IBC AHU 800 User Manual (English)

Other manuals for IBC AHU 800

Questions and Answers:

ameltonAug 20, 2025

Why is the IBC AHU 800 pump not energized?

A
Ashley MontesAug 20, 2025
The pump might not be energized for several reasons. First, in the IBCconnect app, under Advanced Settings, ensure that Pump Enabled is set to "on". Also, in Basic Settings, confirm that Heat Mode is not set to "Heat Pump", as the AHU pump is not energized during Stage 1 heat pump heating to prevent interference with circulation. It will be energized at Stage 2 call for heat. Finally, check the AHU board for a blown 10A pump fuse.

Janice RayAug 22, 2025

What to do if my IBC AHU 800 Air Handlers thermostat shows a fault?

S
Sarah BrownAug 22, 2025
If your thermostat is showing a fault, it could be due to simultaneous heating and cooling calls. Ensure that the heating and cooling leads from the Nest thermostat are not crossed. Also, there is a known issue with some thermostat models over 3 years old where the backing plate allows a short, signaling an unintended call for cooling.

Brand	IBC
Model	AHU 800
Category	Air Handlers
Language	English

Brand

IBC

Model

AHU 800

Safety Information

Manual Safety Markings

Explains danger, warning, and caution symbols used in the manual.

Important Safety Instructions

Crucial guidelines for safe installation, operation, and maintenance of the appliance.

Specifications

Heating Capacity Ratings

Provides BTU/hr heating capacity data for different models and water flow rates.

Cabinet and Air Supply Dimensions

Details physical dimensions and air opening sizes for various AHU models.

Introduction

Standard Features and Benefits

Highlights key features and advantages of the IBC air handling appliance.

Product Conformity

States compliance with relevant industry standards and codes for the appliance.

Installation

Locating the Appliance

Guidelines for selecting an appropriate installation location for optimal performance and noise reduction.

Positioning and Mounting

Instructions on orienting and securing the air handling unit in various configurations.

Duct Work

Recommendations for sizing, sealing, and installing ducting systems for proper airflow.

Connecting to Heat Sources

Details on connecting the AHU to boilers and tankless water heaters, including sizing.

Electrical Connections

Guidance on wiring thermostats, pumps, and line voltage for proper appliance operation.

Worked Examples

Illustrative scenarios for wiring different heating and cooling configurations with the AHU.

Operation

Sequence of Operation

Describes how the AHU functions under different modes like heating, cooling, and heat pump.

Status Indicators and App Control

Explains LED indicators and using the IBCconnect app for monitoring and configuration.

Programming the Air Handler

Detailed steps for setting modes, parameters, and fan speeds via the IBCconnect app.

Service and Maintenance

Maintenance Checklists

Guidelines for owners and contractors on routine checks and filter replacement.

Component Replacement Procedures

Step-by-step instructions for replacing key components like fan assembly, coil, and control board.

Temperature Sensor Information

Details on testing and understanding temperature sensor resistance values for diagnostics.

Troubleshooting

Using the IBCconnect App for Troubleshooting

How to use the app to identify and resolve warnings, errors, and faults.

Common Fault Codes and Fixes

Lists potential error messages and their corresponding solutions for quick issue resolution.

Measuring Voltage on AHU Boards

Procedure for checking voltage levels on the appliance's control boards.

Pump Not Energized

Troubleshooting steps for when the appliance's pump fails to activate.

Unstable WiFi Connection

Steps to resolve intermittent wireless connections for the IBCconnect app.

WiFi Password and Network Detection

Information on the WiFi password and troubleshooting network detection for the IBCconnect app.

Using Built-in Diagnostics

Procedure for exporting diagnostic data to a USB stick for analysis.

IBC AHU 800 User Manual

Table of Contents