Download Viessmann VITOTRONIC 300-K Unit installation

Commissioning
Selecting the boiler sequence (if required)
Subject to the codes set in the "Cascade" group and internal control calculations, the control unit offers various
boiler sequences. Coding addresses
that influence the boiler sequence:
"38"
Changing the lead boiler
and the boiler sequence
"39"
Permanent lead boiler
"3A"
Permanent last boiler
"41" to "44" ECO thresholds
"65", "6F" ECO thresholds
"74", "7d" ECO thresholds
■ Via the ECO threshold, every boiler
can be blocked or enabled subject to
the outside temperature.
■ The ECO threshold is disabled if the
boiler is required to achieve the set
flow temperature in the case of enabled boilers failing.
■ At least the lead boiler remains in
operation when all boilers in a system
would otherwise be blocked via the
ECO threshold.
1. Press å.
2. "Boiler sequence"
3. Select the required boiler sequence
and confirm with "OK".
■ Vitotronic 300-K and 200-H:
The LON communication module
(accessory) must be fitted.
Installation and service instructions, Vitotronic 200-H
■ Within one LON, the system number
(coding address "98" in the "General" group) must always be the same.
■ Only one Vitotronic may be programmed as fault manager.
■ The data transfer via LON can take
several minutes.
5601 090 GB
■ Within one LON, the same subscriber
number must not be allocated twice.
35
Service
Connecting the control unit to the LON system