| Water heater thermostat with high temp safety [message #105152] |
Fri, 05 November 2010 15:06  |
GMCNUSA
Messages: 283
Registered: August 2006
Location: Indianapolis, IN
Karma: 0
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Senior Member |
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My American Appliance 6 gal water heater will scald you both when using engine coolant and when pluged in to 120 volt power. I know why the engine gets it too hot and we deal with that. My thermostat on the water heater has gone bad and will not open until it reaches the 190 degree safety limit. I cannot find a replacement with 190 high limit. The Home Depot, etc. stores for home water heaters use a high limit of 170 degrees and I know some people have the problem that when they pull into camp ground the 120 v won't heat because the high temp limit is kicked out. Does anyone have a source for the higher safety 190 degree thermostats?
Larry Dilk
Indianapolis, IN
76 Eleganza II
Patterson 455,Turbo City TBI,
Just LOVE It!
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| Re: Water heater thermostat with high temp safety [message #105164 is a reply to message #105152] |
Fri, 05 November 2010 16:54  |
Bruce S
Messages: 13
Registered: November 2010
Location: Winnipeg,Manitoba,Ca
Karma: 0
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Junior Member |
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The 120v thermostat in my 79 GMC MH was the same after I tried it out. My fix was to install an adjustable thermostat (cost $15 cnd). Got it from a local electrical distributor.
Hope this helps
Bruce
78 Eleganza II, more demanding of attention & the pocket book than the wife but less bitchy (my better 1/2 suggestion).
[Updated on: Fri, 05 November 2010 16:57] Report message to a moderator |
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| Re: Water heater thermostat with high temp safety [message #105226 is a reply to message #105152] |
Sat, 06 November 2010 08:50 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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Senior Member |
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To avoid scalding you can install a thermostatic mixing valve at the water heater. This valve mixes dangerous hot with cold to produce safe hot water.
Such a valve is #5847T75 on Mcmaster Carr's web site page:
http://www.mcmaster.com/#mixing-valves/=9lmdc3
Similar valves are available at plumbing supply houses. Not sure if they are available at big box stores.
They will reduce the chance of a burn from scalding water.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: [GMCnet] Water heater thermostat with high temp safety [message #105310 is a reply to message #105278] |
Sat, 06 November 2010 22:58 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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Senior Member |
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| Ken Henderson wrote on Sat, 06 November 2010 18:18 |
Steve,
Can that valve be mounted just downstream of the hot water heater to serve
the shower, lavatory, and kitchen faucets? Or must one be located at each
point-of-use?
Ken H.
On Sat, Nov 6, 2010 at 9:50 AM, Steve Southworth <midlf@centurytel.net>wrote:
> 5847T75
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The McMaster Carr catalog indicates that one is intended for use at a faucet. However the ones they show for mounting at the heater are considerably larger than is needed for a motor home. The one I noted is a more appropriate size for a motor home and would work quite well at the heater. I haven't got that far yet but I will be installing one at the water heater on our coach. Someone else here (GMCnet/forum) has done this and wrote about it and I placed it on my todo list.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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