User Manual

33
AUTOMATIC CONTROL
1 HEATING CONTROL BT Reason for energy savings
1.5 Intermittent control of emission and/or distribution
One controller can control different rooms/zones
having same occupancy patterns
0
No automatic control No savings, since emission and/or distribution
are permanently in operation.
1
Automatic control with fixed time program
To lower the operation time
Savings in emission and/or distribution outside
the nominal operating hours.
2
Automatic control with optimum start/stop
To lower the operation time
Additional savings in emission and/or
distribution by continuously optimizing the plant
operating hours to the occupancy times.
3
Automatic control with demand evaluation
To lower the operation time
The operating time for emission and/or
distribution is determined based on consumer
demand. This can be accomplished via the
operating mode (Comfort, PreComfort,
Economy, Protection).
1.6 Generator control for combustion and district heating
The goal consists generally in minimizing the
generator operation temperature
0
Constant temperature control The generator continuously provides the
highest design temperature of all consumers,
resulting in significant energy losses under part
load conditions.
1
Variable temperature control depending on
outdoor temperature
Generation temperature is controlled
depending on the outside temperature
(corresponding to the probable temperature
demand of the consumers), considerably
reducing energy losses.
2
Variable temperature control depending on the
load:
E.g. depending on supply water temperature
Generation temperature is controlled
depending on the effective heat demand of the
consumers, keeping energy losses at the
generator to an optimum (low).
1.7 Heat generator control (heat pump)
The goal consists generally in minimizing the heat
generator operation temperature and by this in
maximizing the heat generator efficiency
9
0
Constant temperature control Generation temperature is controlled
depending on the outside temperature
(corresponding to the probable temperature
demand of the consumers), thus increasing the
COP.
1
Variable temperature control depending on
outside temperature
Generation temperature is controlled
depending on the effective temperature
demand of the consumers, keeping the COP at
an optimum (high).
2
Variable temperature control depending on the
load:
E.g. depending on supply water temperature
setpoint
Priority control adapts current generation
output (with priority to renewable forms of
energy) to current load in an energy-efficient
manner.