258
1.2 Design Precautions
Power Proportional Distribution (P.P.D.)
(3) Calculation of electric power (Crankcase heater / PC Board power consumption) at stopping
1. In the case of calculation for crank case heater and PC Board when not in operation.
(1) The electric power consumed by crank case heater of the outdoor unit is divided by the capacity of each indoor
unit.
N.B. The calculation also includes the indoor units which are not in operation. (eg.vacant)
2. In the case of not calculating for crank case heater and PC Board when not in operation.
(1) It is possible to exclude the power consumed by crank case heater and PC Board.
Therefore the power won’t be added to each indoor unit.
(4) Setting of electric power group
It is possible to distribute the electric energy with one kWh meter if all groups are of the same design and indoor/outdoor
units are of the same size as each other group respectively. (different A.C. systems cannot be from the same meter)
1.2.2 Setting of Each Electric Power Group
Although the iPU unit allows electric energy distributing with one integrating watthour meter, if some/many integrating
watthour meters are connected as shown below, the electric energy distributing accuracy can be improved.
Group 1
VRV
Group 2
VRV
Heat
Recovery
DIII-NET
4
Integrating watthour
meter
Integrating watthour
meter
G
1
2
3
4
G
G
5
6
7
8
Di-1 Di-2 Di-3 DIII-1
1 2 3 4 5 6 F1 F2
Содержание D-BACS
Страница 1: ...ED 72 721 Preliminary Daikin Buildings Air conditioning Control System D BACS DESIGN GUIDE ...
Страница 17: ...xvi 1 5 Open Network Glossary Introduction ...
Страница 41: ...24 Outline of D BACS System ...
Страница 74: ...57 Remote Controllers HRV Wired remote controller BRC301B61 VAM ...
Страница 88: ...3 6 Wired Remote Controller with Weekly Schedule Timer BRC1D61 71 Remote Controllers 3P107422 3D ...
Страница 102: ...5 2 Wireless Remote Controller BRC4C 7C 7E 85 Remote Controllers 5 2 Wireless Remote Controller BRC4C 7C 7E ...
Страница 103: ...86 5 3 Simplified Remote Controller BRC2C51 BRC2A51 Remote Controllers 5 3 Simplified Remote Controller BRC2C51 BRC2A51 ...
Страница 107: ...90 5 4 HRV BRC301B61 Remote Controllers ...
Страница 142: ...1 2 System Configuration 125 Control Devices 1 2 System Configuration System Outline ...
Страница 181: ...164 3 8 Error Diagnosing Function Control Devices ...
Страница 215: ...198 3 8 Wiring Example intelligent Manager ...
Страница 235: ...218 Interface for Use in BACnet ...
Страница 249: ...232 7 1 Node Objects Interface for use in LONWORKS 7 Object Details 7 1 Node Objects 7 2 DIII NET Common Objects ...
Страница 253: ...236 Interface for use in LONWORKS 10 Reference Materials Error Code Conversion Table ...
Страница 268: ...251 Interface for use in LONWORKS 13 Workflow ...
Страница 285: ...268 1 6 Notes Power Proportional Distribution P P D ...
Страница 319: ...302 1 5 Dio Unit DEC102A51 Adaptor 1 5 2 Part Names and Functions 1 Appearance Dio Unit DEC102A51 ...
Страница 329: ...312 1 6 Di Unit DEC101A51 Adaptor 1 6 2 Part Names and Functions 1 Appearance Di Unit DEC101A51 ...