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How to adjust temp. range on aquastat L4103? - Honeywell Heating & Cooling

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Posted on Jan 02, 2017

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SOURCE: My L4103 aquastat is set

phl4103-3.jpg on the left side of the dial will be a little metal arrow that will not move when the dial moves, this is the set point. set the temp. you want at this point.

Posted on Dec 17, 2010

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1 Answer

How do I disable low limit


WHY???????????????????
Only common sense option is to remove the Aquastat as you can adjust the lower limit down but NOT disable it. Bigger question may be What are you trying to do and do you know what you are doing???
Aquastats are made to START and STOP Pumps in Recirculation systems at settable limits not run them 24/7.
Running a pump 24/7 voids the heater warranty.

Sep 11, 2014 | Honeywell L8124a 1007 Triple Aquastat...

1 Answer

Where do i adjust boiler temp on a gas fired boiler


difficult to say just where the temperature control is on your system. it will likely be an immersion type control located some on or near the boiler. it should have a temperature range scale on it.

Jan 25, 2013 | Heating & Cooling

1 Answer

Want to raise the water temp


Stand alone water heaters have temperature controls in different locations.

11_23_2012_12_50_47_pm.jpg
Most residential electric water heaters operate on 240 volts. Please, shut off power first whenever you need open or remove panels for adjustments or servicing.

"Traditional" electric water heaters have them behind removable panels - like the top and bottom gray panel on the water heaters on the right side of the photo. Both panels have adjustable controls behind them and both should be adjusted to the same setting.

Some newer electric water heaters use electronic controls. These may be accessible without removing panels and even have digital displays. Others have controls that are located on the top of the heater - behind a panel. Electronically controlled water heaters may or may not need to be powered on when making adjustments. Check your manual if in doubt.

Gas (propane & natural gas) type water heaters have the temperature control on the gas valve. There are often two controls on the valve, one for the pilot (off, light and on positions) and a second for temperature adjustment.

A tankless water heater built into your home's furnace is controlled by an "aquastat". An aquastat is a fancy term for a thermostat to control water temperature. A typical aquastat is mounted directly on or very near the furnace and looks like this:

11_23_2012_1_08_47_pm.jpg
Inside, are several temperature settings. Here's a photo of the interior of the Honeywell aquastat:


11_23_2012_1_12_16_pm.jpg
The Hi dial should never be set to a value lower than the Lo dial. "Safe" settings are Hi = 180, Lo = 160 and Diferential (above "Lo") = 10. You'll need to tweak these up a bit to make water hotter. You should read more about settings for these aquastats here. Skip down to the section titled "What Settings To Use on a Heating Boiler Aquastat Combination Control"

I hope this helps & good luck!

Nov 22, 2012 | General Electric GE SmartWater Household...

1 Answer

Is it possible to lower the top temperature on the thermostate. I can change the lower temp but not the max which I wish to set below the 180 level. Thanks


there is a high and a low limit on these units, the two control knobs are actually the reverse of what you are trying to accomblish,first lower the bottom or low cut off temp first then the high temp ,it must cycle a couple times for it to adjust

Jun 06, 2011 | Honeywell L4103A1019 combination aquastat....

1 Answer

My L4103 aquastat is set too hot, it does not clearly stat temps on set dial which way do i turn it to lesson temp


phl4103-3.jpg on the left side of the dial will be a little metal arrow that will not move when the dial moves, this is the set point. set the temp. you want at this point.

Dec 17, 2010 | Honeywell Heating & Cooling

1 Answer

Looking for simple wiring diagram to wire ******** aquastat


What are you fanning??? the fire?

Do you have a circulator that circulates when the water is up? Many controls have a AUX connection ... wire the AUX to your fan --- alaternatively, wire directly fron your circulator connection to the fan.

I hope I understood your question ...

Let me know what happens.

a

Oct 16, 2009 | Honeywell International Honeywell&...

1 Answer

My john wood hot water tank over flows through the relief valve every 3 - 6 months. The hot water is too hot and I can't seem to adjust the Aquastat L4103 on the hot water heater to a good temperature....


There should be plate on the front of the hot water heater tank.. Pop that off..
There might be some insilation to move and you should see a set screw for adjusting the temp..
If there are no indications for hotter or cooler - then do a 1/8 turn to a 1/4 turn counter clockwise..

Hope this helps !I
rate me good ;o)

Jul 14, 2009 | Honeywell Heat/Cool Thermostat

1 Answer

I want to increase the boiler temp by using the your aquastat


Warning! Can cause electrical shock! Here is the instruction manual
for L7248c
http://customer.honeywell.com/techlit/pdf/PackedLit/68-0281.pdf

Jan 12, 2009 | Water Heaters

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