Partial Load Operation; Operating And Service Documents - Viessmann VITOPLEX 100 Service Instructions Manual

Adjusting the burner
The minimum boiler water temperature for oil and gas
operation is 75 °C. Ensure the (minimum) boiler return
temperature of 65 °C.

Partial load operation

Set the minimum heating output for the base load
stage in accordance with the flue system. The flue sys-
tem must be suitable for the low flue gas temperatures.
In the case of frequent cycling in standby mode and for
partial loads below 40 % we recommend that you:
■ Insulate the flue gas collector
■ Install a motorised flue gas damper
Set the minimum runtime of the boiler to 10 min
■

Operating and service documents

1. Complete and detach the customer registration
card:
■ Hand the system user their section for safekeep-
ing.
■ Retain the heating contractor's section.
Commissioning, inspection, maintenance
(cont.)
This extends the service life and reduces running
costs.
2. File all parts lists, operating and service instruc-
tions in the folder and hand this over to the system
user.
The installation instructions are no longer required
after the installation is complete and therefore do
not need to be retained.
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