2022-133-E-AMS-Warren Hay Mechanical Contractors-Emergency Services Warehouse Dehumidification

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ORANGE COUNTY 230511 - 4 Emergency Management Warehouse Building Dehumidification Electrical Provisions for HVAC Work Auxiliary Contacts: Provide two sets of normally open auxiliary contacts and two sets of normally closed auxiliary 1 contacts. 2 3 Provide additional sets of normally open and/or normally closed auxiliary contacts is such are required to 4 accomplish control functions as defined by the drawings or required by specified control and interlock 5 sequence(s). 6 7 Provide additional sets of contacts as required to operate pilot lights as described elsewhere. Contacts 8 required to operate pilot lights are not shown on the Drawings. Contacts required to operate pilot lights 9 are to be furnished at no additional cost. 10 11 Accessories on Cover: Provide the following accessories on the combination starter cover. 12 13 Reset Pushbutton 14 15 Hand-Off-Automatic (HOA) Switch 16 17 Push to Start Switch 18 19 Pilot Lights on Cover: Pilot lights are to be transformer types, configured to operate from the same voltage as the 20 motor starter coil. Provide the following pilot lights on the starter cover. 21 22 Red Pilot Light, illuminated when starter is energized 23 24 Green Pilot Light, illuminated when starter is not energized 25 26 Disconnect Auxiliary Contacts: Provide 2 pole disconnect auxiliary contacts for control circuits where control circuits 27 are provided from a separate electrical source. 28 29 Coils: Provide starters with operating coils for 120 volts. 30 31 Control Transformer: Provide control transformer having a primary voltage rating to match the line-to-line voltage of 32 the motor supplied by the starter and a secondary voltage to match the voltage of the starter coil. Size control 33 transformer to supply the starter and all pilot devices supplied with a 25% reserve capacity for additional pilot devices. 34 35 Provide NEMA-rated enclosure type suitable for its environment as required by Section 230511. 36 37 38 COMBINATION MOTOR STARTERS 39 40 General: Combination starters may be used in lieu of separate disconnect and motor starter. Provide 41 surface-mounted, heavy duty, steel enclosed combination motor starters meeting requirements described for motor 42 starters. Provide combination motor starters with NEMA size rating, voltage rating, current rating, and number of 43 poles indicated on the Drawings. 44 45 Circuit Breakers: Provide factory-assembled, molded-case circuit breakers with permanent instantaneous magnetic 46 trips in each pole, with fault-current interrupting rating suitable for application and ampere ratings as indicated. 47 Circuit breaker ratings must be clearly visible when the compartment door is open without the necessity of removing 48 operating mechanisms or similar items to obtain visibility. Where adjustable circuit breakers are provided, such 49 adjustments must be also be readily accessible once the compartment door is opened. Provide push-to-trip feature 50 for testing and exercising circuit breaker trip mechanism. Construct breakers for mounting and operating in any 51 physical position and in ambient temperature of 40 C. Provide with AL/CU rated screw type removable connector 52 lugs. Field coordinate all circuit breaker sizes with equipment nameplate ratings prior to purchase. 53 54 Disconnect Operators: Provide external operator handles for circuit breakers. Design handle with up-down motion 55 and with down position indicating “OFF." Combination Motor Starters with rotary type circuit breaker operators are 56 not acceptable. Construct handles which permit locking handle in “ON” or “OFF” position with a hasp-type padlock. 57 58 59 DocuSign Envelope ID: 7668B866-6C26-485C-9A45-DAAB5D4BD951