Daikin BRC1E52A Service Manual Page 101
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• Control systems
• intelligent Touch Manager • ED721208
2) Counting the electricity at the stopped condition of the unit
Even if a VRV is stopped or in the condition of thermostat -OFF (the condition that the compressors are stopped as the temperature
in the space where all the indoor units are installed falls down to the set temperature), the VRV consumes energy due to the energy
consumption mainly by the crankcase heater in the outdoor unit.
When the iTM is used, the rated power consumption of the crankcase heater is divided by the number of indoor units in usual
connection (for instance, two indoor units of 2.5 HP are connected to an outdoor unit of 5 HP etc.) and the value is registered at the
test operation, adapting each indoor unit’s capacity.
(Example)
RXYQ5P
(Crankcase heater's output=50W)
FXFQ80P×2
(Power consumption at no operation=50/2=25W)
The iTM counts the indoor unit’s operating conditions every 20 seconds.
SincetheindoorunitssendON/OFFdataofthecrankcaseheatertoiTM,itaddsone(+1)tothepowercounterinsideiTMatno
operation of the air-conditioner when the crankcase heater is ON.
When this counter reaches 180, it judges that the crankcase heater was ON for one hour, and in case of the above mentioned indoor
unit, the counter goes back to zero after 25 Wh is added to the counting result.
This calculation process is conducted separately from the proportional division computation mentioned on this section, and this input
is got rid of from the pulse input of the watthour meter. Because of this procedure, the power consumption in the space where the
air-conditioner is not used at all is counted constantly every month.
(However, as this air-conditioning system is a multi-system, in case that one outdoor unit is shared to another tenant, the count output
can be seen in lower value rather than the crankcase heater’s power consumption registered, because the crankcase heater does not
actuate when another tenant operates the VRV.)
- Technical Data 1
- TABLE OF CONTENTS 2
- CONTROL SYSTEMS 2
- • Survey of control systems 3
- Save energy 5
- BRC944B2*/BRC1D52 6
- ARC4*/BRC4*/BRC7* 6
- Specifications 7
- (Unit: mm) 10
- 3D038937 10
- 3D028963 10
- Dimensional drawing 11
- 3D013859A 12
- 3D050645 12
- Always in control 13
- Possible indoor units: 14
- Specications 15
- DCS302C51 16
- DCS301B51 16
- DST301B51 16
- 3D004872 17
- 3D049544 18
- Pattern 1 20
- Pattern 2 20
- Length of transmission wiring 22
- Features & Outline 27
- Main Functions 27
- Electric wiring 28
- Features 29
- System overview 31
- Part Names - Connection 32
- Dimensions 37
- System wiring 37
- Function and Outline 38
- File Format 39
- Integration with 41
- User friendliness 42
- Flexibility 42
- Smart energy management 42
- Functions overview 42
- 2. Functions & Options 43
- 2.2. Options 44
- 3. Specications 45
- Rear face 46
- Front panel 47
- Side face 48
- 3.1.3. Required space 49
- 3.1.4. Connections 50
- Requirements that must be met 51
- Connecting a LAN cable 52
- Connecting I/O module 54
- 3.2. iTM plus adaptor 57
- 3.2.1.1 Dimensions 58
- 100-240V 59
- Required space 60
- Environmental conditions 60
- 3.2.3. Connections 61
- NET port 65
- 3.3. iTM Integrator 67
- 3.3.3. Required space 71
- 3.3.4. Connections 72
- 4. Accessories 75
- Part Names and Functions 76
- Installation 78
- DEC101A51 DEC101A51 79
- Electric wiring work 80
- Initial setting 81
- Wiring Procedure 83
- • Dio Unit (DEC102A51) 84
- Electric Wiring Work 92
- Electric Wiring Connection 95
- System Architecture 96
- Design Precautions 97
- Not allowed with 1 unit ! 99
- • Control systems 100
- FXFQ80P×2 101
- Count Accuracy 102
- BEV unit 104
- Super Wiring (DIII-NET) 104
- Outdoor unit 104
- Reference Material 105
- 1-01 1-02 1-03 106
- OFF units 107
- Features of DIII-NET 108
- Terminal Number 108
- Connection Method 109
- Wiring Example 110
- Wiring Length 112
- Cautions: 113
- Unit and Group 114
- 2-unit module 3-unit module 115
- Integration of 117
- Overview functions 118
- KNX interface for 119
- Applied systems network 120
- VRV network 120
- Air handling unit network 120
- BACnet interface for VRV 121
- 3D056945 122
- Communications Check Sheet 123
- Function 124
- Wiring and Setting Procedures 126
- LowWorks Interface for VRV 129
- Applicable Models 130
- Specifications 130
- Accessories 130
- 3D040974 132
- DMS504B51 132
- Air Conditioning 133
- ACNSS energy saving 134
- ACNSS monitoring 134
- COMFORT MAINTAINED 134
- Simplied 135
- easy installation 136
- Dimensions (HxW) mm 60 x 50 137
- Weight g 300 137
- Length of branch wiring m 12 137
- Concept and benefits 138
- EEDE N1 3- 204 139
- EEDE N1 3- 100 139
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