Welcome! Here are the website rules, as well as some tips for using this forum.
If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
Lochinvar Solutions gas boiler
I had old oil boiler replaced with Lochinvar Solutions gas boiler couple months ago. Contractor only replaced boiler. Re-used same indirect h/w tank and outdoor reset control from old boiler. Now that it has gotten cold I noticed that it runs differently than oil boiler. For example:
Today the outside air temp is 37*. When I came home from being away all day the in-side temp on thermostat was set at 64*, and I moved thermostat to 68* and went downstairs to actually monitor the boiler. Boiler ran 9 min until water temp reached 140*. Shut off for 3 min until water temp dropped to 120*. I then monitored for the next 20 min and found that boiler would kick on when water temp dropped to 120* run for about 50 seconds until temp reached 140* then shut off for about 1:30 until temp dropped back to 120*. This cycle continued until inside temp reached 68* and heat was no longer being called for. The entire time the circulator was moving water through the base board.
It just seems to me that the constant on/off of the boiler is not efficient. Is this the way the boiler is designed to run? (It runs about the same way when making hot water for indirect too.)