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Enertech FB Series Installation, Operation & Maintenance Manual

Compact high-capacity
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EnErtEch (FB) compact high-capacity SEriES
INSTALLATION, OPERATION
INSTALLATION, OPERATION
& MAINTENANCE MANUAL
& MAINTENANCE MANUAL
Part#: 97B0151N01 | Created: November 12, 2024
Part#: 97B0151N01 | Created: November 12, 2024
Models: FB 072-300
60Hz – R-454B

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  • Page 1 EnErtEch (FB) compact high-capacity SEriES INSTALLATION, OPERATION INSTALLATION, OPERATION & MAINTENANCE MANUAL & MAINTENANCE MANUAL Part#: 97B0151N01 | Created: November 12, 2024 Part#: 97B0151N01 | Created: November 12, 2024 Models: FB 072-300 60Hz – R-454B...

  • Page 2: Table Of Contents

    Electrical Data: Dual Point Power Enertech works continually to improve its products. As a result, the design and specifications of each product at the time of order may be changed without notice and may not be as described herein. Please contact Enertech’s Customer Service Department at 618-664-5860 for specific information on the current design and specifications.

  • Page 3: Model Nomenclature

    EnErtEch (FB) compact high-capacity SEriES– iom models: Model Nomenclature 072-300 PRODUCT NAME STANDARD F = R-454B Refrigerant S = Standard MODEL TYPE BLOWER MOTOR B = Compact High-Capacity Series Single-Point Dual-Point Belt Drive Power Power SUPPLY/RETURN Standard CONFIGURATION Standard Low RPM...

  • Page 4: Attentions, Cautions, And Warnings

    WARNING WARNING Disconnect power supply(ies) before servicing. Refer Only auxiliary electric heaters approved by Enertech shall be installed servicing to qualified service personnel. Electric shock in connecting ductwork. The installation of any other auxiliary devices hazard. May result in injury or death! is beyond Enertech’s responsibility.
  • Page 5 EnErtEch (FB) compact high-capacity SEriES– iom models: Attentions, Cautions, and Warnings 072-300 CAUTION DO NOT store or install units in corrosive environments or in locations subject to temperature or humidity extremes (e.g., attics, garages, rooftops, etc.). Corrosive conditions and high temperature or humidity can significantly reduce performance, reliability, and service life.

  • Page 6: General Information

    EnErtEch (FB) compact high-capacity SEriES– iom models: General Information 072-300 INSPECTION PRE-INSTALLATION Upon receipt of the equipment, carefully check the Installation, Operation, and Maintenance instructions shipment against the bill of lading. Make sure all units are provided with each unit. Horizontal equipment have been received.
  • Page 7 EnErtEch (FB) compact high-capacity SEriES– iom models: General Information 072-300 Work Procedure Checks to the Refrigeration Equipment Work shall be undertaken under a controlled procedure The following checks shall be applied to installations so as to minimise the risk of a flammable gas or vapor using FLAMMABLE REFRIGERANTS: being present while the work is being performed.
  • Page 8 EnErtEch (FB) compact high-capacity SEriES– iom models: General Information 072-300 REPAIR TO INTRINSICALLY SAFE COMPONENTS REQUIRED AREA FOR INSTALLATION Intrinsically safe components must be replaced. The minimum room area of the space (A ) or a minimum room area of conditioned space (TA CABLING shall be corrected for unit’s location altitude by...

  • Page 9: Minimum Installation Area

    EnErtEch (FB) compact high-capacity SEriES– iom models: Minimum Installation Area 072-300 MINIMUM INSTALLATION AREA Minimum area where a blower-equipped unit must be installed, and mechanical/natural ventilation is not required Minimum Installation Charge Area ft ) [A Model Configuration Minimum area where unit is installed where unit...
  • Page 10 EnErtEch (FB) compact high-capacity SEriES– iom models: Minimum Installation Area 072-300 Minimum CFM for mechanical ventilation Minimum CFM [Q = Minimum area where the exhausted air is sent Charge Model Configuration (oz) Floor Window Wall Ceiling (floor) = 0.0 ft (0.0 m)

  • Page 11: Refrigerant System Servicing

    EnErtEch (FB) compact high-capacity SEriES– iom models: Refrigerant System Servicing 072-300 REFRIGERANT SYSTEM Charging Procedures To maintain sealed circuit integrity, do not install service gauges unless unit operation appears In addition to conventional charging procedures, the abnormal. Reference the operating charts for following requirements shall be followed: pressures and temperatures.
  • Page 12 EnErtEch (FB) compact high-capacity SEriES– iom models: Refrigerant System Servicing 072-300 Leak detection fluids are also suitable for use 4. Pump down refrigerant system, if possible. with most refrigerants but the use of detergents 5. If a vacuum is not possible, make a manifold so...
  • Page 13 EnErtEch (FB) compact high-capacity SEriES– iom models: Refrigerant System Servicing 072-300 RECOVERY When removing refrigerant from a system, either for In addition, a set of calibrated weighing scales servicing or decommissioning, it is recommended shall be available and in good working order.

  • Page 14: Fb072-120 Horizontal Dimensional Data

    EnErtEch (FB) compact high-capacity SEriES– iom models: FB072-120 Horizontal Dimensional Data 072-300 Discharge Overall Water Return Air Connections Connections Duct Electrical Knockouts Cabinet Connections Using Return Air Opening Flange Return Depth Actual area is 7.25” w x 8.875”h 1-1/8” 7/8”...

  • Page 15: Fb072-120 Vertical Dimensional Data

    EnErtEch (FB) compact high-capacity SEriES– iom models: FB072-120 Vertical Dimensional Data 072-300 Discharge Return Air Connections Using Overall Cabinet Connections Water Connections Electrical Knockouts Return Air Opening Duct Flange Return Return Width Height Unit Size 1-3/8” Actual area is 7.25” w x 8.875”h (3.5cm)

  • Page 16: Fb168-240 Vertical Dimensional Data

    EnErtEch (FB) compact high-capacity SEriES– iom models: FB168-240 Vertical Dimensional Data 072-300 Discharge Return Air Overall Cabinet Connections Water Connections Electrical Knockouts Connections Using Duct Flange Return Air Opening Unit Size 1-3/8” (3.5cm) Actual area is 7.25” w x 8.875”h Guides indicate .125”...

  • Page 17: Fb300 Vertical Dimensional Data

    EnErtEch (FB) compact high-capacity SEriES– iom models: FB300 Vertical Dimensional Data 072-300 Discharge Return Air Overall Cabinet Connections Water Connections Electrical Knockouts Connections Using Duct Flange Return Air Opening Unit Size 1-3/8” (3.5cm) inch 82.3 29.2 69.8 17.5 14.7 25.8 14.6...

  • Page 18: Horizontal Installation

    EnErtEch (FB) compact high-capacity SEriES– iom models: Horizontal Installation 072-300 HORIZONTAL UNIT LOCATION The installation of water source heat pump units and all associated components, parts and Units are not designed for outdoor installation. Locate accessories which make up the installation shall...
  • Page 19 EnErtEch (FB) compact high-capacity SEriES– iom models: Actual area is 3.5313” w x 8.875”h Actual area is 3.5313” w x 8.875”h Horizontal Installation 072-300 Guides indicate .125” bleed all around Guides indicate .125” bleed all around HORIZONTAL UNIT PITCH Figure 1: Hanger Bracket Detail A 1/4”...

  • Page 20: Condensate Piping

    EnErtEch (FB) compact high-capacity SEriES– iom models: Horizontal Installation 072-300 CONDENSATE PIPING STANDARD & STAINLESS STEEL DRAIN PANS A condensate drain line must be installed and pitched The condensate connection is female pipe away from the unit to allow for proper drainage. This thread.

  • Page 21: Duct System Installation

    Enertech RDS is installed as shown in Figure 15. constructed from ductboard for the first few feet. Application of the unit to uninsulated ductwork in an...

  • Page 22: Horizontal Field Conversion Of Air Discharge

    EnErtEch (FB) compact high-capacity SEriES– iom models: Horizontal Field Conversion of Air Discharge 072-300 BACK-TO-SIDE DISCHARGE CONVERSION WARNING To prevent injury or death from electrical shock, disconnect electrical If the discharge is changed from back to side, use power source.
  • Page 23 EnErtEch (FB) compact high-capacity SEriES– iom models: Horizontal Field Conversion of Air Discharge 072-300 Step 3: Prepare Blower Housing Assembly Step 5: Remove Bolts Adjusting bolt - Remove motor used to raise or and blower lower motor sheave slide assembly.
  • Page 24 EnErtEch (FB) compact high-capacity SEriES– iom models: Actual area is 3.5313” w x 8.875”h Horizontal Field Conversion of Air Discharge 072-300 Guides indicate .125” bleed all around Step 7: Secure Motor, Motor Sheave, Step 8: Secure Blower Panel and Access Panel...

  • Page 25: Vertical Installation

    Locate the unit in an INDOOR area that allows enough The following application guidelines must be used space for installation and for service personnel to when installing the Enertech FB. Failure to follow perform typical maintenance or repairs. FB units are these guidelines could result in unsatisfactory unit...

  • Page 26: Vertical Field Conversion Of Air Discharge

    EnErtEch (FB) compact high-capacity SEriES– iom models: Vertical Field Conversion of Air Discharge (072-120) Actual area is 3.5313” w x 8.875”h 072-300 Guides indicate .125” bleed all around Step 2: Remove Screws WARNING To prevent injury or death from electrical shock, disconnect electrical power source.
  • Page 27 EnErtEch (FB) compact high-capacity SEriES– iom models: Vertical Field Conversion of Air Discharge (072-120) 072-300 Step 3: Rotate and reattach blower Tilt blower and Rotate blower Flat side of panel forward 90° and panel 180° blower housing mounted towards motor side...

  • Page 28: Vertical Field Conversion Of Control Box

    EnErtEch (FB) compact high-capacity SEriES– iom models: Actual area is 3.5313” w x 8.875”h Vertical Field Conversion of Control Box (072-300) 072-300 Guides indicate .125” bleed all around Step 1: Remove Panels (FB072-120) WARNING To prevent injury or death from electrical shock, disconnect electrical power source.

  • Page 29: Field Conversion Of Water Connections

    EnErtEch (FB) compact high-capacity SEriES– iom models: Field Conversion of Water Connections (072-240) 072-300 WARNING To prevent injury or death from electrical shock, disconnect electrical power source. OVERVIEW For unit sizes 072-240, the water connection can be field converted to opposite side. Connections can be both left, right, or one on each side.

  • Page 30: Vertical Condensate Installation

    EnErtEch (FB) compact high-capacity SEriES– iom models: Vertical Condensate Installation 072-300 CONDENSATE PIPING WARNING Ensure condensate line is pitched toward drain 1/4 inch per foot Remove KO on the side to which that drain will be [10mm per 46cm] of run.

  • Page 31: Piping Installation

    Piping Installation 072-300 INSTALLATION SUPPLY AND RETURN PIPING Optional pressure-rated hose assemblies designed specifically for use with Enertech units are available. Follow these piping guidelines: Similar hoses can be obtained from alternate suppliers. Supply and return hoses are fitted with...

  • Page 32: Water-Loop Heat Pump Applications

    EnErtEch (FB) compact high-capacity SEriES– iom models: Water-Loop Heat Pump Applications 072-300 COMMERCIAL WATER-LOOP APPLICATIONS Commercial systems typically include a number of The piping system should be flushed to remove units connected to a common piping system. Any dirt, piping chips, and other foreign material...

  • Page 33: Ground-Loop Heat Pump Application

    EnErtEch (FB) compact high-capacity SEriES– iom models: Ground-Loop Heat Pump Application 072-300 Test individual horizontal loop circuits before CAUTION backfilling. Test vertical U-bends and pond loop The following instructions represent industry accepted installation assemblies prior to installation. Pressures of at least practices for closed loop earth coupled heat pump systems.

  • Page 34: Water Quality Requirements

    EnErtEch (FB) compact high-capacity SEriES– iom models: Water Quality Requirements 072-300 Table 4: Water Quality Requirements Clean water is essential to the performance and life span of water source heat pumps. Contaminants, chemicals, and minerals all have the potential to cause damage to the water heat exchanger if not treated properly.
  • Page 35 EnErtEch (FB) compact high-capacity SEriES– iom models: Water Quality Requirements 072-300 α The Water Quality Table provides water quality Hydrogen Sulfide has an odor of rotten eggs. requirements for coaxial and brazed-plate If one detects this smell, a test for H S must be heat exchangers.
  • Page 36 EnErtEch (FB) compact high-capacity SEriES– iom Actual area is 7.25” w x 8.875”h models: Water Quality Requirements Guides indicate .125” bleed all around 072-300 Measuring Earth Ground Resistance for Ground-Water Applications � 0.02 Building Well Casing Ground Rod Ohm meter Measure the earth ground bond using an Ohm meter between the building’s ground rod and the steel...
  • Page 37 EnErtEch (FB) compact high-capacity SEriES– iom Actual area is 7.25” w x 8.875”h models: Water Quality Requirements Guides indicate .125” bleed all around 072-300 Measuring Electrolysis, Voltage, and Current for Ground-Water Applications 300mV Heat Pump Volt Meter Wire Electrode inserted into port for Voltage Measurement Pete’s Port...

  • Page 38: Electrical Data: Standard

    EnErtEch (FB) compact high-capacity SEriES– iom models: Electrical Data: Standard 072-300 Compressor Rated SCCR SCCR Max Fuse Voltage Min/Max Blower Model Voltage Motor Current Circuit kA RMS Volts HACR Code Voltage Option Amps Amps Symetrical Maximum Amps 187/253 1,2,3 12.2 97.5...

  • Page 39: Electrical Data: Dual Point Power

    EnErtEch (FB) compact high-capacity SEriES– iom models: Electrical Data: Dual Point Power 072-300 Compressor Power Supply Fan Power Supply Voltage Min/Max Blower Rated SCCR SCCR SCCR SCCR Voltage Fuse Fuse Code Voltage Option Qty RLA Current Circuit kA RMS Volts...
  • Page 40 EnErtEch (FB) compact high-capacity SEriES– iom models: Electrical Data: Dual Point Power 072-300 Table continued from previous page. Compressor Power Supply Fan Power Supply Voltage Min/Max Blower Rated SCCR SCCR SCCR SCCR Voltage Fuse Fuse Code Voltage Option Qty RLA...

  • Page 41: Electrical: Power And Low Voltage Wiring

    EnErtEch (FB) compact high-capacity SEriES– iom models: Electrical: Power and Low Voltage Wiring 072-300 ELECTRICAL Figure 9: LT1 Limit Setting Line Voltage - All field installed wiring, including electrical ground, must comply with NFPA 70: National Electrical Code (NEC), CSA C22.1: Canadian Electrical Code (CE Code), as well as applicable local codes.

  • Page 42: Electrical: Cxm2 Example Wiring Diagram

    EnErtEch (FB) compact high-capacity SEriES– iom models: Electrical: CXM2 Example Wiring Diagram 072-300 NOTES: Field Use Only: Transformer wiring is voltage-sensitive. Use layout corresponding to the unit voltage. Typical heat-pump thermostat wiring shown. Refer to thermostat IOM for wiring to the unit. Thermostat wiring must be “Class I”...

  • Page 43: Electrical: Low Voltage Wiring

    The field-installed high-pressure switch shall have a cut-out pressure of 300 psig and a cut-in pressure of 250 psig. This pressure switch can be ordered from Enertech with a 1/4-inch internal flare connection as part number 39B0005N02.
  • Page 44 EnErtEch (FB) compact high-capacity SEriES– iom models: Electrical: Low Voltage Wiring 072-300 REFRIGERANT DETECTION SYSTEM (RDS) RDS SENSOR PLACEMENT The function, operation, and required servicing Use the following guidelines to maintain the installation measures for the Refrigerant Detection System (RDS)

  • Page 45: Electrical: Thermostat Wiring

    CXM2. erroneous temperature measurement. Practically any heat pump thermostat will work with Enertech units, provided it has the correct number of Position the thermostat back plate against the wall heating and cooling stages.

  • Page 46: Electrical: External Pump Control

    EnErtEch (FB) compact high-capacity SEriES– iom models: Actual area is 7.25” w x 8.875”h Electrical: External Pump Control 072-300 Guides indicate .125” bleed all around EXTERNAL PUMP CONTROL Figure 16: External Pump Control Diagram 24V Contacts 24V Contacts 24V COIL...

  • Page 47: Controls: Cxm2

    EnErtEch (FB) compact high-capacity SEriES– iom models: Controls: CXM2 072-300 CXM2 Communicating Controls For detailed controller information, see the CXM2 Application, Operation, and Maintenance (AOM) manual (part # 97B0137N01). To confirm the controller type of your particular unit, refer to digit 9 on the unit model number and the unit nomenclature diagram found on page 3 of this manual.

  • Page 48: Blower Adjustment

    Use the following steps to ensure proper belt tensioning: Selection Adjustment Remove belt from motor sheave The FB Series is available with standard, low, and 2. Lift motor assembly high static options. These options will substitute a different blower drive sheave for each static range.

  • Page 49: Vfd Operation

    EnErtEch (FB) compact high-capacity SEriES– iom models: VFD Operation 072-300 SINGLE ZONE VARIABLE AIR VOLUME (VAV) DISCRETE SPEED VFD OPERATION Products with option “6” or “F” in the 14th digit of When the CXM2 is configured for discrete-speed the model number come with a variable frequency...
  • Page 50 EnErtEch (FB) compact high-capacity SEriES– iom models: VFD Operation 072-300 If the control switches from the heating mode to When the control stages from first to second cooling, or cooling to heating without de-activating stage operation, the output voltage signal will be...
  • Page 51 EnErtEch (FB) compact high-capacity SEriES– iom models: VFD Operation 072-300 Table 6: VFD Control Values Minimum VFD Maximum VFD Fixed VFD Fixed VFD Fixed Part Load Default Fan Model Speed VFD Speed Speed A Speed B Speed C Multiplier Speed FB072 10.0...

  • Page 52: Tensioning V-Belt Drives

    EnErtEch (FB) compact high-capacity SEriES– iom models: Tensioning V-Belt Drives 072-300 GENERAL RULES OF TENSIONING TENSION MEASUREMENT PROCEDURE Ideal tension is the lowest tension at which the 6. Measure the belt span (see sketch). belt will not slip under peak load conditions.

  • Page 53: Blower Sheave Information

    EnErtEch (FB) compact high-capacity SEriES– iom models: Blower Sheave Information 072-300 Horizontal Vertical Sheave Sheave Model Drive Model Drive Belt Belt Size Package Size Package Motor Blower Bushing Motor Blower Bushing 1VP34 X 7/8 B BK67 X 1 B V-BELT BX47...

  • Page 54: Blower Performance

    EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB072 072-300 SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 0.28 0.32 0.35 0.39 0.42 0.45 0.48 0.52 0.56 0.60 0.64...
  • Page 55 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB072 with VFD 072-300 SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 0.28 0.32 0.35 0.39 0.42 0.45 0.48 0.52 0.56...
  • Page 56 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB096 072-300 SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 0.45 0.50 0.54 0.59 0.63 0.69 0.74 0.80 0.85 0.90 0.94...
  • Page 57 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB096 072-300 Table continued from previous page. SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 1.24 1.30 1.37 1.44 1.51 1.58...
  • Page 58 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB096 with VFD 072-300 SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 0.45 0.50 0.54 0.59 0.63 0.69 0.74 0.80 0.85...
  • Page 59 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB096 with VFD 072-300 Table continued from previous page. SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 1.16 1.23 1.29 1.36...
  • Page 60 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB120 072-300 SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 0.75 0.81 0.86 0.91 0.97 1.03 1.09 1.15 1.21 1.27 1.34...
  • Page 61 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB120 072-300 Table continued from previous page. SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 2.00 2.07 2.16 2.23 2.31 2.41...
  • Page 62 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB120 with VFD 072-300 SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 0.75 0.81 0.86 0.91 0.97 1.03 1.09 1.15 1.21...
  • Page 63 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB120 with VFD 072-300 Table continued from previous page. SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 2.14 2.22 2.32 2.40...
  • Page 64 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB168 072-300 SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 0.69 0.78 0.86 0.95 1.02 1.11 1.21 1.32 1.41 1.50 1.57...
  • Page 65 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB168 with VFD 072-300 SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 0.69 0.78 0.86 0.95 1.02 1.11 1.21 1.32 1.41...
  • Page 66 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB192 072-300 SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 0.98 1.07 1.16 1.24 1.34 1.47 1.59 1.69 1.78 1.87 1.96...
  • Page 67 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB192 072-300 Table continued from previous page. SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 2.40 2.54 2.66 2.80 2.92 3.04...
  • Page 68 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB192 with VFD 072-300 SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 0.98 1.07 1.16 1.24 1.34 1.47 1.59 1.69 1.78...
  • Page 69 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB192 with VFD 072-300 Table continued from previous page. SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 2.40 2.54 2.66 2.80...
  • Page 70 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB240 072-300 SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 1.78 1.89 2.00 2.12 2.24 2.36 2.48 2.60 2.74 2.89 3.01...
  • Page 71 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB240 072-300 Table continued from previous page. SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 3.35 3.48 3.65 3.79 3.96 4.13...
  • Page 72 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB240 with VFD 072-300 SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 1.78 1.89 2.00 2.12 2.24 2.36 2.48 2.60 2.74...
  • Page 73 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB240 with VFD 072-300 Table continued from previous page. SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 3.35 3.48 3.65 3.79...
  • Page 74 EnErtEch (FB) compact high-capacity SEriES– iom Blower Performance models: FB300 with VFD 072-300 SCFM ESP (in.w.c.) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 2.69 2.84 2.96 3.11 3.27 3.45 3.60 3.78 3.96...

  • Page 75: Operating Limits And Commissioning Conditions

    EnErtEch (FB) compact high-capacity SEriES– iom models: Operating Limits and Commissioning Conditions 072-300 OPERATING LIMITS COMMISSIONING CONDITIONS Environment – Units are designed for indoor Starting conditions vary depending upon model and installation only. Never install units in areas subject are based upon the following notes:...

  • Page 76: Piping System Cleaning And Flushing

    4. Verify that all strainers are in place (Enertech method prior to any finishing of the interior space recommends a strainer with a #20 stainless steel or before access to all connections is limited.

  • Page 77: Unit And System Checkout

    EnErtEch (FB) compact high-capacity SEriES– iom models: Unit and System Checkout 072-300 UNIT CHECKOUT SYSTEM CHECKOUT BEFORE POWERING SYSTEM, please check the following: System water temperature: Check water † temperature for proper range and also verify Line voltage and wiring: Verify that voltage is †...

  • Page 78: Unit Startup Procedure

    EnErtEch (FB) compact high-capacity SEriES– iom models: Unit Startup Procedure 072-300 Turn the thermostat fan position to “ON”. Blower (HR) can be calculated and compared to should start. submittal data capacity pages. The formula for HR for systems with water is as follows: 2.
  • Page 79 EnErtEch (FB) compact high-capacity SEriES– iom models: Unit Startup Procedure 072-300 The formula for HE for systems with water is NOTE: If performance during any mode appears as follows: abnormal, refer to the CXM2 section or troubleshooting section of this manual. To obtain maximum...
  • Page 80 EnErtEch (FB) compact high-capacity SEriES– iom models: Unit Startup Procedure 072-300 Table 11: Motorized Water Valve and Modulating Valve Adders MOD Valve Pressure Pressure Size Flow Close Off Close Off Drop Drop MOPD MOPD Pressure Pressure 9.00 0.06 0.1 0.81 1.9 13.50...

  • Page 81: Unit Operating Conditions

    Subcooling is based on head pressure reading taken at the compressor discharge service port and line temperature reading on the discharge line by the compressor discharge service port. Cooling air and water values can vary greatly with changes in humidity level Table 12: FB Series Typical Unit Operating Pressures and Temperatures CKT1 CKT1...
  • Page 82 EnErtEch (FB) compact high-capacity SEriES– iom models: Unit Operating Conditions 072-300 CKT1 CKT1 CKT2 CKT2 Entering Water Water Water Discharge Suction Discharge Suction Water Flow Temp Temp Temp Temp Superheat Subcooling Superheat Subcooling Pressure Pressure Pressure Pressure Temp GPM/ Rise...
  • Page 83 EnErtEch (FB) compact high-capacity SEriES– iom models: Unit Operating Conditions 072-300 CKT1 CKT1 CKT2 CKT2 Entering Water Water Water Discharge Suction Discharge Suction Water Flow Temp Temp Temp Temp Superheat Subcooling Superheat Subcooling Pressure Pressure Pressure Pressure Temp GPM/ Rise...
  • Page 84 EnErtEch (FB) compact high-capacity SEriES– iom models: Unit Operating Conditions 072-300 CKT1 CKT1 CKT2 CKT2 Entering Water Water Water Discharge Suction Discharge Suction Water Flow Temp Temp Temp Temp Superheat Subcooling Superheat Subcooling Pressure Pressure Pressure Pressure Temp GPM/ Rise...
  • Page 85 EnErtEch (FB) compact high-capacity SEriES– iom models: Unit Operating Conditions 072-300 CKT1 CKT1 CKT2 CKT2 Entering Water Water Water Discharge Suction Discharge Suction Water Flow Temp Temp Temp Temp Superheat Subcooling Superheat Subcooling Pressure Pressure Pressure Pressure Temp GPM/ Rise...
  • Page 86 EnErtEch (FB) compact high-capacity SEriES– iom models: Unit Operating Conditions 072-300 CKT1 CKT1 CKT2 CKT2 Entering Water Water Water Discharge Suction Discharge Suction Water Flow Temp Temp Temp Temp Superheat Subcooling Superheat Subcooling Pressure Pressure Pressure Pressure Temp GPM/ Rise...
  • Page 87 EnErtEch (FB) compact high-capacity SEriES– iom models: Unit Operating Conditions 072-300 CKT1 CKT1 CKT2 CKT2 Entering Water Water Water Discharge Suction Discharge Suction Water Flow Superheat Subcooling Superheat Subcooling Temp Temp Temp Temp Pressure Pressure Pressure Pressure Temp GPM/ Rise...

  • Page 88: Startup Log Sheet

    EnErtEch (FB) compact high-capacity SEriES– iom Startup Log Sheet models: models: Startup Log Sheet Large Belt Drive Packaged Units tc_L, tL 072-300 7300 S.W. 44th Street, Oklahoma City, OK 73179 • Phone: 405.745-6000 Installer: Complete Unit and System Checkout and follow Unit Startup Procedures in the IOM. Use this form to record unit information, temperatures, and pressures during startup.

  • Page 89: Preventative Maintenance

    EnErtEch (FB) compact high-capacity SEriES– iom models: Preventative Maintenance 072-300 WATER COIL MAINTENANCE CONDENSATE DRAIN (WATER LOOP APPLICATIONS) In areas where airborne bacteria may produce a “slimy” substance in the drain pan, it may be necessary Generally water coil maintenance is not needed for to treat the drain pan chemically with an algaecide closed loop systems.
  • Page 90 EnErtEch (FB) compact high-capacity SEriES– iom Actual area is 7.25” w x 8.875”h models: Circuit Diagram with Safety Devices Guides indicate .125” bleed all around 072-300 SOURCE WATER SOURCE WATER OUTLET INLET SYMBOL LEGEND BALL VALVE BALL VALVE (HOSES TEMPERATURE SENSOR...

  • Page 91: Functional Troubleshooting

    EnErtEch (FB) compact high-capacity SEriES– iom models: Functional Troubleshooting 072-300 Fault Htg Clg Possible Cause Solution Check line voltage circuit breaker and disconnect. Check for line voltage between L1 and L2 on the contactor. Main power problems Green Status LED Off Check for 24VAC between R and C on CXM2 Check primary/secondary voltage on transformer.
  • Page 92 EnErtEch (FB) compact high-capacity SEriES– iom models: Functional Troubleshooting 072-300 Table continued from previous page. Fault Htg Clg Possible Cause Solution Check power supply and 24VAC voltage before and during operation. Check power supply wire size. Under Voltage Over/Under Check compressor starting. Need hard start kit? Voltage Code 7 Check 24VAC and unit transformer.

  • Page 93: Performance Troubleshooting

    EnErtEch (FB) compact high-capacity SEriES– iom models: Performance Troubleshooting 072-300 Symptom Htg Clg Possible Cause Solution Dirty filter Replace or clean. Check for dirty air filter and clean or replace. Reduced or no airflow in heating Check fan motor operation and airflow restrictions.
  • Page 94 EnErtEch (FB) compact high-capacity SEriES– iom models: Performance Troubleshooting 072-300 Table continued from previous page. Symptom Htg Clg Possible Cause Solution Too high of airflow Check fan motor speed selection and airflow chart. High humidity Recheck loads & sizing. Check sensible cooling load and heat Unit oversized pump capacity.

  • Page 95: Functional Troubleshooting Form

    EnErtEch (FB) compact high-capacity SEriES– iom models: Functional Troubleshooting Form 072-300 Water-to-Air Units Model #: l a i f i t & Complaint: REFRIGERANT: R-454B HEATING POSITION COOLING POSITION OPERATING MODE: HEATING COOLING REFRIG FLOW - HEATING REFRIG FLOW - COOLING...

  • Page 96: Revision History

    Engineered and assembled in the USA. © Enertech Global, LLC. All Rights Reserved 2024 PA G E : 9 6 p a r t # : 9 7 B 0 1 5 1 n 0 1 | c r e a t e d : n o v e m b e r 1 2 , 2 0 2 4...

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