Siemens LMS14 User Manual

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Building Technologies Division User Manual LMS14… CC1U7471en
6 The settings in detail 28.01.2015
6.13.5 Boiler sequence
Line no. Operating line
3540 Auto source seq ch'over
With automatic changeover of the heat source sequence, the boiler loads in a cascaded
system can be influenced by defining the order of lead and lag boiler.
Fixed order
Setting - - - defines a fixed order. In that case, the lead boiler can be selected via
Leading source (3544); the other boilers are then switched on and off in the same order
as the LPB device addresses.
Order according to the number of operating hours
On completion of the set number of operating hours, the boiler sequence in the
cascaded system changes. It is always the boiler with the next higher device address
which assumes the role of the lead boiler.
1st changeover 2nd changeover 3rd changeover 4th changeover
K 1
K 2
K 3
K 4
K 2
K 3
K 4
K 1
K 3
K 4
K 1
K 2
K 4
K 1
K 2
K 3
t [h]
100
300
400200
P [kW]
2379Z07
Lag boilers
Lead boilers
Figure 54: Boiler sequence – arranged according to hourly output
t = total number of operating hours of all lead boilers [h]
P = total output of cascaded system [kW]
A
uto source seq
ch'over

Siemens LMS14 Specifications

General

Brand	Siemens
Model	LMS14
Category	Control Unit
Language	English