SECTION 15973

PNEUMATIC CONTROL SYSTEMS

PART 1 GENERAL

SECTION INCLUDES

Air compressor and receiver.

Compressed air piping.

Refrigerated air dryer.

Thermostats.

Humidistats.

Control valves.

Automatic dampers.

Damper operators.

Highest/lowest/averaging signal selector.

Multi-purpose positioning relays.

Time clocks.

Transmitters.

Receiver controller.

Miscellaneous accessories.

Control panel.

Alarm system.

PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

Section 15510 - Hydronic Piping: Installation of control valves, flow switches, temperature sensor sockets, gage taps.

Section 15520 - Steam and Steam Condensate Piping: Installation of control valves, flow switches, temperature sensor sockets, gage taps.

Section 15910 - Ductwork Accessories: Installation of automatic dampers.

PRODUCTS INSTALLED BUT NOT FURNISHED UNDER THIS SECTION

Section 15658 - Reciprocating Refrigerant Compressors:

Connection of cylinder unloaders.

Section [_____ - __________]: Connect control components factory supplied as part of equipment controlled, unless specified otherwise.

RELATED SECTIONS

Section 15140 - Supports and Anchors.

Section 15242 - Vibration Isolation.

Section 15975 - Direct Digital Control Systems.

Section 15980 - Instrumentation: Thermometer sockets, gage taps.

Section 15985 - Sequence of Operation.

Section Section 16141 - Wiring Devices: Elevation of exposed components.

Section 16180 - Equipment Wiring Systems.

REFERENCES

AMCA 500 - Test Methods for Louvers, Dampers and Shutters.

ANSI/ASME B16.22 - Wrought Copper and Copper Alloy Solder Joint Pressure fittings.

ANSI/ASTM B32 - Solder Metal.

ANSI/NEMA 250 - Enclosures for Electrical Equipment (1000 Volts Maximum).

ANSI/NFPA 90A - Installation of Air Conditioning and Ventilation Systems.

ASTM B280 - Seamless Copper Tube for Air Conditioning and Refrigeration Field Service.

ASTM D1693 - Environmental Stress - Cracking of Ethylene Plastics.

FS-GG-G-76 - Gages, Pressure and Vacuum, Dial Indicating (for Air, Steam, Oil, Water, Ammonia, Chloro- Fluorohydrocarbon Gases, and Compressed Gases).

FS-QQ-S-571 - Solder, Tin Alloy; Tin-Lead Alloy; and Lead Alloy.

MIL-F-18280 - Fittings, Flareless Tube, Fluid Connection.

MIL-S-29175 - Switch, Thermostatic, Low Voltage, Non-(Setback/Setup) and Setback/Setup, Limiting: Heating, Cooling and Heating-Cooling.

NEMA DC 3 - Low-Voltage Room Thermostats.

SYSTEM DESCRIPTION

Provide control systems consisting of thermostats, control valves, dampers and operators, indicating devices, interface equipment and other apparatus and accessories required to operate mechanical systems, and to perform functions specified.

Provide pneumatic automatic temperature control systems with electric accessories.

SUBMITTALS

Submit under provisions of Section [01300.] [01340.]

Shop Drawings: Indicate complete operating data, system drawings, wiring diagrams, and written detailed operational description of sequences. For automatic dampers indicate arrangement, velocities, and static pressure drops for each system.

Product Data: Include description and engineering data for each control system component. Include sizing as requested.

Samples: Submit [two] [_____] of [each type of room thermostat and cover.] [thermostat guard.] [each exposed control component.]

Design Data: Submit design data indicating [sizing and selection of compressor.] [sizing of air tubing.] [__________.]

Submit manufacturer's certificate under provisions of Section [01400] [01405] that [products] [________] meet or exceed [specified requirements.] [____________________.]

Submittals of automatic control systems components which are not the product of the control system manufacturer shall bear evidence of his approval.

Submit manufacturer's installation instructions under provisions of Section [01300.] [01340.]

Submit manufacturer's field reports under provisions of Section [01400.] [01405.]

Submit field reports indicating operating conditions after detailed check out of systems at Date of Substantial Completion.

PROJECT RECORD DOCUMENTS

Submit record documents under provisions of Section [01700.] [01720.]

Accurately record actual location of control components, including panels, thermostats, and sensors.

Revise shop drawings to reflect actual installation and operating sequences.

OPERATION AND MAINTENANCE DATA

Submit operation and maintenance data under provisions of Section [01700.] [01730.]

Include systems descriptions, set points, and controls settings and adjustments.

Include inspection period, cleaning methods, recommended cleaning materials, and calibration tolerances.

QUALIFICATIONS

Manufacturer: Company specializing in manufacturing the products specified in this Section with minimum [three] [_____] years [documented] experience.

Installer: Company specializing in installing the work of this Section [with minimum [_____] years [documented experience.] [and approved by manufacturer.]

Design system under direct supervision of a Professional Engineer experienced in design of this work and licensed [at the place where project is located.] [in the State of [____________________].]

SEQUENCING AND SCHEDULING

Sequence work under the provisions of Section [01005.] [_____.]

Schedule work under the provisions of Section [01310.] [_____.]

Sequence work to ensure installation of components is complementary to installation of similar components in other systems.

Coordinate work under provisions of Section [01005] [01040] [01041], and ensure system is completed and commissioned by Date of Substantial Completion.

Coordinate installation of system components with installation of mechanical systems equipment such as air handling units and air terminal units.

WARRANTY

Provide [five] [_____] year warranty under provisions of Section [01700.] [01740.]

Warranty: Include coverage for [control air compressors.] [_________.]

MAINTENANCE SERVICE

Furnish service and maintenance of automatic controls system for [one] [_____] year from Date of Substantial Completion.

Provide [two] [four] [_____] complete inspections, to inspect, calibrate, and adjust controls as required, and submit written reports.

****** [OR] ******

Provide complete service of controls systems, including call backs. Make minimum of [_____] complete normal inspections of approximately [_____] hours duration in addition to normal service calls to inspect, calibrate, and adjust controls, and submit written reports.

EXTRA MATERIALS

Submit maintenance materials under provisions of Section [01700.] [01750.]

Provide [two] [_____] of each type thermostat [,] [and] [__________] under provisions of Section [01700.] [01750.]

PART 2 PRODUCTS

MANUFACTURERS

[______________________________] Product [_____________.]

[______________________________] Product [_____________.]

[______________________________] Product [_____________.]

Substitutions: Under provisions of Section [01600.] [01630.]

AIR SUPPLY

Air Supply and Receiver: [Simplex] [Duplex] belt driven air compressor and tank unit with belt guard, silencers, flexible connections, air filter, automatic and manual drain assemblies, oil and particle filter for minimum 0.5 micron particles, pressure reducing valves, and pressure relief valves. Size [each] compressor and storage tank to limit compressor starts to maximum [10] [_____] per hour and [50] [30] percent running time.

Pressure Control: Zinc or aluminum castings, rated for service with elastomeric diaphragm, adjustable electric contacts, set to start and stop compressor at [50 and 65 psig (340 and 445 kPa)] [60 and 80 psig (410 and 550 kPa)] [70 and 90 psig (480 and 620 kPa)] [100 and 125 psig (690 and 865 kPa)][.][,] [and second compressor at [50 and 65 psig (340 and 445 kPa)] [60 and 80 psig (410 and 550 kPa)] [70 and 90 psig (480 and 620 kPa)].]

Electrical Alternation Set: With motor starters to operate compressors [alternately.] [on time schedule.]

Pressure Regulators: Zinc or aluminum castings, rated for service with elastomeric diaphragm, balanced construction to automatically prevent pressure buildup, and producing flat, reduced pressure curve for system capacity demand.

Particle Filters: Zinc or aluminum castings, rated for service with threaded connections, quick-disconnect service devices, aluminum bowl or plastic bowl with metal guard equipped with manual draincock, to separate liquid and solid particles.

Combination Filter/Regulators: Zinc or aluminum castings, rated for service with elastomeric diaphragm, balanced construction to automatically prevent pressure buildup, and producing flat, reduced pressure curve for system capacity demand; with threaded pipe connections, quick-disconnect service devices, aluminum bowl or plastic bowl with metal guard equipped with manual draincock to separate liquid and solid particles.

Airborne Oil Filter: Rated for service with filtration efficiencies of 99.9 percent for particles of 0.025 micron or larger particles of airborne lubricating oil.

Pressure Relief Valves: ASME Code Rated and labeled for high pressure side and sized for installed capacity of pressure regulators at low pressure. Set at maximum 20 percent above low pressure.

CONTROL AND INSTRUMENTATION TUBING

Copper Tubing: ASTM B280, Type K, seamless, hard drawn or annealed.

Fittings: ANSI/ASME B16.22, wrought copper.

Joints: ANSI/ASTM B32 [or FS QQ-S-571 alloy 58-5] [95-5] [60-4] tin antimony.

Copper Tubing: ASTM B280, Type K, seamless, hard drawn or annealed.

Fittings: UL approved [to MIL-F-18280] rod or forged brass rated to 200 psig at 100 degrees F (1380 kPa at 38 degrees C).

Joints: Ball Sleeve compression type.

Polyethylene Tubing: Black, flame retardant, virgin polyethylene, conforming to modified ASTM D1693 test.

Fittings: UL approved [to MIL-F-18280] rod or forged brass rated to 200 psig at 100 degrees F (1380 kPa at 38 degrees C).

Joints: Compression or barbed type.

REFRIGERATED AIR DRYER

General Assembly: Self-contained, commercial quality, refrigerated, compressed air dryer complete with heat exchangers, moisture separator, and internal wiring and piping. Provide air inlet and outlet connections connected through manual by-pass valve.

Heat Exchangers: Air to refrigerant coils. Provide centrifugal type moisture separator located at discharge of compressed air complete with automatic trap assembly. Provide automatic control system to bypass refrigeration system on low or no load conditions.

Refrigeration Unit: Hermetically sealed, operating to maintain dew point of [5] [13] degrees F ([-15] [-10.5] degrees C) at 20 psig (138 kPa). House in steel cabinet with access door and panel.

Accessories: Air inlet temperature gage, air inlet pressure gage, on/off switch, high temperature light, power on light, refrigerant gage on back, air outlet temperature gage, air outlet pressure gage.

THERMOSTATS

Pneumatic Room Thermostats: Adjustable proportioning type, [single] [dual] setpoint, containing [single bimetallic element for heating or cooling only] [dual bimetallic elements for] [heating and cooling] [day or night], minimum 10 degrees F (6 degrees C) set point adjustment[.] [and] adjustable dead band.] Provide locking covers with [set point adjustment,] [setpoint indication,] [concealed setpoint,] [with thermometer.] [without thermometer.]

Electric Room Thermostats: [NEMA DC 3] Low voltage type [with setback/setup temperature control] for [cooling only.] [heating only.] [cooling and heating.] [Conform to MIL-S-29175.]

Line Voltage Thermostats: Integral manual On/Off/Auto selector switch, maximum dead band of 2 degrees F (one degree C) concealed temperature adjustment, and locking cover, rated for [motor] load, single or two pole as required.

Room Thermostat Accessories:

Thermostat Covers: [Brushed aluminum.] [_________.]

Insulating Bases: For thermostats located on exterior walls.

Thermostat Guards: [Metal] [Locking transparent plastic] [__________] mounted on separate base.

Adjusting Key: As required for device.

Outdoor Reset Thermostat: Remote bulb or bimetal rod and tube type, for proportioning action with adjustable throttling range; scale range of [-10 to 70 degrees F (2 to 35 degrees C)] [__________] with adjustable setpoint.

Immersion Thermostat: Remote bulb or bimetallic rod and tube type, for proportional action with adjustable setpoint and adjustable throttling range.

Airstream Thermostats: Remote bulb or bimetallic rod and tube type, for proportional action with adjustable setpoint in middle of range and adjustable throttling range. For averaging service provide remote bulb element [7.5 feet (2.3 m).] [20 feet (6 m).]

Electric Low Limit Duct Thermostat: Snap acting, single pole, single throw, manual reset switch which trips if temperature sensed across any 12 inches (300 mm) of bulb length is equal to or below setpoint, requiring minimum [20] [_____] feet ([6] [_____] m) length of bulb. Provide one thermostat for every 20 sq ft (1.86 sq m) of coil surface.

Electric High Limit Duct Thermostat: Snap acting, single pole, single throw, manual reset switch which trips if temperature sensed across any 12 inches (300 mm) of bulb length, is equal to or above setpoint, requiring minimum 20 feet (6 m) length of bulb. Provide one thermostat for every 20 sq ft (1.86 sq m) of coil surface.

Fire Thermostats: UL approved and listed, factory set in accordance with ANSI/NFPA 90A with normally closed contacts, manual reset.

Heating/Cooling Valve Top Thermostats: Proportional acting for proportional flow, molded rubber diaphragm, [remote bulb] liquid filled element, direct and reverse acting at differential pressures to 25 psig (172 kPa), cast housing with position indicator and adjusting knob.

HUMIDISTATS

Room Humidistats: Wall mounted, proportioning type, with adjustable [2] [5] percent relative humidity throttling range, operating range from [30 to 80] [_____] percent at temperatures up to [110] [_____] degrees F ([43] [_____] degrees C), cover with [set point indication.] [concealed setpoint.]

Duct Humidistats: Insertion type, proportioning type, with adjustable 2 percent relative humidity throttling range, operating range from 20 to 80 percent at temperatures up to 150 degrees F (65 degrees C).

High Limit Duct Humidistat: Insertion type, reverse acting, two position type, with differential maximum 2

percent relative humidity.

CONTROL VALVES

Globe Pattern:

Up to 2 inches (50 mm): Bronze body, bronze trim, rising stem, renewable composition disc, screwed ends[,][.] [with backseating capacity repackable under pressure.]

Over 2 inches (50 mm): Iron body, bronze trim, rising stem, plug-type disc, flanged ends, renewable seat and disc.

Butterfly Pattern: Iron body, [bronze] [aluminum bronze] [stainless steel] disc, resilient replaceable seat for service to [180 degrees F (82 degrees C)] [250 degrees F (121 degrees C)] wafer or long ends, extended neck.

Operators:

Rolling diaphragm, spring loaded, piston type with spring range [2 to 5 psig (15 to 35 kPa).] [3 to 10 psig (20 to 70 kPa).] [8 to 11 psig (55 to 75 kPa).] [as scheduled.]

Valves shall spring return to normal position as indicated on freeze, fire, or temperature protection.

Hydronic Systems:

Rate for service pressure of 125 psig at 250 degrees F (860 kPa at 121 degrees C).

Replaceable plugs and seats of [stainless steel.] [brass.]

Size for [3] [_____] psig ([20] [_____] kPa) maximum pressure drop at design flow rate.

Two way valves shall have equal percentage characteristics, three way valves linear characteristics. Size two way valve operators to close valves against pump shut off head.

Steam Systems:

Rate for service pressure of 125 psig at 250 degrees F (860 kPa at 121 degrees C).

Replaceable plugs and seats of stainless steel. Pressure drop across any steam valve at maximum flow shall be as shown on the Drawings.

Size for 10 psig (70 kPa) inlet pressure and 5 psig (35 kPa) pressure drop.

Valves shall have modified linear characteristics.

DAMPERS

Performance: Test in accordance with AMCA 500.

Frames: [Galvanized steel] [Extruded aluminum] [Rolled carbon steel] [Stainless steel], welded or riveted with corner reinforcement.

Blades: [Galvanized steel] [Extruded aluminum] [Rolled carbon steel] [Stainless steel], maximum blade size [8] [___] inches ([200] [___] mm) wide, 48 inches (1 200 mm) long, attached to minimum 1/2 inch (13 mm) shafts with set screws.

Blade Seals: [Synthetic elastomeric] [Neoprene] [inflatable] mechanically attached, field replaceable.

Jamb Seals: Stainless steel.

Shaft Bearings: [Oil impregnated sintered bronze or graphite impregnated nylon sleeve, with thrust washers at bearings.] [Lubricant free, stainless steel, single row, unground, flanged, radial, antifriction type with extended inner race.]

Linkage Bearings: Oil impregnated sintered bronze or graphite impregnated nylon.

Leakage: Less than [one] [1/2] percent based on approach velocity of 2000 ft/min (10 m/sec) and 4 inches wg (1.0 kPa).

Maximum Pressure Differential: 6 inches wg (1.5 kPa).

Temperature Limits: -40 to 200 degrees F (-40 to 93 degrees C).

DAMPER OPERATORS

General: Provide smooth proportional control with sufficient power for air velocities 20 percent greater than maximum design velocity and to provide tight seal against maximum system pressures. Provide spring return for two position control and for fail safe operation.

Pneumatic Operators: Rolling diaphragm piston type[.] [with adjustable stops.]

Pilot Positioners: Starting point adjustable from 2 to 12 psig (15 to 83 kPa) and operating span adjustable from 5 to 13 psig (35 to 90 kPa).

Electric Operators: Split phase type with oil immersed gear train.

Number: Sufficient to achieve unrestricted movement throughout damper range. [Provide one damper operator for maximum 36 sq ft (3.34 sq m) damper section.]

Inlet Vane Operators: High pressure with pilot positioners and sufficient force to move vanes when fan is started with vanes in closed position. Return vane operator to closed position on fan shutdown.

TIME CLOCKS

Seven day programming switch timer with synchronous timing motor and seven day dial, continuously charged Ni-cad battery driven power failure 8 hour carry over and multiple switch trippers to control systems for minimum of two and maximum of eight signals per day with two normally open and two normally closed output switches.

Solid state programmable time control with [_____] separate programs, 24 hour battery carry over[,][.] [duty cycling] [individual on/off/auto switches for each program] [7 day programming] [365 day calendar with 20 programmable holidays] [choice of fail safe operation for each program] [system fault alarm].

WATER TEMPERATURE CONTROLLERS

Operate on adjustable differential over adjustable temperature range and suitable for operating control valve provided.

TRANSMITTERS

Building Static Pressure Transmitter: One pipe, [direct acting, double bell,] differential type with temperature compensation, scale range 0.01 to 6.0 inch wg (2.5 to 1500 kPa) positive or negative, and sensitivity of 0.0005 inch wg (0.125 kPa). Transmit [electronic] [pneumatic] signal to receiver with matched scale range.

Pressure Transmitters: One pipe direct acting [indicating type] for gas, liquid, or steam service, range suitable for system, proportional [electronic] [pneumatic] output.

Temperature Transmitters: One pipe, directly proportional output signal to measured variable, linearity within plus or minus 1/2 percent of range for 200 degree F (93 degree C) span and plus or minus one percent for 50 degree F (10 degree C) span, with 50, 100, or 200 degree F (10, 38, 93 degree C) temperature range, compensated bulb, averaging capillary, or rod and tube operating on 20 psig (138 kPa) input pressure and 3 to 15 psig (20 to 100 kPa) output.

Humidity Transmitters: One pipe, directly proportioned output signal to measured variable, linearity within plus or minus one percent for 70 percent relative humidity span, capable of withstanding 95 percent relative humidity without loss of calibration.

RECEIVER CONTROLLERS

Single or dual input models [with control point adjustment] direct or reverse acting with mechanical set point adjustment [with locking device], proportional band adjustment, and authority adjustment. Provide [proportional] [proportional plus integral] control mode.

Remote control point adjustment shall be plus or minus [20] [___] percent of sensor span, input signal [3 to 13 psig (20 to 90 kPa).] [1 to 20 psig (7 to 140 kPa).]

Proportional band shall extend from 2-1/2 to 40 percent of primary sensor span, authority from 10 to 200 percent of primary sensor span[.] [and integral time 0.5 to 20 min.]

Suitable for supply air pressure of [18 psig (125 kPa)] [20 psig (140 kPa)] with input signals of [3 to 15 psig (20 to 100 kPa)] [1 to 20 psig (7 to 140 kPa)] and output signal 0 to [15 psig (100 kPa).] [20 psig (140 kPa).]

PNEUMATIC SYSTEMS ACCESSORIES

Pressure Gages: Manufacturer's standard [to FS-GG-G-76], black letters on white background, [3-1/2 inch (90 mm)] [2-1/2 inch (65 mm)] [2 inch (50 mm)] diameter, flush or surface mounted, with [front calibration screw,] suitable dial range calibrated to match sensor, in appropriate units.

Instrument Pressure Gages: Manufacturer's standard [to FS-GG-G-76], black letters on white background, [2 inch (50 mm)] [1-1/2 inch (40 mm)] diameter, stem mounted with suitable dial range.

Diaphragm Control and Instrument Valves: 1/4 and 3/8 inch (6 and 10 mm) forged brass body with reinforced teflon diaphragm, stainless steel spring, and color coded phenolic handle.

Gage Cocks: Tee or lever handle, bronze, rated for 125 psig (860 kPa).

Relays: For summing, reversing, amplifying, highest or lowest pressure selection, with fixed 1:1 [or adjustable] input/output ratio.

Switches: With indicating plates, accessible adjustment, calibrated and marked.

CONTROL PANELS

Unitized cabinet type for each system under automatic control with relays and controls mounted in cabinet and temperature indicators, pressure gages, pilot lights, pushbuttons and switches flush on cabinet panel face.

ANSI/NEMA 250, general purpose utility enclosures with enamelled finished face panel.

ALARM SYSTEM

Provide alarm panel with individual indication, horn, silenced acknowledge switch, and test switch.

At any alarm condition indication light will flash and alarm will sound. Stop horn by depressing acknowledge switch and indicate alarm conditions by a continuous light until trouble condition has cleared. Sound alarm again should second alarm occur before first one has cleared.

Provide remote panels where indicated with indication horn, activated by any alarm. Provide alarm silence/acknowledge switch such that alarm can be acknowledged from master and remote panel.

Provide panels in locations described to serve duplicate functions of primary panel. Provide alarm silence/acknowledge switch such that alarm can be acknowledged from any panel.

Provide dry contacts at main alarm panel for use by independent alarm monitoring company to indicate [each] alarm condition.

PART 3 EXECUTION

EXAMINATION

Verify that systems are ready to receive work.

Beginning of installation means installer accepts existing conditions.

INSTALLATION

Install in accordance with manufacturer's instructions.

Mount compressor and tank unit on vibration isolation[.] [consisting of springs, with minimum [one inch (25 mm)][2 inches (50 mm)] static deflection and one inch (25 mm) clearance to floor.] [Refer to Section 15242.] Isolate air supply with wire-braid reinforced rubber hose[.] [or polyethylene tubing.]

Supply instrument air from compressor units through filter, pressure reducing valve, pressure relief valve, with pressure gages, and shutoff and bypass valves.

Install pressure reducing stations consisting of pressure reducing valve, particle filter, valved bypass, pressure gage on inlet and outlet, and pressure relief valve.

Locate refrigerated air dryer in discharge air line from tank. Mount dryer on wall on rubber in shear mounts. Install pressure regulator downstream of dryer. Pipe automatic drain to nearest floor drain.

Use copper tubing in mechanical rooms, where subject to damage or temperatures in excess of 200 degrees F (93 degrees C), where adjacent to heating pipes passing through common sleeve, and where not readily accessible. In mechanical rooms bundled plastic tubing with suitable junction boxes or single plastic tubing with tray or raceway may be used.

Conceal tubing. Run exposed only in mechanical rooms, storage rooms and like, in neat manner and properly supported. [Refer to Section 15140.]

Mechanically attach tubing to supporting surfaces. Sleeve through concrete surfaces in minimum one inch (25 mm) sleeves, extended 6 inches (150 mm) above floors and one inch (25 mm) below bottom surface of slabs.

Purge tubing with dry, oil-free compressed air before connecting control instruments.

Provide instrument air tubing with check and hand valves to expansion tanks with Schraeder fittings and hose.

Install [pressure gages] [test plugs] on branch lines at each receiver controller and signal lines at each transmitter excepting individual room controllers.

Check and verify location of thermostats[,] [humidistats,] and other exposed control sensors with plans and room details before installation. Locate room thermostats [60 inches (1 500 mm)] [48 inches (1 200 mm)] [42 inches (1 050 mm)] above floor. Align with lighting switches[,][.] [and humidistats.] Refer to Section 16141.

Mount freeze protection thermostats using flanges and element holders.

Mount outdoor reset thermostats and outdoor sensors indoors, with sensing elements outdoors[.] [with sun shield.]

Provide separable sockets for liquids and flanges for air bulb elements. Refer to Section 15980.

Provide thermostats in aspirating boxes in front entrances[,] [handball courts,] [gymnasiums,] [high security areas] [and] [__________.] [and where indicated.]

Provide guards on thermostats in entrance hallways [and other public areas.] [and where indicated.]

Provide valves with position indicators and with pilot positioners where sequenced with other controls.

Provide separate steam valve for each bank of coils. Provide two valves in parallel where steam load exceeds 1500 lb/hr (0.10 kg/sec). Capacities for two valves in parallel shall have 1/3 - 2/3 load capacities sequenced with smaller valve opening first.

Provide mixing dampers of [opposed] [or] [parallel] blade construction arranged to mix streams. Provide pilot positioners on mixed air damper motors. [Provide separate minimum outside air damper section adjacent to return air dampers with separate damper motor.]

Provide pilot positioners on damper operators sequenced with other controls.

Test multizone dampers for temperature pickup due to leakage when hot deck is closed and cold deck is open. Adjust for maximum temperature rise of 2 degrees F (one degree C) when the temperature difference between the hot and cold decks is 20 degrees F (11 degrees C).

Mount control panels adjacent to associated equipment on vibration free walls or free standing angle iron supports. One cabinet may accommodate more than one system in same equipment room. Provide engraved plastic nameplates for instruments and controls inside cabinet and engraved lamicoid nameplates on cabinet face.

Install "hand/off/auto" selector switches to over-ride automatic interlock controls when switch is in "hand" position.

Provide conduit and electrical wiring where required. Refer to Section 16180.

After completion of installation, test and adjust control equipment. Submit data showing set points and final adjustments of controls.

AA.	Test pneumatic systems to system pressure maximum of 30 psig (200 kPa). Check calibration of instruments. Recalibrate or replace.

MANUFACTURER'S FIELD SERVICES

Prepare and start systems under provisions of Section [01600.] [01650.]

DEMONSTRATION

Provide systems demonstration under provisions of Section [01670.] [_____.]

Demonstrate complete operation of systems, including sequence of operation after Date of Substantial Completion.

CONTROL VALVE SCHEDULE

DRAWING_CODE	V-1	V-2	V-3

Valve Size

Valve CV

Operator Spring Range

Normal Position

CONTROL DAMPER SCHEDULE

DRAWING_CODE	CD-1	CD-2	CD-3

Height

Width

Air Flow

Air Pressure Drop

END OF SECTION