Carrier 40RUA-14 Installation, Start-Up And Service Instructions Manual
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Carrier 40RUA-14 Installation, Start-Up And Service Instructions Manual

Packaged air-handling units with puron (r-410a) refrigerant 60 hz
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CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 2
PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Moving and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Uncrating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Unit Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Unit Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Chilled Water Piping . . . . . . . . . . . . . . . . . . . . . . . . . 20
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Fan Motors and Drives . . . . . . . . . . . . . . . . . . . . . . . 21
Power Supply and Wiring . . . . . . . . . . . . . . . . . . . . . 21
Variable Frequency Drive . . . . . . . . . . . . . . . . . . . . . 26
Connecting Ductwork . . . . . . . . . . . . . . . . . . . . . . . . 29
Return-Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
40RUA and 40RUQ ONLY . . . . . . . . . . . . . . . . . . . . . 31
(40RUA and 40RUQ only) . . . . . . . . . . . . . . . . . . . 31
Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . . . 31
Indoor Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Operating Fan for Test and Balance . . . . . . . . . . . . 32
Fan Speed Set-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
(and 30 days after initial start) . . . . . . . . . . . . . . . 33
Seasonal Maintenance . . . . . . . . . . . . . . . . . . . . . . . 33
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53400086-01
Installation, Start-up and
Service Instructions
™
(SAV) . . . . . . . . 31
Printed in U.S.A.
Form No. 40RU-25-30-02SI
Packaged Air-Handling Units
with Puron
Fan Motor Lubrication . . . . . . . . . . . . . . . . . . . . . . . .34
Fan Shaft Bearings . . . . . . . . . . . . . . . . . . . . . . . . . .34
Page
Centering Fan Wheel . . . . . . . . . . . . . . . . . . . . . . . . .34
Fan Shaft Position Adjustment . . . . . . . . . . . . . . . .34
Individual Fan Wheel Adjustment . . . . . . . . . . . . . .34
Fan Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Fan Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Fan Pulley Alignment . . . . . . . . . . . . . . . . . . . . . . . .35
Pulley and Drive Adjustment . . . . . . . . . . . . . . . . . .36
Variable Frequency Drive . . . . . . . . . . . . . . . . . . . . .44
VFD REMOTE KEYPAD . . . . . . . . . . . . . . . . . . . . . . .46
ACS320 VFD Modes . . . . . . . . . . . . . . . . . . . . . . . . . .46
ACS320 VFD Diagnostics . . . . . . . . . . . . . . . . . . . . .48
Correcting Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Correcting Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Reset After Using Start-Up Assistant . . . . . . . . . . .51
ACH580 VFD Modes . . . . . . . . . . . . . . . . . . . . . . . . .52
ACH580 VFD Diagnostics . . . . . . . . . . . . . . . . . . . . .54
VFD MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . .57
Heat Sink Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . .57
Fan Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Pg 1
40RU 25-30
®
(R-410A) Refrigerant
2-24
Replaces: 40RU-25-30-01SI
60 Hz

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Summary of Contents for Carrier 40RUA-14

  • Page 1: Table Of Contents

    40RU 25-30 Packaged Air-Handling Units with Puron ® (R-410A) Refrigerant 60 Hz Installation, Start-up and Service Instructions CONTENTS Fan Motor Lubrication ......34 Fan Shaft Bearings .

  • Page 2: Safety Considerations

    • ACH580 MAIN FAN REPLACEMENT DANGER identifies the most serious hazards which will result in • ACH580 AUXILIARY COOLING FAN REPLACEMENT severe personal injury or death. WARNING signifies hazards • ACS320 FAN REPLACEMENT which could result in personal injury or death. CAUTION is used to identify unsafe practices, which may result in minor personal Bypass the VFD .

  • Page 3: Pre-Installation

    PRE-INSTALLATION INSTALLATION The power supply (v, ph, and Hz) must correspond to that General specified on unit rating plate. Allow the following clearances for service access and airflow: The electrical supply provided by the utility must be suffi- • Rear: 2-1/2 ft (762 mm) [2-1/2 ft (762 mm) with electric cient to handle load imposed by this unit.
  • Page 4 Fig. 1 — Dimensions — Size 25...
  • Page 5 Fig. 1 — Dimensions — Size 25 (cont)
  • Page 6 Fig. 2 — Dimensions — Sizes 28 and 30...
  • Page 7 Fig. 2 — Dimensions — Sizes 28 and 30 (cont)
  • Page 8 Table 1 — 40 RUA Physical Data, English — Cooling Units UNIT 40RUA* NOMINAL CAPACITY (Tons) OPERATING WEIGHT (lb) Base Unit with TXV 1050 1062 Plenum FANS Qty...Diam. (in.) 2...15 2...18 2...18 Nominal Airflow (cfm) 8,000 10,000 12,000 Airflow Range (cfm) 6,000-10,000 7,500-12,500 9,000-15,000...
  • Page 9 Table 2 — 40 RUA Physical Data, SI — Cooling Units UNIT 40RUA* NOMINAL CAPACITY (kW) OPERATING WEIGHT (kg) Base Unit with TXV Plenum FANS Qty...Diam. (mm) 2...381 2...457 2...457 Nominal Airflow (L/s) 3775 4119 5663 Airflow Range (L/s) 2831-4719 3539-5899 4247-7079 Nominal Motor kW (Standard Motor)
  • Page 10 Table 3 — 40RUQ Physical Data, English — Heat Pump Units UNIT 40RUQ* NOMINAL CAPACITY (Tons) OPERATING WEIGHT (lb) Base Unit with TXV Plenum FANS Qty...Diam. (in.) 2...15 Nominal Airflow (cfm) 8,000 Airflow Range (cfm) 6,000-10,000 Nominal Motor kW (Standard Motor) 208/230-3-60 and 460-3-60 575-3-60 Motor Speed (rpm)
  • Page 11 Table 4 — 40RUQ Physical Data, SI — Heat Pump Units UNIT 40RUQ* NOMINAL CAPACITY (kW) OPERATING WEIGHT (kg) Base Unit with TXV Plenum FANS Qty...Diam. (mm) 2...381 Nominal Airflow (L/s) 3775 Airflow Range (L/s) 2831-4719 Nominal Motor kW (Standard Motor) 208/230-3-60 and 460-3-60 3.73 575-3-60...
  • Page 12 Table 5 — 40RUS Physical Data, English — Chilled Water Unit UNIT 40RUS* NOMINAL CAPACITY (Tons) OPERATING WEIGHT (lb) Base Unit 1035 1042 Plenum FANS Qty...Diam. (in.) 2...15 2...18 2...18 Nominal Airflow (cfm) 8,000 10,000 12,000 Airflow Range (cfm) 6,000-10,000 7,500-12,500 9,000-15,000 Nominal Motor Hp (Standard Motor)
  • Page 13 Table 6 — 40RUS Physical Data, SI — Chilled Water Units UNIT 40RUS* NOMINAL CAPACITY (kW) OPERATING WEIGHT (kg) Base Unit with TXV Plenum FANS Qty...Diam. (mm) 2...381 2...457 2...457 Nominal Airflow (L/s) 3775 4719 5663 Airflow Range (L/s) 2831-4719 3539-5899 4247-7079 Nominal Motor kW (Standard Motor)

  • Page 14: Unit Positioning

    10 11 12 13 14 15 16 17 18 0 R U A A - U A 0 A Model Type Packaging 40RU = Carrier Fan Coil 0 = Standard Puron ® R-410A Refrigerant Future Use A = Standard Type of Coil...
  • Page 15 Typical positioning and alternate return air locations are shown in Fig. 6. Alternate return air locations can be used by moving the Plug unit panel from the alternate return air location to the standard re- turn air location. Refer to overhead suspension accessory drawing. (See Fig.

  • Page 16: Unit Isolation

    The 40RU direct-expansion units have internal factory- Unit Isolation installed thermostatic expansion valves (TXVs), distributors, Where extremely quiet operation is essential, install isolators and nozzles for use with R-410A. See Table 7 for part num- between floor and base of unit, or between ceiling and top sec- bers.
  • Page 17 Equalizer Line Upper Sensing Split Bulb Solenoid Valve Sight Glass Airflow 15 Diams Diams 8 Diams Equalizer Line Filter Drier Sensing Lower Bulb Split Airflow 15 Diams Diams 8 Diams Indoor Coil LEGEND TXV — Thermostatic Expansion Valve NOTE: Component location arrangement shown for field installation of sight glasses, solenoid valves, filter driers, and TXV sensing bulbs.
  • Page 18 Table 7 — Factory-Installed Nozzle and Distributor Data FEEDER TUBES PER TXV QTY...PART NO. DISTRIBUTOR QTY... UNIT COIL TYPE STD DISTRIBUTOR NOZZLE QTY...PART NO. PART NO. QTY...SIZE (IN.) 40RUA*25 4 Row 2...BBIZE-8-GA 2...D196-18-3/16 18...3/16 2...G6 40RUA*28 4 Row 2...BBIZE-15-GA 2...1126 20...3/16 2...C15 40RUA*30...
  • Page 19 Table 8 — Fitting Requirements (cont) UNIT ACCESS HOLD NO. CONNECTION TYPE CIRCUIT FITTING REQUIRED (in.) 1-3/8 Street Elbow Suction Lower 1-3/8 Nipple, 11 L 1-3/8 Long Radius Elbow 5/8 Street Elbow Liquid Lower 5/8 Nipple, 1-1/2 L 5/8 Long Radius Elbow 40RUA*28 5/8 Street Elbow Liquid...

  • Page 20: Chilled Water Piping

    40RUS unit size. To size, design, and install chilled water piping, consult the Carrier System Design manual. See Fig. 12 for an example of a typical installation. Recommended fittings are listed in Table 8.

  • Page 21: Condensate Drain

    As shipped, the unit’s condensate drain pan is NOT sloped to- Condensate Drain wards the drain connection. The pan slope must be changed to Install a trapped condensate drain line to unit connection as shown pitch towards the side of the unit with the drain connection. (See in Fig.
  • Page 22 Table 9 — Electrical Data, Alternate Motors VOLTAGE LIMITS FAN MOTOR POWER SUPPLY UNIT V-PH-Hz a, b TYPE (kW) MOCP 3.73 18.0 208/230 3.73 18.0 HIGH 5.60 23.5 3.73 40RUA/S/Q*25 3.73 HIGH 5.60 15.0 3.73 3.73 HIGH 5.60 10.0 5.60 23.5 208/230 10.0...
  • Page 23 Install disconnect switch and power wiring in accordance with all Connection Board [TSTAT CB]) and outputs these commands to applicable local codes. See Fig. 15-17 and the unit label diagram. the condensing unit (through the Indoor Connection Board Connect power wiring with 1/4 in. ring terminal. [IDCB]).

  • Page 24: Three Stage Operation

    THREE STAGE OPERATION Move orange wire from Indoor Connection Board terminal Y2 to terminal X. All units are factory shipped for 2-stage cooling operation. To con- vert a unit to 3-stage operation, see Fig. 18 adjust the following The 3-stage system will run the fan at low speed with a G, Y1, and wires between the control board and two terminal strips on the Y1+Y2 call, and at high speed with a call for Y1, Y2, and Y3.
  • Page 25 Fig. 19 — Unit Wiring...

  • Page 26: Variable Frequency Drive

    Variable Frequency Drive The unit is equipped with a Variable Frequency Drive (VFD) to control the indoor fan in sequence with the unit’s ventilation, cool- ing, and heating operation. The VFD is controlled through a 0- 10vdc signal that is provided by the Unit Control Board (UCB) in the control box.
  • Page 27 Variable Frequency Drive (VFD) Fig. 22 — ACS320 VFD Location for the following units: 40RUA/RUS 25, 40RUQ 25 (208/230V and 460V only) Variable Frequency Drive (VFD) Fig. 23 — ACS320 VFD Location for the following units: 40RUA/RUS 28-30 (208/230V and 460V only)
  • Page 28 Variable Frequency Drive (VFD) Fig. 24 — ACH580 VFD Location for the following units: 40RUA/RUS 25, 40RUQ 25 (575V only)

  • Page 29: Connecting Ductwork

    Fig. 25 — ACH580 VFD Location for the following units: 40RUA/RUS 28-30 (575V only) RETURN CONNECTIONS Connecting Ductwork Refer to the Carrier System Design Manual for the recommended When using return-air ductwork, route return-air duct to the unit’s design and layout of ductwork. Figure 26 shows recommended return air inlet near the filter rack, using a canvas connection to duct connection to units with 2 fans.
  • Page 30 Fig. 26 — Typical Fan Discharge Connections for Multiple Fan Units Duct Flanges Fig. 27 — Duct Flange Installation...

  • Page 31: Start-Up

    Continue adjustment until superheat reaches 10°F to 15°F START-UP (5.5°C to 8.3°C). Before starting unit, check the following and correct as necessary: Replace the seal cap; tighten. • Is unit solidly supported? • Is fan adjusted for speed and pulley alignment? INSTALLER / INSTALLATEUR •...

  • Page 32: Operating Fan For Test And Balance

    Reset thermostat cooling set point to a position above the space UNITS WITH ELECTRO-MECHANICAL CONTROLS temperature. The fan speed set up controls are located on the lower section of Both compressors will shut off. Indoor fan motor will stop the Unit Control Board (UCB). (See Fig. 30.) immediately.

  • Page 33: Maintenance

    NOTE(S): AIR CONDITIONING a. The above list may not include all maintenance items. Inspection intervals may vary depending on climate and opening hours. Consult your Carrier dealer • Condenser fan motor mounting bolts tightness about a service contact for seasonal inspections b.

  • Page 34: Service

    SERVICE Inspection and maintenance should be performed at regular inter- vals and should include the following: • Complete cleaning of cabinet, fan wheel, cooling coil, con- Locking Wheel densate pan and drain, heating coils, and return-air grille Bolt (if present). Bearing •...

  • Page 35: Fan Rotation

    Pulley(s) Belts Motor Pulley(s) Slot Mounting Bolts Fig. 33 — Fan Motor Mounting Fan Rotation Correct fan rotation with respect to fan outlet is shown in Fig. 34. Adjustable Flanges Setscrews Straight Edge Must Be Parallel With Belt Housing Discharge Pulleys Setscrews Cutoff...

  • Page 36: Pulley And Drive Adjustment

    Pulley and Drive Adjustment Table 16 — Fan Motor Data, Standard Motor — SI To obtain desired fan speed, refer to the fan motor tables (see Ta- bles 14-17), drive data tables (see Tables 18-23 on pages 37 to 39), 40RUA*25 40RUA*28 40RUA*30...
  • Page 37 Table 18 — Standard Drive Data, 60 Hz — English 40RUA*25 40RUA*28 40RUA*30 UNIT 40RUQ*25 40RUS*28 40RUS*30 40RUS*25 Motor Drive Motor Pulley Pitch Diameter (in.) 3.7-4.7 4.3-5.3 4.3-5.3 Pulley Factory Setting Full Turns Open Fan Drive Pulley Pitch Dia (in.) 11.0 11.0 Pulley Bore (in.)
  • Page 38 Table 20 — High-Static Drive Data, 60 Hz — English 40RUA*25 40RUA*28 40RUA*30 UNIT 40RUQ*25 40RUS*28 40RUS*30 40RUS*25 Motor Drive Motor Pulley Pitch Diameter (in.) 4.3-5.3 4.3-5.3 4.3-5.3 Pulley Factory Setting Full Turns Open Fan Drive Pulley Pitch Dia (in.) Pulley Bore (in.) 1-1/16 1-15/16...
  • Page 39 Table 22 — Medium-Static Drive Data, 60 Hz — SI 40RUA*25 40RUA*28 40RUA*30 UNIT 40RUQ*25 40RUS*28 40RUS*30 40RUS*25 Motor Drive Motor Pulley Pitch Diameter (mm) 109.2-134.6 109.2-134.6 109.2-134.6 Pulley Factory Setting Full Turns Open Fan Drive Pulley Pitch Dia (mm) Pulley Bore (mm) 36.5 49.2...
  • Page 40 Table 24 — 40RU Standard Fan Performance Data — 0.0-2.4 in. wg External Static Pressure — English EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW UNIT (cfm) 6,000 1.25 1.39 1.69 2.06 2.48 2.93 3.60 7,000 1.93 2.09 2.42 2.08 3.23 3.71 4.23 40RUA*25 40RUQ*25...
  • Page 41 Table 26 — 40RU Standard Fan Performance Data — 0-600 kPa External Static Pressure — SI EXTERNAL STATIC PRESSURE (kPa) AIRFLOW UNIT (L/s) 2830 8.86 0.94 9.48 1.04 10.65 1.26 11.84 1.53 13.01 1.85 14.10 2.19 15.08 2.53 3300 10.14 1.44 10.69 1.56 11.70...
  • Page 42 Table 28 — 40RU High-Capacity Fan Performance Data — 0.0-2.4 in. wg External Static Pressure — English EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW UNIT (cfm) 6,000 1.29 1042 1.72 2.09 2.51 2.95 3.40 40RUA*25 7,000 1.99 2.15 2.48 2.85 3.28 3.76 4.27 40RUQ*25...
  • Page 43 Table 30 — 40RU High-Capacity Fan Performance Data — 0-600 kPa External Static Pressure — SI EXTERNAL STATIC PRESSURE (kPa) AIRFLOW UNIT (L/s) 2830 9.03 0.96 9.62 1.06 10.77 1.29 11.94 1.56 13.08 1087 14.15 2.20 15.12 2.54 3330 10.34 1.48 10.86 1.60...

  • Page 44: Variable Frequency Drive

    Variable Frequency Drive Table 33 — ACH580 The VFD switches the indoor fan motor speed between full/high VFD Terminal Designations speed (60 Hz motor operation) and reduced/low speed (40 Hz mo- tor operation), as required by ASHRAE 90.1-2016 and IECC- TERMINAL FUNCTION 2015 requirements for two-stage HVAC units.

  • Page 45: Alarms

    If diagnostics troubleshooting has determined that the drive is SELECT), digital input or serial communication could also be defective during the warranty period, contact Carrier. used to reset the drive. When the fault has been corrected, the mo- tor can be started.

  • Page 46: Vfd Remote Keypad

    CONFIGURATION OVERRIDE HAZARD drive is in remote control mode, such as the basic I/O or field bus. Do not use ABB or Carrier start-up assistant on this VFD The arrow icon indicates the drive and motor rotation status. A application. Use of start-up assistant will override the factory rotating arrow (clockwise or counterclockwise) indicates that VFD configurations.

  • Page 47: Parameters Mode

    To stop the process, select ABORT DOWN keys simultaneously. To restore the default factory set- (SOFT KEY 1). tings, select the Carrier application macro. When the download is complete, the text “Parameter CHANGED PARAMETERS MODE download successful” will be displayed.

  • Page 48: Clock Set Mode

    The text “Downloading Parameters (partial)” will be dis- ACS320 VFD Diagnostics played with a progress indicator. To stop the process, The drive detects error situations and reports them using: select ABORT (SOFT KEY 1). • Green and red LEDs on the body of the drive (located un- When the download is complete, the text “Parameter der the keypad) download successful”...

  • Page 49: Correcting Alarms

    (action is not always required). Use Table 35 to find and address the root cause of the problem. If diagnostics troubleshooting has determined that the drive is de- fective during the warranty period, contact Carrier. Table 35 — ACS320 Alarm Codes ALARM...
  • Page 50 3015 UNDERLOAD CURVE. THERM FAIL Internal fault. The thermistor measuring the internal temperature of the drive is open or shorted. Contact Carrier. OPEX LINK Internal fault. A communication-related problem has been detected between the OMIO and OINT boards. Contact Carrier.

  • Page 51: Reset After Using Start-Up Assistant

    CONFIGURATION OVERRIDE HAZARD The function of Right Softkey matches the word in the lower Do not use ABB or Carrier start-up assistant on this VFD right-hand box on the display screen. If the box is empty, then the application. Use of start-up assistant will override the factory Softkey does not have a function on that specific screen.

  • Page 52: First Start Assistant

    ENTER (Press CONFIGURATION OVERRIDE HAZARD Use the UP or DOWN keys to highlight the desired Do not use ABB or Carrier start-up assistant on this VFD parameter group and press SEL (Press application. Use of start-up assistant will override the factory Use the UP or DOWN keys to highlight the desired VFD configurations.

  • Page 53: Parameters Mode

    The first time the drive is powered up, it is in the OFF mode. To PARAMETERS MODE switch to local hand-held control and control the drive using the The Parameters mode is used to change the parameters on the control panel, press and hold the HAND button. Pressing the drive.

  • Page 54: Clock Set Mode

    Upload All Parameters Use the UP or DOWN keys to highlight SET TIME and press SEL (Press ). Use the UP or DOWN keys to change the To upload and store parameters in the control panel from the VFD hours and minutes. Press OK (Press ) to save the config- insert the Keypad into the VFD slot (Fig.

  • Page 55: Alarms (Green Led Flashing)

    Hardware manual of the drive. If an earth fault is found, fix or change the motor cable and/or motor. If no earth fault can be detected, contact your local Carrier representative. Check motor and motor cable for cabling errors.
  • Page 56 Table 37 — Fault and Alarm Codes for ACH580 VFD (cont) CODE (HEX) WARNING / AUX. CODE CAUSE WHAT TO DO Check status of fieldbus communication. See user FBA A communication Cyclical communication between documentation of fieldbus interface. Programmable warning: drive and fieldbus adapter module A Check settings of parameter groups 50 Fieldbus adapter (FBA), A7C1...

  • Page 57: Vfd Maintenance

    See actions for each code below. VFD MAINTENANCE If installed in an appropriate environment, the VFD requires very little maintenance. Table 38 lists the routine maintenance intervals recommended by Carrier. Table 38 — Maintenance Intervals MAINTENANCE INTERVAL Every 6 to 12 months Heat sink temperature check ...

  • Page 58: Fan Replacement

    (see Fig. 52). process, fan replacement is recommended once these symptoms Unplug the fan power supply wires from the drive (see start appearing. Replacement fans are available from Carrier. Fig. 52). ACH580 MAIN FAN REPLACEMENT Pull off the fan.
  • Page 59 ACS320 FAN REPLACEMENT To replace the fan perform the following: Remove power from drive. Wait for 5 minutes and then make sure by measuring that there is no voltage Insert a small straight blade screwdriver into the slot and press in to release the top cover as shown in Fig. 47 on page 58.
  • Page 60 Bypass the VFD Chilled Water Coil Freeze Protection Shut off water supply to unit. Remove side panel of unit and remove vent and drain plugs in top and bottom of coil header. WARNING Drain coil and blow out remaining water. Reinstall plugs and side panel.
  • Page 61 Replacing Filters Filters can be removed and installed from either side of the unit. Install new filters in units that have one fan as follows: Remove the side access panel (retain screws). Remove the filter retainer clip (see Fig. 56). Remove old filters by lifting and tilting them out of the filter track.
  • Page 62 APPENDIX A — VFD PARAMETERS Table A — ACS320 Common Parameters Table B — ACH580 VFD Common Parameters PARAMETERS DESCRIPTION SETTING ACS320 PARAMETERS DESCRIPTION SETTING ACH580 1001 EXT1 Commands 10.30 Relay out 3 (15) FAULT (–1) 1102 EXT1/EXT2 Sel EXT1 12.17 Minimum AI1 0.2V...
  • Page 63 APPENDIX A — VFD PARAMETERS (cont) Table C — ACS320 VFD Parameters, for 40RU Units with Electromechanical Controls VFD PARAMETERS PKG ABB ACS320 MOTOR PART NUMBER VFD PART NUMBER DRIVE HP DESC 40RU000130-DATA 40RU000130 HD56FR233 HK30WA523 40RU 1.7 HP 230V 40RU000131-DATA 40RU000131 HD56FR463...
  • Page 64 APPENDIX A — VFD PARAMETERS (cont) Table E — ACS320 VFD Parameters — 40RU (208/230V and 460V units only) MOTOR CONST CONST CONST CONST REPLACEMENT MOTOR VFD PART VOLTS SPEED SPEED SPEED SPEED COMPONENT DESCRIPTION PART AMPS NUMBER (9905) FREQ PART NUMBER NUMBER (9906)
  • Page 66 © 2024 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53400086-01 Printed in U.S.A. Form No. 40RU-25-30-02SI Pg 66 2-24 Replaces: 40RU-25-30-01SI...
  • Page 67 START-UP CHECKLIST Split Systems with 40RU Units (Remove and use for job file) NOTE: To avoid injury to personnel and damage to equipment or property when completing the procedures listed in this start-up checklist, use good judgment, follow safe practices, and adhere to the safety considerations/information as outlined in preceding sections of this Installation, Start-Up, and Service document.
  • Page 68 (Y/N)___________ NOTES: ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ © 2024 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53400086-01 Printed in U.S.A. Form No. 40RU-25-30-02SI Pg CL-2...

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