HomeMy WebLinkAbout223302 RESIDENTIAL ELECTRIC WATER HEATERSTHE KENT
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THE KENT Issue Date 05.09.18 RESIDENTIAL ELECTRIC WATER
HEATERS
THE KENT
SECTION 22 33 02 - RESIDENTIAL ELECTRIC WATER HEATERS
PART 1 - GENERAL
1.01 RELATED SECTIONS:
A. Drawings, general provisions of the Contract, including General and Supplementary
Conditions, and Division-1 Specification Sections and Division 20 Specification Sections, apply
to work of this Section.
1.02 DESCRIPTION OF WORK:
A. Extent of water heater work required by this section is indicated on drawings and schedules,
and by requirements of this section.
B. Refer to other Division 20, 22 and 23 sections for water piping, specialties, and pumps which
are required external to water heaters for installation; not work of this section.
C. Electrical Work: Provide the following wiring as work of this Section, in accordance with
requirements of Division 26:
1. Provide factory-mounted and factory-wired controls and electrical devices as specified
in this Section.
D. Refer to Division 26 sections for other electrical wiring including motor starters, disconnects,
wires/cables, raceways, and other required electrical devices; not work of this section.
1.03 QUALITY ASSURANCE:
A. Manufacturer's Qualifications: Firms regularly engaged in manufacturer of water heaters of
types and capacities required, whose products have been in satisfactory use in similar service
for not less than 5 years.
B. Codes and Standards:
1. UL Compliance’s: Construct water heaters in accordance with the following UL
standards:
2. UL 174, "Household Electric Storage-Tank Water Heaters".
C. Provide water heater components which are UL-listed and labeled.
D. NEC Compliance: Install electric water heaters in accordance with requirements of NFPA 70,
"National Electrical Code".
E. ASME Code Symbol Stamps: Provide water heaters and safety relief valves which comply
with ASME Boiler and Pressure Vessel Code, and are stamped with appropriate code
symbols.
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F. ASHRAE Compliance: Provide water heaters with Performance Efficiencies not less than
prescribed in ASHRAE 90.1.
G. NAECA Compliance: Provide water heaters with Performance Efficiencies not less than
prescribed in NAECA requirements for water heater energy standards.
1.04 SUBMITTALS:
A. Product Data: Submit manufacturer's technical product data including rated capacities and
efficiencies of selected model clearly indicated; operating weights; furnished specialties and
accessories; and installation and start-up instructions.
B. Shop Drawings: Submit manufacturer's assembly type shop drawings indicating dimensions,
required clearances, and methods of assembly of components.
C. Wiring Diagrams: Submit manufacturer's electrical requirements for electrical power supply
wiring to water heaters. Submit manufacturer's ladder-type wiring diagrams for interlock and
control wiring required for final installation of water heaters and controls. Differentiate between
portions of wiring that are factory-installed and portions that are to be field-installed.
D. Maintenance Data: Submit maintenance data and parts listed for each type and size of water
heater, control, and accessory; including "trouble-shooting" maintenance guide. Include this
data, product data, shop drawings, and wiring diagrams in maintenance manual; in
accordance with requirements of Division 1.
E. Certificates: Submit appropriate Certificates of Shop Inspection and Data Report as required
by provisions of ASME Boiler and Pressure Vessel Code.
1.05 DELIVERY, STORAGE, AND HANDLING:
A. Handle water heaters and components carefully to prevent damage, breaking, denting and
scoring. Do not install damaged water heaters or components; remove from site and replace
with new.
B. Store water heaters and components in clean dry place. Protect from weather, dirt, fumes,
water, construction debris, and physical damage.
C. Comply with manufacturer's rigging and installation instructions for unloading water heaters,
and moving units to final location for installation.
PART 2 - PRODUCTS
2.01 RESIDENTIAL ELECTRIC WATER HEATERS:
A. General: Provide residential electric water heaters of sizes, capacities, and electrical
characteristics as indicated on schedule.
B. Heater: Construct for working pressure of 150 PSI; magnesium anode rod; glass lining on
internal surfaces exposed to water.
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C. Heating Elements: Low watt density with zinc plated copper sheath; double element,
non-simultaneous operation.
D. Safety Controls: Equip with high temperature cutoff for each element, factory wired.
E. Jacket: Equip with full size control compartments with front panel opening. Insulate tank with
vermin-proof glass fiber insulation. Provide outer steel jacket with baked enamel finish.
F. Accessories: Provide brass drain valve; 3/4 inch relief valve; cold and water dip tube.
G. Controls: Provide thermostat for each element, factory wired.
H. Warranty: 6-year on tank and parts.
I. Manufacturers: Subject to compliance with requirements, provide residential electric water
heaters of one of the following:
1. A. O. Smith Corp.
2. Bradford White Corporation
3. Lochinvar Water Heater Corp.
4. Rheem Water Heater Div; City Investing Co.
5. Ruud Water Heater Div; City Investing Co.
6. State Industries, Inc.
2.02 TANKLESS ELECTRIC WATER HEATERS:
A. General: Comply with UL 499.
B. Construction: Without hot water storage. Working pressure rating of 125 psig minimum.
1. Tapings: ASME B1.20, pipe thread.
2. Interior finish: Materials complying with NSF 61, barrier materials for potable water
tank linings.
3. Jacket: Aluminum or steel, with enameled finish, or plastic.
4. Heating system: Electric resistance type, field serviceable replaceable cartridge
element.
5. Temperature control: Microprocessor fully adjustable temperature range.
6. Mounting: Bracket or device for wall mounting.
7. Unit to provide simultaneous hot water serving a single faucet up to a maximum of
three faucets, with a flow rate of 0.4 gpm to 2.0 gpm.
C. Manufacturers: Subject to compliance with requirements, provide electric tankless water
heaters of one of the following:
1. Chronomite Laboratories, Inc.
2. Eemax, Inc.
3. Keltech Inc.
4. PVI Industries, Inc.
5. Seisco
6. Stiebel Eltron, Inc.
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2.03 THERMAL EXPANSION RELIEF DEVICES:
A. Furnish and install where indicated on Contract Documents a thermal expansion relief device
constructed of materials suitable for potable water.
B. Lead free, dezincification resistant, code approved, combination water heater isolation valve
and thermal expansion relief valve.
1. Full port Ball valve 400 psi
2. Relief valve setting 125 PSI
3. Maximum temperature 210º F.
C. Manufacturers: Subject to compliance with requirements, provide thermal expansion relief
device of one of the following:
1. Apollo Valves; Series78LF-RV
2. Watts; Series LFBRV
3. Approved equal
2.04 THERMAL EXPANSION ABSORBERS:
A. Furnish and install where indicated on Contract Documents a thermal expansion absorber
constructed of materials suitable for potable water.
B. Size and number as indicated, constructed of welded carbon steel for 150 psig working
pressure.
C. Separate air charge from system water to maintain design expansion capacity, by means of a
flexible diaphragm securely sealed into the tank.
D. Provide taps for pressure gage and air charge fitting, and drain fitting. Support vertical tanks
with steel legs or base: support horizontal tanks with steel saddles.
E. Tank, with taps and supports, shall be constructed, tested and labeled in accordance with
ASME Pressure Vessel Code, Section VIII, Division 1.
F. Manufacturers: Subject to compliance with requirements, provide thermal expansion
absorbers of one of the following:
1. Amtrol Inc.
2. A. O. Smith Corp.
3. Armstrong Pumps, Inc.
4. Bell & Gossett ITT: Fluid Handling Div.
5. Watts
6. Wessels Company
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PART 3 - EXECUTION
3.01 EXAMINATION:
A. Examine areas and conditions under which water heaters are to be installed. Do not proceed
with work until unsatisfactory conditions have been corrected in manner acceptable to
Installer.
3.02 INSTALLATION OF WATER HEATERS:
A. General: Install water heaters in accordance with manufacturer's installation instructions.
Install units plumb and level, firmly anchored in locations indicated, and maintain
manufacturer's recommended clearances.
B. Support: Place units on concrete pads, orient so controls and devices needing service and
maintenance have adequate access.
C. Piping: Connect hot and cold-water piping to units with shutoff valves and unions. Connect
recirculating water line to unit with shutoff valve, check valve, and union. Extend relief valve
discharge to closest floor drain or as indicated.
D. Gages: Provide thermometers on inlet and outlet piping of water heaters, in accordance with
Division 20, Section 20 01 35 "Meters and Gages".
E. Electrical Wiring: Install electrical devices furnished by manufacturer but not specified to be
factory-mounted. Furnish copy of manufacturer's wiring diagram submittal to Electrical
Installer.
F. Verify that electrical wiring installation is in accordance with manufacturer's submittal and
installation requirements of Division 26 Sections. Do not proceed with water heater startup
until wiring installation is acceptable to water heater Installer.
3.03 INSTALLATION OF THERMAL EXPANSION ABSORBERS:
A. General: Install thermal expansion absorbers in accordance with manufacturer's installation
instructions. Install units plumb and level, firmly anchored in locations indicated, and maintain
manufacturer's recommended clearances.
B. Support: Place units on concrete pads or in-line of cold water piping, orient so controls and
devices needing service and maintenance have adequate access.
C. Piping: Provide cold water piping connections to units with unions.
3.04 FIELD QUALITY CONTROL:
A. Startup: Startup, test, and adjust electric water heaters in accordance with manufacturer's
startup instructions. Check and calibrate controls.
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3.05 CLOSEOUT PROCEDURES:
A. Training: Provide services of manufacturer's technical representative for 1- half day to instruct
Owner's personnel in operation and maintenance of water heaters.
B. Schedule training with Owner, provide at least 7 day notice to Contractor and Engineer of
training date.
END OF SECTION