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Vol 2 - Garney Construction

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SECTION 23 09 13HVAC CONTROLS, FIELD COMPONENTS, AND INSTRUMENTSPART 1GENERAL1.01 GENERALA. This section is a supplement to Section 23 09 00, Instrumentation and ControlDevices for HVAC.B. The requirements of this section shall be provided in addition to those listed inSection 23 09 00, Instrumentation and Control Devices for HVAC.PART 2PRODUCTS2.01 ELECTRIC THERMOSTATSA. Dead Band Thermostat:1. Dual movement, one for cooling control and one for heating.2. Adjustable dead band centered at nominal temperature of 73 degrees F.3. Range 50 to 100 degrees F.4. For any particular dead band selected, thermostat shall react totemperatures above and below that band, while within that band it shallmaintain signal that produces neither cooling nor heating.2.02 MISCELLANEOUS DEVICESA. General:1. RTD to voltage (0- to 5-volt) converters with zero span adjustments foruse with analog inputs.2. Limited range thermistors are acceptable provided they sense expectedrange for point at specified accuracy with 0- to 5-volt output.3. Auxiliary contacts in each motor starter, Work of Division 26,Electrical.4. START/STOP relay module for either momentary or maintained switchaction as indicated.B. Flow Switch, Air:1. General:a. Function: Monitor process air flowrate. Provide contact closurewhen flowrate exceeds setpoint.b. Type: Thermal dispersion.PW/WBG/382059HVAC CONTROLS, FIELDAUGUST 15, 2012COMPONENTS, AND INSTRUMENTS©COPYRIGHT 2012 CH2M HILL 23 09 13 - 1

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