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RCC10U
Room Temperature Controller
for Two-pipe Fan Coil Units
Description
Features
Application
Product Number
Room temperature controller for two-pipe fan coil units.
• Output for on/off valve actuator.
• Output for three-speed fan.
• Dual setpoint temperature scale.
• Control depending on the room or return air temperature.
• Automatic Heating/Cooling changeover.
• Operating modes: Normal, Energy Saving, Freeze Protection and Off.
• Operating mode changeover input for remote control.
• Selectable control parameters.
• Operating voltage 120 Vac.
Typical use:
• Controlling room temperature in individual rooms that are heated or cooled with two-
pipe fan coil units.
• Opening or closing a valve
• Switching a three-speed fan.
Suitable for use in systems with:
• Automatic Heating/Cooling changeover.
• Heating only/Cooling only or Heating and Cooling applications.
RCC10U
With input for return air temperature sensor
Technical Instructions
Document No. 155-712
September 27, 2007
Siemens Industry, Inc.
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Related Manuals for Siemens RCC10U
Summary of Contents for Siemens RCC10U
- Page 1 • Opening or closing a valve • Switching a three-speed fan. Suitable for use in systems with: • Automatic Heating/Cooling changeover. • Heating only/Cooling only or Heating and Cooling applications. Product Number RCC10U With input for return air temperature sensor Siemens Industry, Inc.
- Page 2 Technical Instructions RCC10U Room Temperature Controller Document Number 155-712 for Two-pipe Fan Coil Units September 27, 2007 Accessories ARG70 Adapter plate, for 2-inch × 4-inch or 4-inch × 4-inch electrical wall boxes QAH11.1 Changeover/remote sensor 141-570 Lockable Thermostat Guard Ordering The QAH11.1 temperature sensor (which can be used as a return air temperature or...
- Page 3 Closed) valve/actuator assemblies cannot be used with the RCC10U Controller. Return Air Temperature The RCC10U provides control based on either the measured room temperature or the fan coil unit’s return air temperature. Changeover is automatic if a QAH11.1 cable temperature sensor is connected to the device.
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Page 4: Operating Modes
Technical Instructions RCC10U Room Temperature Controller Document Number 155-712 for Two-pipe Fan Coil Units September 27, 2007 Purging Function The changeover sensor initiates the change from Heating to Cooling mode even if the two-way valves are shut down for a long period of time. To ensure this function, the valves are opened for one minute at two-hour intervals. -
Page 5: Mechanical Design
RCC10U Room Temperature Controller Technical Instructions for Two-pipe Fan Coil Units Document Number 155-712 September 27, 2007 Energy Saving Mode In Energy Saving mode, the heating setpoint is 61°F (16°C) and the cooling setpoint is 82°F (28°C), independent of the position of the setpoint knob. This operating mode will be activated when input D1 for operating mode changeover is active and DIP Switch No. - Page 6 Technical Instructions RCC10U Room Temperature Controller Document Number 155-712 for Two-pipe Fan Coil Units September 27, 2007 Table 2. DIP Switches. DIP Switch No. Description Position ON Position OFF Fan control Fan control is temperature- Fan control in Normal dependent in all operating modes...
- Page 7 A Wall Box Adapter Kit (ARG70), ordered separately, is recommended but not required to mount an RCC10U controller to a 2-inch × 4-inch electrical wall box. An ARG70 is required for 4-inch × 4-inch electrical wall box mounting.
- Page 8 Document Number 155-712 for Two-pipe Fan Coil Units September 27, 2007 Installation An ARG70 wall plate adapter is required to mount an RCC10U controller to a 4-inch × Instructions 4-inch electrical wall box. 4-inch × 4-inch Electrical 1. Loosen the screw at the bottom of the controller with a small screwdriver.
- Page 9 RCC10U Room Temperature Controller Technical Instructions for Two-pipe Fan Coil Units Document Number 155-712 September 27, 2007 4-inch × 4-inch Electrical 7. Terminate wires per wiring instructions located above the terminal block. Wall Box Mounting, Continued Figure 8. Wiring Termination.
- Page 10 Two-pipe Fan Coil Units September 27, 2007 2-inch × 4-inch Electrical An ARG70 wall plate adapter is recommended, but not required to mount an RCC10U Wall Box Mounting controller to a 2-inch × 4-inch electrical wall box. 1. Loosen the screw at the bottom of the controller with a small screwdriver.
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Page 11: Specifications
RCC10U Room Temperature Controller Technical Instructions for Two-pipe Fan Coil Units Document Number 155-712 September 27, 2007 Operating voltage 120 Vac +10/-15% Specifications Frequency 50/60 Hz Power Supply Power consumption Maximum 10A Control Outputs (Fan) 11, 10, 9 120 Vac max./5 res./3.5 FLA/7.0 LRA (Valve) 7 120 Vac max./5 res./3.5 FLA/7.0 LRA... -
Page 12: Wiring Terminals
Technical Instructions RCC10U Room Temperature Controller Document Number 155-712 for Two-pipe Fan Coil Units September 27, 2007 Wiring Terminals Status input, Return air temperature sensor Measuring neutral, Return air temperature sensor and changeover sensor Status input, Changeover sensor 4, 5... - Page 13 Dimensions Figure 13. RCC10U and Base Plate in Inches (Millimeters). Figure 14. ARG70 Dimensions in Inches (Millimeters). 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.