TAB Procedural Guide

TAB Procedural Guide

SMACNA

Description

The TAB Procedural Guide is intended for trained TAB technicians to assure that the appropriate procedures are employed in an effective manner. This new publication includes general as well as specific guidance for both air-and water-side HVAC system adjusting and balancing. Variable air volume, multi-zone, dual duct and exhaust air systems are examples of the systems specifically covered and time-saving forms are included for precise record keeping during the conduct of a TAB project.

The guide assists TAB technicians with pre-planning and establishing teams so that energy use is minimized whether the work is done in new or existing buildings.

Details

Topic
Technical Manuals, HVAC Duct Construction Standards, Technical Standards, Inspection Guides
Media Type
Book
Publication Year
2003
Page Count
118
Edition
First

Table of Contents

FOREWORD
iii
NOTICE TO USERS OF THIS PUBLICATION
v
TABLE OF CONTENTS
vii
CHAPTER 1 INTRODUCTION
1.1
1.1 SCOPE
1.1
1.2 PURPOSE
1.1
1.3 HOW TO USE THIS GUIDE
1.1
1.4 THE APPLICATION OF TAB
1.1
1.5 THE TAB TECHNICIAN/TEAM
1.2
1.6 ENERGY COSTS AND COMFORT
1.2
CHAPTER 2 PRELIMINARY TAB PROCEDURES
2.1
2.1 INITIAL PLANNING
2.1
2.2 CONTRACT DOCUMENTS
2.1
2.3 SYSTEM REVIEW AND ANALYSIS
2.2
FIGURE 2-1 SCHEMATIC DUCT SYSTEM LAYOUT
2.3
2.4 THE AGENDA
2.4
FIGURE 2-2 INSTRUMENTS SELECTED FOR A SPECIFIC JOB
2.5
2.5 PLANNING FIELD TAB PROCEDURES
2.5
2.6 PRELIMINARY FIELD PROCEDURES
2.6
CHAPTER 3 GENERAL AIR SYSTEM TAB PROCEDURES
3.1
3.1 BASIC FAN TESTING PROCEDURES
3.1
3.2 SYSTEM START-UP
3.1
3.3 FAN TESTING
3.1
3.4 DEFICIENCY REVIEW
3.2
3.5 RETURN AND OUTSIDE AIR SETTINGS
3.2
3.6 ANALYSIS OF MEASUREMENTS
3.3
3.7 RECORDING DATA
3.3
3.8 PROPORTIONAL BALANCING (RATIO) METHOD
3.3
3.9 PERCENTAGE OF DESIGN AIRFLOW
3.3
Table 3-1 Sample of Airflow Rates
3.4
FIGURE 3-1 SAMPLE SUPPLY AIR DUCT (PART)
3.4
3.10 SYSTEM AIRFLOW
3.5
3.11 BASIC OUTLET BALANCING PROCEDURES
3.5
3.12 STEPWISE METHOD
3.5
FIGURE 3-2 TYPICAL AIR DIFFUSER CFM MEASUREMENT
3.6
3.13 FAN ADJUSTMENT
3.6
3.14 WET COIL CONDITIONS
3.6
3.15 AIRFLOW TOTALS
3.6
3.16 EXHAUST FANS
3.6
3.17 FAN DRIVE ADJUSTMENT
3.6
3.18 DAMPER ADJUSTMENTS
3.7
3.19 DUCT TRAVERSES
3.7
FIGURE 3-3 MEASURING EXHAUST AIR VELOCITY ON LAB EXHAUST HOOD WITH SASH HEIGHT
3.7
3.20 SYSTEM DEFICIENCIES
3.7
3.21 FUME HOOD EXHAUST BALANCING PROCEDURES
3.7
FIGURE 3-4 EXAMPLE OF EXHAUST HOOD AIR BALANCE LABEL
3.8
3.22 DUST COLLECTION AND EXHAUST BALANCING PROCEDURES
3.8
FIGURE 3-5 SAMPLE DUST COLLECTION EXHAUST SYSTEM
3.9
3.23 AIRFLOW MEASUREMENTS ON DISCHARGE STACKS
3.11
3.24 INDUSTRIAL VENTILATION
3.12
3.25 SELECTION OF INSTRUMENTS
3.12
CHAPTER 4 TAB PROCEDURES FOR SPECIFIC AIR SYSTEMS
4.1
4.1 INTRODUCTION
4.1
4.2 VARIABLE AIR VOLUME (VAV) SYSTEMS
4.1
FIGURE 4-1 TYPICAL VARIABLE AIR VOLUME (VAV) SYSTEM
4.1
FIGURE 4-2 OPEN LOOP FAN VOLUME CONTROL
4.2
FIGURE 4-3 CLOSED LOOP FAN VOLUME CONTROL
4.3
FIGURE 4-4 FAN AND SYSTEM CURVES, CONSTANT-SPEED FAN
4.4
FIGURE 4-5 FAN AND SYSTEM CURVES, VARIABLE-SPEED FAN
4.4
FIGURE 4-6 SERIES FAN POWERED VAV UNIT
4.9
FIGURE 4-7 PARALLEL FAN POWERED VAV UNIT
4.9
FIGURE 4-8 PAPER STRIP AT VAV BOX RETURN BEFORE BALANCING
4.10
FIGURE 4-9 PAPER STRIP AT VAV BOX AFTER BALANCING
4.10
FIGURE 4-10 CONSTANT FAN VAV BOX
4.12
FIGURE 4-11 INTERMITTENT FAN VAV BOX (PARALLEL) CYCLE
4.13
4.3 MULTI-ZONE SYSTEMS
4.13
4.4 INDUCTION UNIT SYSTEMS
4.14
FIGURE 4-12 MULTI-ZONE SYSTEM
4.14
4.5 DUAL DUCT SYSTEMS
4.14
FIGURE 4-13 DUAL DUCT SYSTEM
4.15
4.6 SPECIAL EXHAUST AIR SYSTEMS
4.16
FIGURE 4-14 INDUCTION UNIT SYSTEM
4.16
4.7 PROCESS EXHAUST AIR SYSTEMS
4.17
CHAPTER 5 HYDRONIC SYSTEM TAB PROCEDURES
5.1
5.1 HYDRONIC SYSTEM MEASUREMENT METHODS
5.1
FIGURE 5-1 HYDRONIC FLOW MEASUREMENT
5.1
FIGURE 5-2 EXTERNAL ULTRASONIC FLOW SENSOR ON PIPE WITH INSULATION REMOVED
5.2
FIGURE 5-3 ULTRASONIC FLOW METER
5.2
5.2 BASIC HYDRONIC SYSTEM PROCEDURES
5.3
5.3 PIPING SYSTEM BALANCING
5.4
5.4 BALANCING SPECIFIC SYSTEMS
5.5
5.5 VARIABLE VOLUME FLOW
5.9
FIGURE 5-4 EFFECTS OF FLOW VARI-ATION ON HEAT TRANSFER
5.9
FIGURE 5-5 PERCENT VARIATION TO MAINTAIN 90% TERMINAL HEAT TRANSFER
5.9
Table 5-1 Load-Flow Variations
5.10
FIGURE 5-6 CHILLED WATER TERMINAL FLOW VERSUS HEAT TRANSFER
5.10
FIGURE 5-7 PUMP WITH VARIABLE SPEED DRIVE
5.11
5.6 PRIMARY-SECONDAR Y SYSTEMS
5.11
5.7 SUMMER-WINTER SYSTEMS
5.11
FIGURE 5-8 EXAMPLE OF PRIMARY AND SECONDARY PUMPING CIRCUITS
5.12
FIGURE 5-9 SUMMER-WINTER SYSTEMS
5.13
CHAPTER 6 TAB REPORT FORMS
6.1
6.1 PREPARING TAB REPORT FORMS
6.1
6.2 DESCRIPTION OF USE
6.1
INDEX
I.1