Delta T & T-Rise Limits - Slant/Fin CHS-85 Instructions Manual

CHS Series
2.4.6 Delta T & T-rise Limits
Delta T Limits – accessed by selecting "Delta T Limits" from the "Advanced Setup" screen; Delta T is the
difference in water temperature between Inlet and Outlet of the boiler. If the temperature difference (Delta T) is
o
greater than 60 F the burner is shut off for the time specified before firing again. An initial cycle and two recycles
are allowed before Lockout occurs.
T-rise Limits – accessed by selecting "T-rise Limits" from the "Advanced Setup" screen; T-rise is the rate of
increase of the boiler Outlet temperature. If the boiler outlet temperature increases by a rate greater than
o F/second the burner will recycle with a delay equal to the "Outlet T-rise delay" setting. An initial cycle and two
4
recycles are allowed before Lockout occurs.
Delta T Limits
Delta T delay
Table 2-19 Delta T & T-rise Limits Parameters
Parameter Description
Delay time between burner cycles when Delta T limit is exceeded. Range 1 to 60
Delta T
delay * minutes.
Outlet T-rise Delay time between burner cycles when T-rise limit is exceeded. Range 1 to 60
delay * minutes.
*=Password Protected
Figure 2-25 Delta T & T-rise Limits Screens
5 min
Controller and Display
T-rise Limits
Outlet T-rise delay
│
Slant Fin Corp.
5 min
Factory Settings
5 min
5 min
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