Fantech VHR 1405 R User Manual

SHR 1504 • SHR 1505 R(D) • SHR 2004 • SHR 2005 R(D) • SHR 3005 R • SHR 3205RD
VHR 1404 • VHR 1405 R • VHR 2004 • VHR 2005 R • VHR 704
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Heat Recovery Ventilator Operation Manual
For use with Models

Fantech VHR 1405 R Specifications

General

Brand	Fantech
Model	VHR 1405 R
Category	Fan
Language	English

Summary

Introduction to HRVs

What are Heat Recovery Ventilators?

Definition and basic function of HRVs.

How Do Heat Recovery Ventilators Work?

Explanation of the heat transfer process in HRVs.

Fantech Model Number System

Explains how Fantech model numbers are structured.

Port Configuration Options

Details on 4-port vs. 5-port HRV configurations.

Seasonal Operation Guidelines

Winter Operation & Humidity Control

Managing humidity and condensation in winter.

Spring Operation & Temperature Control

Adjusting settings for moderate spring conditions.

Summer Operation & Humidity Management

Cooling and dehumidification strategies for summer.

Fall Operation & Condensation Issues

Dealing with humidity and temperature changes in fall.

HRV Operational Modes

Continuous Ventilation Mode Explained

Detailed operation of the continuous mode.

Intermittent and Standby Modes

Functionality of intermittent and standby modes.

Defrost Mode for 5-Port Models

How the defrost cycle works on 5-port models.

Defrost Mode for 4-Port Models

How the defrost cycle works on 4-port models.

Optional Remote Controls and Features

Dehumidistat Controls (MDEH1, MDEH2)

Controls for managing indoor humidity levels.

Timer Controls (RTS2, RTS3)

Timers for activating high-speed ventilation.

Multi-Mode Controls (EDF1, EDF5)

Controls offering multiple operational modes.

EDF5 Multi-Function Wall Control

Comprehensive wall control for various HRV functions.

Routine Maintenance Procedures

Filter Maintenance and Replacement

Instructions for checking, cleaning, and replacing filters.

Heat Recovery Core Cleaning

Guidelines for cleaning the heat recovery core.

Unit and Component Checks

Maintenance for fans, unit interior, drain lines, and hoods.

Troubleshooting Common Issues

Humidity Level Problems

Solutions for air being too dry or too humid.

Window Condensation and Airflow

Resolving window condensation and poor airflow.

Supply Air and Frosting Issues

Diagnosing cold supply air and frosting.

Control Board LED Indicators

Understanding green LED light codes.

HRV Maintenance Schedule and Warranty

Scheduled Maintenance Tasks

Tasks and frequencies for regular HRV upkeep.

Limited Warranty Information

Details on the product's limited warranty coverage.

Pre-Installation Safety and Warnings

Critical Installation Cautions

Important warnings before starting unit installation.

Combustion Appliance Interaction

Preventing backdrafting with combustion equipment.

Determining Airflow Requirements

Calculating Airflow by House Volume

Step-by-step calculation using cubic volume.

Room-by-Room Airflow Calculation

Method to determine airflow based on room type and usage.

Technical Data: SHR Models

SHR Model Dimensions and Airflow

Physical sizes and airflow path for SHR units.

SHR Fan Performance Curves

Graphs showing fan performance vs. static pressure.

SHR Performance Effectiveness and Power

Data on sensible effectiveness and power usage.

Technical Data: VHR Models

VHR Model Dimensions and Airflow

Physical sizes and airflow path for VHR units.

VHR Fan Performance Curves

Graphs showing fan performance vs. static pressure.

VHR Performance Effectiveness and Power

Data on sensible effectiveness and power usage.

HRV Installation Basics

Installation Location Considerations

Advice on selecting the optimal installation site.

Unit Mounting Procedures

Step-by-step guide for securely mounting the HRV.

Condensate Drain Line Setup

How to properly install the drain line for condensation.

Exterior Ducting Installation

Weatherhood Placement Guidelines

Criteria for locating intake and exhaust hoods.

Connecting Ducts to Weatherhoods

Procedures for attaching flexible ducting to exterior hoods.

Interior Ducting Installation

Interior Ductwork Best Practices

Tips for efficient and effective interior duct routing.

Supply and Exhaust Grille Placement

Recommendations for locating air grilles for optimal airflow.

Ducting for 5th Port Units

Specific instructions for ducting units with a fifth port.

Installation Examples

Fully Dedicated System Installation

Example of a fully dedicated HRV system setup.

Installation Examples (Continued)

Partially Dedicated System (Supply to Furnace Return)

Example of connecting HRV supply to furnace cold air return.

Simplified Installation Examples

Option 1: Return/Return Method

Example of connecting HRV supply/exhaust to furnace return.

Simplified Installation Examples (Continued)

Option 2: Supply/Return Method

Example of connecting HRV supply/exhaust to furnace supply/return.

Start-Up and Airflow Balancing

Initial Unit Start-Up Procedure

Steps for powering on and initial unit self-diagnostic.

Importance of Airflow Balancing

Explains why balancing airflow is critical for performance and safety.

Airflow Balancing Procedures

Adjusting Integrated Airflow Dampers

Instructions for using the built-in damper to control airflow.

Measuring Airflow with Station Method

Detailed steps for measuring airflow using a station or grid.

Low Voltage Control System Details

EDF Series Controls (EDF1, EDF2, EDF1R, EDF5)

Functions and operation of EDF series controls.

Dehumidistat Controls (MDEH1, MDEH2)

Features and operation of MDEH dehumidistat controls.

Timer Controls (RTS2, RTS3)

Operation of RTS2 and RTS3 timer controls.

Electrical Connections

Wiring for EDF and Timer Controls

Diagrams showing electrical connections for EDF and timer controls.

Wiring for Dehumidistat Controls

Diagrams illustrating connections for dehumidistat controls.

Internal Wiring Diagram

Complete Unit Wiring Schematic

Detailed schematic of internal and external electrical connections.

Furnace Electrical Connections

Standard Furnace Control Wiring

Connecting HRV to furnace standard accessory contacts.

Alternative Furnace Control Wiring

Connecting HRV to furnace alternative accessory contacts.

Furnace Cooling System Interlock

Wiring for connecting to a furnace with cooling.