AAF HermanNelson IM 725 User Manual

AAF
®
-HermanNelson
®
Classroom Unit Ventilators
©2002 AAF
®
-HermanNelson
®
Installation Manual IM 725
Group: Unit Ventilator
Part Number: 106506101
Date: January 2002
Vertical Floor Models AVS, AVV, AVB, and AVR
Horizontal Ceiling Models AHF, AHB, AHV, and AHR
Before beginning installation, please read this publication in its entirety.
Develop a thorough understanding before starting the installation procedure.
This manual is to be used by the installer as a guide. Each installation is unique, only general topics are covered.
The order in which topics are covered may not be those required for the actual installation.
IMPORTANT!

AAF HermanNelson IM 725 Specifications

General

Brand	AAF
Model	HermanNelson IM 725
Category	Ventilation Hood
Language	English

Summary

Installation Manual

AAF-HermanNelson® Classroom Unit Ventilators

Identifies the product and its application.

Model Overview

Lists vertical floor and horizontal ceiling models covered.

Safety Information and Tools Required

Safety Information Guidelines

Essential safety precautions and warnings.

Required Tools for Installation

Installing The Unit Ventilator

Uncrate and Inspect Unit Ventilator

Procedure for uncrating and inspection.

Unit Identification

How to identify the correct unit.

Floor Type Unit Ventilator Data Plate Information

Position the Unit Ventilator

Make Piping Connections

All Systems Piping Guidelines

Water Coil Connections

Water System Procedures

Coil Headers, Locations

Heating Only Coil Headers

Details for heating-only configurations.

Cooling Only Coil Headers

Details for cooling-only configurations.

Heat/Cool Coil Headers, Locations (Continued)

Heat/Cool Unit Configurations

Reheat Coil Headers, Locations (Continued)

Reheat Unit Configurations

Valves and Piping

Face and Bypass Valve Configurations

Details on face and bypass configurations.

2-Way and 3-Way End-of-Cycle Valves

Explains EOC valve types.

Hot Water EOC Valve Piping

2-Way and 3-Way Modulating Valves

Hot Water Modulating Valve Piping

Coil Piping

Typical Hot Water Coil Piping

Typical Steam Coil Piping

Condensate Piping

Direct-Expansion (DX) Piping

Unit Ventilator Split Systems Guidelines

Required DX System Components

Checking System Charge

Determining Subcooling

Steps to determine subcooling.

Determining System Superheat

Superheat Adjustment Procedure

How to adjust superheat.

Make Electrical Connections

Electrical Connection Instructions

Unit Mounted Microtech™ DDC Components

DDC Component Descriptions

Typical Power and Control Field Wiring

Wiring Diagrams and Configurations

Typical Wall Mounted Room Air Sensor

Sensor Installation Procedures

Sensor Mounting Procedures

Prepare Unit Ventilator(s) for Start-up

Installing Unit Ventilator End Panels

Startup and Warranty Procedures

Includes end panel install, startup, and warranty.

Fan and Motor Oiling

Unit Ventilator Initial Startup

Initial startup procedure.

Model AH Ceiling Unit Ventilator Installation

Lifting Ceiling Unit Into Position

Procedure for lifting and positioning.

Ceiling Unit Installation Tools

Ceiling Type Unit Ventilator Data Plate Information

Duct System Considerations

Duct Design For Noise Control

Strategies for noise reduction in duct design.

Anchoring The Ceiling Unit

Suggested Condensate Trapping

Make Piping Connections

Model AV/AH Unit Ventilator Limited Warranty

Warranty Terms and Limitations

Covers warranty period, exclusions, and limitations.