Adjusting The Heating Curves (Only For Weather-Compensated Control Units) - Viessmann VITODENS 200-W Installation And Service Instructions Manual

Commissioning, inspection, maintenance
Matching the control unit to the heating system
System version 5
Multi boiler system with several heating circuits with mixer and low loss header (with or without DHW heating)
1
5
6
7
Fig. 36 ID: 4605525_1404_02
Vitodens 200-W
1
Vitotronic 300-K
2
Outside temperature sensor
3
Boiler circuit pump
4
DHW cylinder
5
6 Cylinder temperature sensor
Circulation pump for cylinder heating
7
Heating circuit with mixer M2 (heating circuit 2)
8
Flow temperature sensor M2
9
Heating circuit pump M2
qP
Required codes
Multi boiler system with Vitotronic 300-K
Note
For codes for multi boiler systems, see Vitotronic 300-
K installation and service instructions

Adjusting the heating curves (only for weather-compensated control units)

The heating curves illustrate the relationship between
the outside temperature and the boiler water or flow
temperature.
To put it simply, the lower the outside temperature, the
higher the boiler water or flow temperature.
The boiler water or flow temperature in turn affects the
room temperature.
Settings in the delivered condition:
■ Slope = 1.4
■ Level = 0
44
2 3
1
qI
qU
4 4
qW
8
qE
9
qR
qP qT
qQ qZ
M M
Extension kit, mixer M2
qQ
Heating circuit with mixer M3 (heating circuit 3)
qW
Temperature limiter to restrict the maximum tem-
qE
perature of underfloor heating systems
Flow temperature sensor M3
qR
Heating circuit pump M3
qT
Extension kit, mixer M3
qZ
Low loss header
qU
Flow temperature sensor, low loss header
qI
Note
If the heating system includes heating circuits with mix-
ers, then the flow temperature of the heating circuit
without mixer is higher by a selected differential (8 K in
the delivered condition) than the flow temperature of
the heating circuits with mixers.
The differential temperature is adjustable via coding
address "9F" in the "General" group.
(cont.)
Address
01:2