Home » Public Forums » GMCnet » hot water heater timer (Is this one OK?)
| hot water heater timer [message #250825] |
Wed, 28 May 2014 13:04  |
mickey szilagyi
Messages: 273
Registered: January 2013
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We finally got our hot water heater together and it's working just fine. We put in a 220V version element like several of you recommended. It's not supposed to burn out if on with a dry tank. However, we're considering a timer. Here's one we found on Amazon that we're thinking of getting.
http://www.amazon.com/dp/B002RL9UUQ/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=15VHOF90FHLRR&coliid=I1FMGGYJHQ3E2A&psc=1
We don't understand the electrical jargon well so if someone could help on whether this would work with the heating element please advise. The description says - "This unit is rated at 120Volt 60Hz 15AMP, 1875Watt Resistive 8AMP, 120Volt, 1000Watt Tungsten 120Volt, 8AMP, 1000Volt Ballast".
Is 15 amps OK? This one is digital but there are others that are mechanical - a dial and the units click as they count down. Any help with or comment on this is greatly appreciated.
Mickey
1977 Kingsley, 403, Lansing, MI
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| Re: [GMCnet] hot water heater timer [message #250828 is a reply to message #250825] |
Wed, 28 May 2014 14:07  |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Senior Member |
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Mickey,
Sorry to put a hole in your boat, but the element WILL burn out if not covered with water. Without being covered by water it will melt! The 220 V rated element just heats the water faster. I would suggest a timer that turns the heater on and off. The one that you have listed is good for 15 amps and that should be OK. You will just have to remember to turn the WH on 30 minutes before you need to use it. How many watt is your element rated at? You can determine your Amp load by this formula. W/V=A Watts divided by Volts equals Amps or load.
I have always let my heater thermostat control the heater. I have never had any issues in any of the coached that we have owned.
JR Wright
78 Buskirk Stretch
75 Avion
Michigan
On May 28, 2014, at 2:05 PM, Mickey Szilagyi wrote:
> We finally got our hot water heater together and it's working just fine. We put in a 220 V version element like several of you recommended. It's not
> supposed to burn out if on with a dry tank. However, we're considering a timer. Here's one we found on Amazon that we're thinking of getting.
>
> http://www.amazon.com/dp/B002RL9UUQ/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=15VHOF90FHLRR&coliid=I1FMGGYJHQ3E2A&psc=1
>
> We don't understand the electrical jargon well so if someone could help on whether this would work with the heating element please advise. The
> description says - "This unit is rated at 120Volt 60Hz 15AMP, 1875Watt Resistive 8AMP, 120Volt, 1000Watt Tungsten 120Volt, 8AMP, 1000Volt Ballast".
>
> Is 15 amps OK? This one is digital but there are others that are mechanical - a dial and the units click as they count down. Any help with or
> comment on this is greatly appreciated.
> --
> Mickey
> 1977 Kingsley, 403, Lansing, MI
> _______________________________________________
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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| Re: [GMCnet] hot water heater timer [message #250830 is a reply to message #250828] |
Wed, 28 May 2014 14:13 |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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Senior Member |
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I used a mechanical type timer. Unfortunately, it's max time was 15 minutes. Not enough time to heat the 6 gallon tank. Removed it. I did keep a switch in line to turn it off, when no need was indicated. Especially, when the coach is parked, or in storage.
Tom, MS II
2012 Phoenix Cruiser model 2552
KA4CSG
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| Re: [GMCnet] hot water heater timer [message #250839 is a reply to message #250830] |
Wed, 28 May 2014 17:47 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Tom,
I switch off the breaker for the water heater in the panel under Double Trouble's (Avion) sink when I store it for the winter.
Regards,
Rob M.
-----Original Message-----
From: Thomas Phipps
I used a mechanical type timer. Unfortunately, it's max time was 15 minutes. Not enough time to heat the 6 gallon tank. Removed
it. I did keep a switch in line to turn it off, when no need was indicated. Especially, when the coach is parked, or in storage.
Tom,
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] hot water heater timer [message #250840 is a reply to message #250828] |
Wed, 28 May 2014 17:56 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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John,
I am not familiar with the water heater used in a GMC as I have Avions. The drain for the heater tank is above the heater element so
when it is drained it leaves the element covered. HOWEVER, the temperature control and overheat switch are mounted on the outside of
the tank well above the drained tank water level. When I got back to the USA last year I found the breaker in the panel under the
bathroom sink for the water heater ON and the element was burned out. I suspect the water that remained in the water heater was
heated to the boiling point and evaporated leaving the element uncovered so it burned out.
I have added a step to my storage procedure to turn off the water heater breaker.
Regards,
Rob M.
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
-----Original Message-----
From: John Wright
Mickey,
Sorry to put a hole in your boat, but the element WILL burn out if not covered with water. Without being covered by water it will
melt! The 220 V rated element just heats the water faster. I would suggest a timer that turns the heater on and off. The one
that you have listed is good for 15 amps and that should be OK. You will just have to remember to turn the WH on 30 minutes before
you need to use it. How many watt is your element rated at? You can determine your Amp load by this formula. W/V=A Watts
divided by Volts equals Amps or load.
I have always let my heater thermostat control the heater. I have never had any issues in any of the coached that we have owned.
JR Wright
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Unsubscribe or Change List Options:
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: hot water heater timer [message #250869 is a reply to message #250825] |
Wed, 28 May 2014 22:17 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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Senior Member |
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mickey szilagyi wrote on Wed, 28 May 2014 12:04We finally got our hot water heater together and it's working just fine. We put in a 220V version element like several of you recommended. It's not supposed to burn out if on with a dry tank. However, we're considering a timer. Here's one we found on Amazon that we're thinking of getting.
http://www.amazon.com/dp/B002RL9UUQ/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=15VHOF90FHLRR&coliid=I1FMGGYJHQ3E2A&psc=1
We don't understand the electrical jargon well so if someone could help on whether this would work with the heating element please advise. The description says - "This unit is rated at 120Volt 60Hz 15AMP, 1875Watt Resistive 8AMP, 120Volt, 1000Watt Tungsten 120Volt, 8AMP, 1000Volt Ballast".
Is 15 amps OK? This one is digital but there are others that are mechanical - a dial and the units click as they count down. Any help with or comment on this is greatly appreciated.
It looks like that timer will work and it has adequate capacity, but I think you may be happier with just a simple rotary "mechanical" timer. I use one and simply give it a full turn once I arrive or want hot water. It is a 1 hour unit and relatively inexpensive.
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: [GMCnet] hot water heater timer [message #250884 is a reply to message #250869] |
Thu, 29 May 2014 03:24 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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On Wednesday, May 28, 2014, Bob de Kruyff wrote:
> mickey szilagyi wrote on Wed, 28 May 2014 12:04
>> We finally got our hot water heater together and it's working just fine.
> We put in a 220V version element like several of you recommended. It's
>> not supposed to burn out if on with a dry tank. However, we're
> considering a timer. Here's one we found on Amazon that we're thinking of
> getting.
>>
>>
> http://www.amazon.com/dp/B002RL9UUQ/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=15VHOF90FHLRR&coliid=I1FMGGYJHQ3E2A&psc=1
>>
>> We don't understand the electrical jargon well so if someone could help
> on whether this would work with the heating element please advise. The
>> description says - "This unit is rated at 120Volt 60Hz 15AMP, 1875Watt
> Resistive 8AMP, 120Volt, 1000Watt Tungsten 120Volt, 8AMP, 1000Volt Ballast".
>>
>> Is 15 amps OK? This one is digital but there are others that are
> mechanical - a dial and the units click as they count down. Any help with
> or
>> comment on this is greatly appreciated.
Like this
http://gmcmotorhome.info/living.html#timer
Erf
>
> It looks like that timer will work and it has adequate capacity, but I
> think you may be happier with just a simple rotary "mechanical" timer. I use
> one and simply give it a full turn once I arrive or want hot water. It is
> a 1 hour unit and relatively inexpensive.
> --
> Bob de Kruyff
> 78 Eleganza
> Chandler, AZ
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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