[nycbug-talk] OT: I need a new steam boiler

Mark Saad mark.saad at ymail.com
Mon Jan 7 10:12:34 EST 2013

  So I had the first of 5 boiler makers / plumbers show up and tell me what
they can do. This guy said the boilers he installs are 24VAC powered , he
did not think you could easily run them off batteries; and that I should
speak to an electrician .

The funny thing I still can not figure out is, why the hell do boilers user
AC and not DC ? Does anyone know why ?

In other news the system that runs with out electricity, a/k/a a thermopile
powered microvolt boiler, from what I have read, is now outlawed as they
are to inefficient .

On Fri, Jan 4, 2013 at 6:29 PM, Brett Wynkoop <nycbug at wynn.com> wrote:

> Greeting-
> In any case you will need some source or electric power to run the
> thermostat.  For my set up I have a gas fired boiler with a pilot light
> and a small battery/inverter combo to run the thermostat.
> Thermostat circuits seem to be 24 volts AC in this country.  So I have
> a 12 volt battery with a 100 watt inverter (small cig lighter type)
> that puts 110 Volts into the transformer for the furnace when there is
> a power failure.  I do not have it automated, but I should at some
> point do that.
> I have not investigated to see if the control circuit will work with
> DC.  If so then one could just get a couple of 12 volt 7AH gell cells,
> wire them in series and home brew a small 24V dc trickle charger to
> power the whole thing all the time.  This is real easy using linear
> technology by picking up a transformer and 4 diodes from Radio Shack.
> I hope this helps.
> -Brett
> --
> wynkoop at wynn.com               http://prd4.wynn.com/wynkoop/pgp-keys.txt
> 917-642-6924
> 718-717-5435


Mark Saad | mark.saad at ymail.com
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