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Keltech Incorporated Electric Tankless Light Industrial Water Heaters, C2N Series Guide Specification
Keltech Tankless Light Industrial Water Heaters are designed to accommodate most light industrial fluid heating applications including booster applications with incoming process temperatures up to 130deg.F (54.4deg.C), demand is 36kW-50kW and total flow is <10GPMupto15GPM (2.8 56.8l/m). C2N-Series units are 3 Phase Delta 480V or 600V. Standard units feature e" 0 . 7 5 G P M ( 2 . 8 l / m ) a c t i v a t i o n . L o w f l o w a c t i v a t i o n o p t i o n s a t 0 . 2 5 G P M ( 1 . 0 l / m ) a n d 0 . 5 0 G P M ( 1 . 9 l / m ) a r e a v a i l a b l e . N E M A 4 X a n d e x p l o s i o n p r o o f p u r g e s y s t e m o p t i o n s a r e a v a i l a b l e .
A v a i l a b l e f o r w a l l - o r f l o o r - m o u n t i n g , K e l t e c h T a n k l e s s L i g h t I n d u s t r i al Water Heaters range from 36 to 50 kW units. They feature shuttle type flow switches that activate a PID controller. Water heaters are equipped with Incoloy 800 sheathed low watt density heating elements and a three-mode (PID) controller with dual digital display of set-point and output water temperature.
Keltech's Light Industrial water heaters allow water supply to quickly reach the required setpoint temperatures, up to 160 deg. F (71.1 Deg. C) in as little as 20 to 30 seconds and provide a consistent flow of hot water up to 15 GPM (56.8 l/m) continuously.
Redundant Control and Safety Features: Every Keltech Light Industrial water heater includes multiple safety features including internal fusing, digital microprocessor-based temperature control, and splash proof NEMA 4 water tight enclosures. Safety only circuits monitor for over temperature conditions and ensure output temperature does not exceed maximum water heater allowable working water temperature.
View Keltech's complete line of innovative tankless water heaters for continuous flow in industrial, healthcare and laboratory facilities, and specialty applications, at HYPERLINK "http://www.keltech-inc.com" www.keltech-inc.com. Contact Keltech, Inc., Delton MI; Phone: (800)999-4320) Email HYPERLINK "mailto:sales@keltech-inc.com" sales@keltech-inc.com.
Keltech eases the specifying process with a seasoned customer service staff and a range of helpful information tools on an advanced website. Keltech is a subsidiary of Bradley, the industry leader in the manufacture of safety eyewash, eye/face wash, and eyewash heaters, as well as premium quality commercial plumbing fixtures, valves, TMVs, electric tankless water heaters and washroom accessories that appear in the following CSI MasterFormat 2012 Sections:
Section221119-DOMESTIC WATER PIPING SPECIALTIES (Thermostatic mixing valves)
Section223313-INSTANTANEOUS ELECTRIC DOMESTIC WATER HEATERS (Keltech tankless water heaters)
Section224216.11-COMMERCIAL SINKS AND FAUCETS
Section224223-COMMERCIAL SHOWERS AND SHOWER VALVES
Teflon is a registered trademark of E. I. du Pont de Nemours and Company
This document is Copyright 2014 Bradley Corporation
SECTION 223313 INSTANTANEOUS ELECTRIC DOMESTIC WATER HEATERS
GENERAL
SECTION INCLUDES
Electric, tankless light industrial water heaters and water heater accessories.
Specifier: If retaining optional "Related Sections" article, edit to include sections applicable to Project.
RELATED SECTIONS
Division 22 Section "General-Duty Valves for Plumbing Piping" for valves.
Division 22 Section "Domestic Water Piping" for water piping.
Division 22 Section "Domestic Water Piping Specialties" for vacuum breakers, water pressure-reducing valves, water-hammer arresters, and specialty valves.
Division 26 Sections for electrical power and control wiring.
Specifier: If retaining optional "References" article, edit to include standards cited in edited Section.
REFERENCES
General: Applicable edition of references cited in this Section is current edition published on date of issue of Project specifications, unless otherwise required by building code in force.
American National Standards Institute (ANSI): HYPERLINK "http://www.ansi.org" www.ansi.org:
ANSI Z21.22-Relief Valves for Hot Water Supply Systems
American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE): HYPERLINK "http://www.ashrae.org" www.ashrae.org:
ASHRAE/IESNA90.1-Energy Standard For Buildings Except Low-Rise Residential Buildings
Canadian Standards Association/CSA Group (CAN/CSA): HYPERLINK "http://www.csagroup.org/us/en/home" www.csagroup.org/us/en/home:
CSA-C22.2 No. 88-Construction and Test of Industrial Heating Equipment
American Society of Sanitary Engineering (ASSE): HYPERLINK "http://www.asse-plumbing.org" www.asse-plumbing.org
ASSE 1003-Performance Requirements for Water Pressure Reducing Valves for Domestic Water Distribution Systems
ASSE 1010-Performance Requirements for Water Hammer Arresters
National Electrical Manufacturers Association (NEMA): HYPERLINK "http://www.nema.org" www.nema.org:
NEMA Standards Publication250-"Enclosures for Electrical Equipment (1000 Volts Maximum)"
National Fire Protection Association (NFPA) HYPERLINK "http://www.nfpa.org" www.nfpa.org:
NFPA70-National Electrical Code
NFPA496-Standard For Purged and Pressurized Enclosures for Electrical Equipment
NSF International (NSF): HYPERLINK "http://www.nsf.org" www.nsf.org:
NSF 61-Drinking Water System Components Health Effects
NSF372-Drinking Water System Components - Lead Content
Underwriters Laboratories (UL) HYPERLINK "http://www.ul.com" www.ul.com:
UL50EEnclosures for Electrical Equipment, Environmental Considerations
UL499-Standard for Electric Heating Appliances
ACTION SUBMITTALS
Product Data: For each product:
Manufacturer's data sheets indicating unit performance and compliance with requirements.
Include details of electrical and mechanical operating parts.
Show mounting and securing requirements and utility connection requirements.
Specifier: Retain "LEED Submittals" Paragraph and corresponding "ASHRAE/IESNA Compliance" Paragraph under Quality Assurance Article below for LEED projects.
LEED Submittals
Product Data for PrerequisiteEA2 Minimum Energy Performance: Documentation indicating that units comply with applicable requirements in ASHRAE/IESNA90.1, Section7, "Service Water Heating."
INFORMATION SUBMITTALS
Specifier: Retain paragraphs below when Project requirements include compliance with Federal Buy American provisions.
Buy American Act Certification: Submit documentation certifying that products comply with provisions of the Buy American Act 41 U.S.C 10a 10d.
Source quality-control test reports.
Field quality-control test reports.
CLOSEOUT SUBMITTALS
Operation and maintenance data.
QUALITY ASSURANCE
Specifier: Retain "ASHRAE/IESNA Compliance" Paragraph for LEED projects and for other projects where compliance is required by authorities having jurisdiction.
ASHRAE/IESNA Compliance: Applicable requirements in ASHRAE/IESNA90.1.
Source Limitations: Obtain electric tankless water heaters through a single source from a single manufacturer.
Electrical Components: Listed and labeled per NFPA70, Article100, by a testing agency acceptable to authority having jurisdiction.
Sanitation Standard: Comply with NSF61 for fixture components in contact with potable water.
Lead-Free Construction: Comply with NSF372 for fixture components in contact with potable water.
WARRANTY
Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace components of electric, domestic-water heaters that fail in materials or workmanship within specified warranty period.
Warranty Period: From Date of Substantial Completion
Electrical Components: Two years.
Heating Elements: Four years.
Heat Exchanger Free From Leaks: Eight years.
PRODUCTS
MANUFACTURERS
Basis-of-Design Product: Subject to compliance with requirements, provide electric tankless Light Industrial water heaters by Keltech, Inc., Delton MI; Phone: (800)999-4320; Email HYPERLINK "mailto:sales@keltech-inc.com" sales@keltech-inc.com; Web site HYPERLINK "http://www.keltech-inc.com" www.keltech-inc.com.
Submit requests for substitution in accordance with Instructions to Bidders and Division01 General Requirements.
ELECTRIC TANKLESS LIGHT INDUSTRIAL WATER HEATERS
Keltech C2N Series water heaters include automatic reset and manual reset controls to disable the water heater if the water temperature increases to 175 deg. F (79.5 deg. C).
Electric tankless light industrial water heater, UL 499, sized for constant temperature duty to meet flow requirements and temperature setpoints up to 160 deg. F (71.1 deg. C), with PID Controller, fan-cooled solid-state relays, and flow activation.
Basis of Design Manufacturer/Model: Keltech, Inc., Model C2N Light Industrial Heater.
Specifier: Select one of two "Enclosure" subparagraphs.
Enclosure: UL 50E, [0.063-inch/16-ga.- (1.59-mm-) thick, NEMA4] [0.063-inch/16-ga.- (1.59-mm-) thick stainless steel NEMA4X].
Enclosure: UL 50E and NFPA 496 Explosion Proof, Class 1/Division 2: [0.063-inch/16-ga.- (1.59-mm-) thick, NEMA4] [0.063-inch/16-ga.- (1.59-mm-) thick stainless steel NEMA4X.
Mounting: [Wall mounted] [Floor mounted with leg kit].
Heat Exchanger: Copper tubing with brazed brass fittings and large internal passageways for minimal pressure drop. Provide NSF 61 barrier materials for potable water, without storage capacity.
Specifier: Retain lining and coating options below as required for deionized water or corrosive liquid processing requirements.
PFA-Teflon-lined Coating: FDA approved for deionized water or mild corrosive fluid applications
Xylan Fluoropolymeric Coating: FDA approved for food contact or deionized water
High Temperature Package: [Insert temperature required between 160 and 190 deg. F] [Not required].
Connections: 3/4 inch NPT (DN 19) inlet, outlet.
Pressure Rating: 150 psig (1035 kPa).
Flow Turn-On Point: [0.75 gpm (0.49 l/s)] [0.5 gpm (0.32 l/s)].
Heating Element: Incoloy 800 sheathed low-watt density resistive element.
Temperature Control: Microprocessor with PID logic and dual display of set-point and actual outlet water temperature.
Safety Controls:
Internal thermostat with auto reset high- limit switch.
Surface mounted bi-metal thermostat with manual reset.
Internal Fused Disconnect: [Required] [Not required].
Ground Fault Equipment Protection. For leakage to ground, greater than 1 amp, Door-mounted ground fault status light and reset: [Required] [Not required].
Capacity:
Specifier: If temperature rise/flow rate data appear on Drawings, then select "As scheduled" option. Otherwise, insert temperature rise and flow rate below from product data sheet. Temperature rise range available: 10 140 deg. F (6 78 deg. C). Flow range available: 0.75-15 GPM (1.9 L/m 57 L/m)
Temperature Rise at Flow Rate: [___ degF (__ degC) at ___ gpm (__ L/m)] [As scheduled].
Adjustable Temperature Setpoint: [___deg F (___ degC)] [As scheduled].
Electrical Characteristics: [36] [50] kW at [480VAC/3-phase/3-wire] [600VAC/3-phase/3-wire] [As scheduled].
Specifier: Retain following subparagraph that describes available option for the C2N Series models if required for Project.
Facility Controls Integration: 4: 20 mA input.
WATER HEATER ACCESSORIES
Provide electric tankless water heater system including the following system accessories:
Specifier: Retain accessories required for project from those in subparagraphs below; coordinate with contents of other Division 22 sections.
Pressure and Temperature Relief Valves: Pressure and Temperature Relief Valves: [Brass] [Stainless steel, ASME rated and stamped pressure relief valve]. Adjust to pressure setting less than water heater working-pressure rating.
Pressure and Temperature Safety Relief Valve set to 80 psig (552 kPa).
Pressure-Reducing Valves: ASSE1003.
Vacuum Relief Valves: ANSIZ21.22/CSA4.4.
Shock Absorbers: ASSE1010 or PDI-WH201, SizeA water hammer arrester.
Thread Adapters: NPT to BSPP, stainless steel.
Y-Strainer: [Lead Free Brass] [Stainless steel].
EXECUTION
INSTALLATION
Electric, Tankless, Domestic-Water Heater Mounting:
Install water heaters in accordance with manufacturer's written instructions.
Install water heaters level and plumb, according to layout drawings and referenced standards. Insert metal shims as required to level unit and anchor to structure as recommended by manufacturer.
Specifier: Retain subparagraph below for applications where seismic design of component fastening to structure is required by authorities having jurisdiction. Consult project structural engineer for performance requirements.
Anchor unit in accordance with Project seismic design requirements.
Maintain manufacturer's recommended clearance and access dimensions.
Install water supply piping to each water heater, and from heater to fixture requiring hot water supply connection.
Install stop valves on water supply and outlet piping. Provide stop valve on each supply in readily-serviced location. Lock stop valve in OPEN position.
Comply with Division 22 Section, General-Duty Valves for Plumbing Piping, for stop valve requirements.
If shipped loose, install pressure and temperature safety relief valves on water heater. Manifold relief valve discharge as shown in manufacturer's written instructions.
Specifier: Select one of the two following paragraphs, as required by project conditions.
Extend relief-valve outlet line, and discharge by positive air gap above closest floor drain.
Install relief valve drain piping as indirect waste to spill by positive air gap into open drains or over floor drains. Install hose-end drain valves at low points in water piping.
Run relief valve drain piping without creating tripping hazard.
Specifier: Retain accessories in following paragraph that are required for project; coordinate with contents of other Division 22 sections.
Install [pressure-reducing valve with integral bypass relief valve in water heater cold water inlet piping] [and] [water hammer arrester in water-heater outlet piping], maximum outlet pressure [___psig (___kPa)] [as scheduled].
FIELD QUALITY CONTROL
Do not energize water heater until hydrostatic testing of domestic water lines is complete. See Division 22 Section "Domestic Water Piping."
Test and adjust installation.
Set field-adjustable temperature set point of temperature-actuated controls. Adjust set point within allowable temperature range.
Replace defective or malfunctioning controls and equipment.
Clean unit surfaces, test fixtures, and leave in ready-to-use condition.
END OF SECTION
Keltech, Inc., C2N Series
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