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Lifebreath 205 MAX - User Manual

Lifebreath 205 MAX
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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

Questions and Answers

  • B
    Brooke PrestonAug 12, 2025
    How to improve poor airflow in my Lifebreath 205 MAX?
    • A
      Ashlee GonzalezAug 12, 2025
      Poor airflow in your Lifebreath Fan can stem from several issues. Start by cleaning any plugged exterior hoods or vents. Next, remove and clean the filter. Also, ensure that the core is free from obstructions by removing and cleaning it. Check that all house grilles are open and unobstructed. If dampers are installed, make sure they are open and properly adjusted. It's also important to have an electrician verify the power supply voltage. Confirm the ductwork isn't restricting the HRV, and increase the HRV speed if the speed control setting is too low. If issues persist, have a contractor balance the HRV airflow.
  • J
    jennifer02Aug 16, 2025
    What to do if humidity levels are too high with Lifebreath 205 MAX?
    • G
      greenjamesAug 16, 2025
      High humidity levels and condensation on windows when using a Lifebreath Fan can be addressed by several adjustments. First, lower the dehumidistat setting. If you have a hot tub or indoor pool, cover them when not in use. Try to avoid hanging clothes to dry indoors, storing wood inside, or venting the clothes dryer inside. Ensure the crawl space is vented and has a vapor barrier. Increase the speed of the HRV unit. Also, ensure ducts from the washroom are adequately sized to remove moist air effectively; using a bathroom fan can help remove additional moisture.
  • W
    wrightjenniferAug 19, 2025
    What to do if the dehumidistat is not operating on my Lifebreath 205 MAX?
    • C
      christine44Aug 19, 2025
      If the dehumidistat on your Lifebreath Fan isn't working, consider these potential causes. First, if the outdoor temperature is above 15°C (59°F), the dehumidistat is likely functioning normally. Otherwise, check that the correct terminals have been used for the low voltage connection, and inspect the external wiring for any shorts caused by staples or nails. Also, ensure the dehumidistat is not set to the OFF position; adjust it to the desired setting.
  • S
    Steven BurgessAug 25, 2025
    Why does the supply air from my Lifebreath 205 MAX Fan feel cold?
    • E
      Emily SmithAug 25, 2025
      If the supply air from your Lifebreath Fan feels cold, consider these points: * Relocate supply grilles to high on the walls or under the baseboards, or install ceiling-mounted diffusers to avoid direct airflow on occupants. * If the outdoor temperature is extremely cold, reduce the HRV supply speed; a small duct heater (1 kW) can also temper the supply air. * Ensure furniture placement or closed doors aren't restricting air movement; if the supply air is ducted into the furnace return, the furnace fan may need to run continuously.
  • J
    James PayneAug 27, 2025
    How to improve poor airflows in Lifebreath Heating System?
    • A
      Alison MorenoAug 28, 2025
      Poor airflow in your Lifebreath Heating System can stem from several causes. Start by cleaning any plugged exterior hoods or vents. Check and clean the filters and the core. Ensure that house grilles and dampers, if installed, are open and properly adjusted. Have an electrician inspect the power supply voltage. Review duct installation to ensure it's not restricting the HRV. Increase the HRV speed if the speed control setting is too low. If issues persist, have a contractor balance the HRV.
  • T
    thompsonangelaAug 31, 2025
    Why are humidity levels too high with Lifebreath Heating System?
    • J
      Judith LaneAug 31, 2025
      High humidity levels and condensation in your home when using a Lifebreath Heating System can be addressed by several adjustments. Begin by setting the dehumidistat to a lower level. If you have a hot tub or indoor pool, ensure they are covered when not in use. Avoid drying clothes indoors, storing wood inside, and ensure your clothes dryer is properly vented. Ensure that washroom ducts are adequately sized to remove moist air, and consider using a bathroom fan. Increase the speed of the HRV. Note that condensation may appear during seasonal changes on humid days.
  • J
    Joshua JamesSep 3, 2025
    Why does supply air feel cold from Lifebreath Heating System?
    • S
      Sara HendersonSep 3, 2025
      If the supply air from your Lifebreath Heating System feels cold, consider these factors: The location of supply grilles might be causing discomfort; relocate them higher on the walls or under baseboards, or install ceiling-mounted diffusers. If the outdoor temperature is extremely cold, reduce the HRV supply speed or consider using a small duct heater. Ensure furniture or closed doors aren't restricting air movement. If supply air is ducted into the furnace return, the furnace fan may need to run continuously.
  • R
    robert61Sep 7, 2025
    What to do if dehumidistat is not operating on Lifebreath Heating System?
    • J
      Jason FullerSep 7, 2025
      If the dehumidistat on your Lifebreath Heating System isn't working, first, check if the outdoor temperature is above 15°C (59°F), as the dehumidistat may be functioning normally (see Auto Dehumidistat Disable in this manual). Verify the low voltage connections and check for shorts in the external wiring caused by staples or nails. Also, ensure the dehumidistat is not set to the OFF position and adjust it to the desired setting.

Summary

Pre-Installation Safety and Notes

Electrical Safety Precautions

Important safety instructions for electrical power, wiring, and grounding.

Installation Considerations

Careful consideration for system operation compatibility and condensate drainage.

Safety and Qualified Personnel Warning

Warning regarding property damage, injury, or death from improper installation or service.

Simplified Installation Method

Warnings for Simplified Installation

Warnings regarding local codes, special applications, and weatherhood arrangements.

Partially Dedicated System Installation

Warnings for Partial Installation

Warnings regarding local codes, special applications, and weatherhood arrangements.

Fully Dedicated System Installation

Installation Notes

Key installation requirements for the fully dedicated system.

Warnings for Full Installation

Warnings regarding local codes, special applications, and weatherhood arrangements.

Main Control Installation (DXPL03)

Main Control Installation (BC02;03;04)

Installation Steps

Step-by-step guide for mounting and wiring the 99-BC02/03/04 main controls.

Interlocking HRV with HVAC System

Purpose of Interlocking

Ensuring the air handler/furnace blower operates when the HRV is venting.

HRV Additional Controls

Adding Dry Contact Controls

Using jumpers to activate HRV for timers and dry contact controls.

Wired Timer Installation

20;40;60 Minute Timer (99-DET01)

Wiring and setup instructions for the 99-DET01 timer.

Mechanical Timers Installation (99-101)

Wiring and setup instructions for mechanical timers.

Wireless Timer Installation

Wireless 20;40;60 Minute Timer (99-DET02)

Pairing and installation procedures for wireless timers.

Installer High Speed Settings

Adjusting DIP Switches for Speed

Instructions on adjusting DIP switches for selecting high speed settings.

Airflow Balancing Introduction

Importance of Airflow Balancing

Explains the criticality of balancing airflows for HRV efficiency and operation.

Airflow Measuring Gauge

Recommendation of a digital manometer as a suitable instrument for airflow balancing.

Airflow Balancing Kit

Description of the contents of the Airflow Balancing Kit.

Balancing Preparation Steps

Essential steps to perform prior to initiating the air balancing procedure.

Airflow Balancing CFM Calculation

Determining CFM Calculation

Explains how to calculate CFM flow rate using duct cross-section area and velocity.

Balancing Airflows: Pitot Tube Method

Pitot Tube Procedure Steps

Step-by-step guide for using a pitot tube to measure airflow in ducts.

Balancing Airflows: Door Ports Method

Door Port Balancing Procedure

Steps for balancing airflows using door balancing ports and a manometer.

Airflow Charts (RNC88)

Airflow Charts (RNC4-TPD)

Airflow Charts (RNC4-TPD) - Continued

Airflow Charts (RNC4-TPF)

Airflow Charts (RNC4-TPF) - Continued

Airflow Charts (RNC6-ES)

Airflow Charts (RNC6-ES) - Continued

Airflow Charts (RNC5-TPD;TPF)

Airflow Charts (RNC5-TPD;TPF) - Continued

Airflow Charts (RNC6-HEX-TPD;5-HEX-TPF)

Airflow Charts (RNC6-HEX-TPD;5-HEX-TPF) - Continued

Airflow Charts (RNC155 2019)

Airflow Charts (RNC155 2019) - Continued

Airflow Charts (RNC200)

Airflow Charts (RNC205)

Airflow Charts (RNC205) - Continued

Airflow Charts (155 MAX 2019)

Airflow Charts (205 MAX)

Airflow Charts (205 MAX) - Continued

Airflow Charts (267 MAX)

Airflow Charts (267 MAX) - Continued

Troubleshooting Guide

Poor Airflow Issues

Troubleshooting steps for poor HRV airflow, including causes like blocked vents or filters.

Cold Supply Air

Troubleshooting steps for cold supply air, related to grille location or outdoor temperature.

Dehumidistat Malfunction

Steps to check if the dehumidistat is operating correctly or set improperly.

Troubleshooting Guide (Continued)

Frosting Issues

Troubleshooting for HRV and duct frosting, including defrost system checks.

Lifebreath 205 MAX Specifications

General IconGeneral
BrandLifebreath
Model205 MAX
CategoryFan
LanguageEnglish

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