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Boiler cycles even when thermostat equal to room temp

System cycles on even after room temp attained
I have one pipe steam with Burnham independence boiler with noisy indirect water storage tank
Zman

Comments

  • rrwitherspoon
    rrwitherspoon Member Posts: 104
    Shouldn't the boiler stop cycling if call for heat
    attained? Thermostate set at 70 degrees and system cycles on at 70 degrees.
    Zman
  • vaporvac
    vaporvac Member Posts: 1,520
    Is your Tstat set for 1CPH? This is a recurring problem with the newer Tstats, but easily fixed. Also, the digital Tstat only register integers +/_ 1 deg so it could really be lower than it reads.
    Two-pipe Trane vaporvacuum system; 1466 edr
    Twinned, staged Slantfin TR50s piped into 4" header with Riello G400 burners; 240K lead, 200K lag Btus. Controlled by Taco Relay and Honeywell RTH6580WF
  • rrwitherspoon
    rrwitherspoon Member Posts: 104
    How do you set thermostat for 1 CPH
    My thermostat jusy gives me options for day of week , time and temp in degrees
  • vaporvac
    vaporvac Member Posts: 1,520
    What is the make & model of your Tstat?
    Two-pipe Trane vaporvacuum system; 1466 edr
    Twinned, staged Slantfin TR50s piped into 4" header with Riello G400 burners; 240K lead, 200K lag Btus. Controlled by Taco Relay and Honeywell RTH6580WF
  • John Mills_5
    John Mills_5 Member Posts: 935
    Most stats, especially Honeywell and Emerson, won't deviate from the set temp unless the house really warms up or cools down. A few brands will wait til the display shows 69 before turning the heat on and may run it til 71 appears.
  • rrwitherspoon
    rrwitherspoon Member Posts: 104
    White Rodgers programmable thermostat
  • vaporvac
    vaporvac Member Posts: 1,520
    Without a model number it's hard to look up the install manual. If you still have that it should give directions for setting the CPH to 1 or steam. You could try googling it, also.
    Two-pipe Trane vaporvacuum system; 1466 edr
    Twinned, staged Slantfin TR50s piped into 4" header with Riello G400 burners; 240K lead, 200K lag Btus. Controlled by Taco Relay and Honeywell RTH6580WF
  • rrwitherspoon
    rrwitherspoon Member Posts: 104
    Where would I find model number? The thermostat was installed in 2005
  • rrwitherspoon
    rrwitherspoon Member Posts: 104
    Ok
  • rrwitherspoon
    rrwitherspoon Member Posts: 104
    1F80-361 white rodgers thermostat 5-1-1
  • Mark N
    Mark N Member Posts: 1,090
    Do you have the manual? For steam it needs to be programmed to SL. You can find the manual online.
  • rrwitherspoon
    rrwitherspoon Member Posts: 104
    SL option never comes up as a choice
    Only day of week and time
  • Mark N
    Mark N Member Posts: 1,090
    Page 4 of the manual go to the configuration menu.
    rrwitherspoon