The Two-Stage Principle
Canada is a country of widely varying temperatures from season to season. Our research has documented that a typical commercial, industrial and residential building requires its total designed heating capacity only 10 percent of the heating season. The two-stage RE-VERBER-RAY LD SERIES was specifically developed to more efficiently meet the heating requirements of the other 90 percent of the heating season - particularly for commercial, industrial and residential applications requirements. The two graphs shown here between single stage infra-red heating and the two-stage technology introduced to Canada in 1994 by Brant Radiant Heaters.

Independent Testing Conclusions Independent test data has compared the fuel efficiency of two-stage versus single stage infra-red heating and conclusively demonstrated that RE-VERBER-RAY two-stage technology used in the LD SERIES results in a clearly more efficient heating system over standard single-stage. Highlights of the conclusions from the Technical Reports produced include: 1. A significant reduction in the number of on-off cycles (a reduction of some 35 percent) resulting in increased energy savings, improved comfort and extended product life. 2. A minimum 12 percent energy saving utilizing Re-VERBER-RAY two stage technology when compared with single stage. 3. For really cold Winter days - about ten percent of the heating season - full heat output is readily available on demand with the "high-fire" mode of two-stage. The "low-fire" mode more clearly parallels the actual requirements for the remaining 90 percent of the heating season. 4. The greater overall performance efficiency of the RE-VERBER-RAY two-stage technology used in the LD SERIES results in a cleaner environment.

Typical Applications
INDUSTRIAL/COMMERCIAL APPLICATIONS
The RE-VERBER-RAY LD Series of natural gas and propane heaters are low input two-stage infra-red heaters designed for reduced mounting heights or low input requirements. Typical industrial and commercial building installations may include:

	Lunchrooms	Mezzanine Areas
	Outdoor Patios	Churches
	Showrooms	Kennels
	Parts Counters	Restaurants

RESIDENTIAL APPLICATIONS
Select models of the RE-VERBER-RAY LD SERIES of natural gas and propane heaters are design-certified by the Canadian Standards Association (CSA) for use in residential applications in specific areas that are adjacent or attached to actual living quarters. The LD Series is not to be installed indoors in traditional living areas of a home. All residential heaters must vent the products-of-combustion out-of-doors. Residential installations may include:

	Home Workshops	Swimming Pools
	Outdoor Patios	Residential Garages
	Solariums

Overall System Features
Two-stage flexibility incorporated in the RE-VERBER-RAY LD SERIES ensures maximum comfort and efficiency through a "calculated input differential" - the difference between "high-fire" and "low-fire" levels of operation. The overall design efficiency provides greater flexibility in new and retrofit applications through modular construction which allows radiant tube configurations accommodating 45, 90 or 180 degree elbows. Optional outside combustion air allows combustion air and heater controls to be isolated from adverse conditions. The RE-VERBER-RAY LD SERIES is approved by the Canadian Gas Association (CGA) for vented or unvented use.

Exchanger Features
The combustion chamber tube and radiant tubes are manufactured from three inch (7.6 cm) diameter 16 gauge titanium alloyed aluminized steel and 16 gauge aluminized Type 1 respectively for corrosion resistance and exceed the ML 500 hour salt spray test. The exchanger coupling system utilizes a "slip fit" system, as well as a three inch (7.6 cm) band clamp for added security and a continuous linear appearance. The exterior coating of the exchanger on the RE-VERBER-RAY LD SERIES is specially blended for maximum emissivity, corrosion resistance and architectural appeal. The final component in the system is the exclusive "Opti-Thermal" stainless steel positive pressure turbulator baffle, designed to maximize heat transfer and minimize exhaust loss.


Engineered Reflector Design
Fully adjustable polished aluminum parabolic reflectors complete with end caps can be installed at angles from 0 to 45 degrees directing heat only where required with the RE-VERBER-RAY LD SERIES. The integrated hanging system includes state-of -the-art hangers and a unique reflector tension spring that prevents reflector vibration - all easily installed without tools.

Control Box Features
Staging indicator lights mean continuous monitoring of the RE-VERBER-RAY LD SERIES for optimal energy savings. The fixed metering orifice provides maximum combustion efficiency from factory preset parameters. Dual safety pressure switches continuously monitor burner operation and the proven globar ignition system assures ignition under adverse conditions. The burner sight glass allows the globar operation to be monitored easily from the floor.

The state-of-the-art MICRO 6OU-24 used in the RE-VERBER-RAY LD SERIES is a self-diagnostic microprocessor based control that incorporates pre and post purge firing as well as "hard" and "soft" lockout. "Hard lockout" for complete 100 percent heater shutdown of the burner and fan which can only be restarted by resetting the thermostat and "soft lockout" which facilitates an automatic 30 minute restart if the heater goes out because of environmental conditions (i.e. winds that exceed 40 miles (66 km) per hour.)


[MODEL SPECIFICATIONS]