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Server Rack Heater

Trystar is a leading manufacturer of high-capacity Load Banks. The SL Server Rack Heater Series is part of the dedicated line of load banks designed for data center commissioning.

During data center design and construction, it is critical to test the HVAC cooling systems and the hot-aisle / cold-isle design. The SL20 is a 19″ rack mountable air heater that simulates the heat generated by a server. With adjustable load steps to 20 KW and variable airflow speed control, the SL20 can accurately mimic the different low and high power density servers available today.

Operator Controls

  •  Illuminated main power on switch
  •  Illuminated thermal step switches
  •  Fan speed control
  •  Indicator lights for fan-on and over-temperature
  •  Digital mutlimeter displaying voltage, current and KW or frequency

Product Specifications

Main Features

  • Specifically designed for mounting in a 19″ server rack. The 43 pound lightweight design allows for easy handling by one person.
  •  10U high (17.5″) with convenient locating pins and quarter turn locking tabs.
  •  A minimum resolution of 500 Watts allows for precise testing. Thermal load steps start at 1.5 KW.
  •  Force air-cooled, rated for continuous operation.
  •  Standard C20 plugs for connection to power distribution bus.
  •  Digital multimeter displays voltage, current and frequency.
  •  Local operator controls include individual lighted load steps, fan speed control and indicator lights for fan-on and over-temperature.
  •  Variable air speed control allows for precision thermal testing and delta-T adjustments.

Power Rating

20 kW

System Voltages


System Frequencies


Total Capacity Rating Chart
Thermal Rating Per Channel
P1S1: 500W 
S2: 1.5KW
S3: 1.5KW
S1: 500W 
S2: 1.4KW
S3: 1.13KW
S1: 500W 
S2: 1.4KW
S3: 1.13KW
P2S4: 3KW S4: 2.76KW S4: 2.25KW 
P3S5: 3KW S5: 2.76KW S5: 2.25KW 
P4S6: 3.5KW S6: 3.2KW S6: 2.63KW 
P5S7: 3.5KW S7: 3.2KW S7: 2.63KW 
P6S8: 3.5KW S8: 3.2KW S8: 2.63KW 

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