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Daikin EWWD800I-SS [48/51] Specification text
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• Single Unit • Water cooled chiller, standard efficiency • EWWD-I-SS
1
10
• Hydronic Systems • Single Unit
48
10 Specification text
10 - 1 Specification Text
SPC_1-2-3_Rev.00_2
CHILLER COMPONENTS
Compressors
3 Semi-hermetic, single-screw type with one main helical rotor meshing with gaterotor. The gaterotor will be constructed
of a carbon impregnated engineered composite material. The gaterotor supports will be constructed of cast iron.
3 The oil injection shall be used in order to get high EER (Energy Effi ciency Ratio) also at high condensing pressure and
low sound pressure levels in each load condition.
3 Refrigerant system differential pressure shall provide oil fl ow throught service replaceble, 0.5 micron, full fl ow, cartridge
type oil fi lter internal to compressor.
3 Refrigerant system differential pressure shall provide oil injection on all moving compressor parts to correctly lubricate
them. Electrical oil pump lubricating system is not acceptable.
3 The compressor’s oil cooling must be realized, when necessary, by refrigerant liquid injection. External dedicated
heat exchanger and additional piping to carry the oil from the compressor to heat exchanger and viceversa will not be
accepted.
3 The compressor shall be provided with an external, high effi ciency, cyclonic type oil separator and with built-in oil fi lter,
cartridge type.
3 The compressor shall be direct electrical driven, without gear transmission between the screw and the electrical motor.
3 Shall be present two thermal protection realized by a thermistor for high temperature protection: one temperature sensor
to protect electrical motor and another sensor to protect unit and lubricating oil from high discharge gas temperature.
3 The compressor shall be equipped with an electric oil-crankcase heater.
3 Compressor shall be fully fi eld serviceable. Compressor that must be removed and returned to the factory for service
shall be unacceptable.
Cooling capacity control system
3 Each unit will have a microprocessor for the control of compressor slide valve’s position and the instantaneous RPM
value of the motor.
3 The unit capacity control shall be infi nitely modulating, from 100% down to 25% for each circuit (from 100% down to
12.5% of full load for unit with 2 compressors and 8.3% for units with 3 compressors). The chiller shall be capable of
stable operation to a minimum of 12.5% of full load without hot gas bypass.
3 Step unloading unacceptable because of evaporator leaving water temperature fl uctuation and low unit effi ciency at
partial load.
3 The system shall stage the unit based on the leaving evaporator water temperature that shall be controlled by a PID
(Proportional Integral Derivative) loop.
3 Unit control logic shall manage frequency level of the compressor electric motor to exactly match plant load request in
order to keep constant the set point for delivered chilled water temperature. In this operating condition unit control logic
shall modulate electrical frequency level in a range lower and upper the nominal electrical network value fi xed at 50 Hz.
3 The microprocessor unit control shall detect conditions that approach protective limits and take self-corrective action
prior to an alarm occurring. The system shall automatically reduce chiller capacity when any of the following parameters
are outside their normal operating range:
o High condenser pressure
o Low evaporation refrigerant temperature
o High compressor motor amps
Evaporator
3 The units shall be supplied with shell and tubes counter-fl ow heat exchanger with single refrigerant pass. It will be
refrigerant direct expansion type with refrigerant inside the tubes and water outside (shell side). It will include carbon
steel tube sheets, with straight copper tubes internally wound for higher effi ciencies, expanded on the tube plates.
3 The evaporator will have 2 circuits, one for each compressor and shall be single refrigerant pass.
3 The water connections shall be VICTAULIC type connections as standard to ensure quick mechanical disconnection
between the unit and the hydronic network.
3 Evaporator is manufactured in accordance to PED approval.
Содержание
- Chillers 1
- Commercial and technical data 1
- Ewwd i ss 330 1 500 kw 1
- About daikin 2
- Daikin has a worldwide reputation based on over 85 years experience in the successful 2
- High with eer up to 5 2 and eseer up to 6 1 each unit is equipped with one two or three 2
- New daikin ewwd i water cooled chiller range with upgraded controller 2
- Production and testing as well as aftersales support to this end every component is carefully 2
- Use daikin s much envied quality quite simply stems from the close attention paid to design 2
- Chiller features 3
- Table of contents 3
- Technical data 5 3
- 330 1 500kw allowing project solutions for an extensive range 4
- Application flexibility 4
- Chiller features 4
- Compact design for indoor installations 4
- Extensive option list 4
- Large operation range 4
- Superior control logic 4
- The ewwd i series features a compact design ideal for easy 4
- The ewwd i series is available in a wide range of capacities 4
- The most commonly serviced parts are easily accessible simplifying 4
- The new microtech iii controller provides an easy to use control 4
- Features 5
- Hydronic systems single unit 5 5
- Single unit water cooled chiller standard efficiency ewwd i ss 5
- 1 technical specifications 6
- Specifications 6
- 1 technical specifications 7
- Specifications 7
- 2 electrical specifications 8
- Specifications 8
- 1 nomenclature 9
- Nomenclature 9
- 1 cooling capacity tables 10
- Capacity tables 10
- 1 cooling capacity tables 11
- Capacity tables 11
- 1 cooling capacity tables 12
- Capacity tables 12
- 1 cooling capacity tables 13
- Capacity tables 13
- 1 cooling capacity tables 14
- Capacity tables 14
- 1 cooling capacity tables 15
- Capacity tables 15
- 1 cooling capacity tables 16
- Capacity tables 16
- 1 cooling capacity tables 17
- Capacity tables 17
- 1 cooling capacity tables 18
- Capacity tables 18
- 2 partial heat recovery capacity tables 19
- Capacity tables 19
- 3 total heat recovery capacity tables 20
- Capacity tables 20
- 3 total heat recovery capacity tables 21
- Capacity tables 21
- 3 total heat recovery capacity tables 22
- Capacity tables 22
- 3 total heat recovery capacity tables 23
- Capacity tables 23
- 3 total heat recovery capacity tables 24
- Capacity tables 24
- 3 total heat recovery capacity tables 25
- Capacity tables 25
- 1 dimensional drawings 26
- Dimensional drawings 26
- 1 dimensional drawings 27
- Dimensional drawings 27
- 1 dimensional drawings 28
- Dimensional drawings 28
- 1 sound level data 29
- Sound data 29
- 1 sound level data 30
- Sound data 30
- 1 installation method 31
- Installation 31
- 1 operation range 32
- Operation range 32
- 1 operation range 33
- Operation range 33
- 1 operation range 34
- Operation range 34
- 1 operation range 35
- Operation range 35
- 1 operation range 36
- Operation range 36
- 1 water pressure drop curve evaporator condenser 37
- Hydraulic performance 37
- 2 partial heat recovery pressure drop 38
- Hydraulic performance 38
- 3 total heat recovery pressure drop 39
- Hydraulic performance 39
- 1 specification text 40
- Specification text 40
- 1 specification text 41
- Specification text 41
- 1 specification text 42
- Specification text 42
- 1 specification text 43
- Specification text 43
- 1 specification text 44
- Specification text 44
- 1 specification text 45
- Specification text 45
- 1 specification text 46
- Specification text 46
- 1 specification text 47
- Specification text 47
- 1 specification text 48
- Specification text 48
- 1 specification text 49
- Specification text 49
- Daikin products are distributed by 51
- Ecd_012 424a indd 6 10 5 2012 14 13 46 51
- Ecden12 424 cd 05 12 copyright daikin the present publication supersedes ecden11 424 51
- Naamloze vennootschap zandvoordestraat 300 b 8400 oostende belgium www daikin eu be 0412 120 336 rpr oostende 51
- Prepared in belgium by lannoo www lannooprint be a company whose concern for the environment is set in the emas and iso 14001 systems 51
- Responsible editor daikin europe n v zandvoordestraat 300 b 8400 oostende 51
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