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Lifebreath 267 MAX - User Manual

Lifebreath 267 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

  • J
    Jordan ByrdAug 12, 2025
    How to improve poor airflow in my Lifebreath Fan?
    • J
      Jeffery ElliottAug 13, 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.
  • A
    Amber ChavezAug 16, 2025
    What to do if humidity levels are too high with Lifebreath 267 MAX?
    • C
      Casey FloresAug 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.
  • J
    Jason NguyenAug 20, 2025
    What to do if the dehumidistat is not operating on my Lifebreath 267 MAX Fan?
    • J
      Joshua ReedAug 20, 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.
  • L
    Laurie RodriguezAug 23, 2025
    Why does the supply air from my Lifebreath Fan feel cold?
    • D
      Debbie SteinAug 23, 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.
  • N
    Nathan ArnoldAug 27, 2025
    How to improve poor airflows in Lifebreath Heating System?
    • C
      Christopher RamirezAug 27, 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.
  • S
    Sandy MillerAug 31, 2025
    Why are humidity levels too high with Lifebreath Heating System?
    • N
      Nathaniel MoralesAug 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.
  • A
    Alison HarmonSep 3, 2025
    Why does supply air feel cold from Lifebreath Heating System?
    • S
      Stacey CaseSep 4, 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.
  • N
    normansethSep 7, 2025
    What to do if dehumidistat is not operating on Lifebreath Heating System?
    • J
      johnwatkinsSep 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

Highlights critical electrical safety steps, including power application, code compliance, and grounding.

Installation Considerations

Advises on system operation compatibility, condensate drainage, and level installation.

Critical Safety Warnings

Details essential safety procedures before servicing and installation to prevent injury or death.

Simplified Installation Method

Simplified Installation Notes

Key requirements for the simplified installation, including balancing and blower operation.

Simplified Installation Warnings

Important warnings regarding local codes, special applications, and weatherhood arrangements.

Partially Dedicated System Installation

Partially Dedicated Installation Notes

Key requirements for partially dedicated installations, including balancing and blower operation.

Partially Dedicated Installation Warnings

Important warnings regarding local codes, special applications, and weatherhood arrangements.

Fully Dedicated System Installation

Fully Dedicated Installation Notes

Key requirements for fully dedicated installations, including balancing and external exhaust systems.

Fully Dedicated Installation Warnings

Important warnings regarding local codes, special applications, and weatherhood arrangements.

Unit Mounting Procedures

RNC4-TPD;TPF Mounting Instructions

Instructions for mounting the RNC4-TPD and RNC4-TPF models using specific tabs and hooks.

RNC88 Mounting Instructions

Instructions for mounting the RNC88 model using standard hardware.

Hanging Straps Installation

Hanging Strap Installation Guide

Step-by-step guide for attaching hanging straps for unit installation.

Hanging Strap Installation Precautions

Important notes on washer size, lifting technique, and ensuring the unit is mounted level.

Condensate Drain Connection

Drain Connection Installation Guide

Detailed instructions for connecting the condensate drain line, including P-trap construction.

Drain Connection Installation Precautions

Cautions regarding temperature, slope, and the need for a secondary drain pan.

Weather Hoods Installation

Weather Hood Duct Sealing and Material Notes

Guidelines for sealing ducts to weather hoods and using appropriate ducting materials.

Weather Hood Location and Safety Requirements

Critical requirements for locating intake and exhaust weather hoods to ensure safety and performance.

Main Control Installation (99-DXPL03)

99-DXPL03 Surface Mount Installation

Detailed steps for surface mounting the 99-DXPL03 main control unit on a wall.

Main Control Installation (99-BC02;3;4)

BC02;03;04 Installation Methods

Detailed steps for installing BC02, BC03, or BC04 controls on a flush or surface mount.

HRV Interlocking with HVAC System

HRV Interlocking Wiring TB04

Wiring diagram for interlocking the HRV with a furnace using TB04 terminal block.

HRV Interlocking Wiring TB01

Wiring diagram for interlocking the HRV with a furnace using TB01 terminal block.

Additional HRV Controls

Setting HRV Standby Mode

Instructions on how to set the HRV to standby mode using the main control or jumpers.

HRV Timer Operations

Wireless Timer Pairing Process

Steps for pairing the 99-DET02 wireless timer with the HRV main control.

Wireless Repeater Setup

Repeater Pairing Procedure

Steps for pairing the repeater with the HRV main control and timers.

Installer Selectable Speed Settings

Airflow Balancing Procedures

Airflow Balancing Preparation Steps

Pre-balancing steps including sealing ductwork and opening dampers.

Airflow Balancing with Pitot Tube

Pitot Tube Airflow Balancing Steps

Detailed procedure for measuring airflow using a pitot tube and a digital manometer.

Airflow Balancing Using Door Ports

Door Port Airflow Balancing Procedure

Steps for measuring stale and fresh airflows using door balancing ports and a manometer.

Airflow Charts: RNC88

Airflow Charts: RNC4-TPD

Airflow Charts: RNC4-TPF

Airflow Charts: RNC6-ES

Airflow Charts: RNC5-TPD;TPF

Airflow Charts: RNC6-HEX-TPD;5-HEX-TPF

Airflow Charts: RNC155 2019

Airflow Charts: RNC200

Airflow Charts: RNC205

Airflow Charts: 155 MAX 2019

Airflow Charts: 205 MAX

Airflow Charts: 267 MAX

Troubleshooting Common Issues

Troubleshooting Poor Airflows

Addresses issues like blocked hoods, plugged filters, closed dampers, and improper balancing.

Troubleshooting Cold Supply Air

Solutions for cold supply air, including grille placement and speed adjustments.

Troubleshooting Dehumidistat Issues

Steps to diagnose and fix issues with the dehumidistat not operating correctly.

Troubleshooting High Humidity and Condensation

Strategies for managing high humidity and window condensation, including covering pools.

Troubleshooting Low Humidity Levels

Methods to address low humidity levels, such as adjusting the dehumidistat or using humidifiers.

Troubleshooting HRV and Duct Frosting

Troubleshooting frost buildup on the HRV or ducts, including defrost system checks.

Troubleshooting Duct Condensation and Ice

Addresses condensation or ice in insulated ducts due to vapor barrier or duct tears.

Troubleshooting Excess Water in HRV

Solutions for excess water in the HRV bottom, checking drain pans and lines.

Troubleshooting Excessive Vibration

Guidance for resolving excessive vibration issues, suggesting contractor service.

Lifebreath 267 MAX Specifications

General IconGeneral
BrandLifebreath
Model267 MAX
CategoryFan
LanguageEnglish

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