User Manual

85
Definition of classes
Residential Non residential
D C B A D C B A
AUTOMATIC CONTROL
3 COOLING CONTROL
3.1
Emission control
The control function is applied to the emitter (cooling panel, fan-coil unit or indoor unit) at room level; for
type 1 one function can control several rooms
0 No automatic control
1 Central automatic control
2 Individual room control
3 Individual room control with communication a a
4 Individual room control with communication and occupancy
detection (not applied to slow reacting cooling emission
systems, e.g. floor cooling)
a In case of slow reacting (heat and) cool emission systems, e.g. floor heating, wall heating, etc. functions
(1.1.3 and) 3.1.3 are allocated to BAC class A.
3.2 Emission control for TABS (cooling mode)
0 No automatic control
1 Central automatic control
2 Advanced central automatic control
3 Advanced central automatic control with intermittent operation
and/or room temperature feedback control
3.3 Control of distribution network chilled water temperature (supply or return)
Similar function can be applied to the control of direct electric cooling (e.g. compact cooling units, split
units) for individual rooms
0 Constant temperature control
1 Outside temperature compensated control
2 Demand based control
3.4 Control of distribution pumps in networks
The controlled pumps can be installed at different levels in the network
0 No automatic control
1 On off control
2 Multi-Stage control
3 Variable speed pump control (pump unit (internal) estimations)
4 Variable speed pump control (external demand signal)
3.5 Intermittent control of emission and/or distribution
One controller can control different rooms/zones having same occupancy patterns
0 No automatic control
1 Automatic control with fixed time program
2 Automatic control with optimum start/stop
3 Automatic control with demand evaluation
3.6 Interlock between heating and cooling control of emission and/or distribution
0 No interlock
1 Partial interlock (dependent on the HVAC system)
2 Total interlock
3.7 Different chillers selection control for cooling
The goal consists generally in maximizing the chiller operation temperature
0 Constant temperature control
1 Variable temperature control depending on outside
temperature
2 Variable temperature control depending on the load