Viconics R820 Series Manuals

Viconics R820 Series Manual  (5 pages)

• Identifier: id-2294270
• Brand: Viconics
• Device: Control Unit
• Type: Manual , PDF
• Key Aspects: Illustrations and Diagrams Demonstrating Processes, Community Best Practices, Installation Troubleshooting Guides
• UPD Date: 18.08.2026
• Source File: 1993355.pdf
• Pages: 5
• Description: Product instruction handbook for the Viconics R820 Series. The guide offers support information and reset instructions, technical overview, technical assistance.

Key Pages and Contents:

• SCR POWER CONTROLS

  • 240 Vac up to 600 Vac models • 10 Amps up to 75 Amps models • 1 phase or 3 phase models DESCRIPTION The Viconics R820 series SCR power controls are designed for cost effective, precise modulation of electric loads for most electric heating applications. ( App

• SPECIFICATIONS HIGH VOLTAGE WIRING

  Operating Conditions: 0°C to 80°C ( 32°F to 176°F ) 0 % to 95 % R.H. non-condensing See power derating curves document Thermostatic protection: Self resetting. Auto shut off when SCR ambient

• R820 single phase

  A B C D Weight (LBS) R820-211 4.5 " 2.25” 0.375” 3.75” 1.80 R820-321 4.5 " 2.25” 0.375” 3.75” 1.80 R820-341 6.5 " 3.25” 1.375” 3.75” 2.40 R820-421 4.5 " 2.25” 0.375” 3.75” 1.80 R820-441 6.5 " 3.25” 1.375” 3.75” 2.40 R820-471 10.0 " 5.00” 3.125” 3

• DIP SWITCH ADJUSTMENTS PER APPLICATIONS

  INPUT SIGNAL SWITCH #1 SWITCH #2 SWITCH #3 SWITCH #4 0 to 10 Vdc control signal ( 2 to 10 Vdc control range ) Off Off Off On 4 to 20 mA control signal Off Off On Off 0 to 135 Ω control signal On On Off Off TYPICAL APPLICATIONS 0 To 10 Vdc Room Or Duct Ther