Summary of Contents for KRUEGER CRFF-E
- Page 1 INSTALLATION, OPERATION & MAINTENANCE Fan Filter Units CRFF-E, CRFF-E-ARS, & CRFF-E-ARSM ECM Motors Revision: 02.01.17...
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Page 2: Table Of Contents
Technical Note: TN1002 Design with VAV Boxes....................18 Unit Wiring Diagrams..............................20 Unit Replacement Parts List............................23 Drawing - CRFF-E Filter..............................24 Drawing - CRFF-E-ARS & CRFF-E-ARSM Filter......................25 Testing..................................26 Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com... -
Page 3: Critical Operations Of The Fan Filter Unit
3. For reorder purposes the CRFF-E, CRFF-E-ARS and CRFF-E-ARSM model number, configuration code and serial number should be recorded. This information is located on the product and serial number labels, located adjacent to the electrical box. If you cannot locate the FO# please contact Krueger for this information. Read and Save These Instructions To reduce the riskkof fire, electrical shock, or injury to persons, observe the following 1. -
Page 4: Installation
Page: 4 of 26 Installation The CRFF-E Series Critical Room Fan Filter Units are completely assembled at the factory with the exception of the optional ¼” (0.64 cm)-20 eyebolts, which can be used when hanging the unit from an overhead structure. -
Page 5: Unit Control Box
ON/OFF Switch - Speed/Airflow Adjustment All CRFF-E series units are equipped with a two-position rocker switch (ON/OFF), which is located on the side of the electrical box, on top of the unit. Unless otherwise specified, units are furnished with a Universal Control Card to enable adjustment of airflow or set to preferred communication mode. -
Page 6: Universal Control Card Set Up
ANALOG INPUT “COM” GREEN LED FOR SYSTEM/RPM STATUS ANALOG INPUT “SIGNAL” RPM TEST PROBE JACK “SIGNAL” RPM TEST PROBE JACK “COM” MANUAL SPEED POT Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com... - Page 7 Note: Network mode can be configured using either DIP switch setting shown above. DIP switch pictorials are for reference and may be labeled differently by the manufacturer. Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com...
- Page 8 Installation, Operation, & Maintenance for CRFF-E Series Page: 8 of 26 Control Modes (continued) Example of binary S2 switch settings Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com...
- Page 9 RED NETWORK LED GREEN STATUS LED RJ45 Network Cable Connections RS-485 Bus Power Bus Power 0V (GND) 0V (GND) Pass Through Pass Through Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com...
- Page 10 Note: Register 24 may be read in network mode to determine the value of 0-10VDC signal that may be connected. For example, a pressure transducer may be conected to indicate unit static pressure Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com...
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Page 11: Troubleshooting
3. Check air velocity and if low, conduct the “Low Air Velocity” procedure outlined above. 4. Conduct smoke and photometer test on HEPA filte . Seal or replace HEPA filter as necessar . Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com... -
Page 12: Infrared Speed Controller
• A flow index of 04 flashes an extra long, then 4 shor • A flow index of 100 flashes 10 longs, then an extra lon Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com... -
Page 13: Pre-Filter Cleaning (Foam)
5. Reassemble by reversing the above steps. Note: To keep the filter in top operating condition, washing the foam prefilter is recommended every three to six months. Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com... -
Page 14: Service: Removal And Replacement Of Crff-E Filters
6. Restore power and verify proper operation of CRFF-E. On/Off Switch Lid Assembly Electrical Knock-Out #8 Screws (10x) Ø5/32 Rivet Filter Deflector (6x) HEPA/ULPA filter Figure 1: Standard Filter Change Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com... -
Page 15: Service: Removal And Replacement Of Roomside Replaceable Filters
Diffuser Screen Screws (typ 6) ¼ -20 Screw Filter Clip 10-32 Diffuser Screen Screws CRFF-E-ARS & CRFF-E-ARSM Filter Change RSR/E Sheet Metal Filter Replacement Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com... -
Page 16: Service: Crff-E & Crff-E-Ars Motor Removal And Installation
This will give a 0.11” overlap between the venturi ring and the blower. PREFILTER MOTOR FIGURE 4: MOTOR REPLACEMENT VENTURI RING BLOWER WHEEL ON/OFF SWITCH Power Entrance Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com... -
Page 17: Service: Crff-E-Arsm Motor Removal And Installation
THE INNER SCREW PREFILTER WALL AND WASHER GROMMET PLENUM MOTOR / BLOWER MOTOR ASSEMBLY WELLNUT BAFFLE ASSEMBLY VENTURI RING GEL SEAL FILTER SCREEN BLOWER WHEEL Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com... -
Page 18: Technical Note: Tn1004 Changing Motors In The Field
The rest of the fit and function will be a direct replacement. Follow the procedure in the IOM for motor swap for your particular FFU. Old Cable Style Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com... - Page 19 ECM motors are self-testing and sized for the motor being used inside the unit they can’t compete with the airflows from a duct blower motor. Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com...
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Page 20: Unit Wiring Diagrams
Page: 20 of 26 Wiring Diagrams 4 Pin MTA Motor Connector Remote Run Indicator LED 4 pin Control Cable 5 pin Power Cable Universal Card Wiring Diagram Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com... - Page 21 Note: Register 24 may be read in network mode to determine the value of 0-10VDC signal from the pressure transducer connected to indicate unit interal static pressure. Universal Card Wiring Diagram w/ Continous Filter Monitoring Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com...
- Page 22 Installation, Operation, & Maintenance for CRFF-E Series Page: 22 of 26 Wiring Diagrams (continued) Infrared Speed Control Remote Mounted Visual Control Unit Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com...
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Page 23: Unit Replacement Parts List
ECM Motor Assembly (CRFF-E-ARSM) S266587-015 2x2 - 277V S266587-016 4x2 - 120V S266587-011 4x2 - 208V-240V ECM Motor Assembly (CRFF-E-ARSM) S266587-011 4x2 - 277V S266587-012 Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com... -
Page 24: Drawing - Crff-E Filter
Installation, Operation, & Maintenance for CRFF-E Series Page: 24 of 26 CRFF-E Filter Drawing Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com... -
Page 25: Drawing - Crff-E-Ars & Crff-E-Arsm Filter
Installation, Operation, & Maintenance for CRFF-E Series Page: 25 of 26 CRFF-E-ARS and CRFF-E-ARSM Filter Drawing Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com... -
Page 26: Testing
CRFF-E series filters, unless requested FIGURE 17: RECOMMENDED TESTING – 8 POSITION READINGS WITH A VELGRID FIGURE 18: FACTORY APPROVED TESTING – 3 READINGS WITH A VELGRID Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com...
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