Reso 2024-3716 - Laserfiche WebLink

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Docusign Envelope ID: 41 F63DOF-3BC8-4149-8618-1 BBEEF49D6F7 Subject Schindler Elevator Modernization Proposal - LSUN-DSPJUJ Page 21 of 31 Date 6/4/2024 B. Provide one normally open dry contact (pre -transfer) to close 30 to 60 seconds prior to transfer to emergency power or back to normal power. This contact should reopen immediately after actual transfer of power. This is to prevent transfer of power while an elevator is moving, which can occur during the return to normal power or on an operating test. Provide two #12 AWG wires. Note: When operating elevators on emergency power, a means of absorbing the regenerative energy may be necessary and shall be provide by others. It is required that the car light, the fan circuits, ascending car protection circuit and the intercom circuit (if supplied), be set to operate from the emergency power supply in accordance with the building code. The SCCR rating of elevator equipment is 5000 Amps, contractor to ensure that the available fault current of the building supply at the service switch does not exceed this value (Per NEC 110.10). Contractor to include a label (please see figure 2- Available Fault Current Label Example) that identifies the Max Available Fault Current onto Disconnect. A. See Note 1 of Figure 2, Available Fault Current Labelling Diagram. In addition, we require a hard copy of the manufacturers Fuse Chart and rating verifying the available fault current meets requirements. B. Per NEC 110.24, the service switch should be legibly marked with Apparent RMS Symmetrical fault current supplying the Elevator Equipment. **See note 3 of AVAILABLE FAULT CURRENT RATING LABELLING DIAGRAM. NETWORK CONNECTION REQUIREMENT FOR TWO-WAY VISUAL COMMUNICATION DEVICE (A17.1-2019 / B44-19 or IBC 2018) A. Where the elevator rise is 18m (60 ft) or more, or seismic operation is provided according to A17.1-2016 or later requirements, a single RJ45 wired Ethernet communications circuit shall be provided by the building. This Ethernet connection shall be located in the machine room associated with the Elevator Control Visual Alarm Box for the master elevator group. B. Where the elevator rise is below 18m (60ft), and seismic operation is not provided according to A17.1-2016 or later requirements, separately wired RJ45 Ethernet communications circuits, one per elevator group, shall be provided by the building. This Ethernet connection shall be located in the machine room associated with each Elevator Control Visual Alarm Box. C. The network must have enough bandwidth for connecting to multiple elevators and displaying a series of images with adequate resolution to identify the presence and general condition of passengers in the elevator. The recommended minimum upload speed is 0.5Mb/s per elevator connected to the communication system. Note that networks are commonly rated by their download speed with a lower upload speed. D. The communications circuit shall originate at the Elevator Control Visual Alarm Box, part of the two-way visual communication device designed by Schindler and terminate at the building WAN internet equipment routed via a 1" conduit. E. This internet connection is required to have an un -interruptible power supply for a duration of 4 hours to allow for the Visual Communication Device to function if building power is lost.