36
Vitodens 222-F, B2TB
Application 4 Operational Setup Instructions
1.
The coding parameters described above are modified in
level 2 coding.
Step1
To access this coding you must hold the "OK"
key and "ext. Menu" key together for 5 seconds. This
gives access to the service level.
Step 2
: Hold the "OK" key and "Return" key for 5
seconds. This gives access to level 2 coding.
2.
External Changeover- A function in which a contact
from an external device forces the boiler into a standby/
setback mode.
3.
External Demand- A function in which a contact from
an external device forces the boiler to target a specific
water temperature. This overrides any/all outdoor reset
curves until the external contact re-opens.
Notes/Comments
In this application there are 2 heat circuits which operate at different temperatures. This particular drawing
portrays HC1 is a low temperature circuit, and HC2 is a Mid/High temperature circuit. Although there are
many different configurations, the setup below will operate HC1 as an on/off function (External Change-
over) using an outdoor reset curve, and HC2 as a constant set point temperature (External Demand). It is
important to provide a method of protecting the HC1 from high water temperatures when HC2 is operat-
ing, so don't forget to include the thermostatic mixing valve. To setup the boiler for this application you will
need to complete the following:
Type/Option
Step #
Description
Parameter
Set to:
Setup
Location
1
Set DHW Temperature
Set in heating
sub menu
HC1
Programming
2
Designate 28/20 Contact as HC1 Pump(P4)
53
:02
Set in Level 2
Coding
3
Configure boiler to operate upon a call for heat from HC1
Activates DE1 Contact
3A
:01
Initiates Changeover
D5
:01
Identifies changeover based on DE1 contact
D8
:01
Time limit for changeover
F2
:0
Set Pump Post Purge Time
F5
# of Minutes
Temperature Limit for disabling changeover
F8
-61
Turns off boiler circulator upon completion of call for heat
A3
:-9
A4
:01
Note: This disables the Frost Protection function.
4
Setup HC1 Outdoor Reset Curve
Set in heating
sub menu
5
Adjust Daytime schedule
--:--
6
Set Reduced room temperature
3ºC
External
Demand
Programming
7
Configure boiler to operate as an External Demand from HC2
Set in Level 2
Coding
(Ext. Demand)
Set desired setpoint temperature
9B
Set Temp.
Identify DE2 as external demand contact
3B
:02
Internal Circulator stays in control mode during
"External Demand"
3F
:02
Optional Adjustments
Set a Heating Schedule
Set in heating
sub menu
Set an individual DHW Schedule
Configure P1 to shut down once low loss header has reached its setpoint temperature
51:
:01
Set in Level 2
Coding
Содержание Vitodens 222-F B2TB
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Страница 29: ...25 Application 1 Operational Setup continued Notes Comments ...
Страница 33: ...29 Application 2 Operational Setup continued Notes Comments ...
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Страница 41: ...37 Application 4 Operational Setup continued Notes Comments ...
Страница 45: ...41 Application 5 Operational Setup continued Notes Comments ...
Страница 49: ...45 Application 6 Operational Setup continued Notes Comments ...
Страница 51: ...47 47 Global presence Local commitment ...