HVAC Packaged Systems: Efficient Choices for RTUs, Split Systems, Heat Pumps, and VRF Systems
Tuesday, February 5, 2019 - 8:00am to 5:00pm
Training Overview:

This course will use proven methods and an easy to use (and free) software tool to help quantify the economic value of various system options. OPTIONAL: PLEASE BRING YOUR LAPTOP TO CLASS TO INSTALL AND RUN THESE SOFTWARE TOOLS.

Event Benefits:

As a result of this training, participants will be able to:
1. Install and use free software to analyze the economics of packaged system replacements and improvements
2. Understand AHRI efficiency ratings for packaged RTUs and Heat Pumps
3. Know the requirements of the International Energy Conservation Code (IECC) 2015, which is the current code in Massachusetts
4. Select the appropriate controls and accessories to maximize performance and efficiency
5. Be able to describe technologies such as economizers, heat pumps, demand controlled ventilation, staged air volume, and variable refrigerant flow

Who Should Attend:

NGRID and EVERSOURCE Engineers and their End -Users
All those interested in learning how to save using the latest HVAC technics and software


1. Packaged System Overview
2. Programmable Thermostats
a. Internet thermostat vs. building automation systems (BAS)
b. IECC 2015 Code Requirements
c. Typical Energy Savings and Payback
3. Heat Pump Systems
a. Discussion of Heating System Options
b. How does a heat pump work?
c. Operating cost comparisons to electric heat, natural gas, and propane
d. Do heat pumps work in cold climates?
e. Heat pump types: air source, water source, and geothermal
f. Auxiliary Heating Choices & Hybrid Systems
4. Economizers
a. Technology Overview
b. Retro-fit Option?
c. Dry bulb vs. Enthalpy
d. IECC 2015 Code Requirements
e. Typical Energy Savings and Payback
5. Demand Controlled Ventilation (DCV)
a. CO2 Sensors and Technology Overview
b. The 2nd easiest retro-fit option for most RTUs
c. Is it required by energy code? Is it allowed by mechanical code?
d. Target Applications
e. Typical Energy Savings and Payback
6. Staged Air Volume (SAV)
a. How is SAV different than VAV?
b. What good is a VFD on a “constant volume” system?
c. VFD or ECM?
d. How is it controlled?
e. Is it required by energy code?
7. Variable Refrigerant Flow (VRF) Systems
a. Technology Overview
b. 2-pipe Heat Pumps & 3-pipe Heat Reclaim
c. AHRI Efficiency Ratings
d. Hybrid Systems
e. Application Considerations
f. Energy Comparison to other system types
8. Repair vs. Replace Customer Walk-thru Scorecard
a. Tool used to help engage the facility manager in the process
b. Assigns a score to the system used to help determine replacement
9. Operating Cost Calculations & Software
a. Demonstrate free Commercial INVE$T
i. Compares existing unit performance to new units
ii. Compares new units of different efficiency levels
iii. Includes enhancements such as economizer, DCV, ERV, and SAV

Tools & References:

All materials will be available in class.

Mr. Ryan Hoger, LEED® AP BD+C
Workshop Cost:
Registration Details:

Payment by credit card online

Checks will be accepted at the door.
Make checks payable to: University of Massachusetts-Amherst

University of Massachusetts Department of Mach. & Ind. Engineering
160 Governors Dr. Amherst, MA 01003-9265
Attn. Alberto Morales

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