Re: [GBlist] tankless water heaters

["malcolm.scott" <malcolm.scott@ntlworld.com>]

----- Original Message -----
From: "Brian McMaster" <bmcmaster@swrpc.org>
To: "'Greenbuilding'" <greenbuilding@crest.org>; <pvusers@crest.org>
Sent: Friday, January 11, 2002 8:07 PM
Subject: [GBlist] tankless water heaters



I'm looking to install a propane-fired tankless water heater in our off-grid
house now under construction. I'm particularly interested in the the Takagi
TK-1 (aka Aquastar 240 FX) because of its high output.  Its specifications
show that it requires 110v ac power, at a maximum of 0.8 amps for electronic
ignition and computerized controls.  Apparently a power vent exhaust would
use additional electricity.   This model is not direct-vented, so I'll have
to supply fresh air for combustion via vents from the outside or from other
rooms.

Questions:

Anyone have experience running one of these off an inverter (a Trace SW4048
in this case)?
Are the electronic controls a 24/7 phantom load?

Regarding fresh air supply: I'm interested in feedback on creative ways to
supply that air in hopefully more efficient ways than an open hole in the
wall.

***
Can you build it into a cupboard, sealed to the room but with a vent to the
outside. I'm surprised there are no sealed condensing heaters available.
Malcolm


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