Viessmann Vitodens 200-W B2HA series, Application Manual

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Application 9 Operational Setup Instructions
This application consists of a mid-temperature heat circuit, a low temperature heat circuit with motorized mixing
valve, and a low temperature heat circuit with heat exchanger and mixing valve. This application is conducive to
systems in which glycol must be incorporated for safety purposes. This multi-boiler configuration offers greater
flexibility in system design as it allows for increased system turndown, boiler redundancy, increased BTU inputs,
and simultaneous operation of the heating and DHW. As the cascade control targets the maximum temperature
for the system, the mixing valves offer the added benefit of automatically adjusting the supply water temperature
regardless of the water temperatures being supplied to the other heat circuits. Since this is all controlled by the
cascade control, this makes for a simple, long lasting and efficient system. To set up this system, follow the
steps below:
Type/Option Step# Description Parameter Set to:
Setup
Location
Setup on each boiler
1 Set to multi-boiler mode
Service Function -> Select
Multiboiler Application
Service
Menu
2 Set boiler number 07: Set Boiler #
Set in Level
2 Coding
3 Set LON participant number 77: Set Boiler #
4 Disable VS pump control 30 :00
Setup On Cascade Control
5 Complete participant check
(For further instruction, refer to Installation & Service Manual)
Service
Menu
6 Assign thermostat to HC1 91 :01
Set in Level
2 Coding
7 Remove pump post purge F2 :00
8 Setup HC1 outdoor reset curve
Set In
Heating Sub
Menu
9 Setup HC2 outdoor reset curve
10 Setup HC3 outdoor reset curve
11 Adjust HC1 heating schedule
--:--
Optional Adjustments
Set a Heating Schedule
Set In
Heating Sub
Menu
Set a DHW Schedule
Set a DHW Recirculation Schedule for P2.1
Vitodens 200-W
Notes/Comments
1. To enter service menu on the boiler you must hold the
"OK" and buttons for 5 seconds.
2. Setup wizard for the boilers and cascade controls must
be completed before proceeding with any additional
configurations.
3. To enter the service level of the cascade control, press
on the menu icon, select Service, and input the following
password: viservice
To proceed to level 2 coding, select system configuration
icon, select coding 2 and input the following password:
viexpert