Paul Hovnanian P.E. wrote:
> Homer J Simpson wrote:
>
>>"2007 May" wrote in message
>>news:465f8c02$1$31566$6d36acad@fe2.nntpserver.com...
>>
>>
>>>The left knob selects "fire power intensity" - small flame at left to
>>>large flame at right.
>>>
>>>The middle smaller knob selects "seasons" - points to "summer - in blue -
>>>right" and "winter - in red - left". Wonder what it really does?
>>>
>>>The right knob selects "water temperature" from small at left to large at
>>>right.
>>
>>Seems all three control the temperature. Perhaps one controls the water
>>flow?
>
>
> Possibly the maximum allowed flow. If the inlet water is cooler in the
> winter, the demand heater might not be able to heat it up to the same
> temperature as it could with warmer (summer) inlt water.
>
Why would you expect much change in inlet water temperature. The major
pipes are usually not very close to the surface.
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