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Pace PAI User Manual

Pace PAI
108 pages
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PAI/PAO
Indoor and Outdoor
Air Handling Units
Installation and Assembly Manual
Form PA102.20-N1 (718) │ Supersedes: PA102.20-N1 (1017)
LD22601

Table of Contents

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Pace PAI Specifications

General IconGeneral
TypeAir Handler
Heating TypeElectric
ConstructionGalvanized Steel
InsulationFiberglass
Motor TypeECM
Voltage Options208/230V

Summary

IMPORTANT! READ BEFORE PROCEEDING!

GENERAL SAFETY GUIDELINES

Outlines general safety practices for operating and servicing the AHU.

SAFETY SYMBOLS

Explains the meaning of various hazard and information symbols used in the manual.

CHANGEABILITY OF THIS DOCUMENT

ASSOCIATED LITERATURE

MODEL NOMENCLATURE

SECTION 1 - GENERAL INFORMATION AND SAFETY

Introduction

Provides a general description of the AHU and its manufacturing standards.

Warranty

Details PACE's warranty terms, coverage, and conditions for AHUs.

Responsibility for Safety

Emphasizes the primary responsibility of individuals working with the equipment for safety.

SECTION 2 - PRODUCT DESCRIPTION

Typical Operation

Describes the four main operational systems of the AHU.

Ventilation System

Explains the purpose and function of the AHU's ventilation system.

Economizer System (Typical)

Details the typical components and function of the AHU's economizer system.

Heating and Cooling System

Lists the various types of heating and cooling methods applicable to the AHU.

Hand Orientation

Defines how to determine the proper left or right hand orientation of the AHU.

AHU Identification (ID)

Identifies the types of ID labels found on AHUs for identification purposes.

AHU ID Label

Lists the specific information contained on the AHU's main identification label.

Skid ID Label

Describes the skid ID label and its purpose in indicating assembly order for multi-piece AHUs.

Segment ID Box

Explains the segment ID box used to identify skids and segments in multi-piece AHUs.

Shipped Loose Parts

Explains how loose parts are labeled and identified for installation.

DIRECTION OF AIRFLOW

States the standard direction for reading airflow in the manual.

SECTION 3 - HANDLING, STORAGE, AND INSTALLATION

DELIVERY AND STORAGE

Provides guidance on proper delivery inspection and storage of AHUs.

Short Term

Outlines recommendations for short-term storage of indoor and outdoor AHUs.

Long Term

Details requirements and maintenance for long-term storage of AHUs.

INSPECTION, DAMAGE, AND SHORTAGE

Instructs on how to inspect shipments for damage and shortages upon arrival.

Receiver’s Responsibility

Defines the receiver's responsibilities for freight claims and damage reporting.

Preventive Maintenance Prior to Long Term Storage

Lists preventive maintenance tasks before storing the AHU long-term.

Rigging

Provides essential guidelines and warnings for rigging AHU sections and components.

Lifting Weights

Advises on how to determine AHU weights for rigging and crane selection.

Moving the AHU

Gives considerations for moving the AHU to its installation site.

Proper Lifting with Shackles

Illustrates proper techniques for lifting AHU sections using shackles and chains.

Come-A-Longs (Power Pulls)

Explains the use of come-a-longs for pulling AHU sections together.

Using Fork Lift in Special Circumstances

Details the correct procedure for using a forklift to move AHUs.

Preparing the Site

Provides essential safety warnings and site preparation guidelines before installation.

Clearance for Outdoor AHUs

Advises on proper placement and clearance for outdoor AHUs to ensure access and ventilation.

Assembling the PACE Provided Curb

Provides step-by-step instructions for assembling the AHU curb.

Clearance and Mounting for Indoor AHUs

Specifies clearance needs and mounting requirements for indoor AHUs.

Installing Ceiling Suspended AHUs

Offers recommendations for structurally supporting ceiling-suspended AHUs.

Installing Outdoor AHU

Provides general instructions for installing an outdoor AHU.

Single Piece Outdoor AHU

Gives sequential steps for installing a single-piece outdoor AHU.

Multi-Piece Outdoor AHU

Details the process for placing and assembling multi-piece outdoor AHUs on a curb.

Setting Up the Sections

Provides instructions for positioning and preparing AHU sections before joining.

Pulling the AHU Sections Together

Guides on using come-a-longs to pull and join AHU sections securely.

Installing Hood with Moisture Eliminators

Details the installation of hoods and optional moisture eliminators.

Installing Indoor AHU

Provides step-by-step instructions for installing an indoor AHU.

Installing an AHU with Expanded Cabinet

Details the installation process for AHUs with expanded cabinets and end channel shipping splits.

Setting Up and Pulling AHU Sections Together

Instructions for setting up and joining AHU sections, including electrical connections.

Installing a Tiered AHU

Guides on assembling and securing stacked AHU tiers.

Assembling the End Channel Shipping Split

Details how to assemble the end channel shipping split, particularly with energy recovery wheels.

Installing Damper Actuator

Provides instructions for installing damper actuators onto damper shafts.

Damper Blade Orientation

Explains how to orient damper blades for proper operation based on type.

Installing Multi-Zone (MZ) Dampers

Guides on installing multi-zone dampers into the AHU.

Installing Field Supplied MZ Damper Actuators

Provides information for selecting and installing field-supplied damper actuators.

Pipe Chase, Hoods and Seam Caps

Lists parts and refers to figures for installing pipe chases, hoods, and seam caps.

Air Filters

Introduces air filters and their importance for protecting AHU coils.

Maintaining and Replacing Filters

Describes how to check filter cleanliness and when to replace them.

Installing a 2 in. Pleated Filter

Provides step-by-step instructions for installing 2-inch pleated filters.

Installing a 4 in. Pleated Filter

Provides step-by-step instructions for installing 4-inch pleated filters.

Installing a Single Headered (SH) Filter

Details the process for installing a 2-inch Single Headered (SH) filter.

Installing a 2 in. Pre-Filter Combined with a SH Final Filter

Guides on installing a 2-inch pre-filter with a SH final filter.

Installing a Multi-Cell SBM Double Headered (DH) Filter

Instructions for installing a Multi-Cell SBM Double Headered (DH) filter.

Installing a 2 in. and 4 in. Pre-Filter Combined with a DH Final Filter

Guides on installing combined pre-filters with a DH final filter.

Installing Pre-Filter Latches

Provides specific instructions for installing pre-filter latches.

HEPA FILTERS

Introduces HEPA filters and their application requirements.

Koch HEPA Filter Frame

Describes the Koch HEPA filter frame and its installation.

Welded Bevel Seal Frame

Explains the features of the welded bevel seal frame for HEPA filters.

Visual Control Filter Clamps

Details the use and installation of visual control filter clamps for HEPA filters.

HEPA Filter Applications

Explains the applications and design of visual control clamps for HEPA filters.

Filling Inertia Fan Base

Instructions for filling inertia fan bases with concrete.

Thrust Restraint Replacement and Adjustment

Covers the replacement and adjustment of thrust restraints on fans.

Thrust Restraint Replacement

Step-by-step guide for replacing thrust restraints on supply fans.

Thrust Restraint Adjustment

Details how to adjust thrust restraints after installation for proper function.

Aligning Sheaves

Explains the importance and methods for aligning sheaves for optimal belt performance.

Belt Replacement Tensioning and Sheave Alignment for Top Mount

Instructions for replacing belts and aligning sheaves on top-mounted systems.

Steam Humidifier

Provides information on factory-mounted steam humidifiers and contractor responsibilities.

UVC Emitter Lamps

Details contractor responsibilities for installing UV lamps and connecting power.

UV Control Panel Wiring (8 amps)

Wiring diagram for the UV control panel with an 8 amp configuration.

UV Control Panel Wiring (Greater Than 8 Amps)

Wiring diagram for the UV control panel with a configuration greater than 8 amps.

Air Measuring Device Connections

Explains how to connect air measuring devices like COMETER and PIEZORING.

Air Measuring at the Fan Inlets

Details connections for air measuring probes at the fan inlet.

Installing the Pipe Chase

Provides instructions for installing the pipe chase before connecting piping.

Tools and Materials

Lists tools and materials required for pipe chase installation.

Preparing Pipe Chase for Installation

Details steps to prepare the installation site for the pipe chase.

Apply Gaskets

Provides instructions for applying various gaskets during pipe chase installation.

Attach Pipe Chase

Guides on how to attach the pipe chase to the AHU and curb.

Install Cover Angles

Instructions for installing cover angles on the pipe chase.

Install Base Rail Covers (If Applicable)

Details how to install base rail covers for the pipe chase.

Installing External Vent Piping for Outdoor AHUs

Outlines installation of external vent piping for outdoor AHUs.

Condensate Drain Arrangement

Provides instructions for proper condensate drain arrangement and trap installation.

General Electrical Information

Covers general electrical codes, wiring practices, and safety precautions for AHUs.

Power Connections

Details how to make power connections, including single point power options.

Single Point Power

Explains the single point power connection option and included devices.

Motors for Supply, Return, and Exhaust Fans

Guides on making motor connections for supply, return, and exhaust fans.

Wiring the Energy Recovery Wheel

Instructions for wiring the energy recovery wheel if single point power is not used.

Wiring the Gas Heat Device

Details wiring responsibilities for the gas heat device if not using single point power.

Wiring the Electric Heat Device

Guides on wiring the electric heat device if single point power was not purchased.

Power Options

Lists the available power options for electric heat devices.

Disconnect Switch Options

Describes the available fused and non-fused disconnect switch options.

Installing Electrical Heat Option

Covers safety precautions, application info, and mechanical installation for electric heat.

Application Information

Provides information on minimum air velocity and temperature limits for electric heaters.

Mechanical Installation

Details the mechanical installation of airflow switches within the electric heat control panel.

Control Options

Explains the different control options available for electric heat staging and modulation.

Pressure Probe Direction

Illustrates the correct orientation for pressure probes used with airflow switches.

Air Flow Switch Connections

Shows how to connect air flow switches for proper operation.

Electrical Installation

Provides detailed instructions for electrical installation of heaters, including wiring and sizing.

Electric Humidifier

Guides on wiring the electric humidifier if not using the single point power option.

Humidifier

Mentions control wiring diagrams and factory package drawings for humidifiers.

Field Penetrations for Piping and Electrical Connections

Details how to seal penetrations through AHU panels for piping and electrical conduits.

Tools Required

Lists tools needed for making field penetrations.

Material Required

Lists materials needed for sealing penetrations.

Procedure

Provides a step-by-step procedure for creating and sealing panel penetrations.

Lights for AHUs

Lists parts shipped loose for AHU lighting on tiered units.

Piping Connections

Provides guidance on installing pipe chases and bringing piping into the AHU.

Coil Piping

Gives guidelines and warnings for piping coils, emphasizing isolation and support.

Staggered Coils

Discusses external connections for staggered coils in expanded cabinets.

Hot and Chilled Water Coils

Details connection procedures for hot and chilled water coils.

Freeze Protection

Outlines measures to prevent freeze damage to coils during cold weather.

Steam Control

Discusses best practices for steam supply control and valve selection.

Steam Traps

Provides information on selecting and sizing steam traps for various applications.

DRAINS AND TRAPS

Warns about freezing risks in traps and suggests protective measures.

Condensate Drain Piping

Explains how to prevent condensate buildup in drain pans and pipes.

Elevating AHU for Gravity Floor Drain Connections

Discusses methods to elevate AHUs for proper gravity drain connections.

DUCT CONNECTIONS

Covers guidelines for ensuring positive seals and efficient airflow with duct connections.

Duct Connection Guidelines

Outlines best practices for connecting ducts to the AHU for optimal performance.

Raw or Straight Edge Duct or Sleeves

Details how to connect raw or straight edge ducts to the AHU.

Sound and Vibration Transmission

Discusses factors affecting noise and vibration generated by AHUs.

Installing Top Discharge Outdoor AHU Duct

Provides instructions for installing top discharge ductwork for outdoor AHUs.

Installing Front and Rear Discharge Outdoor AHU Duct

Guides on installing front and rear discharge ductwork for outdoor AHUs.

VERTICAL TUBE INTEGRAL FACE AND BYPASS (VIFB) AND INTEGRAL FACE AND BYPASS (IFB)

Details warranty, installation, and operation for VIFB and IFB coils.

Piping Suggestions

Offers recommendations for steam and hot water piping installations.

Flexible Connectors (VIFB Only)

Emphasizes the need for flexible connectors to accommodate header expansion.

Freezing Conditions

Discusses measures to prevent freeze-up, especially with outdoor AHUs and mixed air.

REFRIGERATION

Introduces refrigeration systems and DX direct expansion coils.

DX Direct Expansion Coils

Explains the characteristics and handling of DX direct expansion coils.

DX Coil Types

Describes the three main types of DX coil arrangements: interlaced, row split, and face split.

THERMOSTATIC EXPANSION VALVES (TXV)

Details the function, sizing, and installation of thermostatic expansion valves.

HOT GAS BYPASS (HGBP)

Explains the use of hot gas bypass for capacity control at low loads.

DX Coil Circuiting and Staging

Discusses coil circuiting and staging strategies for DX coils based on compressor count.

Advantages of Multiple Control Stages

Explains how multiple control stages improve temperature control and equipment life.

Maintaining Adequate Airflow

Emphasizes the importance of maintaining adequate airflow for condenser and compressor protection.

VAV SYSTEMS

Introduces Variable Air Volume (VAV) systems and their components.

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