IBC V-10, Руководство пользователя

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Let’s say a radiant floor is set at 120 °F and an air handler is set at 160 °F. When both load
types call for heat, the boiler will supply 160 °F. If only the load for radiant floor is calling, the
boiler will supply water temperature at 120 °F.
2.7.2 Full mode load combining
In Full mode load combining, there are six default parameter settings:
Parameter Default Minimum Maximum
Primary Load Disabled Load 1 Load 4
Secondary Load Disabled Load 1 Load 4
Initial Delay
5 mins 2 mins 15 mins
Off Delay
5 mins 2 mins 15 mins
Retry Delay
10 mins 5 mins 60 mins
Maximum Throttle %
75 % 50 % 90 %
Primary
Load -
Highest
temperature Set as the load that will control the boiler operation while Load Combining
is active. This load must have a higher initial priority than the Secondary
Load, and should have a higher water temperature requirement.
Secondary
Load -
Lowest
temperature
Set to the load that will be serviced simultaneously, in combination with the
Primary Load, if the conditions for Load Combining are met; that is, if the:
- Supply temperature requirements for the Primary Load are being met;
- Supply temperature is within the temperature range requirements of the
Secondary Load
and the boiler has the capacity to service the Secondary
Load as determined by the Maximum Throttle % setting.
Initial Delay The number of minutes after the Primary Load must initially be serviced
before the boiler can add the Secondary load. Allow sufficient time for the
Primary Load to stabilize before the boiler adds the Secondary load.
Off Delay When the secondary load is added into combination service the supply
temperature should fall briefly below the allowed temperature range for the
Primary load. The Off Delay is the number of minutes after the loads have
been initially combined that the loads will continue to be combined
regardless of an under-temperature condition. Allow a long enough delay to
allow the boiler to drive the supply temperature up within the Primary load’s
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2.7.2 Full mode load combining