{
 "manufacturer": "Critical Room Control",
 "manufacturer_slug": "critical-room-control",
 "model": "CRC-FHM / CRC-FHC fume hood monitor / controller",
 "model_slug": "crc-fhm-fhc-fume-hood",
 "aliases": [
  "CRC-FHM",
  "CRC-FHC",
  "CRC-FHM/C",
  "CRC-FHC-01-B",
  "Critical Room Control fume hood controller"
 ],
 "equipment_type": "Fume hood airflow monitor / controller",
 "applies_to": "Critical Room Control CRC-FHM fume hood monitors and CRC-FHC fume hood controllers with the BACnet MS/TP network option (-B).",
 "summary": "The CRC-FHM/FHC is a touch-screen fume hood monitor and controller for face velocity, constant volume or sash-sensing volumetric control, driving CRC-CLV valves, exhaust terminals or drives. Its BACnet MS/TP map is all Analog Values: face velocity and flow, sash area and position, hood mode and alarm condition, setpoints and alarm limits, and PI tuning and valve commissioning values.",
 "bacnet_transport": [
  "BACnet MS/TP"
 ],
 "firmware": null,
 "default_device_instance": null,
 "access_inferred": false,
 "notes": [
  "Mode and alarm condition are Analog Values with coded numbers, not multistate objects.",
  "Setpoints and alarm limits are in FPM or CFM depending on the hood's control type.",
  "The data sheet prints the AV 16-21 page twice (pages 5 and 6); they are listed once.",
  "The maker recommends changing the K-factor at the hood controller rather than over the network.",
  "Modbus, N2 and LON are offered with optional cards; only BACnet MS/TP is listed here."
 ],
 "integration": {
  "summary": "Set the MS/TP baud, MAC address and device instance on the touch screen. Write AV 9 to switch the hood between in use, standby and emergency, read AV 5 for face velocity or flow and AV 7 for exhaust CFM, and alarm on AV 10.",
  "minimum_points": [
   {
    "ref": "AV 9",
    "name": "Mode",
    "why": "Mode: 1 in use, 2 standby, 3 emergency"
   },
   {
    "ref": "AV 4",
    "name": "In Use Set Point",
    "why": "In-use face velocity / flow setpoint"
   },
   {
    "ref": "AV 6",
    "name": "Standby Set Point",
    "why": "Standby setpoint"
   },
   {
    "ref": "AV 5",
    "name": "Current Air Flow/Velocity",
    "why": "Face velocity or flow, per control type"
   },
   {
    "ref": "AV 7",
    "name": "Current CFM",
    "why": "Hood exhaust flow, CFM"
   },
   {
    "ref": "AV 14",
    "name": "Current Sash Open Percent",
    "why": "Sash opening, %"
   },
   {
    "ref": "AV 10",
    "name": "Condition",
    "why": "Hood alarm: 1 normal, 2 caution, 3 alarm"
   }
  ],
  "enable": null,
  "heartbeat": null,
  "remote_sensors": null,
  "setup": [
   "Baud rate, MAC address and instance ID are set on the touch screen.",
   "RS-485 connection; order the -B network option for BACnet."
  ],
  "gotchas": [
   "Mode and alarm condition are coded AVs; map the numbers to text in the BMS.",
   "Gain, flow limit and transducer range objects are commissioning values; don't write them routinely."
  ]
 },
 "source": {
  "title": "CRC-FHM/C Fume Hood Monitor / Controller data sheet, BACnet Point Map",
  "doc_number": null,
  "revision_date": "Rev 6.0",
  "url": "https://storage.googleapis.com/wzukusers/user-29384423/documents/5a4bb9c11adeea01CgDW/FHC%20Data%20Sheet.pdf"
 },
 "points": [
  {
   "type": "AV",
   "instance": 0,
   "name": "Analog in 1",
   "description": "Raw signal, analog input 1 (wiring check)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 1,
   "name": "Analog in 2",
   "description": "Raw signal, analog input 2 (wiring check)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 2,
   "name": "Analog in 3",
   "description": "Raw signal, analog input 3 (wiring check)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 3,
   "name": "Analog in 4",
   "description": "Raw signal, analog input 4 (wiring check)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 4,
   "name": "In Use Set Point",
   "description": "In-use setpoint (face velocity or flow)",
   "units": "FPM/CFM",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 5,
   "name": "Current Air Flow/Velocity",
   "description": "Hood face velocity or flow, per control type",
   "units": "FPM/CFM",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 6,
   "name": "Standby Set Point",
   "description": "Standby (unoccupied) setpoint",
   "units": "FPM/CFM",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 7,
   "name": "Current CFM",
   "description": "Actual hood exhaust flow",
   "units": "CFM",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 8,
   "name": "Current Sash Area",
   "description": "Sash open area",
   "units": "SQFT",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 9,
   "name": "Mode",
   "description": "Hood mode",
   "units": "",
   "access": "W",
   "states": "1=In use, 2=Standby, 3=Emergency Override, 4=Decommission"
  },
  {
   "type": "AV",
   "instance": 10,
   "name": "Condition",
   "description": "Hood alarm condition",
   "units": "",
   "access": "R",
   "states": "1=Hood Normal (no alarm), 2=Caution, 3=Alarm"
  },
  {
   "type": "AV",
   "instance": 11,
   "name": "Alarm High",
   "description": "High alarm setpoint above the control setpoint",
   "units": "FPM/CFM",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 12,
   "name": "Alarm Low",
   "description": "Low alarm setpoint below the control setpoint",
   "units": "FPM/CFM",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 13,
   "name": "Pass through CFM IN",
   "description": "Summed flow from other hoods, passed to the lab controller",
   "units": "CFM",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 14,
   "name": "Current Sash Open Percent",
   "description": "Sash position, % of full open",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 15,
   "name": "K Factor",
   "description": "K-factor of the CRC-CLV exhaust valve",
   "units": "",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 16,
   "name": "Valve Sensor High",
   "description": "Valve flow transducer range, high",
   "units": "\"WC",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 17,
   "name": "Valve Sensor Low",
   "description": "Valve flow transducer range, low",
   "units": "\"WC",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 18,
   "name": "P Gain",
   "description": "PI loop proportional gain",
   "units": "",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 19,
   "name": "I Gain",
   "description": "PI loop integral gain",
   "units": "",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 20,
   "name": "Min Flow",
   "description": "Minimum hood flow",
   "units": "CFM",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 21,
   "name": "Max Flow",
   "description": "Maximum hood flow",
   "units": "CFM",
   "access": "W",
   "states": ""
  }
 ],
 "page": "https://easybacnet.com/bacnet-points-lists/critical-room-control/crc-fhm-fhc-fume-hood",
 "note": "Provided as-is. Point availability varies by firmware and options; verify against the live device.",
 "disclaimer": "DISCLAIMER: reference only, provided AS IS with no warranty. May contain errors or be out of date. You must verify every point against the manufacturer's current documentation and the live device before use. easybacnet.com accepts no liability for its use and is not affiliated with the manufacturer. Terms: https://easybacnet.com/terms#content"
}