Scarlet’s duct heaters comply wit all regulation to ensure maximum safety and are used in most forced air HVAC systems. These heaters can be used as the main source of heat of a commercial or industrial building or as an auxiliary source of heat, humidity control or multi zone heating.
At Scarlet we use softwares that specify wiring configurations, size, dimensions support racks and electrical controls according to your specification in order to ensure that you receive the best possible quality as fast as possible.
We can built any size of duct heater according to your specification and exact duct size. These heaters are available up to 2000kW.
All Scarlet electric duct heaters are equipped with the necessary controls enclosed in a NEMA 1 control panel.
Insulated terminal box
Round duct construction
Finned tubular duct heaters for more demanding applications
Slip in type
Stainless steel frame
Aluminized steel frame
Automatic circuit brakers
Main supply overcurrent protection
Thermal cutout in central circuit
Thermal cutout in power lines
Thermal cutout operating back-up contactors
Equation to Estimate kW required
A)NEMA 1 terminal box enclosure with vented cover to help keep wiring cooler. Optional enclosures: NEMA 4 (moisture resistant), NEMA 7 (explosion resistant) and NEMA 12 (dust resistant).
B)31/2 inches (89 mm) of mineral insulation in an aluminized steel enclosure minimizes heat losses while keeping the electrical wiring cooler.
C)The heavy duty frame is composed of a 1/4 inch (6 mm) thick steel mounting flange, stainless steel support plate and corner posts to securely hold the heating elements rigid in any mounting position.
D)Field replaceable elements are held in place by a single screw quick release “V” clamp. Optional: Gas tight design using compression or bulkhead fittings to attach elements to the flange prevents leakage of ducted gas into the terminal enclosure.
E)1/4 inch (6 mm) inside diameter thermowell accessed through a 1/8" NPT tapped hole in the flange allows installation of an optional Type J or K thermocouple for sensing the element temperature. An excellent safeguard for your system.
F)Elements are .430 inch (11 mm) diameter and have Incoloy® sheaths for excellent corrosion resistance and scaling resistance at high temperatures. Element hairpin bends are spanked in special dies to re-compact the MGO refractory to eliminate any electrical insulation voids and hot spots.
· Air Drying/Curing Operations
· Booster Air Heater
· Breaking Resistor
· Core Drying
· Forced Air Comfort Heating
· Heat Treating
· Make-Up Air Heating
· Resistor Load Banks