238413 Self-Contained Steam Humidifiers.pdf

UPGRADE EMERGENCY POWER IN BUILDING 138

VAMC, MARION, IN PROJECT: 610-16-104

FFE 04/2020

SECTION 23 84 13

SELF-CONTAINED STEAM HUMIDIFIERS

PART 1 - GENERAL

1.1 DESCRIPTION

A. Electrode steam humidifier.

1.2 RELATED WORK

A. Section 01 00 00, GENERAL REQUIREMENTS.

B. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, and SAMPLES.

C. Section 23 05 11, COMMON WORK RESULTS FOR HVAC.

D. Section 23 09 23, DDC SYSTEM FOR HVAC.

E. Section 23 21 13, HYDRONIC PIPING.

F. Section 23 22 13, STEAM AND CONDENSATE HEATING PIPING.

1.3 QUALITY ASSURANCE

A. Refer to paragraph, QUALITY ASSURANCE, in Section 23 05 11, COMMON WORK

RESULTS FOR HVAC.

1.4 SUBMITTALS

A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT

DATA, and SAMPLES.

B. Manufacturer's Literature and Data including: Full item description and optional features and accessories. Include dimensions, weights, materials, applications, standard compliance, model numbers, size, and capacity

C. Coordination Drawings: Refer to article, SUBMITTALS, in Section 23 05

11, COMMON WORK RESULTS FOR HVAC.

1.5 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only. Where conflicts occur these specifications and the VHA standard will govern.

B. American Society of Mechanical Engineers (ASME):

B1.20.1-2013............Pipe Threads, General Purpose (Inch)

B16.5-2013..............Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard

B16.9-2012..............Factory Made Wrought Buttwelding Fittings

B16.11-2011.............Forged Fittings, Socket-Welding and Threaded

B16.42-2011.............Ductile Iron Pipe Flanges and Flanged Fittings:

Classes 150 and 300

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B31.1-2014..............Power Piping

B31.9-2014..............Building Services Piping

B40.100-2013............Pressure Gauges and Gauge Attachments

ASME Boiler and Pressure Vessel Code -

BPVC Section II-2015....Materials

BPVC Section VIII-2015..Rules for Construction of Pressure Vessels, Division 1

BPVC Section IX-2015....Welding, Brazing, and Fusing Qualifications

C. American Society for Testing and Materials (ASTM):

A53/A53M-2012...........Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and

Seamless

A106/A106M-2015.........Standard Specification for Seamless Carbon

Steel Pipe for High-Temperature Service

A216/A216M-2014e1.......Standard Specification for Steel Castings, Carbon, Suitable for Fusion Welding, for High-

Temperature Service

A285/A285M-2012.........Standard Specification for Pressure Vessel

Plates, Carbon Steel, Low-and Intermediate-

Tensile Strength

A307-2014...............Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60,000 PSI Tensile

Strength

A516/A516M-2010 (R2015).Standard Specification for Pressure Vessel

Plates, Carbon Steel, for Moderate- and Lower-

Temperature Service

A536-1984 (R2014).......Standard Specification for Ductile Iron

Castings

B62-2015................Standard Specification for Composition Bronze or Ounce Metal Castings

D. American Welding Society (AWS):

B2.1/B2.1M-2014.........Specification for Welding Procedure and

Performance Qualifications

Z49.1-2012..............Safety in Welding and Cutting and Allied

Processes

E. Manufacturers Standardization Society (MSS) of the Valve and Fitting

Industry, Inc.:

SP-80-2013..............Bronze Gate, Globe, Angle, and Check Valves

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F. Military Specifications (Mil. Spec.):

MIL-S-901D-1989.........Shock Tests, H.I. (High Impact) Shipboard

Machinery, Equipment, and Systems

G. National Board of Boiler and Pressure Vessel Inspectors (NB):

Relieving Capacities of Safety Valves and Relief Valves

H. Tubular Exchanger Manufacturers Association (TEMA):

TEMA Standards-2007.....9th Edition

PART 2 - PRODUCTS

2.1 ELECTRODE STEAM HUMIDIFIER

A. Fabrication requirements:

1. Touchscreen controller with standard building automation:

a. Intuitive touchscreen control with color graphic user interface.

b. Standard building automation communication protocols BACnet IP.

c. Embedded web interface for easy configuration and remote monitoring from any computer with a web browser over a local area network (LAN) connection.

d. USB interface for new software/feature upload and download of operational information.

e. Single or dual channel analog signal acceptance, supporting both demand and transducer control. Ability to control setpoint from humidifier control when using transducer controls.

2. Packaged system with electrode cylinder:

a. Cylinder optimized for humidifier capacity and supply voltage.

Cylinder shall have welded seam to ensure watertight and have high water sensor to prevent overfilling.

b. Durable powder coated steel cabinet with zero side clearance requirement.

c. Insulating air gap between plumbing and electrical compartment.

d. Standard internal drain water tempering to ensure maximum 140° F [60° C] drain water. External drain water cooler not acceptable.

e. Integral fill cup with minimum 1-inch [25 mm] air gap to prevent back siphoning.

f. Full cylinder indication and pre-notification of automatic shutdown at end of cylinder life.

g. Automatic pulse feature to clean any obstruction from the drain solenoid valve if required.

h. Automatic off-season shut-down after 3 days of "no call" will completely drain the cylinder[s] and automatically restart on

FFE 04/2020

call for humidity. Adjustable on/off and time sequence. Provides extended cylinder life, while ensuring stagnant water does not remain in the system.

2.2 ACCESSORIES

A. Blower Pack

1. The Blower Pack is used along with an atmospheric steam generating humidifier to distribute very fine water droplets directly into local areas or into spaces that do not have a built-in air distribution system. The Blower Pack shall be remotely mounted on suitable surfaces in the space.

2. The Blower Pack consists of:

a. Metal housing.

b. Electric cable (to connect to the humidifier)

c. Two 24 VDC fans (one top fan and one bottom fan)

d. An optional air filter kit (comes with 4 metal-framed filters)

e. A pressurized box.

f. A steam channel When the Humidifier is powered on, the safety relay closes and permits the humidifier to generate mist when it receives a demand signal.

3. The Blower Pack is controlled through the control board of the

Humidifier and receives an ON or OFF signal. The steam is generated in the humidifier and travels through the connection tubes to the blower pack. From there, the steam travels through the blower pack's steam channel and is discharged through the front of the blower pack. The exiting steam is propelled into the space by the air blown out from the pressurized box. The turbulent air causes mixing and quick absorption between the air and steam. Blower pack fans provide feedback to the humidifier through the connection cable. This feedback allows the humidifier to cease steam generation when a blower pack fan fails. This allows the entire system to shut down safely and avoids wetting in the space. A warning message "Blower pack not connected" will display on the humidifier LCD display

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install humidifiers per manufacturers' instructions.

B. Install with required clearance for service and maintenance.

3.2 ACCESSORIES

A. Install accessories in accordance with manufacturer's recommendations.

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3.3 COMMISSIONING

A. Start-up of humidifier shall be by factory trained technician.

1.5 APPLICABLE PUBLICATIONS