How to wire the timer on a Van Wert VA400 Aquatherm

How to wire the timer on a Van Wert VA400 Aquatherm

PostBy: dvholding On: Tue Apr 15, 2014 11:32 am

I am new to this forum. If I am in the wrong location, please nudge me in the right direction.

I purchased a 1958 VA 400 about fifteen years ago. It sat in my basement until November 2013. I finally broke down and put it online with my oil burning boiler.
My setup is "radiant" throughout 3/4 of a 3600sf colonial. The other quarter of the house is unfinished and unheated. Big mistake as I had a pipe burst in the middle of February when my local temp got down to -8.

My problem is "how to wire the timer to keep the fire from going out when the T'stats aren't calling for heat".
Do any in the forum have a wiring diagram for an S400a mercury timer?

I would be most appreciative.

If any in the forum have a need for Van Wert parts, I have two local sources for parts.

ScrantonMan
dvholding
 
Stoker Coal Boiler: VanWert VA400
Coal Size/Type: buckwheat
Other Heating: oil

Re: How to wire the timer on a Van Wert VA400 Aquatherm

PostBy: Rob R. On: Wed Apr 16, 2014 5:35 am

Welcome!

I assume you are using a triple aquastat on your Van Wert? If so, you should be able to hook up the timer just like an EFM.

http://c326988.r88.cf1.rackcdn.com/DF52 ... lation.pdf

See page 15 in the manual, timer is in the upper left of the diagram. Run the hot and neutral to terminals 1 & 2, and the switched power from terminal 4 to the ZR terminal in the aquastat.

Make sure the timer is level, and when you first start using it check the on and off times with your watch. 1 minute every half hour should get you started, if the fire still goes out increase the timer duration to 1.5 minutes and retest.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy

Visit Lehigh Anthracite