Heating system control FAQs:

Questions and answers about any and all controls used on heating boilers used for providing heat or hot water in buildings.

This article series describes the operating and safety controls on a Heating System Boiler - central heating systems. The photo at page top shows a modern cad cell relay on an oil fired heating boiler - one of the safety controls which we discuss in this article.

Heating Boiler Control FAQs

Tyese questions & answers about heating boiler controls were posted originally

at BOILER CONTROLS & SWITCHES - home - where you will find a complete dictionary and list of those devices.

These FAQs and this article series describes the controls used on hot water type heating systems, also known as hydronic heating systems.

Hot water heat is provided to a building by a heating boiler that heats hot water that in turn circulates through heat radiating devices in the building.

I have to keep hitting the red button to turn my Columbia Oil Boiler back on

I have a Columbia oil boiler and the boiler goes on for a few minute then it goes off and I have to keep hitting the red button to turn it back on but the boiler only stays on for a few minute. There's oil in the tank. On 2019-01-20 by Anna

by (mod) don't keep pressing the reset button

Anna

Watch out: Do not keep pressing the reset button - you risk a dangerous PUFFBACK EXPLOSION - instead, call your heating company to repair, or clean and service the system to get it running reliably.

Details are at OIL BURNER SOOT & PUFFBACKS

I suspect that your heating system needs cleaning or service, or perhaps simply a replacement of the flame sensor or cad cell eye.

Other more subtle failures can occur such as an overheating transformer that takes time get hot, or even a simple loose wire connection.

 

Can I bypass the motorized flue damper switch so that the boiler will turn on?

I’m a service man. I have a gas boiler with an motorized Damper. I changed it 3 times and it opened but not it's not making the switch for the boiler to come o.

Ccan it be bypassed and if so how? On 2019-01-18 by Jeff

by (mod) - Watch out: dangers of disconnecting an automatic flue damper

Jeff

If you're sure that the only role of the damper is to close to stop heat loss at the end of a heat on cycle then you could certainly remove it entirely or it may be possible to disconnect the drive motor and then put the damper in the fully open position.

Watch out however because if you disconnect the damper from the drive motor and move it manually to open you need to be sure that it won't accidentally close on its own.

If the damper closes without the electrical hook-up (that would turn off the burner) the danger is production of fatal carbon monoxide which of course as we both know could kill everyone in the house.

For that reason I would feel safest if it were removed entirely and replaced with a section of straight flue pipe.

I have power to the reset but nothing happens when the button is pushed.

I'm installing a used forced air furnace. I have power to the reset but nothing happens when button is pushed.

It is a beckett oil Burnett model ah-667039 and a Honeywell reset mod # R 8184 G 1302.

Looking for help getting it running. On 2018-12-07 by Randy - I

by (mod) - check the cad cell eye

Have you checked the cad cell to make sure that it's clean or new and that there are no shorts in the wiring?

When you press the "reset" button on any heating control device, the button should stay down and the device should reset. If the button doesn't stay down the you're pressing the button too soon (the unit could be hot) OR there's a wiring or power or another control error.

Who do I get to fix my room thermostat when it wont' turn on the heater - an electrician or a boiler service tech?

The connection from the thermostat to the boiler is not working. Who fixes the thermostat in the house wired to the boiler gas heater radiator system. An electrician or the boiler service tech? On 2017-11-03 by Sylvia. Brooks

Reply by (mod) -

Sylvia

Usually your heating service technician OR an electrician can repair a thermostat wiring problem.

I would start with the heating service tech since if you call an electrician and she finds that the thermostat and its wiring are perfectly fine then she'll just have to point you to your heating company to find and fix a problem with a heating control or system.

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Continue reading at BOILER CONTROLS & SWITCHES - topic home, or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX.

Or see these

Recommended Articles

• BOILER CONTROLS & SWITCHES
• STEAM HEATING SYSTEMS & CONTROLS

Suggested citation for this web page

BOILER CONTROL & SWITCH FAQs-2 at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.

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INDEX to RELATED ARTICLES: ARTICLE INDEX to HEATING BOILERS

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