Generation Geo

EXPECTED SAVINGS

• Savings vary by region and energy costs• Savings happen large or small homes• Natural gas prices today are artificially low

– Consumers must be educated on the volatility

– Comparing 60 cents gas vs 9 cents electric is minimal

• Propane is down but an easier target market• Show your customer the savings over the next 5,

10 & 15 yrs• The tax credit plays a big part when gas prices

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THE COMFORT OF GEOTHERMAL SYSTEMS

• Geothermal systems provide even temperatures throughout the home (when properly installed)

• Most systems are dual stage which provides more run time

• Most gas furnaces are on/off/on/off.• Geothermal systems do not dry out the air in the

heating mode. • In cooling, geothermal systems provide better

dehumidification (the coil temperature is lower and longer run times).

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Design and Sizing OverviewDesign and Sizing Overview

“The best geothermal heat pump on the market can appear to be a poor choice to the homeowner if its design and/or installation are not correct for the application.”

•Key to Efficient, Reliable System–Consider the best unit for each project

•Packaged•Split•Water-Water•Combination•Two-stage or Single Stage

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HOW TO CHOOSE A HEAT PUMP

• Must be-– AHRI rated/certified– ETL listed– Energy Star rated

• Should have-– High EER’s, high cooling capacity– High COP’s, high heating capacity

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HOW TO CHOOSE A HEAT PUMP

• There are several good brands to choose from.• The supplier should also be an important

consideration when choosing a heat pump.• When you’ve decided on the brand/supplier

what else is there………………….

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Geothermal Heat Pumps Configurations

• Water to Water– Chill or Heat Water most diversified

• Water to Air– Most common, usually central plant one zone

• Split systems– Similar to an Air to Air Heat Pump with a Line set

• Combo Systems– Does water to water, and water to air but only one at

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PROPER INSTALLATION PRACTICES

• Proper Model Nomenclature to place an order– A misplaced letter or number could be the wrong unit

• Installation Considerations– What would be a good location for the unit

• Dimensional, Physical and Electrical Data– Size and power requirements for the installation

• Piping, Ducting, and Antifreeze– All three affect the performance of the installation

• Desuperheater Suggested Procedures

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Cautions and Warnings– The most important item on the job is you.

• The warnings and cautions are posted to protect you.

• Ignoring or disregarding these warnings could lead to serious injury or possibly death

– Using equipment during the construction phase will void warranty

I(installation) O(operation) & M(maintenance) Manual

Pre-Installation

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• Be sure what you order is what you receive!• All equipment must be stored in a dry location • All equipment must be installed indoors.• Be sure to remove all packaging materials

before start up.• Check all electrical connections for tightness• Check all refrigerant lines for kinks or damage• The equipment with the longest service life are

those installed and started up properly.

Unit Access & PlacementUnit Access & Placement

Air Pad

2 foot distance suggested around entire unit for service

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All supply and return plenums should have flex canvas collars

All metal duct in an unconditioned location should be insulated Units are considered low velocity systems

400 CFM per ton of nominal cooling capacity

Main Duct System PracticesMain Duct System Practices

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Ductwork Considerations

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Branch duct or takeoff should be at least 24” from any reducer

Return

Supply

Reducer

Takeoff should be at least 24” from an end cap

Flex connectorFlex connector

Insulation can be added to the supply plenum and return drop to help reduce noise

An elbow with 500 CFM or more or airflow should have turning vanes

Loop Install & Air PurgingLoop Install & Air Purging

• The most common issue with a newly installed system.– Proper loop field design is critical

• Loops must be with in 5% length of each other• Reverse Return• Reducing Header• Large enough Flush & Purge Cart• Patience (allow enough time for air purge)

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Equal Loop Length by Reverse Equal Loop Length by Reverse ReturnReturn

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This loop depicts the Reverse Return or First Out – Last In

Hydrometer for Glycol Over 1Hydrometer for Glycol Over 1

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Checking Antifreeze LevelsChecking Antifreeze Levels

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Packaged Water-to-Air Heat Pump

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