I have an Econoburn 200 that I am in the final stage of commissioning. It has the older controller and I am wondering if those with experience with this boiler could comment on a few issues:
1. The Econoburn recommended plumbing diagram indicated that the boiler should be plumbed not in a classic primary/secondary set up, but rather with a circulator that routes water through the boiler until the boiler has the water at 150F, then shuts off, powering up a second pump that circulates water to the load. Thus, these two pumps are cycles on and off to supply water to the load once the boiler water reaches 150f. There is a user set boiler output temp control as well, though this doesn't seem to control the preprogrammed set point that turns the pumps on and off. It seems the boiler output temp is controlled solely by the blower output. My question is, how closely does the boiler output temp actually track this user set output temp?
2. Has anyone plumbed one of these in a proper primary/secondary set up? That is how I have it plumbed and plan to use a tekmar 356 to control the secondary loop flow to the load (1000 gal storage) by setting the boiler to output 180F and then varying the flow in the secondary loop such that the return temp to the boiler inlet stays above 150f. I want the primary pump to come on at 150F, not turn off, and the secondary pump feeding storage to turn on at 180F so I will need to make some changes, Just wondering what others have done...
Thanks.
1. The Econoburn recommended plumbing diagram indicated that the boiler should be plumbed not in a classic primary/secondary set up, but rather with a circulator that routes water through the boiler until the boiler has the water at 150F, then shuts off, powering up a second pump that circulates water to the load. Thus, these two pumps are cycles on and off to supply water to the load once the boiler water reaches 150f. There is a user set boiler output temp control as well, though this doesn't seem to control the preprogrammed set point that turns the pumps on and off. It seems the boiler output temp is controlled solely by the blower output. My question is, how closely does the boiler output temp actually track this user set output temp?
2. Has anyone plumbed one of these in a proper primary/secondary set up? That is how I have it plumbed and plan to use a tekmar 356 to control the secondary loop flow to the load (1000 gal storage) by setting the boiler to output 180F and then varying the flow in the secondary loop such that the return temp to the boiler inlet stays above 150f. I want the primary pump to come on at 150F, not turn off, and the secondary pump feeding storage to turn on at 180F so I will need to make some changes, Just wondering what others have done...
Thanks.
