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13. Building Control System Interface (DataPortTM/ DataLINKTM): The chiller control system shall have the ability to interface and communicate directly to the building control system without the use of addi- tional field installed hardware and software. The building control system and the centrifugal chiller must be supplied by the same manufac- turer. If different building control and chiller suppliers are chosen the chiller shall be supplied with a DataPort or DataLINK module which shall translate the information in the chiller microprocessor to an ASCII stream of data which can be read or written to (with Datalink only) by any manufacturer's building manage- ment control system. 14. Optional Low-Voltage Unit Mounted Starter: (Not available on chiller heat exchanger size 8) An optional reduced voltage wye-delta or solid state starter shall be supplied. The compressor motor starter shall be factory mounted, wired and tested prior to shipment by the chiller man- ufacturer. Customer electrical connection for compressor motor power shall be limited to main power leads to the starter, and wiring water pumps and tower fans to the chiller con- trol circuit. a. NEMA 1 enclosure with integral fan cooling and lockable hinged doors. b. Main power disconnect (non-fused type). c. Capability to start and stop chiller, pumps and tower fans. d. 3 kva control/oil heater transformer. e. Branch circuit breaker for oil pump. f. Branch circuit breaker for control power and oil heater. g. The following standard features. 1) Phase loss 2) Phase reversal 3) Phase imbalance 4) 3-phase ground fault 5) Low Voltage — phase to phase and phase to ground 6) Medium Voltage — phase to ground 7) Current Overload 8) Current Flow while stopped. 9) 3-phase under/over voltage 10) 3-phase digital ammeter/voltmeter starter shall include 6 Silicon Controlled Rectifiers (SCRs) with integrally mounted bypass once the motor has achieved full volt- age and speed. The starter shall also display the following: 1) Starter On 2) Run (up to Voltage) 3) Phase Correct 4) Over Temperature Fault 5) SCR Gates Energized 6) Ground Fault 7) Current Imbalance Fault 8) Shorted SCR 15. Unit Mounted Variable Frequency Drive (VFD) — (With Built in Harmonic Filter — LiquiFloTM2): a. Design: 1) VFD shall be refrigerant cooled, micro- processor based, pulse width modulated design. Water cooled designs are not acceptable. 2) Input and Output power devices shall be Insulated Gate Bipolar Transistors (IGBTs). 3) Active Rectifier shall convert incoming fixed voltage / frequency to fixed DC voltage. Input current and voltage shall be regulated. 4) Transistorized inverter and control regu- lator shall convert fixed DC voltage to a sinusoidal PWM wave form. 5) Low voltage control sections and main power sections shall be physically isolated. 6) Integrated controls shall coordinate motor speed and guide vane position to optimize chiller performance over a wide variety of operating conditions. 7) Surge prevention and surge protection algorithms shall take action to prevent surge and move chiller operation away from surge. b. Enclosure: 1) Pre-painted unit mounted, NEMA 1 cab- inet shall include hinged, lockable doors and removable lifting lugs. 2) VFD shall have a short circuit interrupt and withstand rating of at least 65,000 amps. 3) Provisions to padlock main disconnect handle in the “Off” positions shall be provided. Mechanical interlock to pre- vent opening cabinet door with discon- nect in the “On” position or moving disconnect to the “ON” position while the door is open shall be provided. 4) Provisions shall be made for top entry of incoming line power cables. 11) Microprocessor protection 12) Watts 13) Power Factor 14) Frequency 15) Watt Demand 16) Watt Hour based overload trip h. Optional solid state starter (Not available on chiller heat exchanger size 8) shall provide stepless compressor motor acceleration. The 39PDF Image | Carrier Product Data 19XR,XRV High-Efficiency Hermetic Centrifugal Liquid Chiller 50/60 Hz HFC-134a 19XR — 200 to 1500 Nominal Tons (703 to 5275 kW) 19XRV — 200 to 800 Nominal Tons (703 to 2813 kW)
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Carrier Product Data 19XR,XRV High-Efficiency Hermetic Centrifugal Liquid Chiller 50/60 Hz HFC-134a 19XR — 200 to 1500 Nominal Tons (703 to 5275 kW) 19XRV — 200 to 800 Nominal Tons (703 to 2813 kW)Original File Name Searched:
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