Air Conditioning and Refrigeration Basics Don Gulliver February
9, 2013 Slide 2 Introducing Yacht Systems Services, Inc. Systems
Approach Marine electrical and electronics Corrosion control
Sanitation systems Air conditioning and refrigeration
Industry-certified and factory trained staff All technicians are
ABYC certified 14 years in business Slide 3 Introducing Don
Gulliver 30 years of experience in military, commercial and
recreational marine systems (design, maintenance and repair) ABYC
certified Master Technician Marine electrical Marine air
conditioning and refrigeration Marine corrosion Slide 4 What is
ABYC? American Boat and Yacht Council Writes the industry standards
for construction and repair of recreational vessels. Trains and
certifies marine service professionals Visit www.abycinc.org for
certified technicianswww.abycinc.org Slide 5 What we will cover AC
& Refrigeration Basics Components Theory Application
installation/operation/maintenance Troubleshooting Slide 6
Refrigeration Components Compressor Condenser Metering device
(capillary tube) Evaporator Reefer/freezer box Slide 7
Refrigeration Theory (only as much as a boat owner needs to know)
What is refrigeration? Removal of heat The refrigeration cycle
Slide 8 Refrigeration Installation Power considerations Amp-hour
requirements Battery sizing Wiring One step up on gauge size
Circuit protection device Controls Digital or analog Slide 9
Refrigeration Installation Condenser Air to air Water to air Keel
cooler Ducting Remove the heat! Slide 10 Refrigeration Installation
Equipment locations Compressor/condenser Evaporator Reefer/freezer
box Insulation Openings Air circulation Linesets & Charging
Slide 11 Refrigeration Operation Temperature settings Refrigeration
Freezer Slide 12 Refrigeration Operation Monitoring run-time
Monitoring amp-hour usage Improving performance Box load Seals
Circulation Ice assist Slide 13 Refrigeration Troubleshooting Poor
cooling performance Cant maintain temperature Cools box
intermittently Compressor not running Effects of Over/Under
Charging Uneven cooling in box Slide 14 Refrigeration FAQs Does
frost inhibit cooling? Cooling Load Why does the box frost up? Low
pressure in the box What to do if unit is not cooling normally?
Turn it off! Is my system working at peak performance? Instrumented
tests Slide 15 Air Conditioning What is air conditioning? Modifying
sensible temperature Controlling humidity Removing pollutants Slide
16 Air Conditioning Components The refrigerant loop Compressor,
condenser, capillary tube, evaporator The seawater loop Seacock,
strainer, heat exchanger, discharge Air flow Blower, ducting,
vents, filter Slide 17 Air Conditioning Components Electrical Power
120/240 Amperage Start Up demand Controls Analog Digital Slide 18
Air Conditioning Theory Again, abbreviated explanation The
refrigeration cycle Cooling How it works Removing humidity (latent
heat) Removing heat (sensible) Heating How it works Electric strip
heat Use of reverse cycle heating Slide 19 Slide 20 Air
Conditioning Installation Sizing system Sailboat cool Sportfish
cool Remote (split) or self contained system? Noise Space
requirements Slide 21 Air Conditioning Installation Power
Amperage/wattage 30A or 50A? How does this affect the rest of the
boat? A/C with water heaters, microwaves, etc Linesets &
Charging Self Contained Remote (split) Systems Slide 22 Air
Conditioning Installation Seawater Materials and types of
components Seacock, strainer, heat exchanger, discharge Air cooled
or water cooled pump No brass or cheap plastics Location of
components Slide 23 Air Conditioning Installation Ducting Duct type
Size Routing Bends Excesses Restrictions Condensate Box or bilge?
Slide 24 Air Conditioning Operation Monitor differential
temperature Run time Set-point selection Slide 25 Air Conditioning
Maintenance Keep it clean! Strainer Filter Condensate pan Condenser
coil Winterize Seawater system Condensate drain Slide 26 Air
Conditioning Troubleshooting Circuit breaker trips Unit is freezing
up Effects of Over/Under Charge High pressure fault Low pressure
fault Unit not cooling Seawater pump not running No water flow
Slide 27 Questions? Don Gulliver (757) 422-9689 [email protected]
