Installation Sheet TRCn500nnnn-VC Viconics Room Controller

Product Overview

Application-specific and programmable Room Controller suitable for commercial and high-end hospitality markets.

Viconics Room Controller Models:

• VRC3500: Low-voltage fan coil unit and zone control Room Controller.
• VRC6500: Rooftop, heat pump, and indoor air quality Room Controller.

Regulatory Compliance and Safety Information

Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel. Viconics Technologies assumes no responsibility for consequences arising from the use of this material. Read instructions carefully before installation. Technical literature and declarations of conformity are available on the Viconics Technologies website (www.viconics.com). Contact a local Viconics Technologies sales office for hard copies or additional information.

Dimensions

Diagram description: A technical drawing showing the physical dimensions of the Viconics Room Controller. Key dimensions provided are 132.7 mm (5.2 in) in length, 83.3 mm (3.3 in) in width, and 27.9 mm (1.1 in) in depth. It also indicates mounting hole diameters of approximately 3.8 mm (0.1 in) and a larger diameter of 60.3 mm (2.4 in).

Installation Restrictions

Loss of Control

NOTICE: EQUIPMENT DAMAGE

• Control scheme designers must consider potential failure modes of control paths and provide safe states for critical functions (e.g., emergency stop, over-travel stop).
• Separate or redundant control paths are required for critical functions.
• Communication links in system control paths require consideration of transmission delays or failures.
• Equipment using communication links must be thoroughly tested before service.

Failure to follow these instructions can result in equipment damage.

¹ Refer to NEMA ICS 1.1 (latest edition) for additional information on transmission delays or failures.

Electrostatic Discharge

NOTICE: EQUIPMENT DAMAGE

Circuit boards and expansion modules are sensitive to static electricity. Observe precautions when handling controller components:

• Keep static-producing materials (plastic, upholstery, carpeting) away from the work area.
• Store static-sensitive components in protective packaging.
• When handling static-sensitive components, wear a conductive wrist strap connected to the component or ground through a minimum of 1 megohm resistance.
• Avoid touching exposed conductors and components.

Failure to follow these instructions can result in equipment damage.

Installation

NOTICE: EQUIPMENT DAMAGE

• Installation must be performed by a qualified technician.
• Label wires before removing an existing Room Controller.
• Recommended wire size: 18-24 AWG for single wires per terminal; 22-24 AWG for dual wires (e.g., Universal Input Commons). For 18 AWG, use a 2-to-1 connector for common wires.
• For RS-485 terminals with 18 AWG wires, a 2-to-1 connector is required.
• Electronic controls are static-sensitive; discharge yourself before handling.
• Short circuits or incorrect wiring can permanently damage the controller or equipment.
• Room Controllers are for operating control only, not safety devices. Tampering or unintended application voids the warranty.

Failure to follow these instructions can result in equipment damage.

For BACnet-isolated devices, use a 1.5-pair BACnet wire. Refer to the Viconics Room Controller Operating Guide for configuration details.

Location

NOTICE: EQUIPMENT DAMAGE

• Do not install on an exterior wall.
• Do not install behind a door.
• Do not install near direct heat sources.
• Do not install near air discharge grills.
• Do not install in direct sunlight.
• Ensure sufficient natural air circulation around the controller.
• Ensure the wall surface is flat and clean.
• Keep external thermal and CO2 sensor wiring away from noisy electrical sources.
• Install 5 feet (1.5 meters) above the floor.

Failure to follow these instructions can result in equipment damage.

Cleaning the Room Controller

NOTICE: EQUIPMENT DAMAGE

• Use a soft, pre-moistened lint-free cloth.
• Avoid moisture in openings.
• Do not spray directly on the controller or use compressed air.
• Do not use caustic/corrosive products, ammonia, solvents, or cleaning products with alcohol or grit.
• Blocked airflow due to dirt or obstructions can cause incorrect readings.
• Never use tools directly on the touchscreen.
• Never paint the Room Controller.
• Do not drop, crush, or expose the controller to liquids.
• Do not use a damaged device (e.g., cracked screen).

Failure to follow these instructions will result in damage to the unit and void the manufacturer's warranty.

Finding Connectors on the Device

Diagram description: An illustration showing the location of key components on the Viconics Room Controller, including the Reset Button, USB Type-C Connector, Expansion Module Port, Jumpers, and Wiring Terminals. It details access points at the bottom of the unit.

Components accessible by opening the bottom door:

• Reset button
• USB Type-C connector (for firmware updates)

Components located on the base:

• 1x Expansion Module Port
• 2x Jumpers
• 30x Wiring Terminals (refer to "Terminal Identification & Function" on page 4 for details).

Diagram description: A detailed view of the terminal block layout, showing labels like RC, RH, RP, C, D1-D5, A1/D6-A4/D9, RS-485, U1-U8, and power input/output connections. It also shows the location of jumpers J1 and J2 and the Expansion Module Port.

Reset Button

Two types of reset operations:

• Normal reset: Press the reset button to stop and restart the device.
• Factory reset:
  1. Remove the Room Controller cover from the base OR power it off.
  2. Press and hold the reset button while snapping the cover back into place OR powering it back on.

Refer to "Mounting the Device" on page 3 for cover installation/removal.

Expansion Module Port

The Expansion Module Port allows insertion of one (1) module for CO₂ detection. This feature is planned for a future release.

Jumpers

Two jumpers are available on the Viconics Room Controller.

Diagram description: An illustration showing the location of jumpers J1 and J2, with labels indicating their function related to power input and digital outputs.

Jumper Configuration Note: If a Relay Pack (or other isolated power supply) is used to power the Room Controller:

• It must be connected to the RP and C terminals (indicated in blue).
• The J2 jumper must be removed.

Mounting the Device

Diagram description: A step-by-step visual guide for mounting the Viconics Room Controller. It shows:

1. Using two screws (max size #6, 6.9 mm head diameter) to mount the base to the wall.
2. Pulling wires through the opening, ensuring sufficient length for terminal connection and avoiding overlap.
3. Stripping wires to 6 mm (1/4 in) and securing them to terminals using a flat screwdriver.
4. Gently pushing excess wiring back into the opening, aligning the cover with the base, and sliding it down.
5. Snapping the cover into place from the bottom.
6. Installing the security screw on the bottom using a square screwdriver.

To remove the cover: Remove the security screw with a square screwdriver and pull the bottom side of the cover.

Terminal Identification & Function

TRC3500: Fan Coil Unit (FCU) with an Electronically Commutated Motor (ECM) Fan

TRC3500: Fan Coil Unit (FCU) with 3-Speed Fan

TRC6500

Commissioning the Device

To enter set-up mode, tap and hold the screen area for 3 seconds. Select the desired user from the list and enter the PIN code to prevent unauthorized access. Refer to the Operating Guide for HMI configuration details.

NOTICE: PIN CODE

Repeated incorrect PIN entries will block the user profile temporarily. Failure to follow these instructions may prevent controller configuration.

Occupancy Sensing

The occupancy sensor's location is critical. Install the Room Controller near a door, but not blocked by it, in an area with high occupant movement. For optimal detection range, install the controller 5 feet (1.5 meters) above the floor. This placement ensures occupants cross the PIR detection path laterally and within the sensor's range.

The Room Controller uses a Passive Infrared (PIR) sensor with configurable detection ranges:

• High Sensitivity: 30 feet (9 meters)
• Medium Sensitivity: 20 feet (6 meters)
• Low Sensitivity: 10 feet (3 meters)

Example of Recommended Deployment

Diagram description: Illustrates ideal Room Controller placements in two rooms. In an examination room, the controller is placed adjacent to the door where occupant traffic is high and movement is typically lateral to the PIR sensor. In a waiting room, it's placed beside the door, capturing high traffic areas like the entrance, waiting area, and reception desk, ensuring lateral PIR detection.

Example of Non-Recommended Deployment

Diagram description: Shows four Room Controllers installed in non-ideal locations. In an examination room, one controller is in a low-traffic corner, potentially blocked by the door, while another is opposite the door, possibly outside the detection zone with non-lateral movement. In a waiting room, one is in a corner where the door might block it, and another is beside the reception desk, potentially missing occupants below the recommended height or with non-lateral movement.

Room Controller PIR Sensor Details

Diagram description: A diagram detailing the PIR sensor's coverage and limitations. It shows a field of view for lateral movement detection (up to 120° horizontally, 80° vertically) and indicates that it cannot detect movement directly towards the sensor or detect stationary occupants.

Part Numbers

General Specifications

Electrical

• Input: 24 Vac ±15% recommended, Absolute Max 29.5 Vac, 50/60 Hz or 24 Vdc ±15%
• Peak device consumption: Up to 6 VA with CO2 sensor
• Output Load: Max total 94 VA
• Transformer maximum rating: 100 VA, 4.17 A, Class 2
• Output ratings: 5 DO (Electronic Relays): 24 Vac or 24 Vdc ±15%, 50/60 Hz, 1.0 Amp. 4 UO (Electronic Relays or Analog Outputs - Configurable): 0 - 10 Vdc, 5 mA max
• Analog outputs: 4 (A1 - A4)
• Universal I/Os: 4 (U1 - U4)
• Universal inputs: 4 (U5 - U8)
• Digital outputs: 9 (D1 - D9)
• Supported signals: 0 - 10 Vdc
• Real-time clock: 7-day internal battery backup
• UL file number: E527425

WiFi Interface

• 2.4GHz/5GHz b/g/n/ac module
• Antenna type: Omnidirectional, internal.
• Contains FCC ID: VPYLB2AE, IC: 772C-LB2AE

Environment

• Environmental conditions: Indoor use only
• Ambient temperature, operating: 0 to 50 °C (32 to 122 °F)
• Humidity, operating: 0 to 95% RH non-condensing
• Ambient temperature, storage: -30 to 50 °C (-22 to 122 °F)
• Humidity, storage: 0 to 95% RH non-condensing

Dehumidification

• Setpoint range: 30 to 95% R.H.

Cooling Setpoint

• Occ, unocc and standby cooling setpoint range: 12 to 37.5 °C (54 to 100 °F)

Heating Setpoint

• Occ, unocc and standby heating setpoint range: 4.5 to 32 °C (40 to 90 °F)

Temperature Display Range

• Room and outdoor air temp. display range: -40 to 50 °C (-40 to 122 °F)

Proportional Band

• Proportional band for room temp. control: Cooling and Heating: Default: 1.8°C (3.2°F)

Sensors

• Temperature sensor resolution: ± 0.1 °C (± 0.2 °F)
• Temperature control accuracy: ±0.5°C (± 0.9 °F) @ 21 °C (70 °F) typical
• Humidity sensor accuracy: Reading ranges from 10 - 90% R.H. non-condensing
  • 10 to 20% precision: 10%
  • 20 to 70% precision: 5%
  • 70 to 90% precision: 10%
• Humidity sensor stability: Less than 0.25% yearly (typical drift)

Mechanical

• Dimensions: 132.8 L x 82.5 W x 27.9 H mm (5.2 L x 3.2 W x 1.1 in)
• Weight: 241.4 g (0.5 lb)
• Material: Polycarbonate
• Wire gauge: Power supply: 18AWG, Communications: 22-24 AWG
• Enclosure: Polycarbonate
• Display: Glass

Display

• Resolution: 800 x 480 pixels (WVGA)
• Aspect ratio: 16:10
• Size: 109.2 mm (4.3 in)
• Type: Capacitive 226 Pixels per Inch (PPI)
• Color: 16 million colors
• Languages: Arabic, Chinese (Simplified), Czech, Danish, Dutch, English (Default), Finnish, French, German, Hebrew, Hungarian, Indonesian, Italian, Japanese, Norwegian, Polish, Portuguese, Russian, Slovak, Spanish, Swedish, Turkish
• Brightness control: 400 cd/m², 16 levels
• LED lifetime: 50,000 hours (brightness reduced to 25% of original value at 25 °C)

Ingress Protection

• Rating: IP 20

Plastic Flame Rating

• UL94 V-0

Pollution Degree

• 2

Color

• White or black

Surface Finish

• Matte

Installation

• Placement: Wall mounted in rooms and open spaces

FCC ID: 2BATG-SXWTRC; IC ID: 30486-SXWTRC

Addendum - California Proposition 65 Warning Statement

WARNING: This product may expose you to chemicals including Lead (known to cause cancer, birth defects, or reproductive harm) and Bisphenol A (BPA) (known to cause birth defects or reproductive harm). For more information, visit www.P65Warnings.ca.gov.

O: Indicates concentration is below the limit specified in GB/T 26572.

X: Indicates concentration exceeds the limit specified in GB/T 26572 in at least one homogeneous material.

This table is made according to SJ/T11364.

Regulatory Notices

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.

If this equipment causes harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. To avoid exceeding FCC radio frequency exposure limits, install and operate with a minimum distance of 20 cm (7.9 inches) between the antenna and your body during normal operation. Users must follow specific operating instructions for satisfying RF exposure compliance.

This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada's licence-exempt RSS(s). Operation is subject to the following two conditions: (1) This device may not cause interference. (2) This device must accept any interference, including interference that may cause undesired operation of the device.

This device complies with the Canadian ICES-003 Class B specifications. CAN ICES-003(B) / NMB-003 (B).

French translation of regulatory notices is also provided, covering similar points regarding FCC compliance, interference, and Canadian standards.