SDC / DHC

Hydraulic Components

 

 

For hot-water loading without heating (tank priority), the number of heat generators is limited by the setting in the quick hot-water connection parameter.

With parallel operation (heating circuit and hot-water demand simultaneously), there is no stage number limitation.

With active hot-water loading, reversion of stages occurs under consideration of the configured switch-off delay.

If heating circuit operation is active with more stages than were enabled for hot-water circuit operation and hot-water loading then occurs in priority mode, the stages above and beyond the number of stages enabled for hot-water loading are switched off directly. Reversion of the activated stages does not occur in parallel operation.

The "stage sequence switch-over power" must be taken into account for connection of the following stage.

Example:

•Cascaded system with five stages

•Parameter 02 = 1 min.

•Parameter 03 = 2 min.

•Parameter 09 = 3 min.

Heating

1min

1min

1min

1min

WEZ1

WEZ2

WEZ3

WEZ4

WEZ5

2min

2min

2min

2min

•Connection and disconnection with the configured delay of parameters 02 and 03.

Tank priority (no heating demand):

10s10s

WEZ1WEZ2

WEZ3

WEZ4

WEZ5

2min2min

•Connection immediately with minimum delay

•Reversion with configured delay P3

EN2H-0221GE51 R0808

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Honeywell EN2H-0221GE51 R0808 service manual Heating, Tank priority no heating demand
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EN2H-0221GE51 R0808 specifications

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