HVAC Troubleshooting Manual

HVAC Troubleshooting Manual
اسم المؤلف
J Fletcher
التاريخ
19 فبراير 2021
المشاهدات
التقييم
(لا توجد تقييمات)
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HVAC Troubleshooting Manual
Application Guide Ag 25/99
J Fletcher
Contents
GLOSSARY 11
1. INTRODUCTION 1
2. HEATING SYSTEMS 2
2.1 BOILERS 2
2.2 GAS BURNERS
2.3 OIL BURNERS
2.4 HOT WATER DISTRIBUTION
2.5 STEAM DISTRIBUTION
2.6 CALORIFIERS
2.7 PRESSURISATION UNITS
3. COOLING SYSTEMS 20
3.1 CHILLED WATER SYSTEMS – GENERAL 20
3.2 COMPRESSION CHILLERS (CHILLED WATER AND DX COIL)
3.3 ABSORPTION CHILLERS
4. AIR HANDLING SYSTEMS 40
4.1 AHUs- GENERAL 40
4.2 AHU – FANS
4.3 AHU – FILTERS
4.4 AHU – DAMPERS
4.5 AHU – HEATING AND COOLING COILS
4.6 AHU – THERMAL WHEELS
4.7 AHU – AIR TO AIR PLATE RECUPERATOR .
4.8 AHU- RUN-AROUND COILS
4.10 AHU – ELECTRODE BOILER HUMIDIFIER
4.11 VAV SYSTEMS
5. TERMINAL UNITS 62
5.1 FAN COILS 62
5.2 SPLIT SYSTEMS
5.3 HEAT PUMPS
5.4 CLOSE CONTROL AIR CONDITIONING UNITS
5.5 PERIMETER HEATING
6. PLANT COMMON TO DIFFERENT SYSTEMS 84
6.1 BUILDING CONTROLS
6.2 CENTRIFUGAL PUMPS
6.4 MOTORS
6.5 MOTOR SPEED CONTROL- PULSE-WIDTH MODULATED (PWM) ADJUSTABLE
FREQUENCY DRIVE (AFD)
6.6 PIPEWORK
6.7 DUCTWORK SYSTEMS
7. REFERENCES
104GLOSSARY
GLOSSARY
AFD Adjustable frequency drive
AHU Air handling unit
BMS Building management system
CAV Constant air volume
DCV Demand controlled ventilation
DRT Dry resultant temperature
HT High tension
HVAC Heating, ventilation and air conditioning
IEQ Indoor environmental quality
LTHW Low temperature hot water
M&T Monitoring & Targeting
NPSH Net positive suction head
PWM Pulse width modulated
RH Relative humidity
TRV Thermostatic radiator valve
VAV Variable air volume
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