Search: Posts Made By: doughess
Showing results 1 to 25 of 200
Search took 0.04 seconds.
08-10-19, 04:51 PM
Replies: 17
Views: 385
Posted By doughess

Except on design condition days, conventional...

Except on design condition days, conventional AC's and heating systems are over sized for lesser conditions.

Anyone who has designed systems to maintain specific temperature and humidity control...
08-10-19, 07:57 AM
Replies: 18
Views: 421
Posted By doughess

As benchmark for HVAC pricing I use the Taco...

As benchmark for HVAC pricing I use the Taco 007-f5 circulator pump price.
https://www.supplyhouse.com/Taco-007-F5-007-Cast-Iron-Circulator-1-25-HP-1983000-p

SupplyHouse.com is $90, HomeDepot...
Replies: 5
Views: 240
Posted By doughess

My 1957-McLain Model 57 with original tankless...

My 1957-McLain Model 57 with original tankless coil has zero issues. Now has fourth burner, a Beckett AFG. Hope it is still running after I am gone.
08-09-19, 11:01 AM
Replies: 17
Views: 385
Posted By doughess

My post #13 was how this DIYer deals with things....

My post #13 was how this DIYer deals with things. Since this forum does not allow mention of some common diagnostic tools it described an alternative way of gathering helpful data.

There are...
08-06-19, 06:45 PM
Replies: 17
Views: 385
Posted By doughess

Easy and most accurate way to determine air...

Easy and most accurate way to determine air condition load is to gather basic data on existing unit run time. Wire hour meter into AC compressor circuit. Find run time for x hours at y temperature....
08-06-19, 04:08 PM
Replies: 18
Views: 421
Posted By doughess

With today's overnight and quick shipping the...

With today's overnight and quick shipping the need for local supplier had largely gone away.

As a price reference I use HomeDepot. For years have used www.supplyhouse.com...
07-24-19, 06:58 PM
Replies: 5
Views: 311
Posted By doughess

smbaz is trying to control 3 circuits, heating,...

smbaz is trying to control 3 circuits, heating, AC and fan with one thermostat switch.

Get a modern programmable heating/cooling thermostat. I bought a spare on ebay last month for $16. ...
07-24-19, 12:12 PM
Replies: 5
Views: 311
Posted By doughess

If you have modern electronic thermostat use the...

If you have modern electronic thermostat use the wiring diagram for it. A typical heating/cooling thermostat wiring diagram shows how things are connected.

There are common terminal designations...
Replies: 7
Views: 699
Posted By doughess

$1600 to replace circuit boards on Rheem boiler...

$1600 to replace circuit boards on Rheem boiler sounded crazy. Did a web search and found all Rheem boards priced under $400. On www.supplyhouse.com there is way to find match board to specific ...
07-16-19, 02:26 PM
Replies: 21
Views: 640
Posted By doughess

No, hard starts are not one side fits all. Many...

No, hard starts are not one side fits all. Many 120 or 240 VAC AC's can use a common generic one. BUT there are situations where finding the right motor capacitor and hard start can be challenging....
07-12-19, 08:07 PM
Replies: 21
Views: 640
Posted By doughess

I do not trust service people, especially when...

I do not trust service people, especially when they can make thousands of dollars on a deal. Still would do a $10 reality check.


Warranties can be very difficult to collect on. In most cases...
07-12-19, 08:12 AM
Replies: 21
Views: 640
Posted By doughess

Am DYIer, a paper pusher, not mechanic. Replaced...

Am DYIer, a paper pusher, not mechanic. Replaced my 3 ton R22 outside unit 25 years ago. Still nursing the 50 year old AC attic unit. Have basic tools, vacuum pump from old refrigerator, and can...
Replies: 7
Views: 699
Posted By doughess

It would be a great help if pictures were...

It would be a great help if pictures were provided of "2 tank less water systems" and other parts of system, i.e. boiler?
07-11-19, 02:12 PM
Replies: 21
Views: 640
Posted By doughess

If there are marginal issues that preclude start...

If there are marginal issues that preclude start even with correct capacitor then a hard start might make the difference. For $10 it is worth the try. Even on well running systems hard starts can...
07-11-19, 08:22 AM
Replies: 21
Views: 640
Posted By doughess

AC Motor Start Boost Insurance

Problems with AC compressor starting are a common issue. While there are many causes for the problem, there is a device commonly called “hard start” that can be a big help in many installations. ...
Replies: 14
Views: 1,768
Posted By doughess

First define aquastat: a device used in hydronic...

First define aquastat: a device used in hydronic heating systems for controlling water temperature. In simplest terms a temperature activated switch with two contacts typically unlabeled.

Next...
Replies: 16
Views: 1,049
Posted By doughess

Could there be a spark, ignition or timing issue...

Could there be a spark, ignition or timing issue here?

I have 1/16" hole drilled in air cleaner to spray starting fluid in. Even if gasoline is issue, engine should still kick.

Mine uses...
Replies: 14
Views: 1,768
Posted By doughess

This was not a judgment call but a matter of...

This was not a judgment call but a matter of fact. Connecting the boiler TT terminals activates the boiler.

Yes, other units on heating system can have TT terminals. Sometimes they are wired in...
Replies: 14
Views: 1,768
Posted By doughess

Spott is wrong. Zone valve end switches should...

Spott is wrong. Zone valve end switches should activate circulator not burner. Except for cold start, hydronic system burners are controlled by boiler aquastat, not room thermostats.

Some zone...
Replies: 14
Views: 1,768
Posted By doughess

MJH can use thermostats to open zone valves and...

MJH can use thermostats to open zone valves and their end switches to activate circulator.

I have 8 zones where valve switches activate circulator relay. You do not need zone controller.

Had...
Replies: 10
Views: 1,271
Posted By doughess

Good hydronic design is to enable isolation of a...

Good hydronic design is to enable isolation of a zone during heating season. Then entire heating system does not have to be shut down for issue with one zone. Think of it as "worst case design."
...
Replies: 15
Views: 570
Posted By doughess

For the summer set Tekmar boiler target temp to...

For the summer set Tekmar boiler target temp to 140F and differential to 5F. That will fire burner at 135F and shut it off at 140F.

In winter do not use Tekmar 260 AD "auto differential"...
04-21-19, 11:55 AM
Replies: 24
Views: 579
Posted By doughess

A major benefit of sub panels is reducing the...

A major benefit of sub panels is reducing the lengths of home runs to main panel and providing a nearby local panel for many circuits.

Many year ago needed 50 amp circuit in garage, in split...
Replies: 7
Views: 368
Posted By doughess

There are several possible reasons why my system...

There are several possible reasons why my system pressure tends to increment. It is high mass with 30 gallons of water and 7.4 gallon diaphragm expansion tank, 13 heating elements are fed from 280...
Replies: 7
Views: 368
Posted By doughess

Other points in this endless debate: One ...

Other points in this endless debate:

One rationale to keep fill valve open on hydronics systems is to prevent explosion if water level in boiler fell making it a steam system.

Out-door-reset...
Showing results 1 to 25 of 200
 


 
Forum Jump