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Free Energy Band
RCU61U
Room Temperature Controller
for CAV Systems
Description
Features
Application
Product Number
The RCU microprocessor controlled CAV room controller is designed for air only, or air
and water heating and/or cooling systems. Controllers have proportional response.
• Modulating P-control
• 0 to 10 Vdc output for cooling
• Three-position output 24 Vac for heating
• Operating modes: Normal, Energy Saving, Frost Protection, Standby, and Off
• Active 0 to 10 Vdc input for setpoint shifting
• Operating mode changeover input for remote control
• Adjustable minimum limitation for cooling output
• Deadband between heating and cooling
• Operating voltage 24 Vac
Individual room temperature control in HVAC installations that are heated or cooled.
Controlling these types of equipment:
• Valve actuators
• Air damper actuators
RCU61U
With three-position signal for heating, without operating mode selector
Technical Instructions
Document No. 155-328P25
October 6, 2016
Siemens Industry, Inc.
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Related Manuals for Siemens Free Energy Band RCU61U
Summary of Contents for Siemens Free Energy Band RCU61U
- Page 1 Application Individual room temperature control in HVAC installations that are heated or cooled. Controlling these types of equipment: • Valve actuators • Air damper actuators Product Number RCU61U With three-position signal for heating, without operating mode selector Siemens Industry, Inc.
- Page 2 When used in connection with a VAV controller, this setting must be taken into account. To set minimum limitation, use a screwdriver to adjust the potentiometer (see Figure 2). Values on the scale are percentage of full operation. Page 2 Siemens Industry, Inc.
- Page 3 To set limit stops, remove the setpoint knob by pulling it straight off the shaft. Reposition gray tabs for high and low stops in the holes around the perimeter of knob as required. See Figure 4. Figure 4. Setpoint Limit Stops. Siemens Industry, Inc. Page 3...
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Page 4: Operating Modes
The screw terminals are mounted on the base. The DIP switches and the potentiometer are located at the rear of the unit. To access the DIP switches, remove the controller from the controller base. See Figure 5. Figure 5. DIP Switch Settings. Page 4 Siemens Industry, Inc. - Page 5 Mounting height is approximately 47 inches (120 cm) above the floor. See Figure 6. • The connecting wires can be run to the controller from a recessed conduit box. • Only authorized personnel should open the controller. Figure 6. Acceptable Mounting Height. Siemens Industry, Inc. Page 5...
- Page 6 10. Pull the wiring through the controller base. 11. Position the controller housing over the two mounting lugs located at the top of the controller base, and press down on the cover until the bottom lugs snap in place. Page 6 Siemens Industry, Inc.
- Page 7 12. Terminate the wires per wiring instructions located above the terminal block. Continued Figure 8. Wiring Termination. 13. Reattach the controller to the controller base. Figure 9. Controller Reattachment. 14. Adjust the setpoint dial to the desired setting. The installation is now complete. Siemens Industry, Inc. Page 7...
- Page 8 8. Follow Drywall Mounting Steps 6 through 14. The installation is now complete. Figure 10. 4 × 4-inch Electrical Wall Box Installation. Electrical wall box Adapter mask * Plaster ring Controller base Wall box adapter * Controller * Included with ARG70 Page 8 Siemens Industry, Inc.
- Page 9 7. Follow Drywall Mounting, Steps 6 through 14. The installation is now complete. Figure 11. 2 × 4-inch Electrical Wall Box Installation. Electrical wall box Controller base Wall box adapter * Controller Adapter mask * * Included with ARG70 Siemens Industry, Inc. Page 9...
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Page 10: Maintenance
C22.2 No. 24-93 Connection terminals 2 × 16 AWG or 1 × 14 AWG General Maximum 20 AWG Use solid wires or prepared stranded wires. Weight 0.5 lb (0.23 kg) Housing color Cover White Base Gray Page 10 Siemens Industry, Inc. -
Page 11: Wiring Diagram
Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as design improvements are introduced. Product or company names mentioned herein may be the trademarks of their respective owners. © 2016 Siemens Industry, Inc. Siemens Industry, Inc.