Lifebreath 730 ERV User Manual

35 pages

Questions and Answers:

N
Nicholas DunlapAug 5, 2025
Why are humidity levels too high with my Lifebreath 730 ERV Fan, causing condensation?
- T
  Thomas CastroAug 6, 2025
  High humidity levels and condensation with your Lifebreath Fan can stem from several causes. Ensure your dehumidistat isn't set too high by setting it lower. If you have a hot tub or indoor pool, cover them when not in use, as the ERV may not be sized to handle the moisture load. Modify occupant habits to avoid hanging clothes to dry, storing wood inside, and ensure your clothes dryer is properly vented. Vent the crawl space, placing a vapor barrier on the floor of the crawl space. If condensation forms in spring and fall, try increasing the ERV speed.
J
Joy ThompsonAug 9, 2025
How to fix low humidity levels with my Lifebreath 730 ERV Fan?
- E
  erobbinsAug 10, 2025
  If your Lifebreath Fan is causing humidity levels to be too low, first try decreasing the ERV blower speed. If the issue persists, have a contractor balance ERV airflows. The lifestyle of occupants can also impact humidity.
L
Laura FinleyAug 14, 2025
How to prevent condensation or ice buildup in the insulated duct of my Lifebreath Fan?
- J
  Jennifer BrewerAug 15, 2025
  To prevent condensation or ice buildup in the insulated duct of your Lifebreath Fan, ensure a complete vapor barrier around the insulated duct by taping and sealing all joints. Additionally, tape any holes or tears made in the outer duct covering, ensuring that the vapor barrier is completely sealed.
A
Angela RodriguezAug 18, 2025
How to improve airflow in my Lifebreath 730 ERV?
- S
  stephaniecooperAug 19, 2025
  If you're experiencing poor airflow with your Lifebreath Fan, several factors could be responsible. Start by checking and cleaning the exterior hoods or vents, and remove and clean the filter. Ensure the core is not obstructed by cleaning it. Open any closed or blocked house grilles and adjust dampers if installed. Have an electrician check the power supply voltage. Verify the ductwork installation. Increase the speed of the ERV. If the issue persists, have a contractor balance the ERV.
R
Ronnie RiosAug 23, 2025
What to do if the supply air from my Lifebreath 730 ERV feels cold?
- B
  brandonwalkerAug 23, 2025
  If the supply air from your Lifebreath Fan feels cold, consider the following: ensure supply grilles are located high on the walls or under the baseboards, and if ceiling mounted, use diffusers or grilles to avoid direct airflow onto occupants. If the outdoor temperature is extremely cold, turn down the ERV supply speed or consider using a small duct heater (1 kW) to temper the supply air. Also consider placement of furniture or closed doors that may be restricting the movement of air in the home. If supply air is ducted into furnace return, the furnace fan may need to run continuously to distribute ventilation air comfortably.
M
margaret28Aug 27, 2025
Why is my Lifebreath 730 ERV and/or ducts frosting up?
- D
  Debra RoblesAug 27, 2025
  If your Lifebreath Fan and/or ducts are frosting up, it could be due to a few reasons. Start by having an HVAC contractor balance the ERV airflows. Also, ensure the damper defrost is operating during the self-test, as a malfunction of the ERV defrost system could be the cause.
M
Mr. Anthony ScottAug 31, 2025
What causes excessive vibration in my Lifebreath Fan?
- A
  Andre HopkinsAug 31, 2025
  Excessive vibration in your Lifebreath Fan could be due to dirt on the fan wheels. Have a contractor service the ERV.

Lifebreath 730 ERV Specifications

General

Brand	Lifebreath
Model	730 ERV
Category	Fan
Language	English

Summary

Pre-Installation Safety and Notes

General Safety Precautions

Covers electrical safety, wiring, and operational cautions before installing the ERV unit.

1 Location Notes

2 Ducting the System

Ducting Installation Best Practices

Integrated HVAC System Configuration

7 Stale Air Return and Fresh Air Supply System

Stale Air Return System Design

Fresh Air Supply System Guidelines

9 Electrical Connections

Electrical Connection Safety Warning

Crucial warning regarding power polarity verification and proper grounding.

Electrical System Caution

Note on measuring amp draw for each motor to ensure it's within rating.

10 Functions and Controls

Basic Functions and Microprocessor Board

Covers speed control, jumper settings, and the microprocessor board layout.

11 Ventilation Wall Control (99-BC02)

99-BC02 Operation and Features

Details operation, speed settings, and humidity control for the 99-BC02 wall control.

99-BC02 Important Operational Notes

16 Ventilation Wall Control (99-BC03)

99-BC03 Operation and Features

Covers operation of the 99-BC03 control, including modes and humidity settings.

99-BC03 Important Operational Notes

17 Ventilation Wall Control (99-BC04)

99-BC04 Operation and Features

Explains operation of the 99-BC04 control, including speed and 20/40 mode.

99-BC04 Important Operational Notes

9 Main Wall Control Installation

Wall Control Mounting Procedure

Step-by-step guide for installing the wall control unit on a flush or surface mount.

9 3-Speed Control (99-500)

99-500 Operation and Installation

Details operation of the 3-speed control and its wiring installation.

99-500 Compatibility and Wiring Notes

10 Wireless Timer (99-DET02)

99-DET02 Timer Operation

Explains the operation of the 99-DET02 wireless timer.

10 Wireless Timer (99-DET02) Setup

99-DET02 Timer Pairing Procedure

Step-by-step guide for pairing the 99-DET02 wireless timer.

99-DET02 Timer Installation

10 Wireless Repeater (99-RX02)

99-RX02 Repeater Functionality and Indicators

Describes the repeater's role and LED indicators.

99-RX02 Repeater Pairing Procedure

Steps for pairing the 99-RX02 repeater.

10 Timer (99-DET01) Operation and Installation

99-DET01 Timer Operation and Lockout Mode

Details the operation of the 99-DET01 timer and lockout mode.

99-DET01 Timer Wiring Installation

11 Aircom Relays and Interlocking

Furnace and Air Handler Interlocking

Explains how to use relays to interlock the ERV with a furnace or air handler.

Interlocking Installation Caution

12 Fan Defrost System

Defrost Cycle Operation

Defrost Time Adjustment (DIP Switch #8)

Details how to adjust defrost time using DIP switch #8.

Defrost Mode Settings

Defrost Control Caution

13 Balancing Airflows

Importance of Balanced Airflows

Explains why balanced airflows are critical for ERV performance and avoiding issues.

Pre-Balancing Checklist

Field Balancing Procedure (Pitot Tube)

Detailed method for balancing airflow using a Pitot tube and manometer.

Airflow Pressure Considerations

14 Filter and Duct Maintenance

ERV Filter Cleaning and Service Frequency

15 Reverse ERV Installation

Electrical Box Removal Procedure

Electrical Box Reinstallation Procedure

16 Troubleshooting: Airflow and Temperature

Troubleshooting Poor Airflows

Addresses common causes and solutions for low or restricted airflow in the ERV.

Troubleshooting Cold Supply Air

17 Troubleshooting: Humidity and Vibration

Troubleshooting High Humidity and Condensation

Solutions for high indoor humidity, window condensation, and moisture issues.

Troubleshooting Low Humidity

Troubleshooting ERV Frosting and Duct Condensation

Solutions for ERV frosting and condensation in insulated ducts.

Troubleshooting Excessive Vibration

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