Fantech VHR 1405R User Manual

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SHR / VHR Series

Heat recovery ventilators

fantech

Installation Manual

Item #: 405190

Rev Date: 091514

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Your ventilation system should be installed in conformance with the appropriate provincial requirements or, in the absence of

such requirements, with the current edition of the National Building Code, and / or ASHRAE’s “Good Engineering Practices”.

Fantech reserves the right to modify, at any time and without notice, any or all of its products’ features, designs,

components and specifications to maintain their technological leadership position.

Please visit our website www.fantech.net for more detailed technical information.

United States

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Table of Contents

Questions and Answers:

A
Ashley TaylorAug 4, 2025
What to do if Fantech VHR 1405R has poor air flows?
- M
  Mackenzie FloresAug 4, 2025
  If your Fantech Fan has poor air flows, you can try the following: * Clean exterior hoods or vents if the 1/4" (6mm) mesh on the outside hoods is plugged. * Remove and clean the filter if filters are plugged. * Remove and clean the core if it is obstructed. * Check and open indoor grilles if they are closed or blocked. Also, ensure that an electrician checks the supply voltage if there is an inadequate power supply at the site and check duct installation if ductwork is restricting airflow. Increase the speed of the HRV if there is an improper speed control setting. If the HRV airflow is improperly balanced or ducting has fallen down or been disconnected from the HRV, have a contractor address these issues.
S
Shelley FoxAug 12, 2025
Why is my Fantech VHR 1405R Fan supply air feels cold?
- Y
  ygrossAug 12, 2025
  If the supply air from your Fantech Fan feels cold, it could be due to the following reasons: * The location of supply grilles may be causing airflow to irritate occupants. Relocate the grilles high on the walls or under the baseboards, and install ceiling-mounted diffusers or grilles to avoid directly spilling supply air on occupants. You can also turn down the HRV supply speed. A small duct heater (1kW) could be used to temper the supply air. Ensure that furniture placement or closed doors are not restricting air movement. * If the outdoor temperature is extremely cold, and supply air is ducted into the furnace return, the furnace fan may need to run continuously to distribute ventilation air comfortably.
J
jamiemorenoAug 16, 2025
What to do if Fantech VHR 1405R has persistent condensation on window?
- V
  vhollandAug 17, 2025
  If you notice persistent condensation on windows when using your Fantech Fan, consider the following: * Reduce the desired level of humidity, if there is an improper adjustment of the dehumidistat control, and combine this step with the use of continuous exchange mode. * Have a contractor balance the HRV if the HRV is out of balance. * Open curtains or blinds to improve air circulation near windows.
W
William Mitchell DDSAug 21, 2025
How to fix HRV and/or Ducts frosting up in Fantech Fan?
- R
  Renee LambAug 21, 2025
  If your Fantech Fan's HRV and/or ducts are frosting up, consider these solutions: * Have an HVAC contractor balance the HRV airflows if the HRV air flows are improperly balanced. * Note that minimal frost build-up is expected on cores before the unit initiates defrost cycle functions, if there is a malfunction of the HRV defrost system.
P
perezsarahAug 25, 2025
What to do if Fantech VHR 1405R Fan air is too dry?
- M
  marierodriguezAug 26, 2025
  If the air is too dry when using your Fantech Fan, increase the desired level of humidity if the dehumidistat control is set too low. Also, change the ventilation mode from continuous mode to standby.
J
Jon OlsonAug 29, 2025
How to fix Condensation or Ice Build Up in Insulated Duct to the Outside in Fantech VHR 1405R Fan?
- S
  Sarah RobertsAug 29, 2025
  To address condensation or ice build-up in the insulated duct to the outside of your Fantech Fan, tape and seal all joints if there is an incomplete vapor barrier around the insulated duct. Also, tape any holes or tears made in the outer duct covering and ensure that the vapor barrier is completely sealed if there is a hole or tear in the outer duct covering.

Fantech VHR 1405R Specifications

General

Model	VHR 1405R
Speed Settings	3
Frequency	50Hz
Oscillation	Yes
Tilt Adjustment	Yes
Material	Plastic
Blade Size	14 inches
Voltage	220V

Summary

Determining Your Airflow Requirement

Room Count Method

Calculates required ventilation based on room types and quantity.

ASHRAE Method

Determines ventilation rates based on floor area and number of bedrooms.

Installation Examples

Fully Dedicated System

Ideal for new construction, supplying fresh air to living areas.

Partially Dedicated System

Connects fresh air to furnace return, conditioning air before distribution.

Simplified Installation - Option 1

Connects HRV supply and exhaust to furnace cold air return.

Simplified Installation - Option 2

Connects HRV supply to furnace supply and exhaust to cold air return.

Exterior Ducting Installation

Weatherhood Location

Guidelines for positioning intake and exhaust weatherhoods for optimal performance.

Installing Ducting to Weatherhoods

Procedures for connecting flexible insulated ducting to weatherhoods and HRV.

Steps for Hood Installation

Step-by-step guide for mounting exterior hoods and sealing connections.

Interior Ducting Installation

Installing Ducting to HRV

Instructions for connecting flexible or solid ducting to the HRV unit.

Supply Air Grilles Location

Recommendations for placing supply grilles in homes without or with forced air furnaces.

Exhaust Air Grilles Location

Guidance on selecting locations for exhaust grilles to capture poor air quality.

Ducting Fifth Port Units

Explains the use of the fifth port for defrost and recirculation modes.

Ducting Installation Examples

Fully Dedicated System Example

Diagram illustrating a fully dedicated system setup.

Partially Dedicated System Example

Diagram showing a partially dedicated system connection.

Simplified Installation - Option 1 Example

Diagram of simplified installation option 1.

Simplified Installation - Option 2 Example

Diagram of simplified installation option 2.

HRV Installation

Location

Recommended placement for the HRV unit in a conditioned space.

Mounting

Instructions and illustrations for securely hanging the HRV unit.

Installing Drain Line

Start Up Procedure

Steps to initiate and operate the HRV unit after installation.

Airflow Balancing

Importance and basic concept of balancing supply and return airflows.

Airflow Balancing

Adjusting Airflows

How to adjust the integrated damper for desired airflow in the fresh air duct.

Measuring Airflow

Method for measuring airflow velocity using a station/grid in ductwork.

Low Voltage Control Systems

Central Controls

Overview of main control options like ECO-Touch, EDF7, and EDF1/1R.

Auxiliary Controls

Description of paired auxiliary controls such as RTS2, RTS3, and MDEH1.

Electrical Connections

Specific Model Connections

Wiring diagrams for SHR1504, 1505R, 2004, 2005R and VHR1404, 1505R, 2004, 2005R.

SHR3005R Connections

Wiring diagram specific to the SHR3005R model.

SHR3205RD Connections

Wiring diagram for the SHR3205RD model.

Furnace Interlock Wiring

How to connect the HRV to a furnace, including standard and alternate methods.

Troubleshooting

HRV Maintenance Chart

Limited Warranty

Details the warranty coverage for parts, fans, and the aluminum core.

Notes

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