Space-Ray has added four new higher-capacity infrared gas tube heaters to its LTS Series. With capacities ranging from 40,000 BTU/hr to 250,000 BTU/hr., the heaters can be vented, common vented or indirect vented based on application requirements. They come with a factory pre-assembled tube and reflector body and quick six-bolt control box assembly for easy, low cost on-site installation. The heaters can be thermostatically controlled individually or in groups, with unique monitoring, combustion, ignition and safety features.
Optional outside air for combustion can be supplied with a standard 6-inch round duct. The burner comes with a 10-year limited warranty and the tube comes with a five-year limited warranty. Space-Ray can be found on the Web at www.spaceray.com or e-mail firstname.lastname@example.org.
Sterling HVAC Products has introduced the Shield stainless steel, tubular, gas-fired unit heater to provide natural gas or propane heating for commercial greenhouse growers, with a tubular heat exchanger constructed of heavy-duty, 20-gauge, stainless steel for maximum protection against moisture and rust.
The durable, tubular heat exchanger offers efficient and uniform heat transfer. Features include a pilotless direct spark ignition system, power venting to reduce outages and standby losses to provide more than 80 percent thermal efficiency. Controls are easily accessible in one centrally located control panel. Models range from 150,000 to 400,000 BTU input to handle the heating needs of all greenhouses. All units are backed by a five-year warranty. More online at www.sterlinghvac.com