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Subject: Market Farming
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- From: KAKerby AT aol.com
- To: market-farming AT lists.ibiblio.org
- Subject: Re: [Market-farming] Greeenhouse heating
- Date: Wed, 26 Jan 2011 01:08:23 -0500 (EST)
We have an on-demand heater for our house. The one golden rule for
on-demand heaters is that they never, ever, EVER, can be allowed to
freeze. Since the water is only heated while the water is flowing through
the heater (and sometimes not even then depending on your system), the unit
is at risk of freezeup if left in unheated spaces during winter. Your pex
tubing under the benches wouldn't be damaged by a freeze, but the copper tubing
in the Bosch would definitely object. A single hard freeze overnight could
ruin the whole thing, or be prohibitively costly to fix. Also, depending
on their venting requirements, they are hard to insulate adequately enough to
protect against freezeup in otherwise unheated spaces. If there's any
chance your greenhouse space could go below freezing, either now or during a
slow period when the greenhouse is not in use, I'd look for another
option.
Kathryn Kerby
frogchorusfarm.com
Snohomish, WA
In a message dated 1/25/2011 9:14:52 P.M. Pacific Standard Time,
johnkaty AT shaw.ca writes:
To heat the soil blocks and plants in my large double poly greenhouse (3000 sq) , I am thinking of hooking up an on demand propane fired Bosch water heater to some pex tubing and running it on 9" spacing looped under my benches. |
-
Re: [Market-farming] Greeenhouse heating,
KAKerby, 01/26/2011
- Re: [Market-farming] Greeenhouse heating, deberryemail-website, 01/26/2011
- <Possible follow-up(s)>
-
Re: [Market-farming] Greeenhouse heating,
sunnfarm, 01/26/2011
- Re: [Market-farming] Greeenhouse heating, John Ehrlich, 01/26/2011
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