Lifebreath METRO 120D Installation Manual

Lifebreath METRO 120D Installation Manual

Heat recovery ventilators & energy recovery ventilators

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Pre-Installation Notes
Note
Due to ongoing research and product development, specifications, ratings, and dimensions are
subject to change without notice. Refer to www.LIFEBREATH.com for the latest product
information.
Attention
Do not apply electrical power to the unit until after the completion of the installation (including
installation of low voltage control wiring).
Ensure the installation and wiring is in accordance with CEC, NEC, and local electrical codes.
Plug the unit into a standard designated (120 VAC) electrical outlet with ground.
The use of an extension cord with this unit is not recommended. If the installation requires
further wiring, have a licensed electrician make all of the electrical connections. The
recommended circuit is a separate 15 A/120 V circuit.
Caution
Before installation, careful consideration must be given to how this system will operate if
connected to any other piece of mechanical equipment, i.e. a forced air furnace or air handler,
operating at a higher static. After installation, the compatibility of the two pieces of equipment
must be confirmed, by measuring the airflows of the HRV, by using the balancing procedure
found in this manual. Never install a ventilator in a situation where its normal operation, lack of
operation or partial failure may result in the back drafting or improper functioning of vented
combustion equipment
Unit must be installed level to ensure proper condensate drainage. Due to the broad range of
installation and operational conditions, consider the possibility of condensation forming on
either the unit or connecting ducting. Objects below the installation may be exposed to
condensate.
Do not install control wiring alongside electrical wire.
Warning

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Summary of Contents for Lifebreath METRO 120D

  • Page 1 Note Due to ongoing research and product development, specifications, ratings, and dimensions are • subject to change without notice. Refer to www.LIFEBREATH.com for the latest product information. Attention Do not apply electrical power to the unit until after the completion of the installation (including •...
  • Page 2 Note Due to ongoing research and product development, specifications, ratings, and dimensions are • subject to change without notice. Refer to www.lifebreath.com for the latest product information. Attention Do not apply electrical power to the unit until after the completion of the installation (including •...
  • Page 3: Table Of Contents

    Mounting ............................8 Drain Connection (HRVs only) ......................9 Grilles ............................10 Grille Fittings ..........................11 Lifebreath Weather Hoods ....................... 12 Lifebreath Dual Hood ........................13 Main Control Installation (99-DXPL02) ................... 14 Main Control Installation (99-BC02/3/4) ..................15 Interlocking the HRV/ERV ......................16 Additional Controls ........................
  • Page 4: Location Notes

    Attic installations are not recommended due to: • The complexity of work to install • Difficulty of access for servicing and cleaning • Freezing conditions in the attic If attic installation is necessary, the unit must be situated in a conditioned space. www.lifebreath.com...
  • Page 5: Simplified Installation (Return/Return Method)

    Backdraft dampers are recommended for the stale air to outside air duct. This damper prevents • outdoor air from entering the HRV/ERV during the operation of the furnace/air handler while the HRV/ERV is in standby, off, or recirculating. www.lifebreath.com...
  • Page 6: Partially Dedicated System Installation

    Backdraft dampers are recommended for the stale air to outside air duct. This damper prevents • outdoor air from entering the HRV/ERV during the operation of the furnace/air handler while the HRV/ERV is in standby, off, or recirculating. www.lifebreath.com...
  • Page 7: Fully Dedicated System Installation

    Backdraft dampers are recommended for the stale air to outside air duct. This damper prevents • outdoor air from entering the HRV/ERV during the operation of the furnace/air handler while the HRV/ERV is in standby, off, or recirculating. www.lifebreath.com...
  • Page 8: Mounting

    1. Using the hardware provided, install the mounting brackets to the unit. It is important to isolate the mounting bracket from the attached surface to minimize vibration. 2. Install the unit to the mounting surface. Attention Do not drill additional holes in the HRV/ERV • www.lifebreath.com...
  • Page 9: Drain Connection (Hrvs Only)

    Drain trap and tubing must be below bottom of door with 1/4 in per foot downwards slope away from unit. • A secondary drain pan may be required to protect from condensate leakage. Note • The HRV is to be mounted with door and drain down. www.lifebreath.com...
  • Page 10: Grilles

    The TechGrille is a round, fully adjustable grille, which provides quiet air distribution. • Part # 99-EAG4, 4 in (100 mm) • Part # 99-EAG5, 5 in (125 mm) • Part # 99-EAG6, 6 in (150 mm) • Part # 99-EAG8, 8 in (200 mm) www.lifebreath.com...
  • Page 11: Grille Fittings

    • Available size: 6 in. Caution • Do not mount exhaust grille within 4 ft (1.2 m) (horizontally) of a stove to prevent grease from entering the unit. www.lifebreath.com...
  • Page 12: Lifebreath Weather Hoods

    Intake: Should be located upstream (if there are prevailing winds) from the exhaust outlet. Not near dryer vents, furnace exhaust, driveways, oil fill pipes, gas meters, or garbage containers. Exhaust: Not near a gas meter, electric meter or a walkway where fog or ice could create a hazard. www.lifebreath.com...
  • Page 13: Lifebreath Dual Hood

    10 L IFEBREATH The Lifebreath Dual Hood only requires one 6 in. opening for intake and exhaust. The Lifebreath Dual Hood can be used up to a maximum airflow of 140 cfm. Available Units: 99-194 – 4 in. Dual Hood (not shown) •...
  • Page 14: Main Control Installation (99-Dxpl02)

    11. Connect the 3 wire 20 gauge (min.), 100 ft length (max.), to the 3 (RED), 4 (YEL), and 5 (GRN) terminals located on the HRV/ERV terminal block (figure C). Attention • Use care when separating or attaching the face plate to avoid damaging the contact pins. www.lifebreath.com...
  • Page 15: Main Control Installation (99-Bc02/3/4)

    10. Connect the 3 wire 20 gauge (min.), 100 ft length (max.), to the 3 (RED), 4 (YEL), and 5 (GRN) terminals located on the HRV/ERV terminal block (figure D). Attention • Use care when separating or attaching the face plate to avoid damaging the contact pins. www.lifebreath.com...
  • Page 16: Interlocking The Hrv/Erv

    Method). The HRV/ERV should be interlocked to the furnace/air handler with a Partially Dedicated System • Installation. Caution • Consideration should be given to competing airflows when connecting the HRV/ERV in conjunction with an air handler/ furnace blower system. www.lifebreath.com...
  • Page 17: Additional Controls

    “standby-off”. Unintentional operation of the HRV/ERV by the end user may occur if the unit is modified from “fully-off” to “standby-off”. • The BC-03 control does not have a “standby” mode. Therefore the DET-02 timers will not function with the control turned off. www.lifebreath.com...
  • Page 18: Timers

    HRV/ERV terminal block and connect the two timer wires to the 2 (ON) and 6 (HI) terminals on the HRV/ERV terminal block as shown. Attention • Timers mount in standard electrical boxes. • Use 3 wire 20 gauge (min.) 100 ft length (max.) low voltage wire and multiple timers individually wired back to the unit. www.lifebreath.com...
  • Page 19 5. Attach the face plate to the back plate (figure B). Attention • The wireless timers and repeaters must be matched to the digital wall control of the HRV/HRV. This process is called “Pairing”. Multiple timers and repeaters can be paired to the digital wall control. www.lifebreath.com...
  • Page 20: Repeaters

    7. To pair additional repeaters with the same main control, repeat steps 1 through 5 until all repeaters have been paired. Attention • The repeaters are to be plugged directly into a 120V power outlet. www.lifebreath.com...
  • Page 21: Installer Selectable High Speed Settings

    Adjusting the DIP Switches The circuit board on this unit has adjustable DIP switches for the selection of three different high speeds. The factory setting is Hi3. Refer to www.lifebreath.com for the specifications sheet particular to the unit. DIP Switch settings...
  • Page 22: Dimensional Drawings

    17 D IMENSIONAL RAWINGS Metro 120D and Metro 120D-ECM Dimensions: Metro 120F and Metro 120F-ECM Dimensions: www.lifebreath.com...
  • Page 23 17 D IMENSIONAL RAWINGS Metro 120ERV and Metro 120ERV-ECM Dimensions: Metro 120ERVD and Metro 120ERVD-ECM Dimensions: www.lifebreath.com...
  • Page 24: Balancing The Airflows

    Gauge Attachments: When sampling an airflow, various attachments are available for use on a digital manometer. Consult with your Lifebreath distributor for available options such as a pitot tube, flow measuring station, and an airflow measuring probe. The illustration below shows a digital manometer with a pitot tube attachment.
  • Page 25 • Installations where the HRV/ERV is ducted directly to the return of a furnace may require additional dampening on the fresh air to building duct. This is due to the high return static pressures found in some furnace installations. www.lifebreath.com...
  • Page 26: Balancing The Airflows - Pitot Tube

    3. Repeat Step 2 to measure the “Fresh Air to Inside” stream. 4. Review the readings and damper down the duct with the highest duct velocity pressure. Repeat Steps 2 and 3 until both ducts show identical readings. Upon completion of balancing, seal the holes with foil tape. www.lifebreath.com...
  • Page 27: Troubleshooting

    • HRV is set at too low a speed • On humid days, as the seasons change, some condensation may appear but the home’s air quality will remain high with some HRV/ERV • Increase speed of the HRV/ERV www.lifebreath.com...
  • Page 28 Look for kinks in the drain line drain lines • HRV is not level • Drain lines are obstructed • HRV heat exchange core is not properly installed Excessive Vibration • • Dirt on fan wheels Have contractor service HRV/ERV www.lifebreath.com...

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