Okofen PE 08, Operating Manual

Page: 111 / 170

Existing Boiler
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113 3..113 3..2 2 E Ex xiis sttiin ng g B Bo oiille err
In the menu
existing boiler
you can adjust the settings, when the system is operated with a pellet boiler and a
further existing boiler.
If an existing boiler is available in the system, the heating controller identifys it by the boiler sensor of the exis-
ting boiler (terminal X 13).
Additional terminals on heating controller:
• Terminal X13 — Boiler sensor Existing Boiler
• Terminal X24 — Switch valve
Note:
The Return flow increase of an existing boiler is not controlled by the controller.
If the setpoint temperatur on the boiler sensor of existing boilers (terminal X 13) is
exceeded, depending on allocation accumulator pump or heating circuit pumps get
activated.
Additionally the potentialfree contact X24 (diverter valve) is switched.
If the Switch Temp is reached, the Pellematic switches off.
The switch valve stays to use the residual heat of the Pellematic.
If the existing boiler reaches the
Temperatur Max
outside the heating times, all
DHW circuits and heating circuits switches ON. (DHW preference is active).
If the temperature of the existing boiler falls below the Switch Temp no burner de-
mand is required within the delay time.
The inversion of the Switch Valve turns the reserve output of the first I/O Box. An in-
stallation of the Switch Valve in both directions is possible.
Operating Manual PELLEMATIC® PE(S)(K)(B) 10 — 56