Adjusting The Circulation Pump To The Heating System - Viessmann VITODENS 100-W Installation And Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps
Correction factor
Balanced flue operation
7 60/100 mm coaxial
Observe max. flue lengths. A calculated
performance verification is required if the
max. flue lengths in the table are excee-
ded.

Adjusting the circulation pump to the heating system

In the delivered condition, the circulation
pump in heating mode is set to stage 1.
If necessary to suit the heating system,
the circulation pump can be changed
over to stage 2.
700
600
500
400
40
30
300
20
200
10
100
0 200
Flow rate in l/h
A Gas condensing combi boiler
26 kW, pump stage 1
B Gas condensing combi boiler 30
and 35 kW, pump stage 1
C Gas condensing combi boiler
26 kW, pump stage 2
24
21
25
A
400 600 800 1000 1200 1400
1 2
2 6 10
1 4
E
D
C
B
D Gas condensing combi boiler 30
and 35 kW, pump stage 2
E Upper operational limit
1. Turn ON/OFF switch on.
(cont.)
3 4 5
13 16
7 10 12
6
19
13.5