Boiler water temp.

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Old 12-20-10, 03:06 PM
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Boiler water temp.

The boiler is used primarily to heat the basement and a 1st floor bath. However, I cannot get it warm enough and the boiler water temp does not go beyond 140 deg. no matter what the aquastat setting. Any suggestions? could it be the aquastat?
 
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Old 12-20-10, 03:22 PM
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What make and model of boiler?

What is the pressure? Temp you said 140f.

What is the make and model aquastat?

Zone valves?

Could be Aquastat, could be gauge off, could be alot of things.

Pics are always good.

Mike NJ
 
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Old 12-20-10, 04:31 PM
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Maybe the thermostat is being satisfied and shutting the system down? Push it all the way up to a million degrees and see what happens.
 
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Old 12-22-10, 12:21 PM
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The thermostat isn't being at all satisfied and the circulator keeps running along with the boiler 24/7 and it doesn't go beyond 140 deg. Its a Crown boiler with 37k btu and a Honeywell aquastat L8148 E1257.
 
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Old 12-22-10, 12:29 PM
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Press= 12 psi
Honeywell aquastat, L8148 E1257
No zone valves.
Crown Boiler, AWI037SNS1PSU.
Water temp. was taken by a direct reading thermo.
Hot water heating system.
 
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Old 12-22-10, 05:16 PM
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How much baseboard/radiation do you have connected to the boiler ?

Is this a NEW installation that has NEVER worked properly? OR Is this an OLD installation that did at one time work properly?
 
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Old 12-22-10, 05:34 PM
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Just two 8ft run and a 3ft in the bath. It was working fine last winter. I'm getting heat, however, not as much as the previous season and the system has been bled. The stem is working, but not heating the water enough.
 
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Old 12-22-10, 07:45 PM
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the circulator keeps running along with the boiler 24/7 and it doesn't go beyond 140 deg.
I want to clarify one more thing... did you mean to say 'along with the BURNER 24/7' ?

So what you are saying is that as long as the thermostat is calling for heat, BOTH the circulator AND the burner will continue running and firing? The burner NEVER shuts off?

What does the flame look like?
 
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