Fantech VHR 2005 R User Manual (English)

Questions and Answers:

D
Diana UnderwoodSep 7, 2025
Why is my Fantech VHR 2005 R Fan air too humid?
- K
  krystalhensonSep 7, 2025
  Several factors can cause your Fantech Fan to produce air that is too humid. First, reduce the desired level of humidity if the dehumidistat control is set too high and combine this with the use of continuous exchange mode. If there has been a sudden change in temperature, wait until the outside temperature stabilizes. Ensure that you store a majority of your wood outside. Check that the dryer vent is exhausting outside and that there is good air circulation near windows (open curtains or blinds). If you have a well-sealed basement door, open it or install a grill on the door. Finally, a failed damper system may be stuck in recirculation mode, so have a contractor verify the damper system.
R
rhowardSep 9, 2025
What to do if Fantech VHR 2005 R has persistent condensation on window?
- H
  Heather LucasSep 9, 2025
  If you notice persistent condensation on your window when using the Fantech Fan, it could be due to a few reasons. Try reducing the desired level of humidity, combining this step with the use of continuous exchange mode. Also, ensure good air circulation near windows by opening curtains or blinds. If the issue continues, have a contractor balance the HRV.
W
Wendy MitchellSep 12, 2025
Why is my Fantech Fan supply air feels cold?
- N
  nathanrodriguezSep 12, 2025
  If the supply air from your Fantech Fan feels cold, it could be due to the location of the supply grilles. Locate the grilles high on the walls or under the baseboards, install ceiling-mounted diffuser or grilles so as not to directly spill the supply air on the occupant. You can also turn down the HRV supply speed. If the outdoor temperature is extremely cold, and the supply air is ducted into the furnace return, the furnace fan may need to run continuously to distribute ventilation air comfortably.
D
Daniel WoodsSep 12, 2025
What to do if Fantech Fan HRV and/or Ducts frosting up?
- E
  Eric DavisSep 13, 2025
  If your Fantech Fan's HRV and/or ducts are frosting up, it could be due to improperly balanced HRV air flows, have an HVAC contractor balance the HRV airflow. Note that minimal frost build-up is expected on cores before unit initiates defrost cycle functions.
T
Timothy JonesSep 14, 2025
How to fix condensation or ice build up in insulated duct to the outside of Fantech Fan?
- D
  David CoxSep 15, 2025
  If you notice condensation or ice build-up in the insulated duct to the outside of your Fantech Fan, it might be caused by an incomplete vapor barrier around the insulated duct. In this case, tape and seal all joints. Another cause can be a hole or tear in the outer duct covering, tape any holes or tears made in the outer duct covering and ensure that the vapor barrier is completely sealed.

Fantech VHR 2005 R Specifications

General

Brand	Fantech
Model	VHR 2005 R
Category	Fan
Language	English

Summary

Understanding Heat Recovery Ventilators (HRVs)

What are HRVs?

Definition and basic function of Heat Recovery Ventilators.

How HRVs Work

Explanation of the heat recovery process and unit operation.

Fantech Model Numbering

Guide to understanding Fantech HRV model nomenclature.

HRV Port Configurations

Overview of different port configurations available in HRVs.

Operation and Modes of HRVs

Seasonal Operation Considerations

Guidance on operating HRVs during different seasons (Winter, Spring, Summer, Fall).

Continuous Ventilation Mode

Details on operating the HRV for constant air exchange.

Intermittent/Standby Mode

Explanation of standby and intermittent operation for specific HRV models.

Defrost Modes

Description of defrost cycles for 5-port and 4-port HRV models.

Optional Remote Controls

MDEH1 Dehumidistat Control

Wall-mount control for indoor humidity monitoring and adjustment.

MDEH2 Dehumidistat Control

Enhanced wall-mount control with off/on and humidity features.

RTS3 Boost Timer

Timer control for activating high-speed ventilation for set periods.

EDF1/EDF1R Timer Controls

Simple controls for timed or continuous operation modes.

RTS2 Remote Timer

Timer control for short-duration high-speed ventilation boosts.

EDF5 Multi-Function Wall Control

Comprehensive control for humidity, speed, and cycle settings.

HRV Maintenance and Care

Filter Maintenance

Instructions for checking, cleaning, and replacing air filters.

Heat Recovery Core Cleaning

Procedure for cleaning the heat recovery core.

Unit, Fan, and Drain Maintenance

Guidelines for cleaning the unit, fan, and drain system.

Outside Hoods and Ductwork Inspection

Recommendations for checking and maintaining exterior components.

Scheduled Maintenance Tasks

Table outlining required maintenance and recommended frequencies.

Product Limited Warranty Details

Information regarding the HRV's warranty terms and conditions.

Troubleshooting Guide

Common Airflow and Humidity Issues

Solutions for problems related to air dryness, humidity, and flow.

Condensation, Frosting, and Duct Issues

Troubleshooting for condensation, ice build-up, and duct integrity.

Control Board Error Indicators

Understanding LED light codes on the control board for diagnostics.

Determining Airflow Requirements

Calculating Required Airflow

Method for calculating the necessary airflow for whole-house ventilation.

Alternate Airflow Calculation Method

Room-by-room method for determining ventilation airflow rates.

Technical Specifications and Performance Data

SHR Model Dimensions and Airflow

Physical dimensions and airflow path for SHR series.

SHR Series Performance Data

Sensible effectiveness and power consumption for SHR models.

VHR Model Dimensions and Airflow

Physical dimensions and airflow path for VHR series.

VHR Series Performance Data

Sensible effectiveness and power consumption for VHR models.

HRV Installation Procedures

Selecting the Installation Location

Guidelines for choosing an appropriate location for the HRV unit.

Unit Mounting and Drain Line Setup

Steps for physically mounting the HRV and installing the condensate drain.

Exterior Ducting Installation

Weatherhood Placement and Duct Connection

Instructions for locating and connecting exterior air intake/exhaust hoods.

Interior Ducting Installation

General Ducting Tips and Grille Placement

Best practices for interior ductwork and grille positioning.

Ducting for 5th Port Units

Specific guidance for connecting the fifth port on certain HRV models.

HRV Installation Examples

Fully Dedicated System Installation

Diagram and notes for a recommended new construction installation.

Partially Dedicated System Installation

Example of connecting the HRV to a furnace's cold air return.

Simplified Installation - Option 1

Diagram for connecting HRV supply/exhaust to furnace return.

Simplified Installation - Option 2

Diagram for connecting HRV to furnace return and supply sides.

Startup and Airflow Balancing

Unit Startup Procedure

Steps for initial power-up and unit self-diagnostic.

Airflow Balancing Principles

Importance and purpose of balancing supply and return airflows.

Adjusting and Measuring Airflow

Methods for adjusting dampers and measuring airflow velocity.

Low Voltage Control System Options

EDF Series Timer Controls

Controls for timed operation, recirculation, and continuous modes.

MDEH Series Dehumidistats

Controls for monitoring and managing indoor humidity levels.

RTS Series Timers

Controls for activating high-speed ventilation for specific durations.

Electrical Connections and Wiring Diagrams

HRV Unit Wiring Diagram

Overview of internal wiring connections for the HRV unit.

Accessory Control Wiring

Diagrams for connecting various low-voltage accessory controls.

Furnace and Cooling System Interlock

Wiring configurations for connecting the HRV to HVAC systems.

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22 pages

Fantech VHR 2005 R User Manual

Table of Contents

Questions and Answers:

Fantech VHR 2005 R Specifications

Summary

Understanding Heat Recovery Ventilators (HRVs)

What are HRVs?

How HRVs Work

Fantech Model Numbering

HRV Port Configurations

Operation and Modes of HRVs

Seasonal Operation Considerations

Continuous Ventilation Mode

Intermittent/Standby Mode

Defrost Modes

Optional Remote Controls

MDEH1 Dehumidistat Control

MDEH2 Dehumidistat Control

RTS3 Boost Timer

EDF1/EDF1R Timer Controls

RTS2 Remote Timer

EDF5 Multi-Function Wall Control

HRV Maintenance and Care

Filter Maintenance

Heat Recovery Core Cleaning

Unit, Fan, and Drain Maintenance

Outside Hoods and Ductwork Inspection

Scheduled Maintenance Tasks

Product Limited Warranty Details

Troubleshooting Guide

Common Airflow and Humidity Issues

Condensation, Frosting, and Duct Issues

Control Board Error Indicators

Determining Airflow Requirements

Calculating Required Airflow

Alternate Airflow Calculation Method

Technical Specifications and Performance Data

SHR Model Dimensions and Airflow

SHR Series Performance Data

VHR Model Dimensions and Airflow

VHR Series Performance Data

HRV Installation Procedures

Selecting the Installation Location

Unit Mounting and Drain Line Setup

Exterior Ducting Installation

Weatherhood Placement and Duct Connection

Interior Ducting Installation

General Ducting Tips and Grille Placement

Ducting for 5th Port Units

HRV Installation Examples

Fully Dedicated System Installation

Partially Dedicated System Installation

Simplified Installation - Option 1

Simplified Installation - Option 2

Startup and Airflow Balancing

Unit Startup Procedure

Airflow Balancing Principles

Adjusting and Measuring Airflow

Low Voltage Control System Options

EDF Series Timer Controls

MDEH Series Dehumidistats

RTS Series Timers

Electrical Connections and Wiring Diagrams

HRV Unit Wiring Diagram

Accessory Control Wiring

Furnace and Cooling System Interlock

Related product manuals