Carel MasterAria, User Manual

Page: 47 / 60

47
ENG
MasterAria +030220481 - rel. 1.0 - 12.11.2007
Table of dipswitch settings
function n. function setting position
heat,cool-enable functions 1 deactivated OFF
remote cooling/heating (DI2) 2 activated ON
remote lock active 3 deactivated OFF
2 coils available 4 deactivated OFF
electric heater fi tted 5 deactivated OFF
control probe on “acqua”
terminal
6 activated ON
Tab. 5.c
Description of the functions
The hot/cold water valve is opened according to the activation delta
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(default =0 ) and the P+I algorithm proportional bands;
the outside damper is activated when the air handling unit starts. It
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closes in the event of antifreeze alarms, activated by digital input DI4;
the recirculation damper is managed with the same output as the
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outside damper, as operation is complementary (the connection is the
installer’s responsibility);
dirty fi lter alarm via diff erential pressure switch connected to digital
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input DI5.
Functional diagrams
U
S S
VF VC
P114=30
P116=30
100%
P01
TA (°C)
P109=2
P114=30
P115=30
P109=2
P119=20
Fig. 5.k
Important: drawing not to scale for graphics requirements.
Key:
P114 proportional band for damper (°C/10) S outside damper
P115 proportional band for cooling valve (°C/10) TA room temperature (control probe)
P116 proportional band for heating valve (°C/10) VC heating valve
P109 dead band (°C/10) VF cooling valve
P01 set point U outputs
General warnings
The required applications may diff er from systems 1, 2, 3. Make the
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desired settings by modifying the parameters shown in columns “Def1,
Def2 and Def.3” respectively of the table of parameters;
the digital signals cannot be checked. If the digital input has an
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important protection function, such as the antifreeze function, it is
recommended to confi gure the input so that an alarm is generated
when there is no signal (not wired). Set as normally closed;
if control is unstable, increase the proportional band and the integration
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time.