Related Manuals for Macurco RD-VRF
Summary of Contents for Macurco RD-VRF
- Page 1 Macurco™ RD-VRF Refrigerant Leak Detector User Instructions IMPORTANT: Keep these user instructions for reference.
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Page 2: Table Of Contents
Sensor Options ..............................7 Installation and Operating Instructions ......................7 Location ................................7 Installation ................................ 8 Terminal Connections ............................. 13 3.3.1 RD-VRF Voltage Power Usage ......................... 13 Operations ..............................14 Power up................................. 14 LED Indicator ..............................15 Display ................................15 Buzzer ................................15 Relay Latching .............................. - Page 3 Field Calibration Procedure ..........................30 7.4.1 Zero the Sensor............................30 7.4.2 Span Calibration............................31 Menu Steps ..............................32 Macurco Gas Detection Product limited warranty..................34 Technical Support Contact Information ........................34 General Contact Information ............................34 REV – 1.0 34-5354-0001-2 P a g e...
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Page 4: General Safety Information
The following instructions are intended to serve as a guideline for the use of the Macurco RD-VRF Refrigerant Leak Detector. This manual will refer to this device as RD-VRF unless content is specific to a model. This manual is not to be considered all-inclusive, nor is it intended to replace the policy and procedures for your facility. -
Page 5: Use Instructions And Limitations
1000ppm and 2000ppm or 10% LEL and 20% LEL of refrigerant gas. These setpoints can be adjusted in the configuration menu. The RD-VRF is gas specific with sensor options that include R-32, R134A, R404A, R-407C, R-410A, R-449A, R-1234YF, and R-1234ZE. The RD-VRF is factory calibrated and tested for proper operation. -
Page 6: Do Not Use For
Do not mount the VRF where the normal ambient temperature is below 14°F or exceeds 122°F (-10°C or above 50°C). The RD-VRF mounts in a standard 2 gang PVC or 4x4 electrical box supplied by the contractor. WARNING This equipment may not function effectively below 14°F or above 122°F (--10°C or... -
Page 7: Sensor Options
3.1 Location An RD-VRF is normally mounted low in the room on a wall or column one foot above the floor in a central area where air movement is generally good. Use the same spacing as for smoke detectors, 30-foot centers, 900 square feet per detector (84 sq. -
Page 8: Installation
2 gang PVC or 4x4 electrical box supplied by the contractor. Mount the unit near the discharge of the fan coil. Do NOT mount the RD-VRF where the normal ambient temperature is below 14°F or exceeds 122°F (below - 10°C or above 50°C). - Page 9 2. Installers must comply with all national and local codes regarding the installation and wiring of line voltage devices. 3. The RD-VRF mounts on a 2 gang PVC or 4x4 electrical box supplied by the contractor. Do not mount the RD- 4. VRF inside another box, unless it has good air flow through it.
- Page 10 Figure 3-3 Front View w/o Faceplate REV – 1.0 34-5354-0001-2 10 | P a g e...
- Page 11 Figure 3-4 Rear View Figure 3-5 Various Profiles Figure 3-5 Relay Wiring REV – 1.0 34-5354-0001-2 11 | P a g e...
- Page 12 Figure 3-6 Digital Wiring Connection Figure 3-7 Digital Wiring Connection to Macurco Control Panel REV – 1.0 34-5354-0001-2 12 | P a g e...
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Page 13: Terminal Connections
Low Voltage Power Connection Connect the RD-VRF to Class 2 power supply only. It is suggested to use a separate transformer for powering the unit or units because of possible interferences from other devices on the same power supply. Connect the RD-VRF to the control cables with terminal plugs. -
Page 14: Operations
4 Operations 4.1 Power up The RD-VRF cycles through an internal self-test cycle for the first minute that it is powered. The unit will execute the test cycle any time power is dropped and reapplied (i.e. power failure). During the entire self-test cycle the indicator LED will flash green. -
Page 15: Led Indicator
4.2 LED Indicator Clean Air – During normal operation, the Power indicator will be green and steady. Warmup – During warmup, the Power indicator will be green and blinking. Alarm – During an alarm condition, the Power indicator will be red and blinking. Fault/Trouble –... -
Page 16: Gas Type Profile Number
To change the settings, remove the cover plate. Locate the MENU and ENTER buttons on the left side of the unit. Default – Factory Settings 4.7.1 The RD-VRF comes pre-programmed with the following default settings: Setting Description: Display Default: (PPM Models) -
Page 17: Select Buzzer Configuration - "Buz
To select the Power Up Test Configuration, in normal mode: 1. Push the Next button to get to “Con” or the Configuration menu. 2. Push the Enter button to enter the Con menu. 3. Push Next 1 time to get to “PUt” or Power Up Test Configuration. 4. -
Page 18: Select Alarm 1 Relay Runtime Setting - "A1Rr
3. Push Next 4 times to get to “A1rd” or Alarm 1 Relay Delay Setting. 4. Push Enter. The display will show the current setting. 5. Push Next to cycle through the available settings (display will begin flashing). 6. Push Enter to confirm the new setting (display will stop flashing). 7. -
Page 19: Select Alarm 2 Relay Delay Setting - "A2Rd
8. Push Next until “End” is displayed. 9. Push Enter to return to normal operation. Select Alarm 2 Relay Delay Setting – “A2rd” 4.7.10 Available options are 0 (default), 1, 3, 5, 10. To select the Alarm 2 Relay Delay Setting, in normal mode: 1. -
Page 20: Serial Configuration Settings "Dgt
This instrument contains no user serviceable parts, and substitution of components may impair product performance. 4.8 Serial Configuration Settings “dgt” Default – Factory Settings 4.8.1 The RD-VRF comes pre-programmed with the following default settings: Setting Description: Display Default: Digital Output Setting... -
Page 21: Select Digital Output Setting - "Dout
9. Push Enter to return to normal operation. Select Digital Output Setting – “dOut” 4.8.4 Available options are “bUS” (default), “BAc”. To select the Digital Output Setting, in normal mode: 1. Push the Next button to get to “dgt” or the Digital menu. 2. -
Page 22: Select Sensor Parity - "Part
The RD-VRF monitors all critical functions of the unit through software diagnostics that continuously test and verify unit operation. Internal failure of the RD-VRF will engage alarm relay 1. The status LED will flash amber. The buzzer will chirp intermittently (if the BUZZER is enabled). Failure of the VRF’s internal power supply or a lack of power to the detector will result in the status light remaining OFF (not illuminated). -
Page 23: Sensor Poisons
5.3 Sensor End-of-Life The replaceable infrared sensor (IR Sensor) of the RD-VRF has a long life. The sensor has an expected life of Ten (10) years. As time is approaching Sensor End-of-Life the unit will iniatie 3 warnings to alert EOL is approaching. After 9 REV –... -
Page 24: Maintenance
Error! Reference source not found. Error! Reference source not found.. 6. Maintenance The RD-VRF is low maintenance. The unit uses one NDIR sensors that has a 10-year life expectancy (in normal conditions). The detector’s performance should be tested regularly by using gas as detailed in the Error! Reference source not found. -
Page 25: Sensor Replacement Reset
4. Push the Next button to get to password screen flashing “0000” NOTE: If you are attempting to replace sensors before EOL warning, please contact Macurco Technical Support by calling 1-844-325-3050, and we will be happy to provide you the password and walk you through the replacement and reset. -
Page 26: Cleaning
7.1.1 Operation Test Check that the green RD-VRF status indicator LED light is illuminated continuously. If not, do not proceed with the tests. If the unit is in error mode, contact your local representative or Macurco technical service representative for information on resolving the problem. -
Page 27: Manual Operation Test
5. Press Enter. 6. The RD-VRF will step through the cycle test: bUZ (Buzzer Test), A1rt (Alarm 1 relay test) and A2rt (Alarm 2 relay test). Make sure that the settings are “On” or not disabled “diS”. Test Description Test Length... -
Page 28: Calibration And Test Kits
A Field Calibration Kit, Cal-Kit 1, and one bottle of calibration gas is needed to complete a gas test. These are available through local distribution or from Macurco. NOTE: RD-VRF must be tested or calibrated at regular intervals in accordance with local code requirements. It is recommended to test or calibrate RD-VRF at least annually. -
Page 29: Gas Testing
2. Check the pressure gauge on the regulator. If you have 25-psi or less, you will need to replace the gas canister. 3. Remove the RD-VRF cover plate 4. Assemble regulator, hose and connect the other end of the hose to the cal-adapter nozzle located at the center of the sensor. -
Page 30: Field Calibration Procedure
NOTE: For optimum calibration results the unit should be in clean air and be in a low ambient air flow Follow the procedure below for field calibration. Time Since Last Calibration RD-VRF has “CAL” top level menu that can be used to perform a field calibration. “tSC”, “0000”, “SPAn”, and “End” are sub-menus within the “CAL” menu. •... -
Page 31: Span Calibration
7. To exit the calibration menu, if the user only wants to check the zero calibration, wait 1 minute for it to time out and resume normal status. Bump/Calibration Gas Inlet Connection 7.4.2 Span Calibration 1. Assemble the appropriate gas cylinder and regulator together 2. -
Page 32: Menu Steps
13. Press Next until “End” is displayed. 14. Press Enter to return to normal mode. 15. Re-assemble the RD-VRF. You are done. 16. To exit the calibration menu press Menu/Next until ‘End’ is display and then hit Enter to return to normal mode. - Page 33 Table 7-1: Possible errors after the auto test process…………………………………………………………………………………………18 Table 7-2: Calibration keypad menu description…………………………………………………………………………………………………18 Menu 7-1: RD-VRF Communicator Flow Chart…………………………………………………………………………………………………….19 Menu 7-2: RD-VRF Communicator Flow Chart Continued……………………………………………………………………………………20 Table 7-3: RD-VRF Communicator Operating Errors…………………………………………………………………………………………….21 Table 7-4: RD-VRF Trouble Shooting Errors………………………………………………………………………………………………………….21 Table 8-1: MODBUS INPUT REGISTERS…………………………………………………………………………………………………………………22...
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Page 34: Macurco Gas Detection Product Limited Warranty
8. Macurco Gas Detection Product limited warranty Macurco warrants the RD-VRF gas detector will be free from defective materials and workmanship for a period of two (2) years from the date of manufacture (indicated on inside cover of the back of the housing), provided it is maintained and used in accordance with Macurco instructions and/or recommendations.
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