 73,200 BTU/HR (510 - 610 BTU/HR/FT)
Dunkirk PWB-5D output DOE 113,000...
Replies: 36
Views: 1,870
Posted By HeatWorm

Why is the pump on the boiler return, Old Manual....

Why is the pump on the boiler return, Old Manual.
see figure #5 PWB REV 3.0 IOM [PDF] (http://www.bhspares.co.uk/wp-content/themes/RevampV3/manuals/Dunkirk/PWB%20Rev.%203.0.pdf)

Some history: See...
Replies: 16
Views: 1,292
Posted By HeatWorm

Is the element 3/4" diameter. What is the...

Is the element 3/4" diameter.
What is the height of the opening from bottom of front cover to the top of floor/carpet.
Replies: 6
Views: 817
Posted By HeatWorm

Different pump curves, 007 9.5 ft of head at...

Different pump curves, 007 9.5 ft of head at shutoff -- zero flow.
You did save the Willow or you have the model number, yes.
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