1213 The environmental controller shall contro l fan operation. The fans shall activate at 80°F. The fans shall be NMB Model 4715FS-12T-B50-D00.
u.Enclosure Heaters Two 250 watt ceramic insulated strip heaters shall be furnished and installed in the cabinet to protect against condensation damage and to keep the electronic components above freezing in the winter. The strip heaters shall have a seamless stainless steel sheath with ceramic element support and magnesium oxide packing. The environmental controller shall control enclosure heater operation. Heating strips shall not be installed on either door. The heaters shall be 8 in. long by 1 1/2 in. wide 280 and shall have two wire terminals. The strip heaters shall be UL Recognized. The heaters shall be Hotwatt Model CS-8. (v) Heater Relays Two solid state SPST-NO heater relays shall be installed on the power distribution side panel. Load current range 0.04 to 25 amp, one-cycle surge 250 amp peak. Rated for 120 volt AC and UL Recognized. (w) Thermostats The cabinet shall be furnished with two thermostats installed. One thermostat 290 shall activate the enclosure heaters and ci rculating fan with the internal cabinet temperature goes below 35°F. The other thermostat shall activate the two circulating fans at the top of the cabinet when the in ternal cabinet temperature goes above 80°F. The thermostats shall be Thermodisc, Type AL-1.
x.Detector Card DIN Rail Terminal Blocks Double-deck compression clamp DIN rail terminal blocks shall be hard wired to the Canoga Card Racks. A total of 64 terminal blocks shall be mounted to an aluminum panel that is secured to the Electronic Indu stries Alliance rack. The terminal blocks shall allow wires between 24 AWG and 10 AWG. Each measures 2.5 in. by 0.2 in. 300 The terminal blocks shall be the Entretec part number 011527122 Type M 4/6 D2.
y.I/O Module An isolated 8-Bit digital input module shall be provided and installed. It shall have six fully isolated inputs and two share common ground inputs. High voltage inputs. Logic levels: LOW +1.0 volt DC max, HIGH +3.5 to +30 volt DC. Input impedance: 3 kohm. Input isolation: 3000 vrms. Power consumption: 0.4 watt. Operating temperature: 14°F to 158°F. The I/O module shall be a Measurement Computing, Model CB-7052. 310
z.Detector Card Rack The detector card rack shall be as shown on the plans. (aa) Padlocks Padlocks shall be classified as a high security padlock with hardened shackles, laminated body, a minimum four-pin cylinder, and come complete with a weather 925.04 1214 cover to protect the lock body and cylinder from sand, dirt, water, and ice. A wafer cylinder shall not be used. Keys shall not be provided with each padlock supplied. All padlocks shall be keyed alike and shall be keyed identical to the keys currently in use by the Department. The main body width of the padlock shall not exceed 3 in. and 320 shall have a shackle length of 2 1/4 to 3 3/4 in. and a shackle diameter of 5/16 in. For padlock information, contact the ITS Operations Engineer. (bb) Other Cabinet Equipment In addition to the equipment specified abov e, the cabinet shall be furnished with all ancillary equipment, brackets, wiring ducts , and hardware as is necessary to provide a neat and finished appearance. These ite ms along with all associated cables, connectors, wiring, and other incidental items shall be labeled on the required submittal drawings. 330
925.05 Cabinet Wiring
All conductors used in ITS cabinet wi ring shall be in accordance with the following color-code requirements. (a) The AC neutral conductor of a circuit shall be identified by a continuous white or natural gray color.
b.The equipment grounding conductor shall be identified by a continuous green color or by a continuous green color with one or more yellow stripes. 340
c.The ungrounded conductors shall be identified by any color not specified in (a) or (b) above. All wire shall be Type THHN with color and gauge as shown on the plans, except the microloop card rack wiring which will be two-pair twisted with a shield and plenum rated. Connectors used for interconnecting various portions of circuits together shall be designed and constructed for the applicatio n involved. Connectors shall be designed 350 to provide positive connection of all circuits, and easy insertion and removal of mating contacts. Connections shall be permanently keyed to prevent improper connection of circuits.
925.06 Drawings The Contractor shall provide three sets of cabinet wiring diagrams. The diagrams shall be non-proprietary and shall identify all circuits, as installed, in such a manner as to be readily interpreted.
In addition, three cabinet drawings shall be provided with each cabinet to show 360 the component layout in elevation views from the front and rear. An elevation of both aluminum side panels shall also be shown. Elevation views are to be detailed down to 925.05 1215 the level showing mounting brackets and wiring ducts. All other mounting hardware and cable ties need not be shown. All cable s and connectors shall be clearly labeled. Any data sheets for internal cabinet components that have been made available by the manufacturer shall also be provided. One set of the wiring diagram and cabine t drawing shall be placed in a heavy-duty side-opening clear plastic pouch and inserted into the data pocket. The pouch shall be of such design and material that it pr ovides adequate storage and access to the 370 drawings. The other two sets of drawings shall be delivered to the attention of the ITS Field Engineer.
Source: Indiana Standard Specifications, 2024 Edition. Pages 1214–1216 of 1,248.