The document provides an overview of HVAC systems used at the Amaazia Water Park and Club. It describes the main components of chilled water systems including chillers, pumps, cooling towers, air handling units, and motors. It then discusses the standard operating procedure for starting and stopping chillers, components of piping systems like valves and strainers, air handling units, cooling towers, and various types of pumps. Diagrams are included showing typical connections for air handling units, risers, and chillers. Safety procedures for water leakage are also covered. Applications of HVAC systems conclude the document.

1. HVAC Equipment &
Maintenance ( Part 2 )

2. Hello!
I am Vaisakh
Subash
I am here to give you technical training about
HVAC
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3. 3
Hvac Systems in
Amaazia
Amaazia Water Park
• Variable Refrigerent Flow ( VRF ) System
• Ventilation System
• Direct Expansion System
Amaazia Club
• Chilled water system
• Direct expansion system
• Ventilation system

4. Chilled Water System
• The main components of the chilled water
system are chillers,pumps,cooling
towers,ahu,motors etc
• The main types are air cooled and water
cooled
• They are categorized depending on how the
heat is rejected out of the system

5. 5
Schematic Diagram

6. Chillers
A chiller is a machine that removes heat from a
liquid via vapor-compression or absorption
refrigeration cycle
A chiller mainly consists of four major
components; a compressor, an evaporator, a
condensor and expansion valve
The water chillers can be mainly classified
• Air Cooled Chillers
• Water Cooled Chillers

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Overview of Chiller

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Components of Chiller
The compressor are usual reciprocating,scroll,centrifugal
or rotary screw types
The evaporator is usually shell & tube heat exchanger
where chilled water is produced and the condensor can
be either air cooled or water cooled

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Standard Operating
Procedure
1. First of all start one primary and condensor
pump and two cooling tower motor from the
main hvac panel
2. After that start one secondary pump from the
secondary panel
3. Visually check all the pumps are working are
on or not
4. Check evaporator water flow and condensor
water flow status if it is not showing check
the motor and valve positions
5. After that press auto on display of the chiller

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1. First of all press the stop from the chiller
display screen
2. Wait for the compressor to unload and after
that wait for evaporator pump off delay
3. After that stop the pumps one by one ie
condenser,evaporator and also cooling
tower motor
How to shutdown the chiller?

11. Components of Piping
System
It is a device that regulates,controls the flow of
fluid by opening,closing or partially obstructing
various passageways
The main types are
• Shutoff Valve
• Balancing Valve
• Strainer
• Control Valve
1.Valves & Assemblies

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1.Shutoff Valves
Gate Valve Ball Valve Butterfly Valve
2.Balancing Valves
Globe Valve Angle Globe Valve Y Globe Valve

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3.Strainer
Y Type Strainer Suction Guide Pot Strainer
4.Control Valve
Two Way Valve Three Way Valve PIBCV

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3.Miscellaneous Items
Pressure Guage Temperature Guage Air Purge Valve
Expansion Tank Air Seperator Rubber Bellows Non Return Valve

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It is the factory fabricated assembly consisting of
fan, cooling coil, filts, dampers, and other
necessory equipements to perform the following
functions of circulating, cleaning, cooling, and
mixing of air.
The main types are fan coil unit, fresh air
handling unit, floor mounted unit and celing
suspended unit.
It can be further classified as single skin and
double skin.
2.Air Handling Unit ( AHU)

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The cooling tower water removes the heat of the
condensor by the principle of evaporative cooling.
It is an equipement used to reduce the
temperature of the water stream by extracting
heat form water and emitting it to the
armosphere.
Water is exposed to outside air to reject the heat
from the water.
The main types are natural draft and mechanical
draft
3.Cooling towers

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It is an enclosed area through which any liquid or
gas can be passed.
The pipe which join the compressor, condensor
and evaporator through which refrigerant passes
is called primary piping.
There is an additional piping which join pumps,
chillers, AHU and FCU in which chilled water is
passed is called secondary piping or chilled
water piping.
The primary and secondary piping are also
called closed piping.
4.Piping

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The condensor piping which joins the pumps, condensor
and cooling tower is called hot water piping or open piping.
SS pipes are used in the manufacturing of the chiller.
Copper and alluminium pipes are used in the manufactuing
of condensor and evaporators.
The pipes can be mainly classified into
1. Seamless
2. Welded
Classification of pipe according to grade
• A Class pipe or Schedule 20 pipe or light duty pipe
• B Class pipe or Schedule 40 pipe or medium duty pipe
• C Class pipe or Schedule 60 pipe or heavy duty pipe

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5.Hvac Control Equipments
Thermostat Actuator Control Panel

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6.Pumps
It is a device which moves fluids by mechanical force and
converts the mechanical energy to hydraulic energy
The pressure energy is increased by creating a region of low
pressure below the atmospheric pressure near the inlet of
the pump and higher pressure at the outlet of the pump
The purpose of the pumps may be
increasing the pressure
energy,imparting the kinetic energy,
lifting and circulating, exhausting or
extracting liquid

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Classification of Pump
1. Positive Displacement
These pumps operate on the principle of definite quantity of
the liquid is discharged or displaced due to the positive or
real displacement of working element like
piston,plunger,gears,vanes,screws etc
a) Reciprocating Pumps
• Piston Pumps
• Plunger Pumps
• Bucket Pumps
b) Rotory Pumps
• Gear Pumps
• Vane/Lobe Pumps
• Screw Pumps

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2. Roto Dynamic Pumps
The pumps operate on the principle of rise in pressure
energy of the liquid by the dynamic action.It is carried out by
revolving wheel which has curved vanes in it which is called
impeller
• Radial Flow Pump ( Cenrifugal Pump)
• Axial Flow Pump
• Mixed Flow Pump

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Ahu Typical Connection

24. 24
Riser Typical Connection

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Chiller Typical Connection

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What to do incase of water leakage?
1. First of all reach the area and assess the situation
2. Take some time think calmly do not panic
3. Try to findout the exact location of the leakage
4. If the leakage is between the coil and butterfly valve
close the butterfly valve
5. Otherwise close the inlet and oulet butterfly valve of the
main header ( floor header )
6. If there is any problem in closing the header valve
directly go the plantroom and drain the line
7. Open the drain valve of the chiller and release water
Safety Procedure

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Applications of Hvac
Systems
• School
• Apartments
• Shopping Mall
• Theatres
• Hospitals
• Auditoriom

28. Thanks!
Any questions?
You can find me at:
◇ vaisakhsubash@gmail.com
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