HEATING & AIR-CONDITIONER INSTALL/SER / (HVAC Tech II)

Anonymous

North Carolina (SAA)

Documents

Individual state requirements may vary. Please contact your local apprenticeship office to ensure this version is suitable to your state’s requirements.

Work Process Schedule

Work Process Content

On the Job Training

Anonymous

162

Skills

Service tool introduction and use

tool Safety
electrical hand tools
piping tools
general tools
digital/analog troubleshooting/diagnosing tools cordless/corded tools

PPE – Demonstrate when and how to use

Electrical
pressurized
pinch point
working elevated
construction
general
minimum

Equipment records and required documentation

Timelines
Requirements
MSS Paperwork
customer requirements
parts ordering
truck supply

Types of HVAC Equipment

unitary
splits
gas furnaces
heat pumps
water source heat pumps
makeup air units
data room units
humidifiers
dehumidifiers
chillers
cooling towers
pumps
heat exchangers

Condenser Coil Cleaning

Proper technique to clean condenser coils o Single o Multi o split coils

Belt Tension and Pulley Alignment

System Safety
Aligning belt driven pulley system using straight edge and laser alignment tool
Setting tension on belts.

HVAC PM maintaining light commercial systems

Unit safety
types of HVAC systems
changing filters
changing/checking belts
cleaning condenser coils
inspecting coils
fans
motors
bearings
belts drain lines/pans,
starters/contactors
wiring connections/terminations
measuring performance with pressures and temperatures

Refrigerant circuit

refrigerant safety
refrigerant path and stages within the system
component identification
heat transfer
reading refrigerant pressures and temperatures
charging systems
diagnosing component failures and partial failures

Charging System with Refrigerant

refrigerant Safety
charging refrigeration systems utilizing the SH and SC method
TXV setting
fixed metering
fixed weighted charge.

HP Refrigerant Recovery 100 lbs. and less

refrigerant safety
refrigerant recovery components connecting the small recovery equipment for push pull
vapor and liquid recovery completing refrigerant recovery
securing system after recovery
nitrogen holding charge after recovery.

HP Refrigerant Recovery 100 lbs. and greater.

refrigerant safety
refrigerant recovery components
connecting the large recovery equipment for push pull
vapor and liquid recovery
completing refrigerant recovery securing system after recovery nitrogen holding charge after recovery

System Evacuation/Vacuum

verifying system leak tight
connecting vacuum pump through micron gauge and manifold gauges
standard vacuum vs triple evacuation
securing system after vacuum has been achieved

HVAC PM Maintaining Commercial/Industrial Systems

Unit safety
types of HVAC systems
Changing filters
changing/checking belts
cleaning condenser coils, inspecting coils
fans
motors
bearings
belts,
drain lines/pans
starters/contactors
wiring connections/terminations
measuring performance with pressures and temperatures

Basic HVAC Electrical

electrical Safety
size of wires and connectors
making connections
basic wiring
component identification, diagnosing component failure
component replacement
control circuits
Single phase vs three phase

Diagrams and Schematics

Wiring schematics
component identification
low voltage/high voltage ladder and line diagrams
symbols and notes.

HVAC Controls

Electrical/Refrigerant Safety, component identification within the electrical controls circuit, component identification within the refrigerant circuit,
thermostat wiring,
unit wiring, troubleshooting/diagnosing the low voltage control circuit

Light Commercial Heating Systems

unit Safety
service
PM and troubleshoot/diagnose gas packs/furnaces
heat pumps
water source heat pumps
hot water/steam AHU's.

General Piping

threaded-glued-brazed-pressed piping
sizes of piping
choosing the correct material fittings, fitting technique

Brazing

Oxy-acyt Torch use
MAPP torch use
cleaning, 15%-95/5-Utectic rod usage
copper-copper
copper-\steel/brass.

Motors

inspecting
logging
troubleshooting
diagnosing blower
condenser
exhaust and pump motors and fluting

HVAC 3 phase Electrical

electrical safety
size of wires and connectors, making connections
basic wiring
component identification
diagnosing component failure
component replacement
control circuits

Introduction to Chillers

Operation of air cooled and water cooled chillers

Air Cooled Chiller PM

log operation
inspect wiring
contractors
terminals
clean coils

Introduction to Process Chillers

Operation of air cooled and water cooled chillers
Log operation
inspect wiring
contactors
terminals
clean coils.

Centrifugal Chiller PM

Log operation
inspect wiring
contactors, terminals
brush tubes
change oil and filters

Introduction to small hot water boilers

log operation
inspect wiring
contactors
terminals
piping
gas lines and vent piping

Introduction to sheet metal working

working safely with sharp corners/edges
Cut
bend
attach metal duct and accessories.
VFD
Operator level training

BAS

Verifying system leak tight, connecting vacuum pump through micron gauge and manifold gauges, standard vacuum vs triple evacuation,
securing system after vacuum has been achieved.

Diagnosing Air Flow Problems