Centerpoint Energy, Inc (holding Co) · NYSE:CNP
Centerpoint Energy, Inc (holding Co) — Navien America — Navien Webinar
40 slides from Centerpoint Energy, Inc (holding Co)'s conference presentation
Slide 1: Condensing Tankless Water Heaters
Ty Tipton, Tipton Company Brian Fenske, Navien America CONDENSING TANKLESS WATER HEATERS
Slide 2: The Basics of Tankless Water Heaters
THE BASICS OF TANKLESS WATER HEATERS Tankless water heaters are available in Electric Natural gas Propane fired models How do they work?
Slide 3: Cautious Advertising and Representation
CAUTIOUS ADVERTISING AND REPRESENTATION A term that should be avoided is “instantaneous”. Tankless water heaters are not instantaneous! It takes time to get the water to the fixture(s)
Slide 4: Cautious Advertising and Representation
CAUTIOUS ADVERTISING AND REPRESENTATION Hot Water Delivery Time Lag/Distance Flow Rate Recirc/Non-Recirc
Slide 5: Why Tankless?
WHY TANKLESS? Performance Savings Endless supply of hot water Saves money Steady temperature Saves space Energy efficient Saves energy Saves the environment For Contractors Better margins Differentiation Lighter install A solution when space is limited
Slide 6: Saving the Environment
SAVING THE ENVIRONMENT Condensing tankless water heaters reduces up to 964 lbs. of CO2 per year compared to a conventional gas tank water heater, and up to 324 lbs. of CO2 compared to a standard gas tankless water heater
Slide 7: Energy Savings
ENERGY SAVINGS Why are they energy Efficient? .80 to .98% efficient No Storage or standby loss Modulating Burner Heater placement
Slide 8: LEED
LEED Current LEED program allows: Maximum 2 points for “Instantaneous” water heater with an EF ≥ 0.80 Maximum 2 points for “closed combustion” (Sealed supply air & exhaust ducting) Maximum 2 points for a “energy efficient water distribution system”
Slide 9: Endless Hot Water
ENDLESS HOT WATER But be careful of the consumer downside: If you have a family of 6 that has never had enough hot water with a 50 gallon tank heater, your bill might just go up because now your family will not be taking cold showers or have to shorten them.
Slide 10: Today's Homes and Need for Hot Water
TODAY'S HOMES AND NEED FOR HOT WATER Another reason that builders like tankless water heaters is that they are able to provide hot water to today's popular large tubs
Slide 11: Today's Homes and Need for Hot Water
TODAY'S HOMES AND NEED FOR HOT WATER 1. A tank type heater has to be very large to do all of these things without running out. 2. Tankless are only limited to the flow rate our tankless unit(s) can provide.
Slide 12: Common Misconceptions on Sizing and Unit Selection
COMMON MISCONCEPTIONS ON SIZING AND UNIT SELECTION Today’s tankless water heaters provide more than enough capacity to meet any hot water need from a one-bathroom house to a hotel.
Slide 13: Common Misconceptions on Sizing and Unit Selection
COMMON MISCONCEPTIONS ON SIZING AND UNIT SELECTION Limitations & knowledge Most homes only have a ¾” hot water main and most are now in PEX or CPVC materials.
Slide 14: Location Location Location
LOCATION LOCATION LOCATION Builders like the tankless water heaters for several reasons, not the least of which is space savings.
Slide 15: Location Location Location
LOCATION LOCATION LOCATION Standard tanks in a two-story home, this means more framing, drywall and paint to enclose it. Tankless options: 1. Wall Mounting 2. Garage 3. Attics 4. Outside (good idea?)
Slide 16: Tank Versus Tankless
TANK VERSUS TANKLESS Gas Water Tanks Tankless Water Heaters (30-50 Gal, 40 MBTUH) (199,000 BTU) • 250-420 lbs. filled • 85-95 lbs. filled • 6-10 year warranty • 12-15 year warranty • 40 GPH@ 90º rise • 195 GPH @ 90º rise (40 G) • 1st hour and every • 78 Gal 1st Hour hour delivery delivery remains th
Slide 17: Gas Tank Heater vs Condensing Heater Operating Cost
Gas Tank Heater Water Required Temp Gallons per BTU Operating Operating Weight of BTU Cost per Energy Inlet Fixture Rise Day Content Cost Cost Gal of Temp (°F) Temp (°F) (°F) Heated Required Therm 1ft3 N/G Factor Per Day Per Year Water 60 120 60 8.34 100 50,040 $0.98003 1000 0.59 $0.83 $303.39 98% C
Slide 18: Electric vs. Gas
ELECTRIC VS. GAS Natural Gas * EF .95 (High Efficiency N/G Tankless x $0.98 ($ per therm/CCF) = $154.50 Annual yearly cost Electric * EF .92 (High Efficiency Electric tank/52 Gal) x $0.12 ($ per KWH) = $572.70 Annual yearly cost * Based on DOE guidelines – Family of 4 using 50 gallons per day
Slide 19: Choosing the Right Sized Unit
CHOOSING THE RIGHT SIZED UNIT Tankless, including multiples are sized by peak GPM The first thing we need to do is establish the peak hot water demand for the job. In a home this is usually the number of showerheads, X the flow rate X 80%. Example: 3 showers @ 2.5 GPM each = 7.5GPM X 80% = 6 G
Slide 20: Commercial Application Example
COMMERCIAL APPLICATION EXAMPLE A high school has a locker room with 24 showers. They have a 10 year old 400 gallon tank water heaters that is “always on” 24/7/365 and it has begun to leak needing replacement probably due to sediment build up caused by constantly heating and reheating water that is n
Slide 21: What Is Condensing?
WHAT IS CONDENSING? To lose heat (Energy) and change from a vapor into a liquid, or make a vapor change to a liquid
Slide 22: Input Versus Output Comparison
INPUT VERSUS OUTPUT COMPARISON Navien 82% 84% 93% 94% Navien Navien Combustion NR/NP Tankless Tankless Tankless Tankless NR-180 NR-210 Efficiency -240 98% 98% 98% Input 199,000 199,000 199,900 199,000 150,000 180,000 199,000 BTU Output BTU 163,180 167,160 185,907 187,060 147,000 176,400 195,020 To W
Slide 23: Tankless Future - Condensing High Efficiency 90%+
TANKLESS FUTURE-CONDENSING HIGH EFFICIENCY – 90%+ Benefits 7 out of 8 manufacturers 90%+ units are vented with Sch 40 PVC-DWV Resulting in lower installation costs Vent installation ease No need to relocate unit for ease of venting, resulting in required gas & water line rerouting or exten
Slide 24: Concerns About Condensing and Corrosive Condensate
CONCERNS ABOUT CONDENSING AND THE CORROSIVE CONDENSATE PRODUCED (WHEN IT’S NOT SUPPOSED TO): 1.Heat exchanger 2.Efficiency reduction 3.Controls 4.Maintenance
Slide 25: Result of Condensation Damage
RESULT OF CONDENSATION DAMAGE
Slide 26: How Navien Deals with Condensing
How one manufacturer (Navien) deals with Condensing #436 Stainless Steel Primary and Condensing (Secondary) Heat Exchangers 400 series Ferritic grades have been developed to provide a group of stainless steel to resist corrosion and oxidation, while being highly resistant Type 436 has columbium adde
Slide 27: KD Premixing Burner Design
KD Premixing burner design Blower Sol. Valve Air Fuel Nozzle Manifold Mixture Gas Slope Perforate Plate Down-Fired Burner
Slide 28: Perforated Slots for Fuel
Perforated slots for fuel Flat Plate Slot Collision Plate Slot Full Burner
Slide 29: Benefits of Navien's Integrated Recirculation System
Benefits of Navien’s Integrated Recirculation System The recirculation system will minimize the “cold water sandwich” A recirculation system is estimated to reduce water consumption by 20%-33% by eliminating wait times when using hot water Navien “A” Model Other Tankless Which install makes more
Slide 30: Recirculation: Navien A-Model
RECIRCULATION Navien “A”- Model •Built in pump •Built in Buffer Tank
Slide 31: Venting Options - PVC Vented Tankless
VENTING OPTIONS – PVC VENTED TANKLESS
Slide 32: Dealing with Corrosive Condensate
DEALING WITH CORROSIVE CONDENSATE Some applications and installations may require a condensate neutralizer
Slide 33: Typical Residential Tank Replacement (Garage Closet)
Typical Residential Tank Replacement (Garage Closet)
Slide 34: Tankless Water Heaters Are Not Just for Residential
TANKLESS WATER HEATERS ARE NOT JUST FOR RESIDENTIAL With the recent advent of condensing, high efficiency, ease of venting, and probably most important, sealed combustion we are installing tankless in the commercial and restaurant applications
Slide 35: Tankless Water Heater Users
McDonald’s. Tankless ~~ Water FAIRFIELD Heater Marriott Users TN TWIN PEAKS Taco Bueno
Slide 36: Drago's Restaurant, Metairie, LA
DRAGO’S RESTAURANT METAIRIE, LA. Drago’s a 300-seat seafood restaurant used to get its hot water the conventional way, and never had enough They had a 150-gallon tank that heated and stored water. When Drago’s embarked on a $3 million renovation of the restaurant, they switched to Tankless Water Hea
Slide 37: Einstein Bros. Bagels
EINSTEIN BROS. BAGELS A desire for space savings was the reason behind Einstein Noah Restaurant Group’s decision to replace conventional hot-water heaters with tankless units Unlike conventional water heaters, tankless models don’t take up valuable floor space. The units, which measure approximately
Slide 38: Additional Benefits of Condensing Tankless
ADDITIONAL BENEFITS OF CONDENSING TANKLESS Sealed combustion Minimal concerns of negative pressure caused by exhausts 2-pipe systems solve combustion air issues Off the floor, unaffected by housekeeping Long life expectancy Better warranties Eliminates the need for overheating water to kill Legi
Slide 39: Navien Cascaded Units with Common Venting
Navien Cascaded Units with Common Venting
Slide 40: Thank You!
CONTACTS: Brian Fenske Ty Tipton Navien America Inc. Tipton Company 1371 Santa Fe Dr. 3301 Commerce St. Tustin, CA 92780 Houston, TX 77003 Toll Free: 1-800-519-8794 Toll Free: 1-800-275-3011 Tel: 714-258-9005 Tel: 713-225-1086 Fax: 714-258-9010 Fax: 713-223-1002 E-mail: E-mail: brianf@navienamerica.