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Backup Boiler
Mike T., Swampeast MO
Member Posts: 6,928
When I installed my new boiler (Vitodens) I left the old boiler (W/M CGM-6) and circulator (B&G 100) in place. It's flow-isolated from the system but still has a connection via an alternate connection (via the built-in air separator)to the plain expansion tank.
Gas valve, pilot, and power are off.
I run a dehumidifier in the summer and basement temp rarely exceeds 80° and relative humidity exceeds 60% only for short periods on the muggiest of nights.
What should I do to ensure my backup is available should the need arise? Changeover involves opening two valves, closing two others, turning one switch off and another off and lighting the pilot. Original mechanical reset and WWSD controls for the W/M are still installed.
Gas valve, pilot, and power are off.
I run a dehumidifier in the summer and basement temp rarely exceeds 80° and relative humidity exceeds 60% only for short periods on the muggiest of nights.
What should I do to ensure my backup is available should the need arise? Changeover involves opening two valves, closing two others, turning one switch off and another off and lighting the pilot. Original mechanical reset and WWSD controls for the W/M are still installed.
0
Comments
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2 options
1 - Drain old boiler completely and leave valves open so that it dries.
2 - Open valves to old boiler slightly so that you will have enough flow thru boiler to keep it dry whenever 1st boiler is on.0 -
Not sure what you mean by "open valves to old boiler slightly...to keep it dry." Are you referring to the possibility of condensation on the outside of the HX of the old boiler? Old HX is at ambient and RH below 60%--40% or so in cold weather.0 -
disconnect the flue vent, cap the openings .
0 -
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> the old boiler (W/M CGM-6) and circulator (B&G
> 100) in place. It's flow-isolated from the
> system but still has a connection via an
> alternate connection (via the built-in air
> separator)to the plain expansion tank.
>
> Gas
> valve, pilot, and power are off.
>
> I run a
> dehumidifier in the summer and basement temp
> rarely exceeds 80° and relative humidity exceeds
> 60% only for short periods on the muggiest of
> nights.
>
> What should I do to ensure my backup
> is available should the need arise? Changeover
> involves opening two valves, closing two others,
> turning one switch off and another off and
> lighting the pilot. Original mechanical reset
> and WWSD controls for the W/M are still
> installed.
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> the old boiler (W/M CGM-6) and circulator (B&G
> 100) in place. It's flow-isolated from the
> system but still has a connection via an
> alternate connection (via the built-in air
> separator)to the plain expansion tank.
>
> Gas
> valve, pilot, and power are off.
>
> I run a
> dehumidifier in the summer and basement temp
> rarely exceeds 80° and relative humidity exceeds
> 60% only for short periods on the muggiest of
> nights.
>
> What should I do to ensure my backup
> is available should the need arise? Changeover
> involves opening two valves, closing two others,
> turning one switch off and another off and
> lighting the pilot. Original mechanical reset
> and WWSD controls for the W/M are still
> installed.
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> the old boiler (W/M CGM-6) and circulator (B&G
> 100) in place. It's flow-isolated from the
> system but still has a connection via an
> alternate connection (via the built-in air
> separator)to the plain expansion tank.
>
> Gas
> valve, pilot, and power are off.
>
> I run a
> dehumidifier in the summer and basement temp
> rarely exceeds 80° and relative humidity exceeds
> 60% only for short periods on the muggiest of
> nights.
>
> What should I do to ensure my backup
> is available should the need arise? Changeover
> involves opening two valves, closing two others,
> turning one switch off and another off and
> lighting the pilot. Original mechanical reset
> and WWSD controls for the W/M are still
> installed.
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> the old boiler (W/M CGM-6) and circulator (B&G
> 100) in place. It's flow-isolated from the
> system but still has a connection via an
> alternate connection (via the built-in air
> separator)to the plain expansion tank.
>
> Gas
> valve, pilot, and power are off.
>
> I run a
> dehumidifier in the summer and basement temp
> rarely exceeds 80° and relative humidity exceeds
> 60% only for short periods on the muggiest of
> nights.
>
> What should I do to ensure my backup
> is available should the need arise? Changeover
> involves opening two valves, closing two others,
> turning one switch off and another off and
> lighting the pilot. Original mechanical reset
> and WWSD controls for the W/M are still
> installed.
http://www.la-ringtones.com/tones/ real ringtones. motorola ringtones: Free nokia ringtones here, Download ringtones FREE, Best free samsung ringtones. [url]http://www.la-ringtones.com/ring/[/url] [link=http://www.la-ringtones.com]tracfone ringtones[/link] from site .0 -
funny ringtones
> the old boiler (W/M CGM-6) and circulator (B&G
> 100) in place. It's flow-isolated from the
> system but still has a connection via an
> alternate connection (via the built-in air
> separator)to the plain expansion tank.
>
> Gas
> valve, pilot, and power are off.
>
> I run a
> dehumidifier in the summer and basement temp
> rarely exceeds 80° and relative humidity exceeds
> 60% only for short periods on the muggiest of
> nights.
>
> What should I do to ensure my backup
> is available should the need arise? Changeover
> involves opening two valves, closing two others,
> turning one switch off and another off and
> lighting the pilot. Original mechanical reset
> and WWSD controls for the W/M are still
> installed.
http://www.la-ringtones.com/mp3/ ringtones site. [URL=http://www.la-ringtones.com]qwest ringtones[/URL]: Free nokia ringtones here, Download ringtones FREE, Best free samsung ringtones. [url=http://www.la-ringtones.com]nextel ringtones[/url] from website .0 -
funny ringtones
> the old boiler (W/M CGM-6) and circulator (B&G
> 100) in place. It's flow-isolated from the
> system but still has a connection via an
> alternate connection (via the built-in air
> separator)to the plain expansion tank.
>
> Gas
> valve, pilot, and power are off.
>
> I run a
> dehumidifier in the summer and basement temp
> rarely exceeds 80° and relative humidity exceeds
> 60% only for short periods on the muggiest of
> nights.
>
> What should I do to ensure my backup
> is available should the need arise? Changeover
> involves opening two valves, closing two others,
> turning one switch off and another off and
> lighting the pilot. Original mechanical reset
> and WWSD controls for the W/M are still
> installed.
http://www.la-ringtones.com/mp3/ ringtones site. Free nokia ringtones here, Download ringtones FREE, Best free samsung ringtones. from website .0
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