Water Heaters

The new NRCP line of residential tankless water heaters from Noritz America combines the high efficiency of condensing technology with the comfort and savings of hot-water recirculation. A circulating pump inside the water heater keeps hot water close to the outlet, minimizing the wait and, therefore, the waste of unused potable water down the drain. Saving water, in this case, is doubly beneficial, because recirculation also avoids wasting the energy used to heat that water.

Using the integral digital display on the front of the water heater, homeowners can program the recirculation system to operate only when needed, with a precision down to the hour. An alternative, “auto” setting allows the system to quickly “learn” a household’s water-usage routines and automatically control the recirculation loop activation times, allowing for immediate hot water when it is needed most.

High efficiency for larger homes: Part of the Noritz ecoTOUGH™ Series of gas-fired residential tankless water heaters, the NRCP98-DV and the NRCP1112-DV have an Energy Factor of 0.95 for both natural gas and LP gas. These ratings are more than 10 points higher than that of a comparably sized, conventional tankless unit, and approximately 30 points higher than a standard, tank-type gas-fired water heater.

• With a maximum input of 180,000 BTU per hour (BTU/hr), the NRCP98-DV has a maximum flow rate of 9.8 gallons per minute (gpm), making it generally suitable for homes with up to two-and-a-half baths.
• The NRCP1112-DV, with a maximum input of 199,900 BTU/hr and a maximum flow rate of 11.1 gpm, is suitable for homes with up to three and a half baths.

Each unit delivers water from 100°F to 140°F, with a minimum flow rate for activation of 0.5 gpm.

How recirculation works: Recirculation is accomplished through a combination of an integral pump and temperature sensor and the home’s water-distribution system. The recirculation control works by monitoring the temperature of the water exiting the heat exchanger inside the water heater.

• When exiting water reaches the maximum cutoff temperature, the recirculation pump shuts off, which also shuts down the burner.
• Both remain off until the water temperature falls to the minimum cutoff — or there is demand for hot water — at which point they reactivate until the maximum cutoff level is attained again. Homeowners can choose whatever minimum cutoff temperature best meets the comfort and energy-saving needs of their households.

Warm water returns to the tankless unit from the various outlets in a home via one or more recirculation loops. The maximum loop run from the tankless unit is 200 feet for 1/2-inch pipe; 500 feet for 3/4-inch pipe.

Easier, less costly venting: Using a half-inch gas line up to 120 feet in length, the NRCP98-DV and the NRCP1112-DV can be vented with PVC or CPVC pipe. With two-inch PVC, vent lines can extend up to 50 feet; with three-inch, 100 feet. (See adjacent box.)

“Condensing technology results in lower flue gas temperatures, permitting the use of plastic piping, which is less expensive than the Category III Stainless Steel venting required by conventional tankless units,” explains Noritz marketing manager Jason Fleming. “The zero-clearance plastic piping provides greater installation flexibility, as well as a lower installation cost, for the plumbing installer.”

Two other key features further simplify and speed installation:

• Two units can be quick-connected and then vented through a common termination point, saving installation material as well as time.
• There is no need for extra dipswitches to accommodate different vent runs.

No buffer tank needed: Unlike some condensing units, the NRCP98-DV and the NRCP1112-DV do not need a built-in buffer tank to stabilize water temperature at the outlet. Not having to maintain a reservoir of hot water inside the unit further saves energy. “Hot water on demand with no storage whatsoever is what tankless technology is all about,” says Fleming.

Measuring 17.3 inches wide x 27.6 inches high x 14.8 inches deep, both units are equipped with a gas leak detector and a water leakage cutoff. Other key features include:

• BUILT-IN DIGITAL DISPLAY: In addition to controlling operations, the integral digital display permits basic servicing without the need for a remote device. Located on the front panel, this readout assists in the troubleshooting by indicating flow rates, tem-perature and common error codes.
• 12-YEAR WARRANTY: Like other ecoTOUGH models, the NRCP98-DV and the NRCP1112-DV protect the environment by heating water strictly on demand, while offering a longer product life cycle than storage tank-type models. The warranty for each unit is 12 years on the two heat exchangers, made of long-lasting, high-grade stainless steel; five years on parts; one year on labor.
• ECO-FRIENDLY OPERATION, COMPONENTS: Both models promise lower emissions, reduced electrical consumption, smaller amounts of potentially hazardous construc-tion materials, and easier recyclability of those materials and components once the product is removed from service.

For more information on the NRCP98-DV and the NRCP1112-DV condensing tankless water heaters, visit www.noritz.com.

New training supplement gives plumbing and heating contractors of all experience and skill levels an easier way to gain product knowledge.

Noritz America today announced the release of its Online Residential Level 1 (R1) tankless water heater training for plumbing and heating contractors. The Noritz University course will supplement personal training by Noritz sales personnel, allowing those tradespeople who are unable to attend in-person sessions the ability to gain and deepen their tankless knowledge quickly and effectively.

“The training is useful for contractors of all levels of experience, because we continue to develop and improve our technology,” says Jason Fleming, Marketing Manager for Noritz America. “Now there’s a new way to get the right information quickly and efficiently without always having to travel to a Noritz facility or a distributor location.”

The Noritz website will host the training slides, which also furnish information on a shortcut to Training signup, available courses, as well as the benefits of participating in the company’sPROCard rebate program. A checkpoint quiz at the end of the module allows contractors to complete their education courses in order to be listed in the “Find an Installer” section of the website, while also elevating their status as PROCard members.

The 45 training slides in the new R1 program take approximately an hour to complete, according to Fleming. Topics include:

PRODUCT LINE

• What is a Tankless Water Heater?
• Residential Condensing and Non-Condensing Product Lines
• Large Residential/Commercial Product Line

INSTALLATION

• Sizing
• Gas
• Combustion Air
• PVC Considerations
• Direct and Standard Venting, Vent Termination Clearances
• Circuit Board Dipswitches
• Special Applications

MAINTENANCE

• Water Treatment
• Descale Procedure

Noritz intends to expand its instruction on these key tankless topics in future courses. “It’s always beneficial to get the latest on our products,” says Fleming. “The more a contractor knows, the easier it is for him to sell his knowledge, skills and services.”

For more information on the full line of Noritz tankless water heating products, visit www.noritz.com. You can also telephone us at 866.766.7489 or e-mail us at support@noritz.com.

• Tronic 5000 Tankless Water Heaters are Electric
• New WH36 Model  Provides 5 Gallons of Hot Water a Minute
• 97% Efficient with Minimal Stand-by Loss
• Endless Hot Water for Up to Two Major Applications at a Time
• Compact and Lightweight Wall-Mounted Units

Londonderry, NH – Bosch Thermotechnology has introduced a new higher kW unit – the WH36 – to its family of Tronic electric tankless hot water heaters. The Tronic 5000 WH36 comes with an efficiency rating of 97% and can provide endless hot water for up to two major applications at a time. Like all Tronic 5000 models it can be installed virtually anywhere inside a home to provide whole house hot water on demand – for the WH36 at 5 gallons per minute.

Compact and lightweight Tronic 5000 models – WH17, WH27 and WH36 – can be used in smaller homes and specific home conversion applications with hard to reach locations requiring extra hot water: in-law suites, garage apartments, pool houses and office suites with an attached

bathroom/shower.  They can also be used to provide supplemental hot water for high-flow fixtures.

Tronic 5000 models conserve energy by experiencing minimal stand-by loss and have modulating elements that ensure a constant output temperature for hot water comfort. They come with a filter screen on the units’ inlet and

provide enhanced scale resistance buildup over time.

Tronic 5000 models require hard wiring through double-pole breakers in the breaker box and require varying amperage service (WH17 80 amps –WH27 120 amps – WH36 180 amps). (Note: For Canadian amperage requirements, consult the Tronic 5000 product literature.)

For more information and specification data on the new models and the entire Tronic family, visit www.boschheatingandcooling.com.

Bradford White recently announced the addition of its exclusive ICON HD™ Commercial Control System to the company’s 100-gallon, 399,999 BTU/Hr. eF Series® ultra-high efficiency water heater. The ICON HD™ is an intelligent Honeywell® integrated control with a digital LCD display that combines temperature control, diagnostic codes, system functions, and operational status into a single, intuitive control unit.

Features of the ICON HD™ Commercial Control System include the following: eight different service screens for simplified access to troubleshooting features including temperature sensor readings and current status; multiple error codes for precise diagnostics and accurate service; error code history for troubleshooting assistance; viewable flame sense current indicator for predicting and avoiding disruptions in performance; and a communication port that is compatible with Bradford White’s OnGuard RMT™ Remote Monitoring Technology and other building management systems.

Commercial water heaters equipped with ICON HD™ can also be upgraded with the optional programmable setback control kit which features 7-day, 4 period/day programmability allowing users to customize temperatures to match their usage patterns, reducing operational costs and saving energy.

Bradford White’s 100-gallon, 399,999 BTU/Hr. ultra-high efficiency water heater is the largest of 12 eF Series® models. In addition to the ICON HD™, other features include class-leading thermal efficiency ratings as high as 94%, quiet operation, a stainless steel alloy burner tube, a durable direct spark ignition system, a modulating blower, excellent installation flexibility with zero inch clearance to combustibles, and multiple venting configurations including direct or power direct venting, balanced or unbalanced venting, and vertical or horizontally venting.

To learn more about the ICON HD™ Commercial Control System and eF Series® Ultra High Efficiency water heaters, please visit www.bradfordwhite.com.