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Flo Multi-Path Technical Manual

Start-up air cooled condenser (6-70 ton)
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Technical Manual
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Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual
Title
Flō Energy Solutions, Inc.
Multi-Path
STARTUP AIR COOLED CONDENSER (6-70 TON) REFERENCE MANUAL
This document will assist the start-up technician with the Flō Air Cooled Condenser (6-70 Ton)
Start-Up and completion of the Start-Up Air Cooled Condenser (6-70 Ton) Audit Form (SU-FOR-
02). Completing the start-up per the detailed instructions in this manual and associated form will
ensure a defect-free, optimally performing unit is delivered to the customer.
NOTE: Each numeric section (i.e., 16. DIGITAL PHASE MONITOR) in this manual directly
corresponds to the same numeric section on the Flō SU-FOR-02 Start-Up Air Cooled Condenser
(6-70 Ton) Audit Form. Any numeric sub-sections (i.e., 5.3 SUPPLY FAN WIRE CONNECTIONS) in
this manual are additional instructions to assist in guiding the technician through that section of
the SU-FOR-02.
SU-GEN-04

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  • Page 1 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title Flō Energy Solutions, Inc. Multi-Path STARTUP AIR COOLED CONDENSER (6-70 TON) REFERENCE MANUAL This document will assist the start-up technician with the Flō Air Cooled Condenser (6-70 Ton) Start-Up and completion of the Start-Up Air Cooled Condenser (6-70 Ton) Audit Form (SU-FOR- 02).

  • Page 2: Table Of Contents

    Technical Manual SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title 4.8.1. HEAT RECLAIM PIPING ......13 CONTENTS 4.8.2. HEAT RECLAIM PIPE CHASE ....13 TOOLS AND MATERIALS ........4 4.9. HEAT RECLAIM/REHEAT TEMP SENSOR . 13 1. EXTERIOR UNIT PREPARATION ....5 4.10.
  • Page 3 Technical Guide SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title 10.3. SMOKE DETECTOR ......18 14.5.4. MONITORING SENSORS ....22 10.4. CONTROLLER WIRES ......18 14.5.5. COMPRESSOR TRANDUCERS ..22 11. ALL CABINETS PREP ........18 14.6. LOW PRESSURE SWITCHES ....22 11.1.

  • Page 4: Tools And Materials

    Technical Guide SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title TOOLS AND MATERIALS The tool lists are included here for your convenience, The tools and materials listed below will assist in the include any additional items required by you to perform a completion of the MPU start-up.

  • Page 5: Exterior Unit Preparation

    2. Obtain the unit serial number from the unit name plate. 3. Document the concern in the notes section 22 of SU- Flō Large Multi-Path Unit (26 and 31-70 Tons) FOR-02. 4. Take two digital images of the damage and email the images techsupport@systemsflo.com...

  • Page 6: Unit Defects

    Technical Guide SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title 1.1.2. UNIT DEFECTS 1.3. LEVELING THE UNIT If there is a superficial, surface, cosmetic flaw or defect During manufacturing, the stainless-steel drain pan is with the unit or accessories that will not prevent the unit pitched toward the p-trap.

  • Page 7: Outsdie Hood Assemble Steps

    Technical Guide SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title 1.4.1. OUTSDIE HOOD ASSEMBLE STEPS Use caution: Roof damage can result from the sharp edges of the side pieces, if dropped. 1. Remove the two screws at the bottom of the hood that secure it in the shipping position.

  • Page 8: Birdscreen

    Technical Guide SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title 1.5. BIRDSCREEN Once the Outdoor air hood has been installed, check to ensure the bird screen has been properly installed with no large gaps around edges, and that there are no obstructions between the bird screen and the outdoor air damper Relief Damper - Shipping Screw...

  • Page 9: P-Trap Installtion

    Technical Guide SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title with the opening pointing downward, so that the condensation will flow out. 3. Using the proper cement, glue the p-trap’s longest side directly to the elbow’s opening. Positioning of this pipe, perpendicular, parallel or otherwise to the installed unit, should be determined by the customer.

  • Page 10: Weather Proofing

    3. Inspect the hinges on each door to ensure they are secure, no stripped mounting screws, or that the hinges are separating from the cabinet. 2. DAMPER ASSEMBLY PREP The Multi-Path damper assembly has three sections. EXTERNAL 1-16MAR2023...

  • Page 11: Fail Safe Damper Positions

    Technical Guide SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title 3. FILTER PREP 3.1. FILTER INSTALLATION Ensure all filters are installed correctly, with the airflow direction arrow pointing towards the coil cabinet. 3.2. FILTER RACK Ensure all filters can move freely in the filter rack and be removed easily without damage.

  • Page 12: E-Fin Coating

    Technical Guide SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title 4.5. TXV CAPILLARY TUBE FOR SENSING BULB 1. Gently remove the shipping cable ties from the TXVs capillary tubes. 2. Spread the capillary tubes apart. 3. Silicone the capillary tubes so they do not rub together.

  • Page 13: Heat Reclaim (If Applicable)

    Technical Guide SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title Clean, Sealed Pipe Chase Supply Fan Mesh 4.9. HEAT RECLAIM/REHEAT TEMP SENSOR 4.8. HEAT RECLAIM (IF APPLICABLE) Verify temp sensor has been mounted to the heat reclaim If the unit is not equipped with a heat reclaim, proceed to input pipe and is insulated.

  • Page 14: Plastic Edge Guard

    Technical Guide SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title 4.10. PLASTIC EDGE GUARD Ensure plastic edge guard has been installed on drain pan edge to protect cooper feeder tubes. Drain Pan Float Switch 5. SUPPLY CABINET PREP Plastic Edge Guard 5.1.

  • Page 15: Supply Fan Wire Connections

    Technical Guide SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title Supply Fan Inlet Cone Tolerances High/Auxiliary Limit Switch 5.5. SUPPLY FAN MOVEMENT Spin the supply fan wheel manually to check the Check all wiring in the supply fan cabinet, including the alignment of the wheel.

  • Page 16: Check Heat Exchangers/Heat Strips

    Technical Guide SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title 7. CONDENSER PREP 5.9. CHECK HEAT EXCHANGERS/HEAT STRIPS Ensure the condenser fan blades are positioned correctly, Verify that heat exchangers on NG/Propane units or the around 1/8” above the lip of the condenser fan shroud, heating elements on electric heat units are free of debris, that the blades spin freely, not contacting any wiring, checking directly under and behind the supply motor...

  • Page 17: Check All Wire Connections

    Technical Guide SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title 8.1. CHECK ALL WIRE CONNECTIONS Loose electrical connections create a risk of failure. Tighten any loose connections, verify no bare wires are visible and all connections are secure. Ensure all wiring, wiring harnesses, fuses, transformers, terminal blocks, contactors, etc., are secure and without damage.

  • Page 18: Static Gas Pressure

    SMOKE DETECTOR Check to see if the smoke detector has been wired to the 12. ELECTRICAL POWERED terminal block. If the smoke detector is not wired, the FLo 12.1. SUPPLY LINE VOLTAGE start-up tech must not terminate the wires to the terminal block.

  • Page 19: Analog Phase Monitor

    If voltage is more than 15% over/under, right and left arrow buttons while the up and down arrow please call into Flo technical support. buttons allow changes within each menu. 12.2.2.2. DPM SETTINGS The Flō...

  • Page 20: Supply Fan Powered

    Technical Guide SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title can take the amperage directly from the gray wires 13.5. SUPPLY FAN ACCESS coming out of the crankcase heaters OR from the bottom Replace access panel to supply fan motor. Ensure bolts are side of the compressor contactor auxiliary contact using not stripped out.

  • Page 21: Return Air Temp Validation

    Technical Guide SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title 14.4. RETURN AIR TEMP VALIDATION Using a cold spray or rub test, observe a change on the displayed value of Return Air Temp Sensor. 14.5. SENSOR LOCATIONS/READINGS 14.5.1. SPACE TEMP/HUMIDITY SENSOR Sensors are at the heart of the MPU system.

  • Page 22: Supply Air Sensor

    Technical Guide SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title sensor and each Space Humidity Sensor right beside the 15. ALL CABINETS POWERED sensor. 15.1. REMOVE ALL TRASH Remove any trash found inside all cabinets including In the third column, record offset applied if needed. under the supply motor assembly, in and behind the unit drain pans.

  • Page 23: Confirm Bad Operation

    Technical Guide SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title 17.5. CONFIRM BAD OPERATION 2. Ensure that all stages of heat are ‘OFF’. Override the BAD damper to 100%. Verify the damper fully opens. 3. Remove the hex plug from the Flō unit’s gas manifold and connect the manometer to the gas port.

  • Page 24: Electric Heating

    Technical Guide SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title 10. Document readings taken for each manifold in low 18.2.1. ELECTRIC HEAT VERIFICATION and high fire on SU-FOR-02. 1. Go to “Heating Test Modes” and turn on “Full Capacity 11.

  • Page 25: Sub-Cooling & Superheat Conditions

    During start-up of each unit, the technician is required to temperature-pressure chart. perform static refrigerant pressure, sub-cooling and superheat measurements. Multi-Path refrigeration circuits are charged with R410A refrigerant and factory tested. Verify sub-cooling and superheat during the startup of each Flō unit. Adjust only if necessary. Perform the verification under full load, or as close to full load condition as possible.

  • Page 26: Adjusting Sub-Cooling And Superheat

    Technical Guide SU-GEN-04 Start-Up Air Cooled Condenser (6-70 Ton) Reference Manual Title Convert pressure obtained saturated Correct an overcharged system by reducing the amount of temperature using appropriate refrigerant refrigerant in the system to lower the sub-cooling. temperature-pressure chart (Table 7). B) Adjusting An Undercharged System Subtract the saturated temperature from the measured suction line temperature to determine the evaporator...

  • Page 27: Wrap Up And Unit Images

    6. Perform one final check of the unit to remove any Once complete, call into the FLo startup checkout trash or tools otherwise left behind. appointment line at 888-598-1198 and select option 2.

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