Bosch EP015 Installation And Maintenance Manual
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Bosch EP015 Installation And Maintenance Manual

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EP Series
Installation and Maintenance Manual
8733922168 Revised 12-13

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  • Page 1 EP Series Installation and Maintenance Manual 8733922168 Revised 12-13...

  • Page 2: Table Of Contents

    R = RI GHT HZ – HORIZONTAL WATER CONECTIONS ERANT HEAT EX WATER TO REFRIG ATION C – COPP ER F = FRONT CUPRONICKEL 8733922168 Subject to change without prior notice Revised 12-13 ©Copyright 2011 Bosch, Inc All rights reserved...

  • Page 3: Ep Series

    Initial Inspection EP Series INITIAL INSPECTION be left in its shipping carton and stored in a clean, dry area. Units must only be stored or moved in the Be certain to inspect all cartons or crates on each normal upright position as indicated by the “UP” unit as received at the job site before signing the arrows on each carton at all times.

  • Page 4: Installation

    EP Series Installation INSTALLATION MOUNTING HORIZONTAL UNITS While horizontal units may be installed on any Remove shipping block under blower housing. level surface strong enough to hold their weight, Loosen compressor mounting bolts. they are typically suspended above a ceiling by threaded rods.

  • Page 5: Condensate Drain

    EP Series Condensate Drain connections, allowing easy removal of the access This connection must be in conformance with local panels, and replacement of air filters for routine plumbing codes. A trap must be installed in the maintenance. This will ensure proper work space for condensate line to insure free condensate flow.

  • Page 6: Electrical

    Connect the shock. power leads as indicated on the unit wiring diagrams. Table 1: EP Motor CFM Selection (Constant Torque ECM) Units Motor HP Tap1 Tap2 Tap3 Tap4 Tap5 EP015 HIGH EP018 HIGH EP024 HIGH EP030 HIGH EP036 HIGH EP042 HIGH...

  • Page 7: Thermostat Connections

    EP Series Thermostat Connections THERMOSTAT CONNECTIONS [5] UPM Board Settings [6] Water Coil Freeze Connection Thermostat wiring is connected to a 7 position low voltage terminal block in the electrical box. The thermostat [7] Air Coil Freeze Connection connections and their functions are as follows: [8] LED Status-Diagnostic Connection Compressor Operation [9] 24VAC Power Input...
  • Page 8 EP Series Safety Devices and the UPM Controller UPM Board Factory Default Settings Water side freeze protection sensor, Temp 30°F mounted close to condensing water coil, monitors refrigerant temperature between Lockout condensing water coil and thermal expansion Reset valve. If temperature drops below or remains Alarm PULSE at freeze limit trip for 30 seconds, the...
  • Page 9 EP Series test mode can lead to accelerated wear and premature failure of the unit. The “TEST” switch The UPM includes the following features: must be set back to “NO” for normal operation. • ANTI-SHORT CYCLE TIME—5 minute delay on •...

  • Page 10: Cooling Mode

    10 EP Series Considerations • L.E.D. FAULT INDICATION—Two L.E.D. indicators are provided: 1. Always check incoming line voltage power • Green: Power L.E.D. indicates 18—30 VAC supply and secondary control voltage for present at the board. adequacy. Transformer primaries are dual tapped for 208 and 230 volts.

  • Page 11: Sequence Of Operation

    Sequence of Operation EP Series Once the thermostat reaches set point temperature compressor will run until the desired setpoint and the humidity is above set point, the unit will temperature on the thermostat is achieved. operate in the hot gas reheat mode first by cooling Once the thermostat is satisfied, the compressor and dehumidifying, then reheating the air using hot shuts down and the fan ramps down in either fan...
  • Page 12 12 EP Series Hot Gas Reheat UPM Sequence of Operation (SOO) Flow Chart Y1=1 Power/Switchs/Sensor Status Check 18VAC > Lockout Can Be Set To 4 Via Dip Switch Blink Code On Status LED Soft Lockout HPC = 1 COUNT = 2 Record Alarm Start Counter (If Applicable) TIME >...
  • Page 13 EP Series Hot Gas Reheat Handle, set screw & flow indicator at 0 VDC position Sequence of Operation - On/Off Control The sequence of operation in the cooling and Self Adapt–OFF heating mode is the same as a regular heat pump. Rotate CW CW Rotation Direct Acting Feedback...

  • Page 14: Operating Pressures And Temperatures

    14 EP Series Refrigerant Flow Path Low Temperature Well Water Operating Pressures and Temperatures When low temperature well water is utilized as the Operating pressures and temperatures in the water source (below 55°F), a means of establishing reheat mode vary slightly from standard cooling two flow rates, one for the cooling/reheat mode mode operating characteristics.

  • Page 15: Electric Heat

    EP Series Well Water System On FHP units’ gas flow to Hot Gas Coils is made with the increase of DC volts output from Duct Control of the hot gas modulation is by the Caution thermostat in the supply air duct or through the Stat.

  • Page 16: Heat Recovery Package

    16 EP Series Electric Heat HEAT RECOVERY PACKAGE ECM INTERFACE BOARD- CONSTANT AIRFLOW MOTOR (OPTION) The Heat Recovery package is a factory mounted In addition to providing a connecting point for option. It consists of a forced pumped unit that thermostat wiring, the interface board also employs a circulating pump to move water translates thermostat inputs into control com-...

  • Page 17: Airflow Selector

    Heat Recovery Package EP Series • CFM count indicator (See Figure #9, item [6]) blinks to indicate approximate airflow in CFM and ADJUST Selector can be adjusted to NOM, (+), (-), may flicker when unit is off. or TEST. NOM, (+) and (-) can be adjusted as needed by application.

  • Page 18: Fluid Differential Pressure Switch

    18 EP Series Dehumidificationselector (Figure #9, item [11]) should FLUID DIFFERENTIAL PRESSURE SWITCH be selected to ‘YES’. (DPS) 2) Units without optional Hot Gas Reheat, on Pressure/temperature ports are recommended in dehumidification call, the heat pump fan will operate at a both the supply and return lines for system flow lower speed to increase dehumidification while cooling.

  • Page 19: Water Piping

    EP Series Differential Pressure Switch ensure the entire system is properly flushed. After the WATER PIPING cleaning and flushing has taken place the unit may be connected to the water loop and should have all valves Water piping exposed to extreme low ambient wide open.

  • Page 20: Earth Coupled Systems

    20 EP Series Water Piping water loop. A cooling tower provides evaporative • Verify that the low voltage wiring between the cooling to the loop water thus maintaining a constant thermostat and the unit is correct supply temperature to the unit. When utilizing open •...

  • Page 21: Unit Start-Up

    EP Series Unit Start-Up MAINTENANCE IN-WARRANTY MATERIAL RETURN 1. Filter changes or cleanings are required at regular When contacting your Representative for service intervals. The time period between filter changes or replacement parts, refer to the model and serial will depend upon type of environment the number of the unit as stamped on the data plate equipment is used in.
  • Page 22 21.75 32.75 22.25 45.25 19.75 7.75 11.75 V: 18.0 V: 18”x20”x1” (1) V: 16.0 H: 20.25 H: 16.0 H: 18"x20”x1” (1) EP015 21.75 21.75 39.25 22.25 45.25 19.75 13.75 13.75 V: 18.0 V: 18.0 V: 20"x20”x1” (1) H: 20.25 H: 16.0 H: 18"x20"x1"...

  • Page 23: Unit Specifications

    140 / 165 160 / 185 EP009 0.15 154 / 172 174 / 192 EP012 0.31 166 / 173 186 / 205 EP015 0.31 191 / 190 208 / 218 EP018 0.31 195 / 198 212 / 222 EP024 0.48...
  • Page 24 24 EP Series Unit Specifications Air Temperature Rise/Fall Table 3: COOLING HEATING Entering Fluid Entering Air Temp °F Air Temp Drop °F Entering Air Temp °F Air Temp Rise °F Temp °F 16-8 - 25.1 15.9 - 23.7 14.8 - 22.1 75/63 21.9 - 27.2 20.0 - 28.5...
  • Page 25 Unit Specifications EP Series Refrigerant Pressure Ranges Table 4: COOLING HEATING Entering Entering Air Temp (Dry Bulb) Entering Air Temp (Dry Bulb) Fluid Fluid Temp Δ T 70 °F 75 °F 80 °F 60 °F 70 °F °F Suction Discharge Suction Discharge Suction...
  • Page 26 26 EP Series Fluid Pressure Drops Table 5: Flow Rate Pressure Pressure Flow Rate Pressure Pressure Model Model (GPM) Drop (FOH) Drop (PSI) (GPM) Drop (FOH) Drop (PSI) 0.61 0.51 1.26 0.91 2.11 1.41 10.1 4.38 2.67 16.9 7.34 4.28 1.00 0.71 1.68...
  • Page 27 Table 6: Standard Motor - PSC for 007-012, Constant Torque for 015-070 Available External Static Pressure (inches of Water) Model Motor Speed High EP007 Medium High EP009 Medium High EP012 Medium High EP015 Medium High EP018 Medium High EP024 Medium High 1225 1195 1170 1140 1110 1075...
  • Page 28 28 EP Series Table 7: Constant CFM Motor Available External Static Pressure (inches of Water) Model Motor Speed EP015 Normal EP018 Normal 1095 1095 1095 1095 1095 1095 1095 1095 1095 EP024 Normal 1150 1150 1150 1150 1150 1150 1150...

  • Page 29: Typical Wiring Diagrams

    EP Series TYPICAL WIRING DIAGRAMS PSC Motor | Hot Gas Reheat | Single Phase | Single Stage Revised 12-13 Subject to change without prior notice 8733922168...
  • Page 30 30 EP Series Typical Wiring Diagrams X13 Motor | Single Phase | Single Stage 8733922168 Subject to change without prior notice Revised 12-13...
  • Page 31 EP Series Typical Wiring Diagrams EON Motor | Economizer | Three Phase | Single Stage Revised 12-13 Subject to change without prior notice 8733922168...
  • Page 32 32 EP Series Unit Check-Out Sheet X13 Motor | Dual Power Supply | Three Phase | Single Stage 8733922168 Subject to change without prior notice Revised 12-13...
  • Page 33 EP Series Electric Heat Wiring Diagram Revised 12-13 Subject to change without prior notice 8733922168...
  • Page 34 34 EP Series Electric Heat Wiring Diagram 8733922168 Subject to change without prior notice Revised 12-13...

  • Page 35: Unit Check-Out Sheet

    Serial Number_______________________________ Max Fuse Size (Amps) __________________________________ Volts / Amps_____________________ /______________________ Entering Air Temperature _______________________________ Leaving Air Temperature _______________________________ Bosch Group 601 NW 65th Court Fort Lauderdale, FL 33309 Phone: 866-642-3198Fax: 800-776-5529 http://www.fhp-mfg.com Revised 12-13 Subject to change without prior notice...

  • Page 36: Troubleshooting

    36 EP Series TROUBLESHOOTING Problem Possible Cause Checks and Corrections Entire unit does Power Supply Off Apply power, close disconnect not run Blown Fuse Replace fuse or reset circuit breaker. Check for correct fuses Voltage Supply Low If voltage is below minimum voltage specified on unit data plate, contact local power company.
  • Page 37 Troublehsooting EP Series Insufficient Unit undersized Recalculate heating and or cooling loads. If excessive, possibly adding insulation and shading will rectify the problem cooling or heating Loss of Check for leaks in duct work or introduction of ambient air conditioned air by through doors or windows leakage Airflow...
  • Page 38 38 EP Series 8733922168 Subject to change without prior notice Revised 12-13...
  • Page 39 EP Series Revised 12-13 Subject to change without prior notice 8733922168...
  • Page 40 601 N.W. 65th Court, Ft. Lauderdale, FL 33309 Phone: 866-642-3198 | Fax: 954-776-5529 www.boschtaxcredit.com | www.fhp-mfg.com Revised 12-13...

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