Dunham Bush/Warren Webster Sys????

Mad Dog_2

quite a few out there. The house we did the snowmelt still has one. Yes, you could use a good steam pro out there. Mad Dog

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FredR

Dunham Bush/Warren Webster Sys????

Seeking some help identifying and understanding this system.
The system was installed early 1950s. The boiler,vacuum/condensate tank and controls were were replaced 1996. The system has two zones(auto/valves).
I found two Dunham Bush Vari Vac differental controllers,located at the far end of the supply/ret lines.
I suspect they are no longer used and not removed when the new controls were installed.

The current boiler is Smith mod 28A-6 gas.
Condensate tank is controlled by Klockner/Moeller control panel. Two air pumps and two water pumps.
There is no literature at site. Boiler cyles off@5 psi,on @0 psi. Below 55 deg the boiler maintains 5lbs even thogh ther is no call for heat from either zone.
The condensate system semms to operate independently of the boiler. Boiler has oa stat set @55 deg.
A Johnson unitary controller (Facilitator) with two space sensors and remote temp setpoints for each zone.
Also has a Honeywell programable controller (time clock).
I am currently making a drawing of the system piping and wiring. Sorry no pictures.

Should this system be controller by a vaporstat? press?
Should the condensate system be interlocked with the boiler?
I am going to seek a qualified contractor to work with when i finish the drawing. However,I am hoping someone here can give guidance and suggestions regarding this system.

FredR

Dunham Bush/Warren Webster Sys????

Seeking some help identifying and understanding this system.
The system was installed early 1950s.The system is in a church used for brief peroids daily and Mass on weekends. The boiler,vacuum/condensate tank and controls were replaced 1996. The system has two zones(auto/valves).
I found two Dunham Bush Vari Vac differental controllers,located at the far end of the supply/ret lines.
I suspect they are no longer used and not removed when the new controls were installed.

The current boiler is Smith mod 28A-6 gas.
Condensate tank is controlled by Klockner/Moeller control panel. Two air pumps and two water pumps.
There is no literature at site. Boiler cyles off@5 psi,on @0 psi. Below 55 deg the boiler maintains 5lbs even though there is no call for heat from either zone.
The condensate system seems to operate independently of the boiler. Boiler has oa stat set @55 deg.
A Johnson unitary controller (Facilitator) with two space sensors and remote temp setpoints for each zone.
Also has a Honeywell programable controller (time clock).
I am currently making a drawing of the system piping and wiring. Sorry no pictures.

Should this system be controller by a vaporstat? press?
Should the condensate system be interlocked with the boiler?
Possibly an aquastat to maintain boiler water when there is no call for heat.
I am going to seek a qualified contractor to work with when I finish the drawing. However,I am hoping someone here can give guidance and suggestions regarding this system.

Thanks Fred

DanHolohan

You'll find what you need in the Library

Dunham

Webster

It pays to wander off the Wall.

FredR

Dan,thank you for the links. I had looked in the library but obviously did not see the info.

DanHolohan

There's a lot in there.

It's understandable. Thanks.

Steamhead (in transit)

The Vari-Vac system

is still being made. When operating properly it modulates the heat output pretty well. Dunham is now MEPCO and their site is www.mepcollc.com .

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FredR

Dunham Bush Vari-Vac system

Dan,Steamhead,Mad Dog
Thanks again for the responses.
Steamhead-FYI Mepco referred me to a sister co, that handles the Vari Vac calls. Thanks for the link.

Skidmore Co
Benton Harbor MI
269-952-2522
This company gave me the info for the co that serves this area (NJ).
Autumn Assoc 732-787-8900 ask for Mike
I am posting this info for anyone who might need it.