Specifications - 5100 Series

Model	5120			5130		5140
Charging Input (kW)	14.0	19.2	24.8	28.8	37.2	38.4	45.6
Single Feed: Minimum Circuit Ampacity (240V Systems) (Includes 25% Derate for Continuous Load)	84	111	140	161	205	211	249
Element Current Draw	59	80	104	120	155	160	190
Element Circuits Required (amps) (240V System - Multiple Feed) System is factory configured with multiple line voltage, single phase circuit connections. If single feed to the element and blowers controls circuits is desired, an optional single feed kit is available. Phase balancing is recommended when making connections in 3-phase applications.	1-20 2-30	1-30 2-40	1-40 2-50	4-40	4-50	4-50	4-60
Number of Elements	8			12		16
Maximum Pump and Blower/Control Load	10 Amps
Pump Voltage	120V (Neutral Conductor Required)
Blowers/Controls Voltage	240/208V / 60 Hz
Element Voltage	240V Standard (208V optional as special factory order) / 60 Hz NOTE: The 240V Element circuits can be connected to 208V in standard configurations; however, the charging input of the system will be derated by 25%.
Dimensions (W x D x H in inches)	29.2" x 47.5" x 46"			29.2" x 47.5" x 57"		29.2" x 47.5" x 68"
Storage Capacity The size and heating ability of the system required for an installation is dependent on the heat loss of the area and the power company’s off-peak hours. In addition, if the system is not installed within the heated area, heat lost statically must be considered when sizing a system. Contact Steffes for assistance in selecting an appropriately sized system. kWh BTU	120 409,440			180 614,160		240 818,880
Pipe Size - Water Inlet/Water Outlet	1"
Outlet Water Temperature Selection Range	50°F/10°C to 185°F/85°C
Maximum Working Pressure	Standard: 20 PSIG requires 30 PSI Pressure Relief Valve Optional: 60 PSIG requires 75 PSI Pressure Relief Valve; 125 PSIG requires 150 PSI Pressure Relief Valve
Maximum Flow Rate (primary loop)	1 GPM per 10,000 BTU of required output at 20°F temperature rise (10 GPM maximum)
Approximate Heater Weight Contact a building contractor or architect if you have structural weight concerns of the installation surface selected. Adhere to all national and local electrical building code placement requirements for electrical heating appliances.	487 lbs			544 lbs		612 lbs
Approximate Brick Weight	1,702 lb			2,458 lb		3,214 lb
Approximate Installed Weight	2,189 lb			3,002 lb		3,826 lb
Number of Brick Whole Brick Half Brick	105 6			150 12		198 12
Maximum Maintainable Heat Loss (BTU/hr) The size and heating ability of the system required for an installation is dependent on the heat loss of the area and the power company’s off-peak hours. In addition, if the system is not installed within the heated area, heat lost statically must be considered when sizing a system. Contact Steffes for assistance in selecting an appropriately sized system.
8 Consecutive Charge Hours	20,414	27,996	34,175	41,994	49,212	55,992	65,615
12 Consecutive Charge Hours	30,621	41,994	45,566	62,991	65,615	83,988	87,487
6/4/6/8 Charge Strategy	30,621	41,994	54,242	62,991	81,363	83,988	99,735
Internal Pressure Drop (assuming 50% glycol mix, see Heat Exchanger Specifications)	0.1 ft @ 2 GPM 0.2 ft @ 4 GPM 0.4 ft @ 6 GPM 0.7 ft @ 8 GPM 1.1 ft @ 10 GPM