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Calorifier storage temp check

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Sarah Gibson

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I work in a building with megaflow calorifiers and have to complete temperatures. How do I do this. Unit is sealed and no guages attached.

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About a quarter of the way up the tank here should be a small hole with a grey surround that you can insert a thermocouple probe into to get the tank temperature if there isn't a permanent one. I can't see it on the photo so it's probably around the back out of shot. Check the manufacturer's instructions.

You can use pipe clamps for flow and return. You can see the insulation damaged slightly where this has been done previously. The check sheet refers to the 'Maintenance Manager', if you're a subcontractor get them to approve your methods and equipment and calibration certificate. If you're direct labour employer should provide the thermometer and probes and necessary training.

The plumbing is not as I'd expect (no tundish below the PRV) but there may be something just out of shot. Also, not good practice to be using that cupboard to store cleaning equipment (mop seems to be leaning on relatively delicate pipework).
 
Last edited:
shopping

I think a kit like this is what you're looking for.
The flow and return temps required on the form you posted are Domestic Hot water temperatures.
Run a draw off (tap) and test the outlet pipe from the cylinder, top centre. It should be 60 degrees C or more. If there is a return (secondary circuit pump) that should be above 50 C at the inlet/return to the cylinder. The return connection can be separate or connected into the cold feed on some cylinders. I cannot see the connections properly on the photo. Is there a bronze or stainless steel pump on a pipe leading to the cylinder?
 
Definition of Calorifier:

A calorifier is an indirect-fired water heater to provide hot water in a heating and hot water system. Indirect fired means the water heater does not contain a burner. It is a storage water cylinder with one or more heat exchanger coils which contain hot liquids.

Some multi meters can measure temperature also.
If you're doing this work, it may be a worthwhile investment.
 

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