Daikin DCM014A51 - Page 12

6. Programming Notes
12 Quick User Guide DCM014A51
EXAMPLE 2 - Cool SP
Step
BMS
BACnet® Server in ITM
Management Point in ITM
Pre-condition
•
Cool SP range: 70-78°F
•
Cool SP: 72°F
•
Cool SP range: 70-78°F
•
Cool SP: 72°F
#1
• Sets Cool SP 68°F
• PV: 68°F, previous PV: 72°F
• Start 10-min timer
#2
• Sends 68°F to Management Point
• Cool SP 68°F is rounded to 70°F due to Cool
SP range 70-78°F
• Cool SP: 70°F (Changed)
#3
•
PV 70°F
•
Reset 10-min timer
• Sends 70°F to BACnet® Server
#1
• Sets Cool SP 68°F
again
• PV: 68°F, previous PV: 70°F
• Start 10-min timer
#2
• Sends 68°F to Management Point
• Cool SP 68°F is rounded to 70°F due to the
Cool SP range 70-78°F
• Cool SP: 70°F (No change)
#3
• When 10-min timer expires, PV back to
70°F
EXAMPLE 3 – Operation mode to Changeover slave unit
Step
BMS
BACnet® Server in ITM
Management Point in ITM
Indoor Unit
Pre-condition
• Operation mode: Cool
• Operation mode: Cool
• Operation mode: Cool
#1
•
Sets
Operation
mode Fan
•
PV: Fan,
previous PV: Cool
•
Start 10-min timer
#2
• Sends Fan mode to
Management Point
• Send Fan mode to Indoor Unit
• Accepts Fan mode
• Status update to ITM as
Operation mode Fan
#3
• PV Fan
• Reset 10-min timer
• Operation mode: Fan
(Changed)
•
Send Fan to BACnet® Server
#1
• Sets
Operation
mode Heat
• PV: Heat,
previous PV: Fan
•
Start 10-min timer
#2
• Sends Heat to Management
Point
• Send Heat to Indoor Unit
• Cannot accept Heat due
to changeover slave unit
• Operation mode: Fan (No
change)
• Periodical status report
to ITM as Operation
mode Fan
#3
• When 10-min timer expires,
PV back to Fan