Page 1: Table Of Contents
FAS/FHS240-336 Packaged Air-Handling Units with R-410A Refrigerant 60 Hz Installation, Start-up and Service Instructions CONTENTS Individual Fan Wheel Adjustment ..30 Fan Belts ......30 Page Fan Rotation .
Page 2: Pre-Installation
It is important to recognize safety information. This is the PRE-INSTALLATION safety-alert symbol . When you see this symbol on the 1. The power supply (v, ph, and Hz) must correspond to unit and in instructions or manuals, be alert to the potential that specified on unit rating plate.
Page 3 Fig. 1 — Dimensions — Size 240...
Page 4 Fig. 1 —Dimensions — Size 240 (cont)
Page 5 Fig. 2 — Dimensions — Sizes 300 and 336...
Page 6 Fig. 2 —Dimensions — Sizes 300 and 336 (cont)
Page 7 Table 1 — FAS Physical Data, English — Cooling Units UNIT FAS 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 8 Table 2 — FAS Physical Data, SI — Cooling Units UNIT FAS 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) 208/230-3-60 and 460-3-60...
Page 9 Table 3 — FHS Physical Data, English — Heat Pump Units UNIT FHS 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 10 Table 4 — FHS Physical Data, SI — Heat Pump Units UNIT FHS 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 11 MODEL SERIES Position Number F = R-410A Fan Coil Unit A = Air Conditioning (Cooling Only) H = Heat Pump Type S = Standard Efficiency Efficiency 240 = 20 Tons (2 circuit) 300 = 25 Tons (2 circuit) 336 = 30 Tons (2 circuit) Nominal Tonnage H = 208/230-3-60 L = 460-3-60...
Page 12: Unit Positioning
Unit Positioning Typical positioning and alternate return air locations are shown in Fig. 5. Alternate return air locations can be used The unit can be mounted on the floor for vertical application by moving the unit panel from the alternate return air loca- with return air entering the face of the unit and supply air tion to the standard return air location.
Page 13 OVERHEAD SUSPENSION ACCESSORY — UNIT SIZE 240 OVERHEAD SUSPENSION ACCESSORY — UNIT SIZES 300 AND 336 NOTE: Dimensions in [ ] are millimeters Fig. 6 — Preferred Suspension Technique FAS-FHS-240-336-02SI Specifications subject to change without notice.
Page 14: Unit Isolation
The standard knockouts provide sufficient access to the unit’s coils for all FAS240-336 units. FHS240 units require additional holes IMPORTANT: Never attach the sensor to the suction man- which must be field-fabricated to accommodate the piping.
Page 15 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 16 Table 5 — 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.) 2…1183553 2…1175454 2...1179769 FAS240 4 Row 18...3/16 2...BBIZE-8-GA 2...D196-18-3/16 2...G6 2…1183751 2…1173485 2…1179803 FAS300 4 Row 20...3/16 2...BBIZE-15-GA...
Page 17: Condensate Drain
Hopper Condensate Condensate 2 — Matched fan belts Conn Conn (FAS240-336, FHS240 units) For instructions on changing fan rotation, changing drive speeds and adjusting drives, see Pulley and Drive Adjust- ment in the Service section. 3" Min. 3" Min. [76]...
Page 18 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 FAS240 3.73 FHS240 HIGH 5.60 15.0 3.73 3.73 HIGH 5.60 10.0 5.60 23.5 208/230 10.0 7.46 32.0 HIGH 10.0...
Page 19: Three Stage Operation
Install disconnect switch and power wiring in accordance with following wires between the control board and two terminal all applicable local codes. See Fig. 13-15 and the unit label strips on the side of the control box: diagram. Connect power wiring with 1/4 in. ring terminal. 1.
Page 20 NOTE: On select units, the black and blue IFM wires are reversed. Fig. 16 — Unit Wiring FAS-FHS-240-336-02SI Specifications subject to change without notice.
Page 21: Variable Frequency Drive
IDCB This wire is included in factory harness TSTAT TSTAT CB COMP Disconnect this wire from TSTAT CB-X and insulate. Fig. 17 — 3-Stage Cooling Diagram Variable Frequency Drive The unit is equipped with a Variable Frequency Drive (VFD) to control the indoor fan in sequence with the unit's ventila- tion, cooling, and heating operation.
Page 22 Fig. 19 — ACH550 Variable Frequency Drive (VFD) Variable Frequency Drive (VFD) Fig. 20 — ACS320 VFD Location for the following units: FAS240, FHS240 (208/230V and 460V only) FAS-FHS-240-336-02SI Specifications subject to change without notice.
Page 23 Variable Frequency Drive (VFD) Fig. 21 — ACS320 VFD Location for the following units: FAS300-336 (208/230V and 460V only) FAS-FHS-240-336-02SI Specifications subject to change without notice.
Page 24 Variable Frequency Drive (VFD) Fig. 22 — ACH550 VFD Location for the following units: FAS240, FHS240 (575V only) FAS-FHS-240-336-02SI Specifications subject to change without notice.
Page 25: Connecting Ductwork
Variable Frequency Drive (VFD) Fig. 23 — ACH550 VFD Location for the following units: FAS300-336 (575V only) Connecting Ductwork RETURN CONNECTIONS Figure 24 shows recommended duct connection to units When using return-air ductwork, route return-air duct to the with 2 fans. unit’s return air inlet near the filter rack, using a canvas con- nection to prevent transmission of unit vibration.
Page 26 Fig. 24 — Typical Fan Discharge Connections for Multiple Fan Units Duct Flanges Fig. 25 — Duct Flange Installation FAS-FHS-240-336-02SI Specifications subject to change without notice.
Page 27: Start-Up
START-UP 3. Wait until suction pressure and superheat stabilize. This may take more than 30 minutes. Before starting unit, check the following and correct as 4. Continue adjustment until superheat reaches 10°F to necessary: 15°F (5.5°C to 8.3°C). • Is unit solidly supported? 5.
Page 28: Operating Fan For Test And Balance
Replace the supply fan access panel. Restore unit power. Table 8 — FAS/FHS Min Cfm Per Fan Motor Type 2-SPEED FAN 2-SPEED FAN UNIT MOTOR (AT HIGH MOTOR (AT LOW SPEED) SPEED) FAS240 7,500 5,000 FHS240 FAS300 8,450 5,633 FAS336 10,140 6,760...
Page 29: Maintenance
MAINTENANCE Table 9 — Outdoor Unit Maintenance Checklist These items should be part of a routine maintenance pro- RECOMMENDED MAINTENANCE CHECKLIST gram, to be checked every month or two, until a specific INTERVAL schedule for each can be identified for this installation: Outdoor unit specific: Monthly Annual...
Page 30: Service
SERVICE Centering Fan Wheel If fan and fan shaft assembly are not properly centered, Inspection and maintenance should be performed at regular blades may scrape against the blower side scroll plate or intervals and should include the following: may create an objectionable whistling noise. It may be nec- •...
Page 31: Fan Rotation
Pulley(s) Belts Motor Pulley(s) Slot Mounting Bolts Fig. 31 — Fan Motor Mounting Fan Rotation 3. Use the methods shown in Fig. 33 to check proper pul- ley alignment. Correct fan rotation with respect to fan outlet is shown in Fig.
Page 32: Pulley And Drive Adjustment
Pulley and Drive Adjustment To obtain desired fan speed, refer to the fan motor, drive CAUTION data and performance data in Tables 12-25 and adjust fan motor pulley as follows: UNIT OPERATION HAZARD 1. Remove belt from fan motor pulley after loosening Failure to follow this caution could cause equipment motor from motor base.
Page 33 Table 12 — Fan Motor Data, Standard Motor — English UNIT FAS/FHS240 FAS300 FAS336 208/23-3-60 and 460-3-60 Speed (rpm) 1755 1760 1755 10.0 Frame (NEMA) 184T S213T S215T Shaft Dia (in.) 1-1/8 1-3/8 1-3/8 575-3-60 Speed (rpm) 1755 1750 1755 10.0 Frame (NEMA) 184T...
Page 34 Table 16 — Standard Drive Data, 60 Hz — English UNIT FAS/FHS240 FAS300 FAS336 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.) 1-1/16 1-15/16 1-15/16...
Page 35 Table 18 — High-Static Drive Data, 60 Hz — English UNIT FAS/FHS240 FAS300 FAS336 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 1-15/16 Belt No.
Page 36 Table 20 — Medium-Static Drive Data, 60 Hz — SI UNIT FAS/FHS240 FAS300 FAS336 Motor Drive Motor Pulley Pitch Diameter 109.2-134.6 109.2-134.6 109.2-134.6 (mm) Pulley Factory Setting Full Turns Open Fan Drive Pulley Pitch Dia (mm) Pulley Bore (mm) 36.5 49.2 49.2 Belt No.
Page 37 (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 FAS240 8,000 2.83 3.01 3.38 3.77 4.21 4.70 5.24 FHS240 9,000 3.97 4.18 4.59 5.02 5.47 5.96 1030 6.51 10,000 5.38...
Page 38 14.10 2.19 15.08 2.53 3300 10.14 1.44 10.69 1.56 11.70 1.81 12.71 2.08 13.73 2.41 14.74 2.77 15.71 3.15 FAS240 3780 11.43 2.11 11.93 2.25 12.84 2.52 13.71 2.81 14.60 3.14 15.49 3.51 16.39 3.91 FHS240 4250 12.74 2.96 13.19 3.12...
Page 39 (in. wg) AIRFLOW UNIT (cfm) 6,000 1.29 1042 1.72 2.09 2.51 2.95 3.40 7,000 1.99 2.15 2.48 2.85 3.28 3.76 4.27 FAS240 8,000 2.92 3.10 3.46 3.85 4.29 4.78 5.32 FHS240 9,000 4.10 4.30 4.71 5.13 5.58 6.08 1039 6.62 10,000 5.56...
Page 40 1087 14.15 2.20 15.12 2.54 3330 10.34 1.48 10.86 1.60 11.85 1.85 12.84 2.12 13.85 2.45 14.84 2.80 15.78 3.18 FAS240 3780 11.67 2.17 12.14 2.31 13.02 2.58 13.88 2.87 14.75 3.20 15.63 3.56 16.50 3.96 FHS240 4250 13.01 3.05 13.44...
Page 41: Variable Frequency Drive
Variable Frequency Drive Table 27 — ACH550 VFD Terminal Designations The VFD switches the indoor fan motor speed between full/ TERMINAL FUNCTION high speed (60 Hz motor operation) and reduced/low speed (40 Hz motor operation), as required by ASHRAE Three-Phase main circuit input power supply 90.1-2016 and IECC-2015 requirements for two-stage HVAC units.
Page 42: Alarms
ALARMS FAULTS Alarms are advisory in nature. These indicate a problem A fault is a significant internal situation for the VFD or its mo- has been detected by the VFD’s diagnostics but this prob- tor. If the motor was running when the fault was detected, it lem will not require that the VFD and its motor be shut was shutdown.
Page 43 Table 29 — Alarm Codes ALARM ALARM NAME IN PANEL DESCRIPTION AND RECOMMENDED CORRECTIVE ACTION CODE 2001 — Reserved 2002 — Reserved 2003 — Reserved The change in direction being attempted is not allowed. Do not attempt to change the direction of motor 2004 DIR LOCK rotation, or Change parameter 1003 DIRECTION to allow direction change (if reverse operation is safe).
Page 44 Table 30 — Fault Codes FAULT FAULT NAME IN PANEL DESCRIPTION AND RECOMMENDED CORRECTIVE ACTION CODE Output current is excessive. Check for excessive motor load, insufficient acceleration time (parameters 2202 OVERCURRENT ACCELER TIME 1, default 30 seconds), or faulty motor, motor cables or connections. Intermediate circuit DC voltage is excessive.
Page 45: Vfd Maintenance
VFD MAINTENANCE If installed in an appropriate environment, the VFD requires very little maintenance. Table 31 lists the recommended routine maintenance Captive intervals. Screw Table 31 — Maintenance Intervals MAINTENANCE INTERVAL Every 6 to 12 months Heat sink temperature check (depending on the dustiness of and cleaning the environment)
Page 46: Bypass The Vfd
Bypass the VFD If there is an occasion where the VFD has malfunctioned and temporary cooling/operation is required, bypass the VFD as shown in Fig. 39. WARNING To bypass VFD: 1. Turn off and lock out unit power. Bypassing the VFD is not recommended. This is a 2.
Page 47: Condensate Drains
Condensate Drains CAUTION Keep condensate drains free of dirt and foreign matter. Return-Air Filters UNIT OPERATION HAZARD Failure to follow this caution could cause equipment Refer to Replacing Filters section for filter accessibility and damage. removal. Replace with clean filters of the sizes listed in Tables 1-4.
Page 48: Appendix A - Vfd Parameters
APPENDIX A — VFD PARAMETERS Table A — ACS320 Common Parameters Table B — ACH550 VFD Common Parameters SETTING SETTING PARAMETERS DESCRIPTION PARAMETERS DESCRIPTION ACS320 ACH550 9802 COMM Prot Sel — 9802 COMM Prot Sel — 9907 Motor Nominal Frequency 60Hz 9902 Application Macro...
Page 49 APPENDIX A — VFD PARAMETERS (cont) Table C — ACS320 VFD Parameters MOTOR CROSS DRIVE VOLTAGE N. AMPS N. RPM N. HP MOTOR PART NO. DESC. FREQ AMPS REFERENCE PARAMETERS PART NO. (9905) (9906) (9908) (9909) ACS320 (Hz) (2003) EM_PKG (9907) 40RU000516-DATA 40RU000516...
Page 50 © 2023 Carrier Lewisburg, TN 37091 USA Replaces: FAS-FHS-240-336-01SI FAS-FHS-240-336-02SI Specifications are subject to change without notice.
Page 51: Start-Up Checklist
START-UP CHECKLIST (SPLIT SYSTEMS WITH FAS/FHS UNITS) NOTE: To avoid injury to personnel and damage to equipment or prop- erty when completing the procedures listed in this start-up checklist, use good judgment, follow safe practices, and adhere to the safety con- siderations/information as outlined in preceding sections of this Installation, Start-Up, and Service document.
Page 52 CHECK THE COMPRESSOR OIL LEVEL SIGHT GLASSES, ARE THE SIGHT GLASSES SHOWING OIL LEVEL AT 1/8 to 1/3 FULL? (Y/N)_______________ NOTES: ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ © 2023 Carrier Lewisburg, TN 37091 USA Replaces: FAS-FHS-240-336-01SI FAS-FHS-240-336-02SI CL-2 Specifications are subject to change without notice. 2-23...

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