Adjusting The Heating Curves (Only For Weather- Compensated Control Units) - Viessmann Vitodens 222-F B2TA Installation And Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps
5 Heating circuit with mixer M2 (heat-
ing circuit 2)
6 Flow temperature sensor M2
7 Heating circuit pump M2
8 Extension kit for one heating circuit
with mixer M2
9 Heating circuit with mixer M3 (heat-
ing circuit 3)
qP Temperature limiter to restrict the
maximum temperature of underfloor
heating systems
Function/system components
Operation with LPG
System only with two heating circuits with mixer with
extension kit for mixer (without unregulated heating
circuit) with DHW heating
System without DHW circulation pump:
Heating circuit pump A1 connection at internal exten-
sion H1 or H2
System with DHW circulation pump:
Heating circuit pump A1 connection at extension
AM1, terminal A1
DHW circulation pump connection at extension AM1,
terminal A2
or
DHW circulation pump connection at internal exten-
sion H1 or H2
System with low loss header
Adjusting the heating curves (only for weather-compensated
control units)
The heating curves illustrate the relation-
ship between the outside temperature
and the boiler water or flow tempera-
ture.
To put it simply, the lower the outside
temperature, the higher the boiler water
or flow temperature.
70
(cont.)
qQ Flow temperature sensor M3
qW Heating circuit pump M3
qE Extension kit for one heating circuit
with mixer M3
qR Low loss header
qT Flow temperature sensor, low loss
header
Adjust
The boiler water or flow temperature in
turn affects the room temperature.
Settings in the delivered condition:
■ Slope = 1.4
■ Level = 0
Code
Group
82:1 "General"
00:8 "General"
53:2
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04:0 "Boiler"
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