Tankless Water Heater without pilot [RE-wrenches]
Matt Tritt
solarone at charter.net
Thu Oct 28 13:14:49 PDT 2004
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Oh great; another freakin' letter that, if I don't send to someone within
five minutes, will give 10 years bad luck!
Maybe I should have actually sent those chain letters back in '69?
----- Original Message -----
From: "Scott Crawford" <crawfordscot at gmail.com>
To: <RE-wrenches at topica.com>
Sent: Wednesday, October 27, 2004 9:35 AM
Subject: Tankless Water Heater without pilot [RE-wrenches]
> The Noritz will work like the Takagi and is very similar.
> Not sure who spun-off from who. We have never used one.
> Both need 120Vac and are power vented
> Some disadvantages i see are:
> -Noritz 063/069 has range of 29K btuh - 195K btuh. Higher output on
> the low side(min firing rate) compared to 17K btuh of Takagi JR.
> -Needs min incoming water psi of 29 vs 15 psi of Takagi JR. This may
> affect some off grid sites.
> -Noritz manual states " Do not use with ground water or well water".
> They are worried about the heat exchanger plugging up. The water
> passages
> in these units ( and most instantaneous heat exchangers) are VERY
> small and prone
> to hard water scaling. Noritz is the only manufacturer we know of flat
> out saying not to use away from city water. Not sure how this affects
its
> Warranty when used on a well.?? Have not seen issues with Aquastars
> this way locally.
> Also suggest putting mixing valve between solar preheat and
> instantaneous unit so it does not see excessive water temps.
>
> Scott
> Solar Assist
> crawfordscot at gmail.com
>
>
>
> Do you know if the Noritz will work like a Takagi with solar pre-heat?
We
> have a good source for Noritz. My understanding is Takagi is a Noritz
> spin-off.
> --
> Mo Rousso
> President
> HelioPower, Inc
> 760.451.9374
> www.heliopower.com
>
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