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Tankless Coil
Alan (California Radiant) Forbes
Member Posts: 2,625
They aren't very popular out West and out of over 700 customers, I only have one that has a tankless coil in his boiler. It's a Crown G55 and I've been servicing it for about 15 years now; never a problem with his DHW until recently when the hot water will cool down when running any of the fixtures except the shower.. Any ideas for a solution.
As you might have gathered, I have no experience with a tankless coil.
As you might have gathered, I have no experience with a tankless coil.
0
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Comments
Monitor the outlet temp of the coil with different fixtures on, and if there is a thermostatic mixing valve watch that too.
More than likely since it doesnt happen when shower is being used, the shower, especially if its a cartridge type is bypassing cold water to the hot side because of a worn cartridge. It does that because the hot side has a lower pressure due to the tankless coil pressure drop.
I'll put my infrared thermometer to work and check the outlet temperature. What if the temperature fluctuates at the coil?
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