Guardian Plus GSHH3K - User Manual

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RESIDENTIAL USE ONLY

INSTALLER: LEAVE THIS MANUAL WITH CONSUMER.

CONSUMER: USE AND CARE INFORMATION

ON PAGES 31 and 35 to 38.

www.GuardianPlusAirSystems.com

www.Broan-NuTone.com 04326 rev 1.

Broan-NuTone LLC 99043105

HEPA Filtration,

Fresh Air and Heat

Recovery*

GSHH3K

*Patents pending

VB0052

INSTALLATION INSTRUCTIONS

AND USER MANUAL

HEPA

Filtration*

GSFH1K

HEPA Filtration and

Fresh Air

Ventilation*

GSVH1K

Table of Contents

Other manuals for Guardian Plus GSHH3K

Installation And Instruction Manual36 pages

Questions and Answers

J
jschroederAug 7, 2025
What to do if my Guardian Plus Air Cleaner unit does not start at Normal or Boost position?
- D
  Debbie CastilloAug 7, 2025
  If your Guardian Plus Air Cleaner doesn't start, first check the breaker or fuse in the main distribution panel. Then, verify that there is 120V at the electrical outlet. Ensure that the unit's main switch is properly set to either the Normal or Boost position. If a wall control is connected, disconnect the control wire from the unit and then ensure the main switch is properly set.
C
Carly TurnerAug 13, 2025
Why is my Guardian Plus Air Cleaner unit not operating as per the selected mode?
- J
  Jaime RandallAug 13, 2025
  If your Guardian Plus Air Cleaner isn't operating in the selected mode, check if the unit's main switch is in the “Normal/Remote” position. Also, inspect the wall control wiring.
D
David ClineAug 19, 2025
What to do if my Guardian Plus GSHH3K Air Cleaner unit does not run at Normal speed, but runs at Boost?
- J
  Jerry BurtonAug 20, 2025
  If your Guardian Plus Air Cleaner runs at Boost but not Normal speed, disconnect the control wire from the unit if a wall control is being used. If the unit then runs at Normal speed, inspect the control wiring and wall control connections.
E
Elizabeth SmithAug 26, 2025
Why wall control indicators of Guardian Plus GSHH3K do not work properly or not at all?
- W
  woodsleahAug 26, 2025
  If the wall control indicators for your Guardian Plus Air Cleaner aren't working correctly, check the wall control wiring.
R
Randall EllisonAug 31, 2025
What to do if on ACCGSC3 wall control only, one or two light indicators of Guardian Plus GSHH3K are flashing every second?
- D
  David HernandezAug 31, 2025
  If one or two light indicators are flashing every second on your ACCGSC3 wall control, first check if the unit's main switch is in the “Normal/Remote” position. If it is, then check the wall control wiring.

Summary

About This Manual

Unit Overview and Safety

Key Safety Warnings

Important safety warnings and caution statements for unit operation and installation.

Technical Specifications

Before Starting Checklist

Steps to perform before starting installation, including box inspection and damage checks.

Unit Dimensions

Detailed measurements for different Guardian Plus unit models.

Mounting and Servicing Considerations

Details required clearances and considerations for unit installation and maintenance.

Installation Planning

Planning the Ductwork

Guidelines and table for planning flexible duct lengths and connections.

Typical Installation Methods

Stand Alone Installation

Describes standalone installation methods for homes without central air systems.

Central Draw Point Installation

Details connecting the unit to a forced air system via a central draw point.

Return-to-Return Installation

Explains the return-to-return connection method for forced air systems.

Installing the Unit

Tools and Materials Required

Lists all necessary tools and materials required for unit installation.

Unit Mounting and Port Installation

Instructions for mounting the unit with ports, isolator pads, and suspension.

Ductwork and Register Installation

Guide for connecting 8-inch ducts and registers for various installation types.

Insulated Duct Installation

Procedure for connecting insulated flexible ducts to Tandem transitions and unit ports.

Exterior Hood Installation

Instructions for assembling, installing, and locating the AirDuo™ exterior hood.

Two Exterior Hoods Installation

Assembly and installation of AirDuo™ and single exterior hoods.

Connecting the Drain

Detailed steps for connecting the drain line for the GSHH3K model.

Low Temperature Applications

Guidance for protecting the unit and drain line from freezing in low ambient temperatures.

Controls and Operation

Main Switch and Wall Controllers

Explanation of the main switch positions and available wall controller models.

Wall Controller Installation

Step-by-step instructions for installing the wall controller and wiring connections.

Operating the Controllers

How to operate the ACCGSC1 and ACCGSC3 controllers and reset maintenance indicators.

Maintenance Procedures

Semi-Annual Maintenance

Procedure for essential semi-annual maintenance tasks, including filter cleaning/replacement.

Annual Maintenance and Reset

Instructions for annual maintenance, filter replacement, and master reset procedures.

Troubleshooting

Warranty Information

Guardian Plus GSHH3K Specifications

General

Pre-Filter	Yes
Activated Carbon Filter	Yes
Auto Mode	Yes
Sleep Mode	Yes
Filter Type	HEPA
Timer	Yes
Model	Guardian Plus GSHH3K

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