R851B - Electronic Step Control
The Caloritech™ R851B Electronic Step Control is frequently used in boiler and duct heater systems to bring on stages a few seconds apart. As the process reaches set point, stages will drop out until the required heat balances the losses. Under steady state operation, some stages remain on and one or two stages may cycle to maintain straight line control.
For install information, specifications and detailed information, download the PDFs below or Find a Rep. If you are ready to purchase this product for your organization, request a quote by filling out the form below.