I heat my small workshop (16x30x10) with a a Siesco electric boiler circulating hot water in the floor. I'm on a load control system that shuts off the power during peak electric load conditions. We have had 10 days straight of extreme cold up here in northern Minnesota with night time temps close to -40 and day time temps at about -15F. I usually keep my temp set at 62 but the shop started losing temp getting a couple of degrees colder each day. Yesterday it was only 45 degrees in the shop in the morning. I think the problem is that the electricity is only on for a couple of hours at time and only a few time per day. The output water temp was set for about 100 degrees F. I turned this up to 120 and this morning the temp had gone up to 51 degrees. Am I on the right track that I need to increase circulating water temp when the load control time increases?
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
Electric boiler and load control
- Thread starter slowthump
- Start date
Firebrick43
Well-known member
Depends on the btu output of the boiler and how you have it controlled. If your controller is keeping on the boiler continuously and the gpm of the pump is correct, raising the temp like you did will accomplish nothing. If your boiler is somewhat oversize for the load and the controller is seeing the temp and shutting off the boiler until the temp drops then raising the temp will possibly help some but raising the flow would be better.
Limit opening the overhead doors if you can, otherwise you might be SOL
Limit opening the overhead doors if you can, otherwise you might be SOL
Bills Tools
Well-known member
Radiant heat needs to be on most of the time to provide steady heat. You don’t want your slab cooling off or it takes hours to heat back up. Yes turning the water temp up helps. Don’t turn off the unit or you are wasting energy trying to warm up the slab. I hope you have glycol in that system. Don’t want that system to freeze up. If your boiler is undersized can also make it hard to keep up. Yet raising water temp and not shutting it down just cycle on temp hopefully helps
Sent from my iPad using Garage Journal
Sent from my iPad using Garage Journal