Fujitsu UTZ-BD035B Technical Manual
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Fujitsu UTZ-BD035B Technical Manual

Energy recovery ventilators
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See also: Service Manual
ENERGY RECOVERY VENTILATORS
DESIGN & TECHNICAL MANUAL
UTZ-BD025B
UTZ-BD035B
UTZ-BD050B
UTZ-BD080B
UTZ-BD100B
DTO_ERV002E_01
2013.04.26

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Summary of Contents for Fujitsu UTZ-BD035B

  • Page 1 ENERGY RECOVERY VENTILATORS DESIGN & TECHNICAL MANUAL UTZ-BD025B UTZ-BD035B UTZ-BD050B UTZ-BD080B UTZ-BD100B DTO_ERV002E_01 2013.04.26...

  • Page 2: Table Of Contents

    2-2. UTZ-BD035B ................01-05 2-3. UTZ-BD050B ................01-07 2-4. UTZ-BD080B ................01-09 2-5. UTZ-BD100B ................. 01-11 3. WIRING DIAGRAMS 3-1. UTZ-BD025B ................01-13 3-2. UTZ-BD035B, UTZ-BD050B ............01-13 3-3. UTZ-BD080B, UTZ-BD100B ............01-14 3-4. INTERLOCKED CONNECTION TO AIR CONDITIONER .... 01-15...
  • Page 3 4. DESIGN SECTION 4-1. ABOUT HEAT EXCHANGE UNIT ..........01-17 4-1-1. BASIC ENGIN ..................01-17 4-1-2. INTERNAL STRUCTURE ............... 01-18 4-1-3. HEAT EXCHANGE VENTILATION AND NORMAL VENTILATION ..01-19 4-2. NEEDS FOR VENTILATION ............01-20 4-2-1. OBJECTIVES AND EFFECTS OF VENTILATION ......... 01-20 4-3.

  • Page 4: Specifications

    Gross 349 x 1132 x 795 Weight (kg) Gross Outlet Duct Diameter (mm) Operation Range (°C) -10 to 40 Maximum Humidity (%) Model No. UTZ-BD035B Item Power Source 220–240V~ 50Hz Ventilation Mode Heat Exchange Ventilation Normal Ventilation Notch (Extra high)
  • Page 5 Model No. UTZ-BD080B Item Power Source 220–240V~ 50Hz Ventilation Mode Heat Exchange Ventilation Normal Ventilation Notch (Extra high) High (Extra high) High Input (W) 387-418 360-378 293-295 387-418 360-378 293-295 Air Volume (m External Static Pressure (Pa) Sound Pressure Level (dB) 37.0-37.5 36.5-37.0 33.5-34.5...

  • Page 6: Dimentions

    2. DIMENTIONS 2-1. UTZ-BD025B ② ⑤ ⑥ ⑩ ⑨ (Room Air) (Exhaust Air) (Outside Air) (Supply Air) ⑦ ⑪ ① 4-13×30 Oval hole · Suspension Fittings Inspection Opening □450 (For the inspection of the filters, heat exchange elements, fans, motors, and damper) Maintenance Space An inspection opening is necessary to clean the heat exchange element and...
  • Page 7  SPECIFICATIONS Heat Exchange Ventilation Normal Ventilation Product External Temperature Enthalpy External Frequency Model Power Weight Notch Input Current Static Exchange Exchange Noise Input Current Static Noise Source Volume Volume Pressure Efficiency Efficiency (%) Pressure (Hz) (Pa) Cooling Heating (dB) (Pa) (dB) (kg)

  • Page 8: Utz-Bd035B

    2-2. UTZ-BD035B ② ⑤ ⑥ ⑩ ⑨ (Room Air) (Exhaust Air) (Outside Air) (Supply Air) ⑪ ① ⑦ 4-13×30 Oval hole · Suspension Fittings Inspection Opening □450 Maintenance Space (For the inspection of the filters, heat exchange elements, fans, motors, and damper)
  • Page 9  SPECIFICATIONS Heat Exchange Ventilation Normal Ventilation Product External Temperature Enthalpy External Frequency Model Power Weight Notch Input Current Static Exchange Exchange Noise Input Current Static Noise Source Volume Volume Pressure Efficiency Efficiency (%) Pressure (Hz) (Pa) Cooling Heating (dB) (Pa) (dB) (kg)

  • Page 10: Utz-Bd050B

    2-3. UTZ-BD050B ② ⑤ ⑥ ⑩ ⑨ 1018 (Room Air) (Exhaust Air) (Outside Air) (Supply Air) ⑦ ⑪ ① 4-13×30 Oval hole · Suspension Fittings Inspection Opening □450 Maintenance Space (For the inspection of the filters, heat exchange elements, fans, motors, and damper) 1090 Wiring Diagram ③...
  • Page 11  SPECIFICATIONS Heat Exchange Ventilation Normal Ventilation Product External Temperature Enthalpy External Frequency Model Power Weight Notch Input Current Static Exchange Exchange Noise Input Current Static Noise Source Volume Volume Pressure Efficiency Efficiency (%) Pressure (Hz) (Pa) Cooling Heating (dB) (Pa) (dB) (kg)

  • Page 12: Utz-Bd080B

    2-4. UTZ-BD080B ⑤ ⑥ ⑩ ② ⑨ ⑧ 1250 (Room Air) (Exhaust Air) (Outside Air) (Supply Air) ⑦ ⑪ ① 4-13×30 Oval hole · Suspension Fittings Inspection Opening □450 Maintenance Space (For the inspection of the filters, heat exchange elements, fans, motors, and damper) An inspection opening is necessary to 1322 clean the heat exchange element and...
  • Page 13  SPECIFICATIONS Heat Exchange Ventilation Normal Ventilation Product External Temperature Enthalpy External Frequency Model Power Weight Notch Input Current Static Exchange Exchange Noise Input Current Static Noise Source Volume Volume Pressure Efficiency Efficiency (%) Pressure (Hz) (Pa) Cooling Heating (dB) (Pa) (dB) (kg)

  • Page 14: Utz-Bd100B

    2-5. UTZ-BD100B ⑤ ⑥ ⑧ ⑩ ② ⑨ 1250 (Room Air) (Exhaust Air) (Outside Air) (Supply Air) ⑦ ⑪ ① 4-13×30 Oval hole · Suspension Fittings Inspection Opening □450 Maintenance Space (For the inspection of the filters, heat exchange elements, fans, motors, and damper) 1322 ③...
  • Page 15  SPECIFICATIONS Heat Exchange Ventilation Normal Ventilation Product External Temperature Enthalpy External Frequency Model Power Weight Notch Input Current Static Exchange Exchange Noise Input Current Static Noise Source Volume Volume Pressure Efficiency Efficiency (%) Pressure (Hz) (Pa) Cooling Heating (dB) (Pa) (dB) (kg)

  • Page 16: Wiring Diagrams

    Yellow board each switch, refer to Page 7 Motor of the Owner’s manual. Connector Connector Relay 3 Micro switch Second main body 3-2. UTZ-BD035B, UTZ-BD050B Model No, Capacitor Main unit UTZ-BD035B 3.5 µF 450VAC Power Source (Line) Brown UTZ-BD050B 6.0 µF 450VAC...

  • Page 17: Utz-Bd080B, Utz-Bd100B

    3-3. UTZ-BD080B, UTZ-BD100B Model No, Capacitor Main unit UTZ-BD080B 10.0 µF 450VAC Power Source (Line) Brown Grey UTZ-BD100B 10.0 µF 450VAC Black Blue Power Source Black (Neutral) Grey Connector White Brown Black Black Capacitor Orange Orange Relay 4 Power Source Black Supply Switch...

  • Page 18: Interlocked Connection To Air Conditioner

    3-4. INTERLOCKED CONNECTION TO AIR CONDITIONER ● Operation is performed simultaneously with the air conditioner. ● Setting changes are made by energy recovery ventilator switch. Relay Air conditioner Energy recovery ventilator Air conditioner Energy recovery remote controller ventilator switch  Connection method ●...
  • Page 19 (2) When you want to operate using the energy recovery ventilator switch Operation is performed simultaneously by air conditioner remote controller even when the energy recovery ventilator switch is in the OFF state. The energy recovery ventilator can be operated by energy recovery ventilator switch even when the air conditioner is in the stopped state.

  • Page 20: About Heat Exchange Unit

    4. DESIGN SECTION 4-1. ABOUT HEAT EXCHANGE UNIT 4-1-1. BASIC ENGIN  BASIC PRINCIPLE AND  ADVANTAGES OF THE HEAT STRUCTURE OF THE HEAT EXCHANGE ELEMENT EXCHANGER  The height of the heat exchange element reduced by 20%  Basic principle of a heat exchanger The upper and lower protrusions have been cut out (see the figure The basic principle of a heat exchanger is as indicated below).

  • Page 21: Internal Structure

    4-1-2. INTERNAL STRUCTURE  HEAT EXCHANGE UNIT  INTERNAL STRUCTURE (CEILING-MOUNTED) (HEAT EXCHANGE VENTILATION) Bypass air course Heat exchange element Filter (for RA) Filter (for OA)  HEAT EXCHANGE UNIT  INTERNAL STRUCTURE (CEILING-MOUNTED) (NORMAL VENTILATION) Bypass air course Heat exchange element Filter (for RA) Filter (for OA)

  • Page 22: Heat Exchange Ventilation And Normal Ventilation

    4-1-3. HEAT EXCHANGE VENTILATION AND NORMAL VENTILATION  HEAT EXCHANGE VENTILATION Stale indoor air to be ex- hausted (EA) Fresh external air to be External air is heat-exchanged with indoor air, and supplied supplied indoors (SA) indoors after the temperature is made closer to the room Outdoor Indoor temperature...

  • Page 23: Needs For Ventilation

    4-2. NEEDS FOR VENTILATION 4-2-1. OBJECTIVES AND EFFECTS OF VENTILATION  EFFECTS OF VENTILATION  NEEDS FOR AIR SUPPLY Ventilation is not simply designed to exhaust stale air. It also Ventilation is to exchange indoor air with outdoor air. When ventilation is performed by a ventilating fan (generally for the has deodorizing, dust removal, dehumidification, and room exhausting function), if air inlet is limited (in a room or a building),...

  • Page 24: Methods Of Ventilation

    4-3. METHODS OF VENTILATION Ventilation can be divided into natural ventilation based  Local ventilation on natural conditions and mechanical ventilation based on This type of ventilation is performed for particular spots in a mechanical power. house (rooms or parts). ...

  • Page 25: Design Precautions

    4-4. DESIGN PRECAUTIONS 4-4-1. CAUTION ON SAFETY  SAFETY PRECAUTIONS WARNING When any abnormal condition If combustible gas leaks from Described below is what you are supposed to observe to prevent (scorching smell, etc.) is found, stop the unit, ventilate the room by dangers to the users or other people as well as damage or loss of the the operation immediately and keep opening windows.

  • Page 26: Inspection Opening And Installation Models

    4-4-2. INSPECTION OPENING AND INSTALLATION MODELS  INSPECTION OPENING Never fail to make the inspection opening at the specific place on the ceiling, so you can perform the constant cleaning, or the equipment checking of, the filter, the heat exchange element, and the humidifier. ...

  • Page 27: Use Environments

    4-4-3. USE ENVIRONMENTS  DEW CONDENSATION PREVENTION  PREVENTION OF INSECT INTRUSION The heat exchange unit takes in fresh outdoor air. Thus, if there are Our heat exchange unit has been confirmed not to cause dew insects in the outdoor environment, they may be sucked in through condensation water to drop under the following conditions.

  • Page 28: Heat Exchange Efficiency

    4-4-4. HEAT EXCHANGE EFFICIENCY  HOW TO CALCLATE HEAT EXCHANGE EFFICIENCY The heat exchange efficiency can be subdivided into the following Outdoor Indoor Fresh External Air three categories. Stale Indoor (OA) Air (RA) Temperature (sensible heat) efficiency Humidity (latent heat) efficiency Enthalpy (total heat) efficiency Heat Exchange Element...
  • Page 29  TOTAL HEAT EXCHANGE In the case of ventilation with the total heat exchange mode, the air condition supplied indoors is at point S; in summer, precooling is performed from the external air temperature to the indoor intake temperature, and dehumidifying is performed from the external absolute humidity to indoor intake absolute humidity;...

  • Page 30: Dust Collection Efficiency

    4-4-5. DUST COLLECTION EFFICIENCY  DUST COLLECTION EFFICIENCY Dust collection efficiency refers to the efficiency of a filter for collecting dust and dirt. There are various methods to determine the efficiencies, but the following are three most representative ones. * Mass ratio method: ···· Certain amounts of dust are applied to a filter and the collected volume is evaluated by the mass ratio.

  • Page 31: Noise

    4-4-6. NOISE  UNIT OF NOISE : DB (DECIBEL)  PRECAUTIONS CONCERNING NOISE LEVELS Sound pressure level with a weight corresponding to the “A” scale in the noise level meter is referred to the noise The noise values (dB) of the product indications are level.

  • Page 32: Noise Control

    4-4-7. NOISE CONTROL  CONTROLLING NOISE FROM  EFFECTS OF NOISE CONTROL EXHAUST/INTAKE OPENING MEASURES 1. The following components are recommended for a Points ceiling-mounted unit. 1. The noise-reduction duct (not less than 2m) should (1) Noise-reduction duct —— Glass-wool duct │...
  • Page 33  CONTROLLING NOISE GENERATED FROM EQUIPMENT AND AIR COURSES ABOVE CEILING AND UNDER ROOF 1. If noise control is deemed necessary as the unit is utilized in a quiet place, the following points should be carefully considered. (Otherwise, noise levels may rise.) (1) Do not downgrade the duct diameters extremely.

  • Page 34: Ventilation Design

    4-5. VENTILATION DESIGN 4-5-1. QUANTITY, DYNAMIC PRESSURE / STATIC PRESSURE  HOW TO INTERPRET STATIC The performance of a ventilation fan can be expressed by “quantity” and “static pressure.” These two factors are PRESSURE - QUANTITY closely related to each other and constitute prerequisites for CHARACTERISTIC CURVE considering “ventilation.”...

  • Page 35: How To Calculate Required Ventilation Volume

    4-5-2. HOW TO CALCULATE REQUIRED VENTILATION VOLUME To determine ventilation airflow volume, various calculation methods are available, based on diverse indoor conditions, such as the volume of CO generated by the number of occupying people, the volume of exhaust gasses generated by combustion, etc.

  • Page 36: Duct Design

    4-6. DUCT DESIGN 4-6-1. CALCULATION OF PRESSURE LOSSES DUE TO VENTILATION THROUGH DUCT  Ventilation is always conducted through ducts in ventilation Friction coefficients of common ducts fans for ducts and oven hoods (pressure type). To determine (references) the ventilation quantity, pressure losses due to the lengths, Duct Materials the number of bends, and external installation components, Aluminum flexible duct...
  • Page 37 Table 7-1 [2] Conversion from Rectangular Duct to Circular Duct Conditions Loss Length Graphic Name Coefficient Corresponding Depiction to PVC Pipe 0.71 0.75 0.33 A round bend with the circular 0.22 cross section 0.15 0.13 A square bend with the circular cross section 1.30 0.75...
  • Page 38  MODEL INSTALLATION (FOR Cautions for duct piping <When collective ducts are used> In an installation layout as in Fig. 4, do not operate the heat CEILING-MOUNTED TYPE) exchange unit A alone. When the heat exchange unit B stops operation, air is reversed Installation of Unit Body Ceiling Suspen- Ceiling Suspen-...

This manual is also suitable for:

Utz-bd025bUtz-bd050bUtz-bd100bUtz-bd080b

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